| # | Category | Years | ||
|---|---|---|---|---|
| 1 | ||||
| 2 | ||||
| 3 | ||||
| 4 | ||||
| 5 | ||||
| 6 | ||||
| 6 coverage categories | Up to 10yr |
Standard Exclusions
- Normal wear and tear from regular use
- Damage caused by homeowner modifications or unauthorized repairs
- Damage from natural disasters, flooding, or acts of God
- Cosmetic issues caused by settling, shrinkage, or seasonal movement
- Manufacturer defects in appliances, fixtures, or materials (covered by manufacturer warranty)
- Damage from failure to perform routine maintenance
- Pest or insect damage
- Issues caused by changes to landscaping, grading, or drainage after project completion
Warranty Claim Process
- Written Notice. Homeowner must submit written notice to the contractor within 30 days of discovering a defect. Notice must describe the issue, its location, and when it was first observed.
- Inspection. Contractor will schedule an inspection within 14 business days of receiving written notice. Homeowner must provide reasonable access to the property.
- Repair. If the defect is covered under this warranty, the contractor will repair or correct the issue at no cost to the homeowner. The contractor chooses the method of repair.
- Emergency Issues. Active leaks, electrical hazards, or structural safety concerns will be addressed within 48 hours of notification. Call the contractor directly for emergencies.
- Dispute Resolution. If the parties disagree on whether a defect is covered, both parties agree to seek mediation before pursuing legal action.
Letter Preview
Standard Warranty Periods by Trade
Typical contractor warranty periods based on industry standards and state requirements.
| Work Category | Typical Period |
|---|---|
| General Workmanship | 1 year |
| Plumbing Systems | 2 years |
| Electrical Systems | 2 years |
| HVAC Installation | 2 years |
| Roofing (labor) | 2-5 years |
| Waterproofing | 5 years |
| Structural Work | 10 years |
| Windows (labor) | 2 years |
| Painting (exterior) | 2-3 years |
| Painting (interior) | 1 year |
12,800+ estimates calculated this month
Last updated: 2026-03-28
Quick Answer: What Goes in a Contractor Warranty Letter?
A contractor warranty letter guarantees the quality of work you performed on a project. It lists each category of work (workmanship, plumbing, electrical, structural), the warranty period for each, what is excluded, and how the homeowner files a claim. The letter is signed by both parties and attached to the contract. Standard workmanship warranties are 1 year, systems warranties are 2 years, and structural warranties are 5-10 years.
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What your warranty letter needs
- Contractor name, license number, and contact information
- Homeowner name and project address
- Project description and contract amount
- Warranty coverage categories with specific periods
- List of exclusions (what is not covered)
- Claim process with notice period and response timeline
- Signatures from both contractor and homeowner
Warranty Periods by Project Type
| Project Type | Workmanship | Systems | Structural |
|---|---|---|---|
| Kitchen Remodel | 1 year | 2 years | N/A (unless walls moved) |
| Bathroom Remodel | 1 year | 2 years | 5 years (waterproofing) |
| Room Addition | 1 year | 2 years | 10 years |
| New Construction | 1 year | 2 years | 10 years |
| Roof Replacement | 2-5 years (labor) | N/A | N/A |
| Exterior Painting | 2-3 years | N/A | N/A |
Worked Examples: Real Warranty Letters
Example A: Kitchen remodel, $45,000 contract
- General Workmanship (1 year): cabinets, countertop install, backsplash, trim, paint
- Plumbing (2 years): sink, faucet, dishwasher, disposal connections
- Electrical (2 years): outlets, undercabinet lighting, appliance circuits
- Flooring (1 year): tile or hardwood installation
- Claim process: 30-day notice, 14-day inspection, contractor repairs at no cost
Example B: Bathroom remodel, $18,000 contract
- General Workmanship (1 year): tile, vanity install, trim, paint
- Plumbing (2 years): toilet, shower valve, drain connections
- Waterproofing (5 years): shower pan, tub surround, moisture barrier
- Electrical (2 years): GFCI outlets, exhaust fan, lighting
Example C: New home, $350,000 contract
- General Workmanship (1 year): all finish work, drywall, paint, trim, flooring
- Plumbing (2 years): all supply, drain, vent, and fixture connections
- Electrical (2 years): all wiring, panels, circuits, fixtures
- HVAC (2 years): ductwork, refrigerant lines, thermostat wiring
- Roofing (5 years): shingles, underlayment, flashing, ventilation
- Structural (10 years): foundation, framing, load-bearing walls
Need to create the estimate before writing the warranty? Use the contractor estimate template to build a professional bid. For setting up the payment schedule, the contractor payment schedule template creates milestone-based draws. For tracking scope changes during the project, use the change order template.
