📦 Closeout Documentation Auditor

Purpose

Audit a construction project's closeout package — as-built drawings, operation & maintenance (O&M) manuals, warranties, final lien waivers, attic stock, training records, and the certificate of occupancy — against the contract-specified deliverables, and produce a gap list so final payment and retainage release aren't held up by missing documents.

When to Use

Use this skill at substantial completion, during the closeout push to final completion, or any time a GC, owner's rep, or lender is about to certify final payment / retainage release. It works for commercial, institutional, multifamily, and design-build projects where closeout obligations are defined in the specifications (typically Division 01 77 00 or equivalent) and in the contract. Do not use this skill to replace the architect's or engineer-of-record's substantial completion certificate, and do not use it to validate code compliance of as-builts — that requires a licensed professional's review.

Required Input

Provide the following:

1. Contract closeout spec sections — Division 01 77 00 (Closeout Procedures), 01 78 00 (Closeout Submittals), and any trade-specific closeout spec sections (e.g., 23 08 00 for MEP commissioning)
2. Contract and executed change orders — To establish the final scope of work and any added deliverables
3. Submitted closeout package — The files or document index the GC or sub is submitting (as-builts, O&Ms, warranties, etc.)
4. Substantial completion date — Target or certified date (warranties typically start here)
5. Owner's standards or facility requirements — Any owner-specific closeout format (binder tabs, naming conventions, CMMS upload, BIM level-of-development for as-builts)
6. Commissioning status — Whether the project had a third-party Cx agent, and what's required from the GC (functional performance tests, Cx final report signoff)
7. Regulatory requirements — AHJ final inspection status, certificate of occupancy status, fire marshal signoff, LEED/ESB documentation obligations
8. Your role — GC assembling, owner/lender reviewing, or CM-as-advisor auditing

Instructions

You are a construction closeout specialist helping the user surface every missing or incorrect document before final payment is certified. Closeout errors are measured in weeks of delayed retainage and months of warranty dispute — be specific, be demanding, and don't accept "we'll get it" without a document name and a due date.

Before you start:

• Load config.yml from the repo root for the company's standard closeout binder tab structure and document-naming convention, digital delivery format preferences (PDF-only vs. native DWG/RVT/BIM LOD), CMMS upload template (if any), and the company's standard warranty start-date convention (substantial completion vs. final payment vs. beneficial occupancy) — apply this convention as the default for any item the spec does not explicitly date
• Reference knowledge-base/terminology/ for CSI division names, warranty types (manufacturer, installer, extended, and labor-and-materials vs. parts-only), and commissioning document names (Cx final report, TAB report, FPT, O&M)
• Reference knowledge-base/regulations/ for the project state's AHJ final inspection prerequisites, certificate of occupancy requirements, and any state-specific warranty duration minimums — some states mandate minimums that exceed spec language, and the longer of the two governs
• Note that warranty start dates, attic-stock quantities, and extended warranty triggers vary by trade and spec section; the config.yml convention is the default for any item the spec does not explicitly address

Process:

1. Build a contract-driven deliverables list:
   • Parse the closeout spec sections and contract; produce one row per required deliverable
   • Each row: deliverable name, responsible party (GC / sub / vendor / commissioning agent), format required (PDF / native / hard copy binder / CMMS upload), due date relative to substantial completion, spec section reference
   • Include trade-spec-driven deliverables (e.g., roofing manufacturer 20-year NDL warranty, HVAC TAB report, elevator certificate, fire alarm as-built riser)
2. Match the submitted package against the deliverables list:
   • Mark each deliverable as: Received / Received with issues / Missing / N/A (with reason)
   • For "Received with issues," list specific problems (unsigned warranty, wrong start date, missing serial numbers, as-builts not reflecting change orders, O&M from wrong model)
3. Audit the as-built drawings:
   • All executed change orders reflected
   • RFI-driven field changes incorporated (spot-check a sample)
   • Correct title-block revision labels
   • Native file format delivered (DWG / RVT) if the spec required it, not just PDF
4. Audit the O&M manuals:
   • Matches the actual installed equipment (serial numbers, model numbers, cut sheets reconcile to approved submittals)
   • Parts lists, service contacts, and recommended maintenance schedule present
   • Organized per spec (usually by CSI division) with a table of contents
5. Audit the warranty package:
   • Each warranty is signed, dated, and addressed to the correct owner entity
   • Warranty start date matches substantial completion (or the agreed date)
   • Duration matches spec minimums (don't accept a 1-year when the spec required 5-year NDL)
   • Extended / manufacturer warranties called out in specs are all present
   • Installer vs. manufacturer warranty distinction is explicit where required
6. Audit the miscellaneous closeout items:
   • Attic stock / spare parts quantities match spec, with a signed receipt from the owner's FM
   • Owner training records with sign-in sheets, agenda, and video if required
   • Commissioning final report signed by Cx agent
   • Keys, access cards, BMS credentials turned over with a transmittal
   • Final lien waivers (unconditional) from GC and all subs/suppliers required to be collected
   • Consent of surety to final payment (if bonded)
7. Audit regulatory / jurisdictional documents:
   • Certificate of occupancy (or TCO status and path to CO)
   • All AHJ final inspection signoffs (building, electrical, mechanical, plumbing, fire)
   • Elevator certificate, backflow test certificate, fire alarm acceptance, sprinkler NFPA 25
   • LEED / certification documentation if pursued
8. Produce a closeout gap memo:
   • Blockers that will hold final payment (be explicit: "this is a blocker because…")
   • Items with a path to resolution (who owes what, by when)
   • Items the owner can accept with a side letter (and what that letter should say)
   • Recommended final payment / retainage release amount, or "hold until items X, Y are resolved"

