As-built drawings

Three terms get used interchangeably and they should not be. As-designed drawings are the original architectural and engineering plans submitted for permit — the project as the design team intended it. As-built drawings are those same plans annotated and redlined during construction to reflect every field change: a relocated drain line, a window that moved 6 inches to clear a stud, a structural beam upsized after the framer found rot. Record drawings are the clean, redrafted version produced after construction closes — typically the architect's deliverable to the owner, incorporating the contractor's redlines into a polished CAD or BIM file.

In residential renovation, the lines blur. Most homeowners receive what's labeled "as-built" but is closer to a marked-up PDF of the original permit set. True record drawings — re-drafted from scratch with a registered architect's stamp — cost more and are the standard for commercial or large-scale residential work. For a kitchen remodel, the marked-up PDF is usually the practical artifact you'll use for the next renovation; for an ADU build or whole-house gut, ask explicitly for record drawings.

Responsibility depends on the project shape. On a permitted residential renovation:

• General contractor — keeps the field set marked up daily during the build. The redlines on the contractor's working set become the basis of the as-builts.
• Architect of record — incorporates the contractor's redlines into the final record drawings, stamps them, and delivers to the owner at project closeout. On smaller renovations without an architect, the GC's marked-up set IS the as-built.
• Land surveyor — produces as-built surveys for site, drainage, easement, and setback work. If the project moved exterior walls, added an ADU, or touched the property line, a surveyor's stamped as-built survey is what the city wants in the closeout package.
• MEP engineer or sub — on larger jobs, separate as-builts for plumbing, electrical, and HVAC are produced by the engineer of record or by the licensed sub, then merged into the architectural set.

On unpermitted work — or on a property where you discovered the previous owner never received as-builts — you can commission as-builts retroactively. A surveyor or architect comes out with measuring tools (and increasingly laser scanners or drone photogrammetry) and produces an accurate set from the as-existing condition. See the cost section below.

A complete residential as-built package should contain, at minimum:

• Floor plans with all walls, doors, windows, and openings dimensioned as built (not as designed).
• MEP overlay — actual run paths for water supply, drain lines, electrical home runs, HVAC ductwork, and gas piping. Hidden utility locations are the single most valuable as-built detail for future renovations.
• Structural elements — actual beam sizes, header heights, and any field-replaced framing.
• Finish schedules — what was actually installed (cabinet brand and model, flooring SKU, fixture model numbers).
• Site plan with setbacks, easements, drainage routing, and any below-grade utility shutoffs.
• Permit closeout documents — final inspection signoffs, certificate of occupancy or completion, manufacturer warranties for major equipment.

If your as-built package doesn't have MEP overlay with field-verified utility paths, it is incomplete. The next contractor who has to cut into a wall will need to know what's behind it — and the homeowner is the one who pays for the discovery if it's missing.

The American Institute of Architects publishes the standard form contracts used across most U.S. residential and commercial construction. AIA Document G704 — Certificate of Substantial Completion formally triggers the project closeout phase during which as-built drawings, operations manuals, and warranties are assembled and delivered. The AIA G-series and A-series contracts (A201 General Conditions in particular) define the contractor's obligation to maintain the as-built set during construction and deliver it at closeout.

For homeowners working without an AIA-administered contract — which is most residential remodels under $250,000 — the as-built deliverable should still be specified in the contract by name and tied to final payment. The simple contract clause: "Contractor shall deliver complete as-built drawings, including marked-up field changes and MEP overlay, prior to release of final retention." Without that clause, as-builts become optional, and "optional" usually means "skipped."

Three delivery formats, with very different long-term value:

• Marked-up PDF (cheapest) — the contractor's field set scanned with handwritten redlines. Usable, archivable, but not editable. Fine for a single-trade renovation, weak for future whole-house planning.
• 2D CAD (standard for residential) — clean AutoCAD or equivalent file of the as-built condition. Editable layer-by-layer. The 2026 standard residential deliverable.
• 3D BIM model (premium) — Revit or equivalent parametric model with embedded data: every wall has its assembly, every fixture has its manufacturer and model, every utility run is geo-referenced. Standard for commercial; increasingly common on luxury residential and ADU work. Reality-capture workflows (laser scan, drone photogrammetry) often deliver BIM as the output.

For a typical kitchen or bathroom remodel, the marked-up PDF is adequate. For an ADU, whole-house gut, or any property you may renovate again within 10 years, pay the small premium for 2D CAD or BIM — the file pays for itself the next time you renovate.

As-built deliverable cost depends on whether they are produced during the build or commissioned retroactively, and which format.

Produced during the build (included in architect's or GC's fee): typically $0 incremental cost — they are part of the closeout package the contractor was already paid to produce. The line item to verify in the contract is "as-built deliverable" with a stated format (PDF, CAD, BIM).

Commissioned retroactively (no as-builts exist, you need them for a permit, refinance, appraisal, or future renovation):

• Marked-up PDF from field measurement: $800 – $1,800 for a typical 1,500–3,000 sqft single-family home.
• 2D CAD as-built from field measurement: $1,500 – $3,500.
• Laser-scan + BIM model: $3,000 – $8,000+ for the same home, with deliverable accuracy to ±1/8" on key surfaces.
• Surveyor-stamped site as-built (exterior only): $650 – $2,200 depending on lot complexity.

Per-square-foot pricing in metros where this is offered runs $0.10 to $0.50/sqft for CAD, $0.40 to $1.20/sqft for BIM. Local-firm prices in 2026 reflect a roughly 8–12% increase over 2024 levels, driven by laser-scan equipment cost and architect hourly rates.

How to request as-built drawings from a previous owner or city archives

If you bought a home and the seller didn't transfer the closeout package, two recovery paths exist. First, request the closeout file directly from the seller's attorney or escrow — closeout documents are typically retained for 6 to 10 years and are owner-property. Second, the city or county building department maintains archived plan sets for every permitted project. Filing a public records request with the local building department usually returns the original permit set (not the field-modified as-built) within 10 to 30 business days, sometimes for a small per-page copy fee. Title insurance providers also sometimes retain as-builts in their underwriting file — worth a call.

As-builts as evidence in remodel disputes and insurance claims

When a renovation goes wrong — a leak appears six months later, a wall fails an inspection, a discovered code violation emerges — the as-built drawings are the primary evidence of what the contractor delivered. Insurance claims for water damage, slab leaks, and electrical failures regularly turn on whether the as-built showed the actual run path of the failed system. Homeowners without as-builts pay for exploratory demolition to prove what was built; homeowners with them often resolve the claim from the paperwork alone.

When to commission as-builts retroactively (homeowner decision framework)

Commission retroactive as-builts when ANY of: (a) you are planning a major renovation within 24 months and the original drawings are missing; (b) you are refinancing or selling a home with major undocumented renovation work; (c) you have an active code violation citation requiring documentation; (d) an insurance claim is pending and the carrier requested as-built evidence; (e) the property was unpermitted and you are pursuing retroactive permit legalization (common in Los Angeles, Long Beach, and parts of the Bay Area). Skip the retroactive commission if your renovation is a single-room cosmetic refresh and the existing condition is well-understood — the cost outweighs the benefit.