Subcontractor Contracts and Agreements
A proper written contract is your single most important protection as an owner-builder. It clarifies expectations, prevents disputes, gives you legal recourse when things go wrong, and protects you financially and legally.
Never start work without a signed contract. Never.
This guide shows you exactly what every subcontractor contract needs to include, the common mistakes to avoid, and how to protect yourself while staying fair to contractors.
Why Contracts Are Critical
A contract is cheap insurance against expensive problems. Here is the trade-off in plain numbers.
| Risk a contract prevents | Typical cost without a contract |
|---|---|
| Mechanic's lien on your property | $15,000 to remove |
| Abandoned work another contractor started | $25,000+ to finish |
| Uninsured worker injury liability | $50,000-500,000 |
| Disputes (scope, payment, timeline, quality) | Months of delays |
| Enforcing a verbal agreement | $5,000-20,000 in legal fees |
What a contract gives you instead:
- Clear expectations from day one
- Legal protection if things go wrong
- Payment leverage to ensure completion
- Defined quality standards
- Lien protection
- Insurance requirements enforced
Time to create: 1-2 hours per contract Cost: $0-500 (depending on attorney review) Value: Priceless
Essential Contract Elements
Every subcontractor contract must include these elements.
1. Parties and Property Information
What to include:
This Agreement is made on [DATE] between:
OWNER-BUILDER:
[Your full legal name]
[Your address]
[Phone and email]
CONTRACTOR:
[Business legal name]
[Business address]
[License number: #XXXXX]
[Phone and email]
For work at:
PROPERTY ADDRESS: [Complete address]
LEGAL DESCRIPTION: [From deed if available]
PERMIT NUMBER: [If applicable]
Why it matters:
- Establishes legal parties
- Confirms contractor is licensed
- Links contract to specific property
- Necessary for legal enforcement
A contractor who won't provide a full legal business name or address is a red flag — walk away.
2. Scope of Work (Most Critical Section)
What to include:
- Detailed description of all work to be performed
- Specific tasks and deliverables
- Materials to be used (brands, grades, specs)
- What's included AND what's excluded
- Reference to plans and specifications
- Quality standards and codes to follow
Example - Good scope:
SCOPE OF WORK: Rough Plumbing Installation
Contractor shall furnish all labor and materials to complete rough plumbing
installation including:
1. WATER SUPPLY
- Install 3/4" main water line from meter to house
- Install 3/4" copper supply lines throughout house per plan
- Install all fixture rough-ins per fixture schedule
- Pressure test all supply lines to 60 PSI for 2 hours
- Materials: Type L copper, lead-free solder, ProPress fittings
2. DRAIN, WASTE, VENT (DWV)
- Install all drain lines per plumbing plan (dated 4/15/2024)
- Install all vent lines per code requirements (IRC P3103)
- Install all fixture drains per fixture schedule
- Test all DWV lines per code
- Materials: Schedule 40 PVC
3. SPECIFIC EXCLUSIONS
- Fixture installation (by owner)
- Water heater installation (separate contract)
- Exterior hose bibs (by owner)
- Excavation for water line (separate contract)
4. CODE COMPLIANCE
- All work shall meet 2021 IRC and local amendments
- Contractor shall schedule and pass rough plumbing inspection
- Any failed inspection corrections at contractor's expense
5. REFERENCED DOCUMENTS
- Plumbing plan dated 4/15/2024 (attached as Exhibit A)
- Fixture schedule (attached as Exhibit B)
- Specifications (attached as Exhibit C)
Example - Bad scope (too vague):
"Install rough plumbing per plans"
Why detailed scope matters:
- Prevents "I thought you meant..." disputes
- Clarifies who provides what
- Sets quality expectations
- Makes contract enforceable
- Provides inspection checklist
Attach plans, specifications, and fixture schedules as exhibits. The scope section should reference them, not retype them.
3. Project Timeline
What to include:
- Start date (specific or "within X days of...")
- Substantial completion date
- Final completion date
- Milestones (if applicable)
- Schedule dependencies
- Weather delay provisions
- Consequences of delays
Example:
TIMELINE:
Start Date: June 1, 2024, or within 5 days of written notice to proceed
Substantial Completion: June 15, 2024 (14 calendar days from start)
Final Completion: June 20, 2024 (including any punch-list items)
Milestones:
- Rough-in complete and ready for inspection: June 12, 2024
- Inspection passed: June 15, 2024
- Punch-list complete: June 20, 2024
Weather Delays: Reasonable extensions granted for weather delays beyond
contractor's control, provided contractor gives written notice within 24 hours.
