Free Tool

Notice Deadline Calculator

Figure out exactly when your change-order or claim notice is due — based on the standard-form notice period in your contract, or a custom day count you enter yourself.

Contract type

Date of event / discovery

Not legal advice. Standard-form periods shown here are commonly used defaults — always confirm the actual notice clause in your signed contract, which may be modified by amendment or exhibit.

Why notice deadlines matter more than estimating

Up to 20% of construction profit gets lost to unbilled extras — work that happened but was never formally noticed, documented, or billed in time. Most GC agreements set a strict window (often 14–21 calendar days) to submit written notice after a change or claim event. Miss it, and you can lose the right to be paid for that work entirely, regardless of how good your original estimate was.

Built for specialty trade contractors

This tool is part of ScopeLedger, built for electrical, mechanical, HVAC, and fire-protection contractors who need every change order and notice deadline tracked automatically — not buried in a 60-page GC agreement.