Room and layout: Room size, retained fixtures, demolition limits, same-layout work, and reconfiguration affect different systems and repairs. Use the same measured existing plan and clearly labeled proposed alternatives. Confirm this factor in the written scope before comparing totals.
Wet area and products: Shower or tub assembly, drain, waterproofing, walls, valves, glass, storage, accessories, and product allowances may not match. Name products, quantities, installation boundaries, testing, and who supplies each item. Confirm this factor in the written scope before comparing totals.
Trades and authority: Plumbing, electrical, ventilation, permits, inspections, registrations, and closeout responsibilities can be included or excluded. Identify every responsible business, milestone, fee assumption, and required confirmation. Confirm this factor in the written scope before comparing totals.
Existing conditions and changes: Access, protection, concealed findings, repair limits, shutdowns, debris, and household logistics can change the operating plan. Compare assumptions, exclusions, contingency, documentation, authorization, and schedule effects. Confirm this factor in the written scope before comparing totals.
Schedule and closeout: Products, fabrication, decisions, inspections, cure time, corrections, warranties, and final records create different dependencies. Use milestone schedules, decision dates, payment terms, correction procedures, and a defined handoff. Confirm this factor in the written scope before comparing totals.