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A 1-2-10 warranty is a builder warranty with three tiers: the shortest tier, usually the first year, covers workmanship and materials; the middle tier, usually two years, covers the delivery systems (plumbing lines, wiring, ductwork); and the longest tier, usually ten years, covers major structural defects only. Coverage narrows as it lengthens, so the ten-year tier covers far less than the one-year tier. The name is a convention; your warranty document sets the actual periods, definitions, tolerances, and exclusions, and it governs.
This post describes what each tier commonly includes and excludes. The warranty timeline turns the tiers into a calendar of what to inspect before each one closes; this is the shorter answer to what the numbers mean.
What does the one-year workmanship tier cover?
The workmanship and materials tier commonly covers defects in how the house was built or finished, judged against the document's own standards: doors and windows that do not operate, drywall and paint defects beyond tolerance, flooring and tile defects, cabinet and trim problems, plumbing fixtures that leak, roofing installed wrong, and similar items. It is the widest coverage and the shortest, which is why the end of the first year is the most important inspection of the whole warranty.
Most documents judge these items against a table of performance standards with a stated tolerance and a stated remedy. A drywall crack under a certain width, a floor out of level within a certain amount, and a door that rubs slightly may not count as defects until they pass the stated line. Many builders repair settling items such as nail pops and hairline cracks once, near the end of this tier, in a single visit. The 11-month inspection is the list to run before the tier closes.
- ClosingAll three tiers usually start on the same effective date, often the closing date. Write it on the document.
- First yearWorkmanship and materials. The widest coverage. Inspect a month before it ends and send every item in writing.
- Second yearSystems: the pipes, wires, and ducts. Equipment is under manufacturer warranty on its own clock.
- Years three to tenStructural only, for load-bearing defects as the document defines them. Keep water away from the foundation and keep dated photos.
What does the two-year systems tier cover?
The systems tier commonly covers the delivery systems the builder's subcontractors installed: the plumbing supply and drain lines, the electrical wiring and its connections, and the heating and cooling ductwork. It usually does not cover the equipment at the ends of those lines. The furnace, the air conditioner, the water heater, and the appliances carry manufacturer warranties, and most builder documents exclude them for that reason.
In practice, systems claims look like a drain that stays slow after snaking, a breaker that trips with no clear cause, an outlet or a circuit that dies, a room that never gets air, water hammer, or a leak inside a wall. Report each one in writing as soon as it appears, with the date and a description of when it happens, because the tier closes on the calendar and not when you got around to it. The equipment warranties, meanwhile, run on their own start dates and often expect documented maintenance, and the difference between a builder warranty and a home warranty explains why those are separate calls.
What does the ten-year structural tier cover?
The structural tier is long and narrow. It commonly covers only a structural defect as the document defines one: actual physical damage to a designated load-bearing element (footings, foundation walls, beams, columns, load-bearing framing, the roof structure) that makes the home unsafe, unsanitary, or otherwise unlivable. Cosmetic cracking, settling within tolerance, and damage to non-load-bearing parts are commonly outside it, however alarming they look.
The definition of "structural defect" in your document decides this tier. Two houses with identical cracks can have different outcomes because their documents define load-bearing elements and "unlivable" differently. Read the definition before you decide whether something is a structural claim, and quote it in the claim.
Structural claims are often reviewed by an engineer and administered by a third-party warranty company named in the document, with its own address and procedure for claims. Your job across the ten years is to keep water away from the foundation, because drainage the owner controls is a common exclusion, and to keep a dated photo record of the foundation and exterior from the same spots each year. The grading and drainage guide is the maintenance side of that job.
What does a 1-2-10 warranty usually exclude?
Exclusions are where most declined claims come from, and the common list is long: normal wear and tear; damage from the owner's failure to maintain; appliances and equipment covered by manufacturer warranties; cosmetic items not noted on the punch list at the walkthrough; landscaping and sod after a short period; damage from weather events, soil movement, or water the owner allowed to collect against the foundation; changes made by anyone other than the builder; and consequential damage, meaning the damage a defect causes to something else.
| Tier | Commonly covers | Commonly excludes |
|---|---|---|
| Workmanship and materials | Doors, windows, drywall, paint, trim, flooring, tile, cabinets, plumbing fixtures, roofing installation, judged against stated tolerances | Cosmetic items missed at the walkthrough, normal wear, movement within tolerance, owner damage, appliances |
| Systems | Plumbing supply and drain lines, electrical wiring, ductwork | The equipment itself: HVAC units, water heater, appliances, which carry manufacturer warranties |
| Structural | Load-bearing elements when a defect makes the home unsafe or unlivable, as the document defines | Cracks and settling within tolerance, non-load-bearing parts, damage from drainage or soil conditions the owner controls, consequential damage |
Two exclusions do work in every tier. "Failure to maintain" makes your maintenance log part of the warranty file, because a builder can decline a roof or water heater claim if the expected maintenance was not done. And "consequential damage" means the ruined floor under the leaking pipe may not be the builder's to fix even when the pipe is; that is where prompt reporting and your homeowners insurance come in.
Who administers it, and how do you claim?
The document names who administers each tier and how a claim must be made: often the builder directly for the first two tiers and a third-party warranty company for the structural tier, with a required written form, a stated address or portal, and a stated response time. Follow that procedure exactly. A claim mentioned to the superintendent in the driveway is a conversation; a claim sent the way the document says, before the tier closes, is a claim.
Put the three end dates where you will see them before they pass. In Property Station, the builder connection carries the warranty start and end, each system under Systems & Features takes its own Warranty Start and Warranty End, and the Warranties list gathers them into one list with an Expiring Soon filter and a Claim button on each card. If your builder is on the same platform, the Claim button opens the written request channel the builder sees.
Common questions
Is a 1-2-10 warranty required by law?
Whether any builder warranty is required, and what it must contain, depends on your state. The 1-2-10 shape is a common convention in the market rather than a universal rule, and some builders offer different terms. Read your purchase contract and warranty document, and ask a construction attorney in your state if you need to know what the law requires.
Does the 10-year structural warranty cover foundation cracks?
Usually only when a crack is evidence of a structural defect as the document defines one, which commonly means damage to a load-bearing element that makes the home unsafe or unlivable. Hairline and shrinkage cracks within the document's tolerance are commonly not covered. Photograph every crack with a ruler and a date anyway, because a crack that grows is the evidence a structural claim needs.
Does a 1-2-10 warranty transfer to the next owner?
Many do, especially when a third-party warranty company administers the structural tier, but the document says whether, how, and whether a fee or a form is involved. A transferable warranty with a clean claim record is worth mentioning when you sell. Keep the document and every claim with the house.
Who pays for the 1-2-10 warranty?
The builder provides it as part of the sale, and if a third-party company administers it, the builder enrolled the home and paid the fee. You do not buy it separately. That is one difference from a home warranty, which is a service contract you pay for yourself.
What should you do next?
Open your warranty document and find three things: the effective date, the definition of structural defect, and the claim procedure. Write the three end dates on the first page. Then read how to read the whole document, because the tolerance table inside it is the checklist for the inspection that matters most.
