New home builder warranty — what's covered, what's not, and how to claim

A new home builder warranty in the US typically provides one year of coverage for workmanship defects, two years for major systems like plumbing, electrical, and HVAC, and ten years for structural defects — but there is no federal law requiring builders to offer any warranty at all, and what is actually covered varies significantly by state, builder, and warranty provider. Understanding the structure of your warranty before you need it is the only way to make sure you can actually use it.

This guide breaks down the typical warranty structure found in new construction contracts, what the common exclusions mean in practice, how third-party warranty programs work, and the steps you need to take to file a claim and protect your rights if a builder refuses to act.

There is no federal builder warranty law

This surprises many buyers. Unlike consumer product warranties governed by the federal Magnuson-Moss Warranty Act, there is no federal statute that requires a homebuilder to provide a warranty on a new home. What you have instead is:

1. State law — some states require builders to provide specific warranty coverage by statute. The scope and duration varies widely. Virginia, for example, has a one-year workmanship warranty implied by law regardless of the contract. Other states offer less statutory protection and rely more heavily on common law remedies.

2. Your purchase contract — most builders include a written express warranty as part of the contract. The terms of this warranty govern what is covered, for how long, and what process you must follow to make a claim.

3. Third-party warranty providers — many builders use third-party administrators to back their warranties. These providers create consistency and, in some cases, are required by the lender (particularly for certain FHA and VA loan products).

4. Implied warranties — even where no express warranty exists, courts in most states recognize implied warranties for new construction, including the implied warranty of habitability. This means that even if your builder didn’t explicitly promise that the home would be livable, the law implies that promise. Significant defects that render a home unsafe or unfit for habitation can give rise to claims under this doctrine even outside of any written warranty period.

The NAHB (National Association of Home Builders) publishes guidelines that many builders reference when defining what constitutes an acceptable defect versus a warranty claim. Understanding NAHB’s performance tolerances helps you assess whether a builder’s denial of a warranty claim is legitimate or pretextual.

The 1-2-10 warranty structure

The “1-2-10” structure is the industry-standard warranty framework used by most major builders and third-party warranty providers in the US, though individual implementations vary:

Year 1: Workmanship warranty

Covers defects in materials and workmanship — essentially, anything that was installed or built incorrectly. Common examples:

• Paint and drywall imperfections that become apparent after move-in
• Doors that won’t close properly due to framing issues
• Grout cracking in tile due to poor installation technique
• Caulking failures at wet area transitions
• Hardware installed incorrectly or missing
• Flooring that squeaks, buckles, or gaps due to improper installation

Year 1 is the broadest coverage period. Builders typically want to close out year-1 claims quickly, and this is the period when they’re most likely to respond promptly to written notice.

Year 2: Systems warranty

Covers defects in major home systems, specifically:

• Electrical systems (wiring, panel, outlets, fixtures)
• Plumbing systems (pipes, supply and drain lines, water heater connections)
• HVAC systems (air handler, condensing unit, ductwork, controls)

Defects in these systems covered under the 2-year window typically means the system fails to function as designed or delivers inadequate performance — not cosmetic issues with switch plates or vent covers, which would fall under year 1 workmanship.

Years 1–10: Structural warranty

Covers defects in structural elements, including:

• Foundation (slab, crawl space, basement walls, footings)
• Load-bearing walls
• Roof framing and structural sheathing
• Beams, columns, and girders
• Floor and ceiling framing systems

The structural warranty is the most consequential but also the most narrowly applied. Not every crack in a foundation is a structural defect. Builders and warranty administrators typically require the defect to affect the structural integrity of the building — not merely its appearance or surface condition.

Third-party warranty providers

Many builders, particularly mid- to large-volume production builders, use third-party administrators to back their warranty programs. The major providers you’ll encounter are:

2-10 Home Buyers Warranty (2-10 HBW): One of the largest third-party warranty providers in the US, offering the 1-2-10 structure to builders as a branded program. If your builder uses 2-10 HBW, you receive a warranty booklet separate from your purchase contract — read both carefully.

Residential Warranty Corporation (RWC): Another major third-party provider, similar structure. Common among regional and mid-size builders.

PWSC (Professional Warranty Service Corporation): Used by some of the largest national builders.

The advantage of a third-party provider is that the warranty coverage doesn’t depend solely on your builder remaining in business. If your builder goes bankrupt or dissolves — not an uncommon outcome for smaller builders — a third-party warranty may still be enforceable. The disadvantage is that the claims process is now with a third party who has commercial interests in limiting payouts, not your builder who has a reputational interest in your satisfaction.