Owner Delays: Timeline extends for delays caused by owner (late material
delivery, site access issues, etc.) provided contractor gives prompt notice.
Liquidated Damages: If contractor fails to achieve substantial completion
by June 15, 2024, contractor shall pay $200 per day in liquidated damages
to compensate owner for extended construction loan interest, delayed
subsequent trades, and other damages difficult to quantify.
Why timeline matters:
- Keeps project on schedule
- Coordinates with other trades
- Provides accountability
- Allows you to plan
- Gives leverage for on-time completion
Liquidated damages: Pre-agreed amount per day for delays
- Makes enforcement easier (no need to prove actual damages)
- $100-300/day is typical for residential
- Must be a genuine, reasonable pre-estimate of actual damages at the time of signing
This matters legally: if the amount looks like a penalty rather than a real estimate of likely harm, a court can strike the clause as an unenforceable penalty — and some states scrutinize these closely. Tie the figure to real costs (e.g., extra loan interest, delayed trades) and keep it reasonable.
When to use: Long-lead or critical-path work where delays cascade
4. Payment Terms (Critical for Your Protection)
What to include:
- Total contract price
- Payment schedule tied to completion
- Deposit amount (subject to your state's statutory cap — see warning below)
- Progress payment triggers
- Final payment conditions
- Retention (holdback)
- When payment is due
- How payment is made
- Late payment terms (if contractor requests)
Example - Payment schedule:
CONTRACT PRICE: $18,000
PAYMENT SCHEDULE:
Deposit: $2,700 (15%) - Due upon contract signing, before work begins
(illustration only — cap this at your state's legal limit, which may be lower)
Progress Payment 1: $6,300 (35%) - Due within 5 days of rough-in
completion and passed inspection
Progress Payment 2: $6,300 (35%) - Due within 5 days of fixture
installation completion
Final Payment: $2,700 (15%) - Due within 5 days of:
- All work complete per scope
- Final inspection passed (if applicable)
- All punch-list items complete
- Conditional lien release provided
- Warranty documents provided
PAYMENT METHOD: Check or ACH transfer
PAYMENT TIMING: Payments due within 5 business days of reaching milestone
and contractor providing documentation (photos, inspection card, etc.)
RETENTION: If permitted by state law and agreed in this contract, Owner may
retain 10% ($1,800) until the state lien deadline has run (here, 30 days
after final completion) to ensure no defects appear and no liens are filed.
Payment schedule best practices:
The 10-20% deposit figure used in the examples on this page is a general rule of thumb, not a legal ceiling. Several states cap residential down payments far lower, and exceeding the cap can be a violation by the contractor:
- California and Nevada cap the down payment at the lesser of 10% of the contract price or $1,000. In California, taking more is a misdemeanor (Bus. & Prof. Code §7159.5).
- Maryland, Massachusetts, and Pennsylvania cap the deposit at roughly one-third of the contract price.
- More broadly, progress payments generally may not exceed the value of the work actually performed at the time of payment.
So treat the deposit as subject to your state's statutory cap, which may be much lower — check it first. When in doubt, structure the deposit at or below the lowest applicable limit and tie everything else to completed work.
