New Construction Home Inspection Checklist (2026 Buyer Guide)

The most expensive myth in residential real estate is "new construction doesn't need an inspection — it has a builder's warranty." In 2026, the average new-construction home has 22 documented defects at the pre-drywall stage, 14 at the final walkthrough, and 8 that surface in the 11-month warranty inspection. Without a third-party inspector at each of those checkpoints, every single one becomes your problem after the warranty expires.

This guide gives you the three-inspection protocol every new-construction buyer should run in 2026, the specific items each one catches, what builder warranties actually cover (and the loopholes), the negotiation playbook, and the cost-vs-value math. For the broader inspection context see the inspection hub and the home inspection checklist for buyers.

The Three-Inspection Protocol for New Construction

Inspection	When	2026 cost	What it catches
Pre-drywall (framing) inspection	After framing, plumbing rough-in, electrical rough-in, HVAC rough-in — before insulation	$425–$650	Framing errors, plumbing/electrical code violations, missing fire blocking, improper truss modifications, missing flashing
Final / pre-closing inspection	5–10 days before closing	$525–$775	Cosmetic defects, appliance function, HVAC startup, grading, drainage, exterior finish, punch list creation
11-month warranty inspection	Month 11 of the 1-year builder warranty	$425–$625	Settling cracks, paint failures, HVAC issues, drywall nail pops, grading shifts, anything that surfaced in year one
Total 3-inspection investment	—	$1,375–$2,050	Catches an average of $11,000–$28,000 in defects covered by warranty if reported in time

The 11-month inspection is the one buyers skip most often and regret most often. The standard builder warranty is 12 months on workmanship — anything not reported by month 12 becomes your maintenance, not their warranty.

Pre-Drywall Inspection: The Highest-Leverage Hour in New Construction

Once drywall goes up, the framing, wiring, plumbing, and HVAC are sealed forever. Buyers who skip this inspection lose visibility into 70% of the home's bones. The pre-drywall checklist:

• Framing: Truss spacing, header sizing over openings, missing hurricane ties (where required), notched/drilled studs over allowable limits, missing fire blocks at floor penetrations
• Plumbing: Slope on drain lines (1/4" per foot), proper venting, dielectric unions where required, no backwards check valves, supply lines secured every 4 feet
• Electrical: Proper box fill, AFCI/GFCI placement, neutral and ground separation, correct conductor sizing, panel labeling, smoke/CO detector wiring
• HVAC rough-in: Duct sealing (mastic, not just tape), supply/return placement, duct sizing matches Manual D, condensate drainage paths
• Insulation prep: Air sealing at top plates, electrical penetrations, plumbing penetrations, recessed light cans rated IC-AT
• Flashing: Window/door head flashing properly lapped, deck ledger flashing, kick-out flashing at roof-wall intersections

For the broader systems context, cross-reference the systems hub.

Final Walkthrough Inspection: What Builders Hope You Miss

• Grading & drainage: 6" of fall in the first 10 feet from the foundation. Backfill that hasn't fully settled. Downspouts terminating against the foundation.
• Driveway & flatwork: Cracks that propagated since pour, improper expansion joints, drainage onto vs. away from the home.
• HVAC startup: System should hit setpoint, both heating and cooling. Static pressure within range. No whistling at supply registers. Condensate pump operational.
• Plumbing function: Every fixture, every shut-off valve. Toilet flush rate. Shower temperature stability across simultaneous fixture use.
• Electrical: Every outlet GFCI-tested. Every switch operational. Panel label complete. AFCI breakers test correctly.
• Doors & windows: Every window opens, locks, screens fit. Every interior door swings without binding. Weatherstripping intact.
• Appliances: Every appliance powered, started, and basic function tested. Warranty documents collected.
• Cosmetic punch list: Drywall finish, paint coverage, trim alignment, caulk lines, scratched flooring, damaged screens

For the broader pre-closing playbook see the what to fix first after inspection guide.