What is not covered

Builder warranty exclusions are detailed in the fine print and vary by program, but common categories of exclusions include:

• Normal wear and tear: Scratches, scuffs, and gradual deterioration from ordinary use are not warranty defects
• Homeowner-caused damage: Any defect resulting from the homeowner’s actions, modifications, or failure to maintain the home is excluded
• Cosmetic variation: Many programs exclude items that are within NAHB performance tolerances, even if you find the result aesthetically substandard
• Landscaping: Sod, plants, trees, and irrigation systems are frequently excluded or covered for a very short period only
• Appliances: Appliances installed by the builder typically have their own manufacturer warranties and are excluded from the builder’s warranty
• Secondary damage: If a plumbing leak causes damage to your flooring and drywall, the warranty may cover the plumbing failure but not the consequential damage — though this varies
• Maintenance failures: If you don’t perform routine maintenance (HVAC filter changes, caulking re-application) and a defect results, the builder or warranty provider may deny the claim on maintenance failure grounds

How to file a warranty claim

Step 1: Document the defect thoroughly

Photograph the defect from multiple distances and angles. Include a reference object for scale. Note the date of discovery, the location in the home, and a clear written description of what you’re seeing. If there’s visible deterioration over time, photograph it repeatedly to establish a progression.

The documentation you create at this stage is your evidence. A warranty administrator or arbitrator cannot review a defect they can’t see, and your verbal description carries less weight than a clear dated photograph.

Step 2: Submit written notice

Check your warranty documents for the specific notice requirements — many warranties require notice in writing within a specific window after the defect is discovered. Most require written notice delivered by certified mail or email to a specified address. Keep copies of everything.

Your written notice should include:

• Your name, address, and closing date
• The warranty claim number or policy number if you have one
• A description of each defect, including location and when first noticed
• Attached photos
• A request for inspection and repair within a reasonable timeframe

Under your state’s notice-and-cure laws, giving the builder proper written notice is typically a legal prerequisite to any further action. Many states require this notice and a reasonable cure period (often 60 days) before you can sue or file a complaint.

Step 3: Allow the right to inspect and cure

After your written notice, the builder or warranty administrator has the right to inspect the claimed defect and perform repairs. Do not hire your own contractor to fix the issue before giving them this opportunity — doing so may void the warranty claim. If you must act immediately for safety or habitability reasons, document why and notify the builder immediately that you’re acting due to urgency.

Step 4: Escalate if they refuse or delay

If the builder or warranty administrator denies the claim, delays unreasonably, or makes repairs that fail to resolve the issue:

• Contact your state contractor licensing board. If the builder holds a state contractor license (required in most states), licensing boards take complaints about defective workmanship. A licensing complaint doesn’t directly repair your home, but it creates a formal record and can motivate response.

• File a complaint with your state attorney general or consumer protection office. Some states have consumer protection provisions that apply to new home warranties.

• Review your arbitration clause. Most new construction contracts contain mandatory arbitration clauses requiring disputes to go to a private arbitrator rather than to court. If your contract includes this language, that is your dispute resolution path — not litigation. The arbitration process and costs are worth understanding before you’re in a dispute.

The arbitration warning

Mandatory arbitration clauses are standard in new home purchase contracts from most large builders. These clauses require that any dispute about the home — including warranty disputes — be resolved through private arbitration rather than a jury trial. The arbitrator’s decision is typically final and binding, with very limited rights of appeal.

Arbitration is not necessarily worse than litigation for a homeowner — it can be faster and less expensive — but it significantly limits your options if the outcome is unfavorable. Read your contract’s dispute resolution section before closing. If it contains a mandatory arbitration clause, understand what it covers and which arbitration organization administers the process.

Some consumer advocates argue that mandatory arbitration in home purchase contracts unfairly benefits builders because repeat-player builders appear before the same arbitration providers regularly while buyers appear only once. That structural dynamic is worth understanding as context.

The Australian equivalent

In Australia, the statutory warranty system operates through state legislation rather than individual builder warranty contracts. Coverage periods range from 6 to 10 years for major structural defects depending on the state — 6 years in New South Wales under the Home Building Act 1989, 10 years in Queensland and Victoria for structural defects. Builders are required to hold home warranty insurance that protects owners if the builder becomes insolvent. The Home Building Act or equivalent legislation in each state defines what constitutes a major defect and the process for making claims through fair trading bodies and civil tribunals. Unlike the US system, Australian statutory warranties cannot be contracted away by the builder.

Key takeaways

• There is no federal law requiring a builder warranty in the US — your coverage comes from your state’s law, your purchase contract, and any third-party warranty program your builder uses
• The standard 1-2-10 structure provides one year of workmanship coverage, two years for major systems, and ten years for structural defects — but terms vary by builder and state
• Third-party providers like 2-10 HBW and RWC back many builder warranties and may provide coverage even if your builder goes out of business
• Common exclusions include normal wear and tear, homeowner-caused damage, cosmetic variation within NAHB tolerances, and appliance failures
• Always submit warranty claims in writing, document defects thoroughly with dated photos, and give the builder the right to inspect and cure before hiring your own contractors
• Most new construction contracts contain mandatory arbitration clauses — understand your dispute resolution path before closing, not after a defect appears