A different inspection, because the deliverable is a claim
An ordinary home inspection describes a house for somebody deciding whether to buy it. This one produces a schedule of defects, dated and photographed, written to be submitted to a builder before a contractual deadline. Same inspector, entirely different product — because the audience is a warranty administrator and the test is not “should I buy this” but “is this a covered defect, and can I prove it in time.”
The reason to do it at month eleven is arithmetic. In the states that codify a new-home warranty, the first year is the broadest coverage the house will ever have, and almost all of it drops away on the anniversary. What remains is narrower, harder to prove, and in most states eventually gone.
What 1-2-10 actually is, as codified
The shorthand describes three nested coverage periods, and two states codify it cleanly enough to quote.
Minnesota, at Minn. Stat. 327A.02, subd. 1: for one year from the warranty date “the dwelling shall be free from defects caused by faulty workmanship and defective materials due to noncompliance with building standards”; for two years, free from “defects caused by faulty installation of plumbing, electrical, heating, and cooling systems”; for ten years, free from “major construction defects due to noncompliance with building standards.”
New Jersey, under N.J.S.A. 46:3B-1 et seq. as posted by the state's Department of Community Affairs, uses the same three tiers and defines the third: a major construction defect is “any actual damage to the load bearing portion of the home including damage due to subsidence, expansion or lateral movement of the soil (excluding movement caused by flood or earthquake) which affects its load bearing function.” It also caps builder liability at the purchase price in the first good faith sale.
Two things in those quotations are routinely dropped from summaries. Minnesota's recurring qualifier, “due to noncompliance with building standards,” narrows all three warranties considerably: a defect is not covered merely because it is a defect. And a “major construction defect” is damage to the load-bearing structure. A ten-year warranty is not ten years of coverage on the house.
And 1-2-10 is a convention, not a national rule. Louisiana's New Home Warranty Act codifies one, two and five years. The Terner Center for Housing Innovation at UC Berkeley, in its July 2024 report on construction defect liability in California, records the same variation: ten years for California for-sale housing against four for rental, a non-extendable six-year period in Utah, ten-year periods in New Jersey and Hawaii. Check your own state before relying on any of it.
Where the structure came from, and the FHA rule that no longer exists
The three-tier shape is federal in origin. HUD Handbook 4145.1 REV-2, Chapter 6, describing the insured ten-year protection plan, set a first-year warranty against “construction deficiencies in workmanship and materials,” a two-year warranty on the wiring, piping and ductwork of the mechanical systems, and ten-year structural coverage. It also carried a fourth tier the industry shorthand forgets entirely: a four-year warranty on basement slabs in designated areas.
That handbook also supplies the definition that explains why ten-year structural coverage disappoints people: a structural defect was “actual physical damage to the designated load-bearing portions of a home caused by failure ... that affects their load-bearing functions to the extent that the home becomes unsafe, unsanitary, or otherwise unlivable.” Not defective. Unlivable.
One widely repeated claim should be retired: FHA does not require a ten-year warranty on new construction. HUD's final rule eliminated the requirement that borrowers obtain either preapproval status or a ten-year protection plan, effective March 2019, as documented in HUD's own journal Cityscape (volume 23, number 1, 2021). What survives is the Warranty of Completion of Construction, form HUD-92544.
Why eleven and not twelve — and what no source says
Start with the honest part. A search of government, academic, code-body and standards-organization documents found no institutional source that establishes the eleven-month inspection as a practice, names its origin, or explains the choice of eleven. Every result was inspection-company marketing or a builder's own checklist. This page does not invent a history for it, and you should be skeptical of pages that offer one.
What is documented is the deadline mechanics, and they are tighter than most homeowners expect.
New Jersey's New Home Warranty Program homeowner booklet, revised September 2025, allows a homeowner seven calendar days after the warranty expires to notify the builder of a defect. It also gives the builder 30 days to inspect or repair after written notice, and sets 14 days after that repair period to file a Notice of Claim with the program. That is a sequence, and a sequence needs runway.
