New Construction Home Warranty: What Builders Must Cover

Most buyers of a brand new house sign a thick closing packet and never read the one document that matters most when a floor starts squeaking or a drywall seam cracks. A new construction home warranty is the builder’s written promise to repair certain defects for a set period after closing, and the clock starts the day you get the keys. Miss a deadline or file a vague claim, and a repair the builder would have paid for becomes your bill.

The short answer: nearly every builder warranty follows the same three-tier pattern. Workmanship and materials are covered for about one year, the major mechanical systems (plumbing, electrical, heating and cooling distribution) for about two years, and major structural defects for up to ten years. The details inside each tier, and the exclusions, are where homeowners win or lose.

What follows explains how each tier usually works, what almost never makes the cut, how to document and file claims so they get approved, and when to bring in an independent inspector or structural engineer.

How a New Construction Home Warranty Is Structured

A new construction home warranty is not the same thing as a third-party home warranty plan you buy to cover a broken dishwasher. It is a limited, written warranty from the builder (sometimes administered or insured by an outside warranty company) that covers defects in how the house was built. Some states also impose implied or statutory warranties on new homes, so your protection can be broader than the paper you signed. Read your own document, because the tiers that follow describe the common pattern, not a legal guarantee.

Year one: workmanship and materials

The first-year tier is the broadest. It typically covers items that fall short of written performance standards: drywall cracks and nail pops past a certain width, flooring that buckles or separates, grout and caulk failures, doors and windows that stick or leak, cabinet doors out of alignment, paint defects, and roof leaks. Most documents spell out tolerances, such as how wide a slab crack must be or how far a floor can be out of level over a set distance before the builder must act.

Year two: mechanical systems

The second tier usually covers the distribution parts of plumbing, electrical and HVAC systems: supply and drain lines, wiring, panels, ductwork and gas lines. It rarely covers the appliances or equipment themselves, like the water heater, furnace or air handler. Those carry their own manufacturer warranties, which you often have to register within a short window after closing.

Up to year ten: major structural defects

The long tier covers actual damage to load-bearing elements (foundation, footings, beams, girders, load-bearing walls, roof framing) that affects the home’s ability to carry loads or makes it unsafe to live in. The bar here is high. Hairline cracks, minor settling and cosmetic issues typically do not qualify. A structural claim usually requires evidence of real movement or failure, often confirmed by an engineer.

What Builder Warranties Usually Exclude

Exclusions trip people up more than anything else. Nearly every new build home warranty leaves out:

• Normal wear and homeowner damage. Scratched floors, dented doors and stained carpet from use are yours.
• Appliances and equipment. Covered by the maker, not the builder, once installed correctly.
• Landscaping, grading changes and drainage you altered. Adding a flower bed that sends water toward the foundation can void related coverage.
• Minor concrete cracking and shrinkage. Concrete cracks as it cures. Most warranties only act past a stated width or height difference.
• Consequential damage. Ruined furniture from a leak, mold remediation or hotel stays may be limited or excluded.
• Anything you modified. Finishing a basement, moving a wall or changing plumbing can end coverage for that area.
• Failure to maintain. Skipping HVAC filter changes, gutter cleaning or recaulking tubs can give the builder grounds to deny.

Many builder warranties also include a binding arbitration clause and a waiver of certain implied warranties. You cannot usually change those terms after signing, but you should know they exist before a dispute starts.

The Items Worth Watching in the First Year

Houses settle. Lumber dries and shrinks during the first heating and cooling seasons, which is why so many problems show up between months three and eleven. Flooring deserves extra attention because it reacts to both moisture and movement:

• Hardwood that cups or gaps more than normal seasonal movement
• Luxury vinyl plank that peaks at the joints or separates at the ends
• Tile that sounds hollow, cracks along a line, or has grout that crumbles
• Carpet seams that open or ripple soon after move-in
• Squeaks and soft spots in subfloors, especially near stairs and bathrooms

Also walk the exterior every few months. Look for gaps where siding meets trim, water pooling near the foundation, and downspouts that dump next to the slab. Inside, check for doors that suddenly rub, new diagonal cracks at window corners, and drywall screws popping through paint.

