Industry protocols that an Architect implements on an apartment renovation project offer cost control from Initial Meeting to Final Completion.
Builder cost estimates before Architect engagement are not reliable as there are no drawings available at that stage.
A Construction contract (Owner/Builder Contract) that an Architect advises on covers omissions in Builder estimates for an Owner's protection. Change orders proposed by a Builder are reviewed by an Architect and Owner together, as an Architect can evaluate proposed cost changes against contract and drawings.
True-cost estimates are only based on Architect-prepared drawings.
ONLY SIGN A CONTRACT WITH A BUILDER WHEN COST ESTIMATES ARE BASED ON ARCHITECTURAL DRAWINGS PREPARED BY AN ARCHITECT.