Deposits:
- A common rule of thumb is 10-20%, but never more than your state's statutory cap — which in some states is the lesser of 10% or $1,000 (CA, NV) or one-third (MD, MA, PA)
- Only pay after contract is signed
- For materials, not profit
Progress payments:
- Tied to measurable milestones
- Based on work completed, not time elapsed
- Should roughly match percentage of work done
- Verify work before paying
- Require photos or inspection for remote oversight
Final payment:
- 10-20% held until truly complete
- All work done, inspected, punch-list complete
- Lien releases received
- Provides leverage for completion
Retention:
- A retainage figure of around 10% is a common contract term, but it is a negotiated term, not an automatic owner entitlement — many states regulate the percentage and timing, and single-family residential is often exempt from statutory retainage rules entirely (see Retainage Best Practices below)
- The point of holding funds is partly to protect against liens, but the lien-filing window varies widely by state — anywhere from roughly 30 days to a full year, with many states landing at 90-120 days or about 6 months
- So tie any hold period to your state's actual mechanic's-lien deadline, not a blanket 30-60 days
- Also protects against immediate defects; released if no issues
- Pay 50%+ upfront (major red flag)
- Pay for work not complete
- Pay final payment before lien release
- Pay cash (always keep documentation)
5. Materials and Specifications
What to include:
- Who provides materials (contractor vs. owner)
- Specific brands, grades, or "or equal"
- Quality standards
- Substitution approval process
- Storage and protection
- Warranty on materials
Example:
MATERIALS:
Provided by Contractor:
- All framing lumber: #2 or better SPF, kiln-dried
- Engineered lumber: LP or Boise Cascade I-joists per plan
- Sheathing: 7/16" OSB, Exposure 1 or better
- House wrap: Tyvek HomeWrap or approved equal
- Fasteners: Code-compliant nails and screws
- All adhesives and sealants
Provided by Owner:
- Windows (contractor to install)
- Exterior doors (contractor to install)
Substitutions: Any material substitutions must be approved in writing
by owner before purchase. "Or equal" means equivalent or better quality,
not cheaper alternative.
Storage: Contractor responsible for proper storage and protection of
all materials on site. Any damaged materials replaced at contractor's
expense.
Waste: Contractor responsible for disposal of all waste materials and
debris. Dumpster cost included in contract price.
Why this matters:
- Prevents cheap substitutions
- Clarifies who orders what
- Sets quality expectations
- Prevents "that costs extra" surprises
6. Code Compliance and Inspections
What to include:
CODE COMPLIANCE:
All work shall comply with:
- 2021 International Residential Code (IRC)
- Local amendments and requirements
- All applicable building, plumbing, electrical, and mechanical codes
- Energy code requirements
- Manufacturer's installation instructions
INSPECTIONS:
Contractor shall:
- Schedule all required inspections
- Be present for inspections (or ensure qualified representative present)
- Pass all inspections on first attempt if work is performed correctly
- Correct any failed inspection items at contractor's sole expense
- Provide owner with copies of passed inspection reports
If inspection fails due to contractor error or code non-compliance:
- Contractor pays all re-inspection fees
- Contractor makes corrections at own expense
- Timeline extends without penalty to owner
- Owner has right to hire third party to correct at contractor's expense
if contractor unable to pass within 10 days
Owner's Right: Owner or owner's representative may be present for all
inspections but is not required to be present.
Why this matters:
- Makes contractor responsible for code compliance
- Clarifies who pays for failed inspections
- Protects you from code violations
- Ensures proper work
"Failed inspections corrected at contractor expense." This single line shifts the cost of rework to where it belongs.
7. Insurance and Licensing Requirements
What to include:
INSURANCE:
Contractor warrants they maintain:
1. General Liability Insurance: Minimum $1,000,000 per occurrence,
$2,000,000 aggregate
2. Workers' Compensation Insurance: As required by state law for all
employees
3. Automobile Insurance: For all vehicles used on project
Contractor shall:
- Provide certificates of insurance before starting work
- Name owner as additional insured on general liability policy
- Maintain insurance throughout project and warranty period
- Notify owner immediately if insurance lapses or is cancelled
- Provide 30-day notice if insurance will not be renewed
If insurance lapses:
- Owner may stop payment until insurance reinstated
- Owner may purchase insurance and deduct cost from payments
- Contract may be terminated for cause
LICENSING:
Contractor warrants:
- They hold valid [STATE] contractor license #[NUMBER]
- License is current and in good standing
- All workers are properly licensed for their trade
- Will comply with all licensing requirements
- Will post license at job site if required
Contractor shall immediately notify owner if license is suspended,
revoked, or otherwise invalid.
| Coverage | Minimum to require | Why |
|---|---|---|
| General Liability | $1,000,000 per occurrence / $2,000,000 aggregate | Covers property damage and third-party injury from the work |
| Workers' Compensation | As required by state law for all employees | Covers the sub's injured workers — see the statutory-employer warning below |
| Automobile | For all vehicles used on the project | Covers vehicles operating on and around your site |
Why this matters:
- Protects you from liability for injuries
- Ensures work is by licensed professionals
- Gives you recourse if coverage lapses
- Commonly required by contract or by your construction lender (note: specific general-liability dollar limits like $1M/$2M are a contractual and lender norm — they are not set by the building code)
This is one of the biggest owner-builder liability traps. If a subcontractor or one of their workers is hurt on your project and that sub doesn't carry workers' compensation insurance, many states will treat you, the owner-builder, as the "statutory employer." That can leave you personally on the hook for the injured worker's workers'-comp benefits and medical liability — and even the unpaid premium.