How to File a Warranty Claim That Gets Approved

Builders process claims every day, and the ones that move fastest are specific, documented and on time. Use this process:

1. Read the warranty booklet within your first week. Note every deadline, the claim method (portal, email or written letter) and whether emergency issues have a separate phone line.
2. Photograph and measure. Put a tape measure or coin next to cracks, date your photos, and shoot wide and close-up. For uneven floors, lay a 6 ft level and photograph the gap.
3. Write one line per defect. “Primary bedroom, north wall, drywall crack 18 inches from window corner, first noticed March.” Vague claims like “cracks everywhere” get pushed back.
4. Submit in writing. Even if you call, follow up by email or the portal so there is a timestamp.
5. Use the 11-month walkthrough. Many builders schedule one. If yours does not, submit a full list before the one-year mark so nothing ages out.
6. Track every response. Keep a simple log of dates, names and promised repair windows.
7. Inspect the repair. Do not sign off until the work is complete and the finish matches.

Emergencies such as an active leak, a loss of heat in freezing weather or an electrical hazard should be reported immediately by phone, then documented in writing. Shut off water or the breaker as needed to prevent damage, and never try to repair wiring yourself while waiting.

Structural Claims and When to Hire an Engineer

Structural issues get the most scrutiny because they cost the most. Warning signs include diagonal cracks wider than about 1/4 inch in drywall or foundation walls, stair-step cracks in block, doors and windows that suddenly bind across several rooms, floors sloping noticeably toward one wall, and gaps opening where walls meet ceilings.

If you see these, bring in an independent licensed structural engineer rather than relying only on the builder’s representative. An engineer’s report documents cause and severity in language warranty administrators respect. Fees for a residential evaluation commonly run a few hundred dollars up to roughly a thousand or more depending on scope and region, which is small compared with the repairs involved. Any actual foundation or framing repair should be done by a licensed contractor to the engineer’s specifications, with permits pulled where your jurisdiction requires them.

Do not patch or cover structural cracks before the builder and your engineer have seen them. Filling a crack can erase the evidence you need. Also avoid regrading around the foundation or adding heavy loads until the cause is known.

Independent Inspections and Other Ways to Protect Yourself

A third-party inspection before closing and again before the one-year mark is one of the best investments a new-build buyer can make. Builder quality control focuses on getting through municipal inspections, which check minimum code items at certain stages. An independent inspector looks at finish quality, attic insulation, roof flashing, grading, and the dozens of small misses that turn into claims later. Expect a few hundred dollars per visit, varying by home size and market.

Other habits help too:

• Register every appliance and equipment warranty right away.
• Keep the builder’s maintenance schedule and a record showing you followed it.
• Ask whether the structural tier transfers to a future buyer, since that can help at resale.
• Store the warranty booklet, closing papers and claim log together, both paper and digital.

What It Costs When Coverage Runs Out

Once a tier expires, repairs come out of pocket or through your homeowners insurance when damage is sudden and accidental. Typical out-of-warranty ranges vary widely by region: drywall crack repair and repainting might run from a couple hundred dollars to about a thousand, subfloor squeak fixes from a few hundred dollars up, and foundation work from a few thousand dollars to well into five figures depending on the method and severity. These are broad ranges only; get written quotes from licensed contractors after an engineer defines the scope.

That spread is exactly why the first year matters. Almost every cosmetic and workmanship defect is cheapest to fix while the builder still owns it.

When to Call a Licensed Professional

Call a licensed structural engineer for any crack, slope or movement that suggests foundation or framing trouble, and hire a licensed general or foundation contractor for the actual repair. Structural work usually needs permits and must follow the engineer’s design, including proper anchoring of framing to footings and attention to local wind and snow loads. If any repair involves digging near the house, call 811 first so buried utilities are marked. Leave electrical, plumbing, gas and HVAC work to licensed trades, and if you smell gas, leave the house and call the utility from outside.