State Warranty Laws for Contractors
Many states have implied warranty statutes that set minimum warranty periods for residential construction. These apply even if the written warranty says something different. Always check your state contractor board for current requirements.
| State | Implied Warranty Period | Notes |
|---|---|---|
| California | 1 yr workmanship, 4 yr systems, 10 yr structural | SB 800 (Right to Repair Act) governs residential |
| Texas | 1 yr workmanship, 2 yr systems, 10 yr structural | RCLA (Residential Construction Liability Act) |
| Florida | 1 yr workmanship, 3 yr systems, 10 yr structural | Florida Building Code 558 |
| New York | 1 yr workmanship, 2 yr systems, 6 yr structural | General Business Law Article 36-B (Housing Merchant) |
| Washington | Varies by claim type | 6-year statute of repose for construction defects |
Pro Tips From the Field
- Always provide a written warranty. Verbal promises mean nothing when a homeowner calls 18 months later about a leaking shower. A signed warranty letter defines exactly what you will and will not fix, and it prevents arguments about what was promised.
- Separate your labor warranty from manufacturer warranties. Your 2-year plumbing warranty covers your pipe connections and installations. The faucet manufacturer covers the faucet itself. Make this distinction clear so homeowners contact the right party for each issue.
- Require written notice for all claims. A phone call is fine for emergencies, but every warranty claim should have a written record. This protects both parties and creates documentation if there is ever a dispute.
- Keep warranty periods realistic. A 1-year workmanship warranty is industry standard for a reason. Offering 5 years on drywall to win a bid will cost you money when normal settling cracks show up in year 3. Price your warranties into the job if you offer extended coverage.
- Make the warranty transferable. It costs you nothing and it is a selling point for the homeowner. If they sell the house during the warranty period, the new owner gets the remaining coverage. Homeowners love this and it differentiates you from competitors who do not offer it.
- Include the warranty letter with every final packet. Along with the final invoice, lien waiver, and certificate of completion, the warranty letter should be part of the close-out package. This shows professionalism and gives the homeowner a clear reference document.
Common Mistakes to Avoid
- Not having a written warranty at all. Many contractors skip this entirely and rely on verbal promises. When a callback comes 6 months later, there is no agreed-upon process and both sides argue about what was said. A written warranty prevents this entirely.
- Overpromising warranty periods to win the bid. Offering a 10-year general workmanship warranty sounds great during the sales pitch, but you will be paying for callback repairs long after the profit from the job is gone. Stick to industry-standard periods and price them into your overhead.
- Not listing exclusions. If your warranty does not clearly state that settling cracks, paint fading, and homeowner modifications are excluded, the homeowner will assume everything is covered. Be specific about what is and is not included.
- Forgetting to separate labor and material warranties. When a hot water heater fails 3 years after installation, the homeowner calls you. If your warranty letter does not clearly state that equipment is covered by the manufacturer, you will end up in an unnecessary argument.
- No claim process. Without a defined process (written notice, inspection timeline, repair terms), warranty claims turn into phone calls, text arguments, and bad reviews. Define the process in writing so both parties know what to expect.
Ready to handle estimates, contracts, warranties, and follow-up from one platform? Try EstimationPro free to build professional estimates, send proposals automatically, and manage your entire client workflow from estimate to final payment.
How to Use This Calculator
Enter contractor and project details
Fill in your company name, license number, homeowner name, project address, contract amount, and completion date. This information prints on the warranty letter.
Choose a warranty template
Select a preset template for your project type (kitchen remodel, bathroom remodel, full remodel, or new construction) or customize your own coverage categories.
Adjust coverage categories and periods
Click any row to edit the category name, description, and warranty period in years. Add or remove categories to match the work you performed. Standard periods range from 1 year for workmanship to 10 years for structural.
Print or copy the warranty letter
Review the exclusions and claim process sections, then click Print for a clean document or Copy to paste into your contract package. Both contractor and homeowner should sign and date the letter.
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Frequently Asked Questions
What is a contractor warranty letter?
A contractor warranty letter is a written document provided by the contractor to the homeowner that guarantees the quality of work performed during a construction or remodeling project. It specifies what is covered, how long coverage lasts, what is excluded, and how the homeowner can file a warranty claim. The letter becomes part of the contract package and is legally enforceable when signed by both parties.
How long should a contractor warranty last?
Warranty periods vary by trade. General workmanship is typically warranted for 1 year. Plumbing and electrical systems are usually 2 years. Roofing and waterproofing are 2-5 years for labor (separate from manufacturer material warranties). Structural work like foundations and framing is typically 10 years. Many states have implied warranty laws that may extend these periods regardless of what the contract says.
Are contractors legally required to provide a warranty?
Most states have implied warranty of workmanship laws that require contractors to deliver work that meets industry standards, even without a written warranty. However, a written warranty letter is better for both parties because it defines specific coverage periods, exclusions, and the claim process. States like California, Texas, Florida, and New York have specific statutes on construction warranties. Check your state contractor board for local requirements.
What should be excluded from a contractor warranty?
Standard exclusions include: normal wear and tear, damage from homeowner modifications or unauthorized repairs, natural disasters, cosmetic issues from settling or seasonal movement, manufacturer defects (covered by the manufacturer, not the contractor), damage from lack of maintenance, pest damage, and issues caused by changes to landscaping or drainage after project completion. Clearly listing exclusions prevents disputes.
Is a contractor warranty transferable to a new homeowner?
Most contractor warranties can be transferable if the warranty letter states it. This is a selling point for homeowners and adds value to the property. The warranty follows the property, not the person, for the remaining coverage period. If transferability is not stated in the warranty, courts may or may not enforce it depending on state law. It is best to include a clear transferability clause.
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