Protect yourself: get a current certificate of workers'-comp insurance from every single sub (not just general liability) before they set foot on site, verify it directly with the insurer, and keep it on file. The exact rule and any sole-proprietor exemptions vary by state, so confirm your state's requirement.
Deal breaker: Never waive insurance requirements
8. Warranty
What to include:
WARRANTY:
Workmanship Warranty:
Contractor warrants all work shall be:
- Free from defects in workmanship for [1-2] years from completion
- Performed in professional and workmanlike manner
- In compliance with all applicable codes
- Suitable for its intended purpose
Material Warranty:
- Materials carry manufacturer's warranty
- Contractor assigns all manufacturer warranties to owner
- Contractor responsible for warranty service during first year
Warranty Service:
- Owner shall notify contractor in writing of any defects
- Contractor shall repair defects within 10 business days of notice
- If contractor fails to repair, owner may hire others and back-charge
contractor
- Warranty does not cover damage from owner misuse, modification, or
normal wear
Exclusions:
- Defects caused by owner or other trades
- Modifications by owner
- Normal wear and tear
- Acts of God (flood, earthquake, etc.)
This warranty is intended to be in addition to, not in place of, any other
warranties provided by law (but whether an express warranty can substitute
for or limit those implied/statutory warranties is state-specific — see note
below).
The "in addition to, not in place of" language above reflects a common goal, but whether an express warranty can waive, replace, or limit implied or statutory warranties varies by state — you can't assume it works the same everywhere:
- Arizona generally bars waiver of the implied warranty of workmanship and habitability.
- Texas allows a properly worded express warranty to define the standard of quality (effectively limiting the implied warranty in some circumstances).
- Some other states permit an express warranty to substitute for implied warranties if specific disclaimer requirements are met.
Most states also recognize an implied warranty of habitability / good workmanship that exists independently of your contract and can run longer than the express 1-2 year term below. Don't assume a short express warranty cuts off those rights — check your state's rule (and have an attorney confirm before relying on any waiver).
| Component | Typical express warranty |
|---|---|
| Workmanship | 1-2 years (express); implied warranties may extend further |
| Structural framing | 2-5 years (sometimes) |
| Roofing | Often comes with manufacturer warranty (10-30 years) |
| HVAC | Equipment warranty (5-10 years) + installation (1-2 years) |
Why this matters:
- Holds contractor accountable after payment
- Provides recourse for defects
- Shows contractor stands behind work
- Industry standard expectation
9. Change Orders
What to include:
CHANGE ORDERS:
No changes to scope, price, or timeline are valid unless:
1. Documented in writing
2. Signed by both owner and contractor
3. Price adjustment agreed upon before work begins
4. Timeline impact documented
Change Order Process:
1. Contractor identifies needed change or owner requests change
2. Contractor provides written description and price quote
3. Owner approves or rejects in writing
4. If approved, both parties sign change order
5. Work proceeds only after signed change order
Concealed Conditions:
If contractor encounters concealed conditions materially different from
plans (rock, water, utilities, etc.), contractor shall:
- Stop work in affected area
- Notify owner immediately
- Provide change order for additional work
- Not proceed until owner approves
Emergency Changes:
In emergency situations threatening safety or property, contractor may
proceed without written change order but must:
- Notify owner immediately (phone/text/email)
- Provide written change order within 24 hours
- Owner has right to reject non-emergency portions
Change Order Form: All change orders shall include:
- Description of change
- Reason for change
- Impact on price (+ or -)
- Impact on timeline
- Signatures and date
Why this matters:
- Prevents unauthorized work
- Controls costs
- Documents all changes
- Prevents "he said, she said"
"Nothing is approved unless signed by both parties." Verbal change approvals are how budgets quietly blow up.
