Workmanship Warranty Template for Contractors (2026)

A workmanship warranty template is the written promise a contractor gives that their labor and installation will be free from defects for a set period, usually one year, with free repairs if something they did fails. It is different from the manufacturer's warranty on materials, and confusing the two is one of the biggest sources of contractor disputes. Below you will find what a good warranty covers and excludes, how long to offer, the federal rules that can apply, a sample template you can adapt, and how to tie the warranty to your final invoice.

This is general information, not legal advice. Contractor warranty rules vary by state, especially for new homes, so have your final wording reviewed by a local attorney.

Workmanship warranty vs manufacturer warranty

Feature	Workmanship warranty	Manufacturer (product) warranty
Who gives it	The contractor or installer	The product maker
What it covers	Defects caused by installation, labor and methods	Defects in the product itself
Typical length	1 year common; 2-10 years for some trades	Varies widely by product
Who fixes it	The contractor	The manufacturer, sometimes via the installer
Common conditions	Payment in full, proper maintenance, no alterations by others	Registration, approved installation, maintenance

Note the overlap: many manufacturers only honor their product warranty if the product was installed according to their instructions. Poor installation can void the product warranty, which then lands on your workmanship warranty.

When federal warranty law applies

The Magnuson-Moss Warranty Act governs written warranties on consumer products. According to the FTC's Businessperson's Guide to Federal Warranty Law:

• The Act covers goods, not standalone services, but it does apply when a warranty covers both replacement parts and the workmanship of a repair.
• Consumer products include items attached to or installed on real property, such as carpet, and the FTC's carpet example covers installation.
• Written warranties on products costing more than $10 must be titled "full" or "limited."
• The Disclosure Rule and Pre-Sale Availability Rule apply to products costing more than $15.
• If you give a written warranty on a consumer product, you cannot disclaim implied warranties; with a limited warranty you may limit their duration to the length of your warranty.

Most contractors label their warranty "limited," because a "full" warranty carries stricter federal requirements, including no time limit on implied warranties. Separately, state law may give homeowners implied warranties of good workmanship or habitability, especially for new homes, regardless of what your contract says.

What to include in a workmanship warranty template

1. Title: "Limited Workmanship Warranty."
2. Parties and project: your legal business name and license number, the customer's name and the property address.
3. Scope of work covered: reference the contract or estimate number so the warranty covers exactly what you did.
4. Warranty period and start date: for example, one year from the date of substantial completion.
5. What you will do: repair or, at your option, replace defective workmanship at no charge for labor and materials needed to correct it.
6. Exclusions: list them clearly (see below).
7. Conditions: payment in full, reasonable maintenance, prompt written notice.
8. Claim process: how to notify you, how fast you will inspect, and access to the property.
9. Manufacturer warranties: state that product warranties are passed through to the customer and are not part of your warranty.
10. Limitation of damages where state law allows, and a statement that some states do not allow limitations.
11. Transferability: whether a new owner can claim if the home is sold.
12. Signatures and date.

Common exclusions

• Normal wear and tear, fading and weathering.
• Damage from misuse, neglect, accidents or failure to maintain.
• Work altered or repaired by anyone other than you.
• Acts of nature: storms, floods, earthquakes, hail above stated limits.
• Settling, shrinkage or movement of the structure.
• Materials supplied by the customer.
• Pre-existing conditions you noted in the estimate.
• Cosmetic variations in natural materials such as stone and wood.
• Consequential damage such as mold or loss of use, where the law allows you to exclude it.

Sample workmanship warranty template

Adapt the brackets, then have it reviewed for your state.

LIMITED WORKMANSHIP WARRANTY

[Contractor Legal Name], License No. [number] ("Contractor"), warrants to [Customer Name] ("Owner") that the work performed at [Property Address] under Contract/Estimate No. [number] dated [date] will be free from defects in workmanship for [one (1) year] from the date of substantial completion, [date] ("Warranty Period").

Remedy. If a defect in Contractor's workmanship appears during the Warranty Period, Contractor will, at its option, repair or replace the defective work at no charge to Owner for labor and materials required to correct the defect.