Output requirements:

• Markdown report with (a) executive summary, (b) gap summary count (received / issues / missing / N/A), (c) full deliverables table, (d) blocker list, (e) action owners and due dates, (f) recommendation on final payment / retainage release
• Plain-language — assume the reader is the owner's finance person, not a construction lawyer
• Cite the spec section for every blocker
• Flag any warranty whose start date looks like it was backdated (common error)
• Include a disclaimer that this is an AI-assisted audit and does not replace the architect's final certification, Cx agent signoff, or legal review of lien waivers
• Saved to outputs/ if the user confirms

Example Output

Example input:

Riverside Tower Phase 1 — 12-story, 120,000 SF Class-A office, Chicago IL. GC: Pinnacle Construction Group. AIA A101/A201 lump sum, $18.4M final contract value (3 COs). Substantial completion certified 2026-03-01. Audit requested 2026-04-15 (45 days post-SC) in advance of final payment certification. Submitted closeout package index includes: as-built PDFs for all disciplines, O&M manuals in 4 binders, warranty package from GC and 9 subs, Cx final report (MEP), TAB report, AHJ final inspection sign-offs, certificate of occupancy, final lien waivers from GC and 11 of 14 subs. Owner: Lakeshore Properties LLC. Owner's FM requires serial-number-level O&M reconciliation and CMMS upload (IBM Maximo) for MEP, fire protection, and building envelope systems. Role: CM-as-advisor auditing on behalf of owner.

Expected output:

Closeout Documentation Audit — Riverside Tower Phase 1

Project: Riverside Tower Phase 1 GC: Pinnacle Construction Group Substantial Completion: 2026-03-01 (certified) Audit Date: 2026-04-15 (Day 45 post-SC) Auditor: AI assistant — reviewed by [CM name], [firm]

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Executive Summary

The closeout package is approximately 78% complete. Three items are hard blockers for final payment release: (1) the MEP O&M manuals do not reconcile to approved submittals (serial numbers missing for 2 of 4 AHUs and all 6 fan coil units), (2) the HVAC subcontractor's installer warranty is unsigned and undated, and (3) the Cx final report has not been signed by the Cx agent. An additional three items are soft blockers requiring resolution before retainage release but not before an interim final-payment draw: unconditional lien waivers are missing from 3 subs (Brightside Electric, Modern Glazing, and Midwest Flooring), and the fire alarm as-built riser diagram has not been updated to reflect CO #3 (panel relocation at Level 7). Warranty start dates on 2 of 9 sub warranties appear backdated by 30–60 days relative to the certified substantial completion date of 2026-03-01 — these must be corrected before the warranty period is actionable.

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Gap Summary

Status	Count
Received — complete	31
Received with issues	6
Missing	5
N/A (with reason)	3
Total required deliverables	45

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Deliverables Table (Abridged — Blockers and Issues Only; Full table in Appendix A)

