Ask each bidder to identify which supply lines, risers, suites and common areas are included, and which will remain. The quote should name the proposed new pipe system, access openings, fixture reconnections, testing, and the level of drywall, texture and painting restoration. A price for pipe installation alone cannot be compared fairly with a price that returns occupied suites to a finished condition.
For a whole-building project, also ask for the sequence by unit, planned water shutoffs, resident notices, site protection, permit and inspection responsibilities, exclusions, and the close-out records council will receive. Confirm how concealed conditions and changes will be priced. Canyon's plumbing service page describes strata repiping and drywall restoration, but the exact inclusions belong in the written project scope.