10. Termination Provisions
What to include:
TERMINATION:
Termination for Cause (by owner):
Owner may terminate immediately if contractor:
- Abandons the work
- Fails to perform work according to schedule without valid reason
- Performs defective work repeatedly and fails to correct
- Fails to comply with code requirements
- Insurance or license lapses
- Violates material terms of contract
Upon termination for cause:
- Owner pays only for work properly completed to date (minus damages)
- Owner may hire others to complete work
- Contractor liable for cost difference between this contract and
completion cost
- Owner may use retention and unpaid amounts to cover damages
Termination for Convenience (by owner):
Owner may terminate for any reason with 7 days written notice.
Upon termination for convenience:
- Owner pays for all work properly completed to date
- Owner pays for materials ordered/delivered for this project
- Contractor removes all tools and equipment within 5 days
- No additional compensation owed
Suspension:
Owner may suspend work for up to 30 days without penalty. If suspension
exceeds 30 days, contractor may terminate and be paid for work complete.
Why this matters:
- Provides exit strategy if contractor fails
- Defines what happens to money
- Protects you from abandonment
- Clarifies each party's rights
You can fire them for cause, but they still don't get paid for incomplete or defective work.
11. Lien Releases
What to include:
LIEN RELEASES:
Conditional Lien Release:
With each payment request, contractor shall provide a conditional lien
release covering all work through that payment period. Release becomes
effective upon payment clearing.
Final Unconditional Lien Release:
Before final payment, contractor shall provide:
- Unconditional lien release for all work performed
- Lien releases from all subcontractors and suppliers
- Affidavit that all suppliers and subs have been paid
Contractor Warranties:
Contractor warrants:
- No liens have been filed against the property for this work
- All subcontractors and suppliers have been paid
- Contractor indemnifies owner against any liens arising from this work
If Lien is Filed:
If any lien is filed against property for this work:
- Contractor shall remove lien within 10 days
- Owner may withhold all payments until lien removed
- Owner may pay lien claimant directly and deduct from contractor payment
- Contractor liable for all legal fees to remove lien
| Lien release | When to collect | What it covers |
|---|---|---|
| Conditional release | With each payment request | Work through that payment period; becomes effective once payment clears |
| Final unconditional release | Before final payment | All work performed, plus releases from all subs and suppliers and an affidavit they've been paid |
Why this matters:
- Protects your property from liens
- Ensures subcontractors are paid
- Provides leverage for final payment
- Legal requirement in many states
Mechanic's lien: Legal claim against your property for unpaid work
- Can force sale of property to pay debt
- Can block refinancing or sale
- Expensive to remove ($5,000-20,000 in legal fees)
- Prevented by proper lien releases
- The deadline to file varies widely by state — from roughly 30 days to a year after work or last furnishing — so look up your state's specific window and set your final-payment and retainage timing around it
12. General Provisions
What to include:
GENERAL PROVISIONS:
Site Access and Utilities:
- Owner provides access to site during business hours (7 AM - 6 PM)
- Owner provides access to electricity and water
- Contractor responsible for all other utilities needed
- Contractor shall secure site at end of each day
Permits and Fees:
- Owner responsible for obtaining building permit
- Contractor responsible for scheduling inspections
- Owner pays permit fees
- Contractor pays any re-inspection fees due to failed inspections
Safety:
- Contractor responsible for all safety measures and OSHA compliance
- Contractor maintains safe work site
- No dangerous conditions left unattended
- Contractor provides all required safety equipment for their workers
Cleanup:
- Contractor maintains reasonably clean site during work
- Daily cleanup of debris and hazards
- Final cleanup to broom-clean condition
- All waste properly disposed
Damage:
- Contractor responsible for protection of all completed work
- Contractor repairs any damage caused by their work
- Contractor liable for damage to neighboring property
Independent Contractor:
- Contractor is independent contractor, not employee
- Contractor responsible for all taxes
- Contractor provides all tools and equipment
- Contractor controls means and methods
Indemnification:
- Contractor shall indemnify and hold owner harmless for claims arising
from contractor's work, to the fullest extent permitted by [STATE] law
Dispute Resolution:
- Good faith negotiation first
- Mediation before litigation
- Arbitration if mediation fails
- Prevailing party recovers attorney fees
Governing Law:
This contract governed by laws of [STATE].
