How Do I Verify Milestone Completion before the Corresponding Payment Release?

Treat milestone payments as conditional on independent verification. For each milestone in the contract, insist on: a clearly defined achievement criterion (e.g., 'foundation completed and engineer sign-off' or 'structural frame weatherproofed and inspected'); a named, licensed inspector or engineer who will issue a report confirming completion; access rights for your representative to witness completion and review plans, permits and progress; a written certificate or inspector’s report attached to the payment request; documented progress photographs with time stamps; a retention clause (e.g., 5–10% of total contract value) until final handover to cover defects; a clear remedy for delays or incomplete work; and tying payment releases to verified completion rather than calendar dates. Ensure the contract binds these milestones to payment and that independent reviews occur before signing. In Khao Lak, local practice often relies on verifiable on-site progress and official inspections; request evidence that aligns with the actual status and involve a local lawyer and building professional before advancing funds.