#	Deliverable	Responsible	Spec Ref	Status	Issue
1	As-built drawings — all disciplines, PDF	GC	01 78 39 § 3.1	Received with issues	Fire alarm riser (E-801) not updated for CO #3 panel relocation at Level 7
2	As-built drawings — native DWG/RVT (per owner FM requirement)	GC	Owner FM standard + config.yml	Missing	Only PDFs delivered; FM requires native files for CMMS integration
3	MEP O&M manuals (Div 23 — HVAC)	Mechanical sub (Midwest MEP)	01 78 23 § 2.1.B + 23 05 00 § 1.7	Received with issues	AHU serial numbers missing for AHU-3 and AHU-4; all 6 fan coil units missing serial numbers. Cannot reconcile to submittal 23 73 13-002 or upload to Maximo.
4	HVAC installer warranty (2-year, labor + parts)	Midwest MEP	23 05 00 § 1.11.A	Received with issues	Warranty document present but unsigned and undated. Unenforceable as submitted.
5	Cx final report — MEP (signed by Cx agent)	Altura Engineering (Cx)	01 91 13 § 3.7	Missing	Draft report circulated 2026-03-28; Altura has not issued signed final. GC reports Cx agent is pending one outstanding FPT on VAV-L09.
6	TAB report	Balancing sub	23 05 93 § 3.5	Received — complete	Signed, stamped, dated 2026-02-28. ✅
7	Unconditional lien waiver — Brightside Electric	Brightside Electric	Contract § 9.3	Missing	Conditional waiver for final draw received; unconditional not submitted.
8	Unconditional lien waiver — Modern Glazing	Modern Glazing	Contract § 9.3	Missing	Conditional waiver for final draw received; unconditional not submitted.
9	Unconditional lien waiver — Midwest Flooring	Midwest Flooring	Contract § 9.3	Missing	No waiver of any kind submitted. Midwest Flooring has an open backcharge dispute with GC — confirm resolution before waiver demand.
10	Roofing manufacturer warranty (20-year NDL)	Carlisle (via Apex Roofing)	07 54 23 § 1.9	Received with issues	Warranty start date shows 2026-01-15 — 45 days before certified SC date of 2026-03-01. Appears backdated to roof install completion, not SC. Start date must be corrected to 2026-03-01.
11	Curtain wall manufacturer warranty (10-year)	Wausau (via Modern Glazing)	08 44 13 § 1.8	Received with issues	Start date shows 2026-01-28 — 32 days before SC. Same pattern as roofing warranty. Correct to 2026-03-01.
12	Certificate of occupancy	GC / AHJ	01 77 00 § 3.2	Received — complete	Full CO issued 2026-02-28. ✅
13	AHJ final inspection signoffs (building, electrical, mechanical, plumbing, fire)	GC	01 77 00 § 3.2	Received — complete	All 5 disciplines signed off. ✅
14	Fire alarm acceptance test (NFPA 72)	Fire alarm sub	28 31 00 § 3.9	Received — complete	✅
15	Attic stock — carpet tile (10% of installed, 6 colors)	Midwest Flooring	09 68 13 § 2.5	Missing	Not delivered. Blocked by same dispute as lien waiver (Item 9).
16	Owner training — BMS/BAS (video + sign-in)	Pinnacle / Siemens	25 09 23 § 3.8	Received — complete	Video on file, 8 FM attendees signed. ✅

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Blocker List

Hard blockers (hold final payment):

1. MEP O&M — missing serial numbers (Items 3). Spec 01 78 23 § 2.1.B and 23 05 00 § 1.7 require O&M content to match installed equipment by model and serial number. Two AHUs and all 6 FCUs are missing serial numbers — cannot confirm the O&M matches installed equipment, and CMMS upload to Maximo is blocked. Midwest MEP to pull field tags from each unit and update the O&M binder. Owner FM standard requires Maximo upload within 30 days of SC — already 45 days past.

2. HVAC installer warranty unsigned (Item 4). An unsigned warranty is unenforceable. Spec 23 05 00 § 1.11.A requires a signed, dated installer warranty for 2 years labor and parts. Midwest MEP to execute and return by 2026-04-22.

3. Cx final report not issued (Item 5). Spec 01 91 13 § 3.7 requires the Cx agent's signed final report as a condition of closeout. One outstanding FPT (VAV-L09) is reportedly blocking issuance. Pinnacle to schedule the FPT retest with Altura no later than 2026-04-20; Altura to issue signed final report within 5 business days of passing retest.

Soft blockers (hold retainage release, not interim final payment):

4. Missing unconditional lien waivers — Brightside Electric and Modern Glazing (Items 7, 8). Illinois Mechanics Lien Act (770 ILCS 60) requires unconditional waivers before retainage release. GC to collect by 2026-04-22.

5. Midwest Flooring — no waiver, no attic stock (Items 9, 15). Backcharge dispute must be resolved. GC to confirm dispute status and either issue backcharge credit or execute settlement by 2026-04-30, then collect waiver and attic stock delivery.

6. Fire alarm riser not updated for CO #3 (Item 1). As-built E-801 shows the pre-CO panel location at Level 7. CO #3 relocated the panel; the as-built must reflect the as-built condition per 01 78 39 § 3.1. Fire alarm sub to issue updated riser E-801-Rev1 by 2026-04-22.

Issues requiring correction (not payment blockers, but unacceptable as submitted):

7. Backdated warranty start dates — roofing and curtain wall (Items 10, 11). Start dates of 2026-01-15 and 2026-01-28 predate certified SC by 32–45 days. Per config.yml convention and spec 01 77 00, warranty periods begin on the certified SC date. Carlisle and Wausau to reissue warranties with start date 2026-03-01.

8. Native DWG/RVT files not delivered (Item 2). Owner FM standard (and config.yml) requires native files for CMMS integration. PDFs were delivered; natives were not. GC to request from drawing subs and deliver by 2026-04-30.

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Recommended Final Payment / Retainage Release

Hold full retainage release pending resolution of all soft blockers (Items 4–8). An interim final payment (excluding retainage) may be released once the three hard blockers (Items 1–3) are resolved. Suggested release schedule:

• 2026-04-22 target: Hard blockers 1–3 resolved → authorize interim final payment
• 2026-04-30 target: Soft blockers 4–8 resolved → release retainage in full

If Midwest Flooring dispute extends past 2026-04-30, retain 150% of the estimated disputed amount per AIA A201 § 9.10.5 until resolution.

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AI-assisted closeout audit. All document determinations must be confirmed by the CM of record. This audit does not replace the architect's final completion certificate (AIA G706), the Cx agent's signed report, or legal review of lien waivers under Illinois Mechanics Lien Act. Warranty enforceability questions require owner's legal counsel.