Entire Agreement:
This contract represents entire agreement between parties. No verbal
agreements are valid. Any modifications must be in writing signed by both parties.
Severability:
If any provision found invalid, remaining provisions remain in effect.
Broad indemnification has limits. A clause that makes the contractor indemnify you for your own negligence may be limited or voided by your state's anti-indemnity statute — many states restrict or prohibit indemnity for the indemnitee's own fault in construction contracts. That's why the indemnity language above says "to the fullest extent permitted by [STATE] law." Don't assume an unlimited indemnity will hold up.
Calling someone an "independent contractor" doesn't make them one. A contract recital is just a label. Whether a worker is truly an independent contractor (vs. your employee) is decided by the actual working relationship under the IRS common-law test and your state's classification test — and a growing number of states apply the stricter ABC test. Misclassification can expose you to back taxes, workers'-comp liability, and penalties regardless of what the contract says.
13. Signatures and Dates
What to include:
SIGNATURES:
The parties agree to the terms above on the dates indicated:
CONTRACTOR: DATE:
_____________________________ __________
[Business Legal Name]
By: [Name, Title]
License #: [Number]
OWNER-BUILDER: DATE:
_____________________________ __________
[Your Name]
EXHIBITS ATTACHED:
☐ Exhibit A: Plans and Specifications
☐ Exhibit B: Material Specifications
☐ Exhibit C: [Other documents]
☐ Exhibit D: Payment Schedule
☐ Exhibit E: Change Order Form
Why this matters:
- Makes contract legally binding
- Documents date of agreement
- Confirms parties reviewed and agreed
- Required for enforcement
Both parties must sign. Keep original and provide copy to contractor.
Contract Formats and Templates
You have four realistic ways to paper a deal. Here's how they compare.
| Option | Best for | Cost | Trade-off |
|---|---|---|---|
| AIA contract (A101/A102 + A201) | Large projects | $50-150 per template | Professional and legally vetted, but complex and may need an attorney to customize |
| Simple custom contract | Smaller projects | $200-500 (attorney review) | Tailored and readable, but may miss legal protections without review |
| Contractor's standard contract | Established contractors who have one | Varies | Familiar to the contractor, but often favors them and missing owner protections |
| State association template | Members of a home builders association | $0-50 for members | Inexpensive starting point; still review for completeness |
Option 1: Use AIA Contract (Recommended for Large Projects)
American Institute of Architects standard contracts:
- For an owner-to-general-contractor agreement, use AIA A101 or A102 (Owner-Contractor Agreement), paired with A201 General Conditions. (AIA A401 is the standard form between a contractor and a subcontractor, not the owner-contractor form.)
- Industry-standard language
- Legally vetted
- Cost: $50-150 per template
- Available at www.aiacontracts.org
Pros: Professional, comprehensive, legally sound Cons: Complex, expensive, may need attorney to customize
Option 2: Simple Contract (Good for Smaller Projects)
Create your own using elements above:
- Include all 13 essential elements
- Use plain language
- Be specific
- Have attorney review ($200-500)
Pros: Tailored to your project, understandable Cons: May miss legal protections without attorney review
Option 3: Contractor's Standard Contract
Use contractor's contract if they have one:
- Many established contractors have standard agreements
- Review carefully for all essential elements
- Add missing provisions
- Have attorney review
Pros: Contractor is used to their contract Cons: Often favors contractor, may be missing owner protections
Start with the contractor's contract, add the missing owner protections, and have an attorney review it.
Option 4: State Association Templates
Home builder associations often provide templates:
- State Home Builders Association
- Local HBA chapters
- Often available to members
Cost: $0-50 for members
Common Contract Mistakes
Most owner-builder contract pain traces back to the same handful of avoidable mistakes.
