What are the records retention requirements for construction projects, and how long do you keep contracts, drawings, and inspection records after a building is finished?

Construction projects generate some of the longest-lived records an organization holds. Unlike routine paperwork, many of these documents stay relevant for the entire life of the structure. There is no single universal retention period, so the right answer depends on the record type, the obligations attached to it, and the laws that apply to your jurisdiction and sector.

Start with the drivers, not a number

Retention for construction records is driven by several overlapping factors:

• Statutes of limitation and repose for construction defects, which set how long a party can be sued over a building. These vary by state and can run many years after substantial completion.
• Contractual obligations, including warranty, indemnity, and bonding periods.
• Tax and accounting rules, which govern cost, depreciation, and capital-asset records.
• Regulatory and safety requirements for permits, inspections, and code compliance.

Because these clocks often start at project completion rather than the document’s creation date, retention should be measured from substantial completion or final acceptance.

Typical record categories

• Contracts and agreements — Keep through the full warranty and liability window, then per your tax and audit needs. Many organizations retain these well beyond completion because they prove scope, change orders, and payment terms in any dispute.
• Drawings and specifications — As-built and record drawings document what was actually built. Treat these as permanent or near-permanent: they are essential for future renovations, safety, and litigation.
• Inspection, testing, and certification records — Retain at least through the applicable statute of repose, since they demonstrate code compliance and structural integrity.
• Permits and certificates of occupancy — Keep for the life of the building.

Build a defensible schedule

Capture these requirements in a formal retention schedule that names each record series, the trigger event, the retention period, and the legal basis. Tax-related records have their own minimums (the IRS publishes guidance on how long to keep them), and government entities often follow published schedules such as NARA’s General Records Schedules. Apply legal holds when litigation is anticipated, and document your disposition decisions.

For more on managing these records in digital form, see the electronic records topic hub.

When in doubt, retain as-built drawings and core compliance records longer rather than shorter — they are hard to recreate and costly to lose.