Developer-to-Homeowner Transition: 4 Things to Demand Now

TL;DR: Before you sign off on a new-build home, demand the as-built electrical and plumbing plans, a written punch list with fix dates, proof the panel and outlets were inspected (not just installed), and a copy of the builder's warranty terms in writing. Most structural warranties last 10 years, but the labor warranty on fixtures and finishes usually expires in 1 year, and once you've closed, undocumented defects become your problem, not the builder's.

_Last reviewed: July 2026 · 7 min read_

You're handed a stack of paperwork, a set of keys, and a smile, and then the builder's crew is gone. If you don't demand specific documents and inspections before that handoff, you inherit every hidden defect with none of the leverage to get it fixed for free.

Okoniq Property Hub helps new homeowners log warranty start dates, punch list items, and system inspection records in one place, so nothing slips past the deadline that matters.

What documents should you demand before closing?

Demand the as-built plans, the manufacturer warranties for every installed system, and a signed punch list before you hand over final payment. As-built plans show exactly where wiring, plumbing lines, and load-bearing points actually ended up, which often differs from the original blueprint by the time framers and electricians finish their work.

Ask specifically for the electrical panel schedule and amperage rating. A home wired for 100 amp service instead of 200 amp will feel fine on day one and then trip breakers the moment you add central air, an EV charger, or a hot tub. That's a $3,000 to $4,000 upgrade you don't want to discover in year two. Get the panel rating in writing at closing, not verbally from the site super.

Also request the manufacturer warranty cards for the water heater, HVAC unit, and any appliances included in the sale. Builders sometimes register these under their own company name rather than yours, which can void your claim later if the paperwork was never transferred.

What should be on your final walkthrough punch list?

Every visible defect, no matter how small, needs to be on a signed, dated punch list before you close. This includes paint touch-ups, uneven caulk lines, doors that stick, and outlets that don't hold a plug snugly. Builders are far more responsive to a documented list with a promised completion date than to a phone call three weeks after you've moved in.

Test every outlet with a cheap $8 outlet tester and confirm none of them are still 2-prong ungrounded, especially if any trim work was subcontracted out. If you find 2-prong outlets that need upgrading in a supposedly new build, that's a code violation the builder needs to correct before you sign, not something you pay for later.

Walk the exterior too. Check the grading around the foundation, the gutter attachment points, and whether downspouts actually direct water away from the slab. A foundation check done during the first spring after move-in catches settling issues while they're still covered.

How do you verify the home's systems actually work as promised?

You verify systems by testing them under real load, not by trusting a checklist the builder hands you. Run the HVAC on both heat and cool cycles for at least 20 minutes each and confirm the temperature actually shifts by the expected amount. Flush every toilet, run every faucet at full pressure simultaneously, and check the water heater recovery time by running two showers back to back.

| Verification Method | What It Catches | |---|---| | Load-test electrical panel | Undersized service, mislabeled breakers | | Run HVAC full cycle | Undersized unit, duct leaks | | Simultaneous plumbing test | Low pressure, drainage slope errors | | Walk attic and crawlspace | Missing insulation, exposed wiring |

Ask to see the crawlspace or attic before drywall is fully closed if you're buying pre-construction, or request photos from the builder if you're buying post-completion. This is also when to check for outdated wiring methods on any renovated-and-flipped "new" builds. If the home was gut-renovated rather than built from scratch, confirm there's no leftover knob-and-tube wiring hiding behind new drywall, since insurers increasingly flag it during underwriting.

What warranty periods should you track after move-in?

Most builder warranties break into three tiers: 1 year on labor and workmanship, 2 years on mechanical systems like plumbing and HVAC, and 10 years on major structural components. Miss the 1-year window and you lose leverage on things like squeaky floors, drywall cracks, or a misaligned door, even though those are the easiest issues to catch early.

Set a calendar reminder at the 11-month mark to do a full walkthrough again and submit any new defects in writing before the 1-year warranty closes. Builders are legally required to respond to documented claims inside that window in most states, but informal complaints after the deadline often get ignored entirely.

Keep every warranty document, inspection report, and punch list in one folder from day one. Digital records with photo timestamps hold up far better than memory if you ever need to escalate a dispute to arbitration, which is how most builder contracts require these claims to be resolved.

FAQ

How long does a builder's warranty typically last on a new home?

Labor and workmanship coverage usually runs 1 year, mechanical systems like HVAC and plumbing run 2 years, and major structural defects are typically covered for 10 years under most state new-home warranty laws.

Can I withhold final payment until punch list items are fixed?

In many states, yes, if the items are documented in the purchase agreement or a signed punch list, but the exact leverage depends on your contract language and local real estate law, so confirm with your closing attorney before withholding funds.

What's the single biggest mistake new homeowners make during handoff?

Not testing systems under real load. Fixtures that look fine during a quiet walkthrough often reveal undersized wiring, weak water pressure, or an undersized HVAC unit within the first few weeks of actual use.

Should I hire an independent inspector even for a brand-new home?

Yes. A third-party inspector costs $300 to $600 and routinely finds issues builders' own crews miss, including panel amperage mismatches, drainage slope errors, and missing insulation.

What if the builder refuses to fix documented punch list items?

Escalate in writing first, then check your purchase contract's arbitration clause, since most new-construction agreements require disputes to go through arbitration before any lawsuit can proceed.

This is educational information, not legal advice. Consult a real estate attorney familiar with new-construction contracts in your state before withholding payment or filing a warranty dispute.