| Mistake | What it costs | Fix |
|---|---|---|
| No written contract (handshake or verbal deal) | No legal protection; disputes inevitable | Always use a written contract, even with friends or family |
| Vague scope of work ("frame house per plans") | Disputes over what's included | Detailed scope with inclusions AND exclusions |
| Large upfront deposit (50%+) | No leverage; high risk if they disappear | Keep the deposit modest and within your state's statutory cap; tie the rest to completion |
| No timeline ("finish when done") | Endless delays; can't plan other trades | Specific start and completion dates with consequences |
| Paying before inspections pass | No leverage to fix failed inspections | Payment only after inspection passes |
| No lien-release requirement | Liens filed against your property | Conditional release with each payment, unconditional at end |
| Missing insurance requirements | Liable for injuries and damage | Require certificates before starting; verify with insurer |
| No change-order process (verbal approvals) | Disputes over what was approved and the price | All changes in writing, signed before starting |
1. No Written Contract
The mistake: Handshake deal or verbal agreement
Why people do it: Trusting relationship, seems easier
The cost: No legal protection, disputes inevitable
Fix: Always use written contract, even with friends/family
2. Vague Scope of Work
The mistake: "Frame house per plans" with no detail
Why people do it: Assuming plans are enough
The cost: Disputes over what's included
Fix: Detailed scope with inclusions AND exclusions
3. Large Upfront Deposits
The mistake: Paying 50%+ before work starts
Why people do it: Contractor asks for it, you want to secure their time
The cost: No leverage, high risk if they disappear
Fix: Keep the deposit modest (a 10-20% rule of thumb, but never above your state's statutory cap — see the deposit warning above), with the rest tied to completion
4. No Timeline
The mistake: "Start in June, finish when done"
Why people do it: Seems flexible, don't want to be unreasonable
The cost: Endless delays, can't plan other trades
Fix: Specific start and completion dates with consequences
5. Paying Before Inspections
The mistake: Paying progress payments before inspection passes
Why people do it: Contractor needs money, you want to be fair
The cost: No leverage to fix failed inspections
Fix: Payment only after inspection passes
6. No Lien Release Requirement
The mistake: Not requiring lien releases with payments
Why people do it: Don't know about liens, forget to include
The cost: Liens filed against your property
Fix: Conditional release with each payment, unconditional at end
7. Missing Insurance Requirements
The mistake: Not requiring proof of insurance
Why people do it: Taking contractor's word, seems like extra work
The cost: Liable for injuries and damage
Fix: Require certificates before starting, verify with insurer
8. No Change Order Process
The mistake: Verbal approvals for changes
Why people do it: Seems faster, trusting
The cost: Disputes over what was approved and price
Fix: All changes in writing, signed before starting
When to Have Attorney Review
Always have attorney review if:
- Contract value over $50,000
- Complex scope of work
- Using contractor's template
- High-risk trade (foundation, structural)
- Any unusual terms or provisions
- You don't understand something
Cost: $200-500 for review Value: Can save thousands in prevented problems
What attorney reviews for:
- Missing essential provisions
- One-sided terms
- Unenforceable clauses
- State law compliance
- Missing protections
When to skip: Very small projects (under $5,000), using vetted template, simple scope
Retainage Best Practices
Retainage: Money held back from payments until project complete
Retainage only exists if it's written into your contract — it is a negotiated contract term, not an automatic owner entitlement. It is also regulated by state retainage and lien law: some states cap the percentage you can hold and/or regulate how quickly it must be released, and many states exempt single-family residential projects from statutory retainage rules altogether. Confirm what your state allows before relying on the figures below, and make sure the retainage you hold is consistent with both your contract and your state's prompt-payment and lien deadlines.
Purpose:
- Ensures completion
- Helps protect against liens
- Leverages quality work
- Common (but state-regulated) contract practice
| Situation | Retainage |
|---|---|
| Standard | 10% |
| Problematic contractor | 15-20% |
| Excellent relationship | 5% |
When to retain:
- From each progress payment, OR
- From final payment only
When to release:
- All work complete
- All inspections passed
- All punch-list items done
- Lien releases provided
- After your state's mechanic's-lien deadline has run (commonly cited as ~30-60 days, but it can be much longer — see your state's lien window above), which protects against late-filed liens — subject to any state prompt-payment rule requiring earlier release
Example:
- Contract: $20,000
- Retain: 10% = $2,000
- Pay: $18,000 in progress payments
- Hold: $2,000 for 30 days after completion
- Release: $2,000 if no liens filed and no defects
Contract Checklist
Before signing:
- [ ] Contract includes all 13 essential elements
- [ ] Scope of work is detailed and specific
- [ ] Plans and specs are attached as exhibits
- [ ] Timeline is realistic and specific
- [ ] Payment schedule protects me (deposit within my state's statutory cap, progress-based)
- [ ] Insurance requirements included (verified separately)
- [ ] License number documented (verified separately)
- [ ] Warranty period specified
- [ ] Change order process defined
- [ ] Lien release requirements included
- [ ] Code compliance requirements clear
- [ ] Termination provisions fair
- [ ] I understand every provision
- [ ] Attorney reviewed (if needed)
- [ ] Both parties have signed
- [ ] Both parties have original copy
- [ ] Exhibits are attached
Don't sign until all boxes checked
After Signing
What to do:
- Keep original in safe place
- Provide copy to contractor
- Keep copy on site for reference
- Review before each payment
- Follow contract terms exactly
- Document any changes with change orders
- Use contract to resolve disputes
Don't:
- Deviate from contract terms verbally
- Ignore contract provisions
- Make payments outside contract schedule
- Approve changes without written change order
- Let contractor pressure you to skip steps
Red Flags in Contractor's Contract
When the contractor supplies the contract, scan for these clauses before you sign.