Conditions. This warranty takes effect when Contractor's final invoice is paid in full. Owner must notify Contractor in writing within [30] days of discovering a defect and allow reasonable access for inspection and repair.

Exclusions. This warranty does not cover [list exclusions].

Manufacturer warranties. Products and materials are covered only by their manufacturers' warranties, which Contractor passes through to Owner. Contractor will provide copies on request.

Limitations. To the extent permitted by law, Contractor is not liable for incidental or consequential damages. Some states do not allow these limitations, so they may not apply to you. This warranty gives you specific legal rights, and you may also have other rights that vary from state to state.

Transfer. This warranty [is / is not] transferable to a subsequent owner of the property.

Contractor signature / date. Owner signature / date.

Step by step: issuing and managing warranties

1. Put the warranty terms in the contract or attach them to the estimate, so the customer agrees before work starts. Our estimate template guide shows where terms go.
2. Record completion. Note the substantial completion date and get the customer's sign-off, with photos.
3. Issue the final invoice with a warranty line and the completion date.
4. Send the warranty certificate and manufacturer warranties once paid.
5. Log every warranty by job, address and expiry date.
6. Handle claims fast. Inspect, decide if it is workmanship, a product defect or excluded, and reply in writing.
7. Bill non-warranty work separately. If the issue is excluded, give a quote before doing anything.

Worked example: a deck builder's warranty claim

This example is illustrative. A deck contractor builds a $18,400 composite deck, completed June 12, 2026, with a one-year limited workmanship warranty that starts on payment in full. The customer pays the final invoice of $9,200 on June 20.

In October, the customer reports two problems:

• Several boards have lifted at one end. The contractor finds the hidden fasteners were spaced wider than the manufacturer specifies. That is workmanship, so the contractor refastens the boards at no charge, about $650 of labor and parts absorbed.
• Surface staining from a planter. The board manufacturer's stain warranty and the contractor's exclusions both exclude stains from planters and spills, so the contractor explains this in writing, recommends a cleaner, and offers a $180 quote for professional cleaning.

The contractor sends a $0 warranty service record for the first item and a separate quote for the second. Clear paperwork kept a potential dispute to a 15-minute conversation. For extra work requested during the original job, the contractor used a written change order, so there was no question about what the warranty covered.

Pricing the warranty into your jobs

Warranty callbacks cost money. Track the labor and materials you spend on warranty repairs as a percentage of revenue each year, and build a small reserve into your pricing. If callbacks run at 1% of revenue, add that to your overhead calculation. Longer warranties win jobs but increase this cost, so offer them only for work where your failure rate is genuinely low.

What to do if a customer disputes a warranty decision

Disagreements usually come down to whether a problem is workmanship, a product defect or an excluded cause. Inspect promptly, take dated photos, and compare what you see with the manufacturer's installation instructions. Put your decision in writing with the reason and the relevant warranty wording. If the customer still disagrees, offer a second opinion from the manufacturer's representative or an independent inspector. A modest goodwill repair is often cheaper than a dispute, but record it as goodwill so it does not set a precedent.

Common workmanship warranty mistakes

• No written warranty at all. Customers will assume a longer and broader one than you intended.
• Unclear start date. Use substantial completion or payment date, and say which.
• Promising a "lifetime" warranty without defining whose lifetime or what it covers.
• Mixing up product and labor warranties. Spell out which is which.
• Doing warranty work for excluded problems without a quote, then trying to bill afterward.
• Forgetting lien rights. Warranty terms do not replace your lien rights or the paperwork around them; see our lien waiver guide.

Show the warranty on your invoices

Your final invoice is the natural place to anchor the warranty: list the work completed, the completion date, the contract reference, and a line such as "One-year limited workmanship warranty from 06/12/2026, effective upon payment in full. See attached certificate." Our contractor invoice template and remodeling invoice template show the layout, and our service agreement template covers the contract side. If customers sign releases for site visits, see the sibling liability waiver template.

Create a final invoice with your warranty terms in the notes using our free invoice generator: no sign-up, add your license number and completion date, and download a professional PDF for the customer's records.