The 11-Month Warranty Inspection: The One Most Buyers Skip

By month 11, the home has been through one full heating season and one cooling season. Settling has occurred. Paint has cured. The HVAC has run thousands of hours. Real defects emerge that weren't visible at closing. The 11-month inspection captures:

• Drywall nail pops, settling cracks (especially at corners and over doorways)
• Foundation settling cracks (hairline OK, 1/8"+ flagged)
• Grading shifts and new low spots
• HVAC performance issues — uneven temperatures, high humidity, refrigerant losses
• Roof issues that surfaced through the first storm season
• Window seal failures (look for fogging between panes)
• Plumbing leaks under sinks, around toilets, at hose bibs
• Exterior caulk failures, paint peeling on south/west exposures
• Concrete cracks and spalling on driveway, walkway, patio

Submit the inspection report to the builder before month 12. Anything documented in writing within the warranty window must be addressed under the workmanship warranty. Anything found after = your problem.

What Builder Warranties Actually Cover (and Don't)

• Year 1 — Workmanship & materials: Cosmetic defects, paint, drywall, trim, appliances, mechanical systems
• Year 2 — Mechanical systems: HVAC, plumbing, electrical (operational, not cosmetic). Some builders extend; many don't.
• Years 3–10 — Structural only: Foundation, load-bearing framing, roof structure. Cosmetic settling cracks not covered.
• Common loopholes: "Owner maintenance" exclusions (HVAC filters, gutter cleaning, caulk maintenance). Manufacturer warranties pass through to you — file with the manufacturer, not the builder. Damage from "act of god" or "buyer modification" voids coverage.

Is This Actually Worth It? The ROI Math

• Pre-drywall inspection ($550): Catches average $4,200 in code/framing issues that builder must fix on their dime
• Final inspection ($650): Builds a punch list that the builder addresses pre-closing — average value $3,800
• 11-month inspection ($525): Captures settling, performance, and cosmetic defects covered by warranty — average value $5,400
• Total spend: $1,725. Total recovered value: ~$13,400. ROI: ~775%

For 2026 home cost benchmarks beyond construction, see the cost guides hub and the Annual Cost Report.

Should You Inspect Now or Wait?

Use this five-question filter:

• Are you under contract on a new build? (Always yes — schedule pre-drywall before insulation goes up.)
• Has the home passed final municipal inspection? (Municipal inspections check code compliance, not workmanship — you still need a third-party.)
• Did the builder offer to "include an inspection"? (Builder-paid inspectors have an obvious conflict — pay for your own.)
• Are you within 60 days of your 1-year warranty expiration? (Schedule the 11-month inspection now — don't wait for month 12.)
• Do you have any unresolved punch list items from closing? (Document them now in writing with the inspector's report.)

How Inspections Impact Your Home Value

Documented inspection records (pre-drywall + final + 11-month) become a permanent part of the home's documentation. When you eventually sell, providing these records to your buyer's agent can support a 1–2% premium on list price by demonstrating documented quality. On a $525K home, that's a $5,000–$10,500 long-term return on a $1,725 inspection investment — and that's separate from the $13,400 in defects caught during the warranty period.

The Negotiation Move at the Final Walkthrough

Don't close until every punch-list item is either complete or has a written, dated commitment from the builder. Items left "to be completed after closing" historically have a 40% completion rate within 90 days and a 20% completion rate ever. Either delay closing or place 1.5x the cost-to-complete in escrow until the work is verified.

For the broader negotiation framework see the what fails a home inspection guide and run quotes through the Inspection Report Analyzer.

Should You Replace or Wait on Builder-Grade Items?

Many new-construction homes ship with builder-grade water heaters, HVAC equipment, and appliances that have 8–12 year lifespans rather than the 15–20 year lifespans of mid-grade equipment. Decision rule: if you plan to stay in the home 10+ years, budget upgrades to mid-grade equipment in years 5–7 (before failure). If you plan to sell within 5 years, run the equipment to end-of-life — buyers don't pay a premium for slightly better builder-grade.

For replacement timing on each system, see the systems hub and the maintenance hub.

The Bottom Line

New construction is not a free pass on inspections — it's an opportunity to catch defects while the warranty is live and the builder is contractually obligated to fix them. The three-inspection protocol costs $1,725 and recovers ~$13,400 in defects on average. Skip it and you're paying for the same fixes out of pocket starting in year two. The pre-drywall inspection in particular is non-negotiable: once the drywall goes up, you're inspecting blind for the next 30 years.