Minnesota's legislative staff summary of chapter 327A describes six months to notify the vendor in writing after discovering a defect, 15 days for the vendor to make a written repair offer, and two years from discovery to file suit. Louisiana requires written notice by registered or certified mail within one year of knowledge of the defect, then applies a peremptive period of thirty days after the warranty expires — a civil-law concept that, unlike a limitations period, cannot be interrupted or tolled.
South Carolina supplies the closest thing to an institutional twelve-month outer limit: its 2022 Residential Construction Standards provide that the state licensing department “shall inspect for Performance Standards violations identified by the homeowner within twelve (12) months after substantial completion.” That is a state agency's complaint jurisdiction rather than a builder warranty, and it does not mention eleven months — but it is the clearest documented statement that the workmanship window closes at twelve.
Put together: you need time to find defects, time to put them in writing, and time for the builder to respond before a period closes. A month of runway is a reasonable answer to that — not a magic number, and if your warranty paperwork sets different deadlines, the paperwork wins.
What drops off, and when
New Jersey's consumer booklet states the attrition plainly. In the first year, coverage includes performance-standard defects, appliance, fixture and equipment defects, mechanical and electrical system defects, and major structural defects. In the second year it is mechanical and electrical systems — including on-site sewage disposal — plus major structural defects. From years three through ten, “only major structural defects are covered.”
That is the argument for this inspection. Nearly everything a homeowner would list — workmanship, finishes, fixtures, the things that are wrong rather than broken — is covered in year one and in no year after it. The warranty does not shrink gradually; it falls off a step.
What a warranty claim has to look like to succeed
A claim is a document, and most rejected claims fail as documents rather than on the merits.
It is in writing, and dated. Every statutory scheme above runs on written notice within a stated period; a conversation with a superintendent is not notice. Louisiana specifies registered or certified mail, and where a method is specified, use it.
It identifies a defect, not a complaint. “The floor feels uneven” is a complaint. A measurement against a published standard is a defect. South Carolina's state-adopted Residential Construction Standards are the clearest free example of what measurable looks like: floors “shall not be more than ¼″ out of plane or level in wood, vinyl and ceramic areas or ½″ out of plane in carpeted areas within any 32″ measurement”; drywall cracks “not exceeding 1/16 inch in width” are considered acceptable; garage slab cracks “in excess of 5/16″ in width or 5/16″ in vertical displacement shall be repaired”; mortar joint cracks greater than 1/8″ are excessive. Those tolerances bind only in South Carolina. Your builder's warranty almost certainly incorporates a performance standard of its own, and the most useful thing you can do before the inspection is read it and give the inspector a copy.
It is photographed, with location and date — the condition, where in the house it is, and a measurement in frame where a tolerance applies.
It separates covered from uncovered. Warranties exclude normal wear, owner maintenance failures, and usually anything the owner altered. Padding a list with items that are plainly yours weakens the items that are not.
One limit: your inspector cannot tell you whether an item is covered, because standards of practice exclude offering warranties and coverage is a reading of your contract — a separate subject handled by a sibling reference. The inspector's job is to describe the condition well enough that somebody else can answer it.
The longer backstop: limitation and repose
Behind the warranty sit two clocks, and homeowners conflate them. A statute of limitations starts when a claim accrues — often when the defect is or should have been discovered — and gives you a period to sue. A statute of repose starts at substantial completion regardless of discovery and extinguishes the claim at the end of it. Repose is the harder wall: a defect discovered after it has run is generally not actionable at all.
Texas pairs a two-year limitation with a ten-year repose under Tex. Civ. Prac. & Rem. Code §16.009, and Minnesota does the same under Minn. Stat. §541.051; New Jersey's repose statute is N.J.S.A. 2A:14-1.1; Virginia's repose period is five years and Colorado's six.
Two warnings about those figures. The multi-state chart that circulates on this subject — the Community Associations Institute's table of construction defect limitation and repose statutes — carries no publication date on its face, and repose provisions are among the most frequently amended in state law; Florida's in particular has been the subject of recent legislative change. Treat any such chart as an index pointing to statute citations and read the statute itself.
