The protocol comes first.
An independent assessor writes a remediation protocol: what to remove, how far past visible growth, what containment is required, and what clearance testing follows. The estimate should follow that document line for line. An estimate written without a protocol is guessing at scope.
Containment is measured.
Poly containment, zipper doors and negative air machines are priced by area and by day. The days should match the protocol's expected duration, not a round number.
Removal, cleaning and encapsulation are different items.
Removing affected drywall is one line. HEPA vacuuming and wiping the framing behind it is another. Encapsulating remaining surfaces, where the protocol allows it, is a third. Collapsing them hides quantity.
Clearance before rebuild.
Post-remediation testing by an independent party confirms the work is done. Rebuild does not start until it passes. The estimate should show clearance as its own item, and the rebuild as a separate phase with its own scope.
Two scopes, one file.
Remediation and reconstruction are different trades with different documentation. Writing them separately is not padding — it is what makes each one defensible.