Before final payment, collect the certificate of occupancy, all final lien waivers, as-built drawings, O&M manuals, warranties, commissioning reports, keys and access credentials, and a completed punch list signed by both parties.
Closeout package
Certificate of occupancy and all final inspection approvals
Unconditional final lien waivers from the contractor and every subcontractor and supplier
As-built drawings and approved submittals in usable digital format
Operation and maintenance manuals, equipment warranties, and start-up reports
Commissioning or testing reports for mechanical, electrical, and life-safety systems
Signed punch list with completion dates, plus a written warranty start date
The warranty year
Calendar an eleven-month walkthrough before the one-year warranty expires. Systems that only run seasonally — heating, irrigation, dehumidification — often fail in their first full cycle, and a documented walkthrough while the warranty is live turns a repair bill into a warranty claim.
Common questions
Can I withhold money for an incomplete punch list?
Yes, if your contract allows it — most do, typically at 150–200% of the estimated value of the remaining work. Withhold a defined amount tied to defined items rather than the entire final payment, which invites a dispute.