The warranty is a repair mechanism with short deadlines; the statutes are a litigation mechanism with long ones. Missing the first does not necessarily end the second, but the second is slow, expensive, and often already running out before anyone notices the defect.
What to do, and in what order
Find your warranty date first, and do not assume it is your closing or move-in date. Statutory warranties run from a defined warranty date, and your builder's express warranty may define it differently again. Everything here is scheduled off that one number.
Read the warranty document and its performance standard before the inspection, and give the inspector a copy.
Schedule with enough runway for the sequence: you have to receive the report, write the notice, and allow the builder its response period, all before the period closes. Pull out your pre-closing inspection file and any phase inspection reports — items the builder promised and did not complete belong on this list, and dated photographs of open walls are evidence you cannot recreate.
Submit in writing, by the method your warranty specifies, and keep proof of delivery. Then calendar the two-year systems deadline, because that tier is the next to close.
One case where this is the wrong spend: if the anniversary has already passed, this is not a warranty inspection. Only the structural tier is likely still open, and it requires damage to the load-bearing structure. What you want then is an ordinary condition inspection, read as maintenance rather than as a claim. Reading how an inspection report is written first will help you translate observed conditions into claim language.
Frequently Asked Questions
What is an 11-month warranty inspection?
It is an inspection of a house you already own, commissioned shortly before the first year of the builder's warranty expires, whose purpose is to produce a dated and photographed list of defects to submit as a warranty claim. It is a different product from a buyer's home inspection: the audience is a builder or warranty administrator, and the measure is whether an item is a covered defect that can be proved before a deadline.
Why eleven months and not twelve?
No institutional source establishes the origin of the eleven-month convention, and this page will not invent one — a search of government, academic and standards-body documents turned up only inspection-company and builder marketing material. What is documented is the deadline logic. You need time to find defects, put them in writing, and let the builder respond before the one-year period closes. New Jersey's program allows only seven calendar days after expiration to notify the builder, and South Carolina's state standards limit its performance-standard complaint inspections to twelve months after substantial completion.
What does a 1-2-10 builder warranty actually cover?
In the states that codify it: one year against defects from faulty workmanship and defective materials, two years against defects from faulty installation of the plumbing, electrical, heating and cooling systems, and ten years against major construction defects. Minnesota adds the qualifier “due to noncompliance with building standards” to all three, which narrows them. “Major construction defect” means damage to the load-bearing structure — HUD's historical definition required the home to become “unsafe, unsanitary, or otherwise unlivable.” It is not ten years of coverage on the house.
Is 1-2-10 the law everywhere?
No. It is a convention with statutory versions in some states and nothing at all in others. Louisiana's New Home Warranty Act codifies one, two and five years, not ten. Utah's period is six years and non-extendable. The structure traces to HUD Handbook 4145.1, which also included a four-year basement slab tier the industry shorthand drops. Read your own state's statute and your own builder's warranty document rather than the shorthand.
Does FHA require a 10-year warranty on a new house?
Not since March 2019. HUD's final rule eliminated the requirement that borrowers on high-loan-to-value FHA-insured mortgages for new construction obtain either preapproval status or a HUD-accepted insured ten-year protection plan; the change is documented in HUD's own Cityscape journal. What remains required is the Warranty of Completion of Construction, form HUD-92544. A large volume of still-live web content says otherwise and is out of date.
What happens if I miss the one-year deadline?
You lose the broadest tier of coverage. After the first year, the systems tier and the structural tier are typically all that remain, and from year three onward many programs cover only major structural defects. Separately, statutes of limitation and repose may still allow a court action — Texas and Minnesota each pair a two-year limitation with a ten-year repose, and New Jersey has a ten-year repose statute — but that is litigation rather than a repair request, and repose periods run from substantial completion whether or not you knew of the defect.
Can the inspector tell me whether an item is covered by my warranty?
No, and the standards of practice exclude offering warranties or guarantees of any kind. Coverage is a reading of your warranty document against your state's statute. The inspector's job is to observe, measure and describe the condition precisely enough that the coverage question can be answered by whoever decides it. Give the inspector a copy of your warranty's performance standard beforehand so the report is written in terms the claim will be judged on.