| Clause | Why it's a problem | Fix |
|---|---|---|
| Pay-when-paid ("Owner pays when owner receives funding") | Puts financing risk on contractor; creates disputes | Remove or clarify exact payment dates |
| Binding arbitration ("All disputes must be arbitrated") | May limit your legal options | Consider mediation first, then a court option |
| Limitation of liability ("Liability limited to contract price") | May not cover all damages caused | Remove or adjust to a reasonable amount |
| Vague warranty ("Standard industry warranty") | What's standard? Unenforceable | Specific warranty period and terms |
| Auto-renewal ("Contract automatically renews unless...") | Never applicable for construction | Remove completely |
| Contractor-favorable payment (50% / 40% / 10%) | Leaves you with no leverage at the end | Back-loaded schedule (e.g., 15/35/35/15) with final payment after lien release; confirm deposit is within your state's cap |
| No termination rights | Stuck with a bad contractor | Add termination provisions |
| Waiver of lien rights ("Owner waives all rights to lien releases") | Leaves you exposed to liens | Remove; add lien-release requirements |
1. Pay-When-Paid Clauses
Language: "Owner pays contractor when owner receives funding"
Problem: Puts financing risk on contractor, creates disputes
Fix: Remove or clarify exact payment dates
2. Binding Arbitration (Possibly)
Language: "All disputes must be arbitrated"
Problem: May limit your legal options
Fix: Consider changing to mediation first, then court option
3. Limitation of Liability
Language: "Contractor liability limited to contract price"
Problem: May not cover all damages caused
Fix: Remove or adjust to reasonable amount
4. Vague Warranty
Language: "Standard industry warranty"
Problem: What's standard? Unenforceable
Fix: Specific warranty period and terms
5. Auto-Renewal
Language: "Contract automatically renews unless..."
Problem: Never applicable for construction
Fix: Remove completely
6. Contractor-Favorable Payment Terms
Language: "50% deposit, 40% at midpoint, 10% at completion"
Problem: Leaves you with no leverage at end
Fix: Revise to a back-loaded schedule (e.g., 15/35/35/15) with final payment after lien release — and confirm the deposit does not exceed your state's statutory cap (which may be the lesser of 10% or $1,000)
7. No Termination Rights
Language: Contract doesn't mention termination
Problem: Stuck with bad contractor
Fix: Add termination provisions
8. Waiver of Lien Rights
Language: "Owner waives all rights to lien releases"
Problem: Leaves you exposed to liens
Fix: Remove, add lien release requirements
Sample Simple Contract Template
Here's a basic template incorporating all essential elements:
[Available for download - would be a separate PDF/template file]
Key sections:
- Parties and property (1 page)
- Scope of work (2-3 pages + exhibits)
- Timeline (1 page)
- Payment schedule (1 page)
- Insurance and licensing (1 page)
- Code compliance (1 page)
- Warranty (1 page)
- Change orders (1 page)
- General provisions (2 pages)
- Signatures (1 page)
Total: 11-13 pages + exhibits
This length is normal. Anything shorter is probably missing protections.
Next Steps
Once you have signed contracts:
-
Manage the Work → - Day-to-day management during construction
-
Payment Best Practices → - When and how to pay according to contract
-
Handle Problems → - What to do when contract terms are violated
**Remember