Bathroom Remodel Planning: Define the Work Before Bidding

Decide whether the layout changes

List what stays, what is replaced, and what moves: toilet, shower or tub, vanity, lighting, outlets, and doors. Keeping plumbing locations may simplify coordination, while relocation can require additional plumbing, electrical, framing, and finish work. Ask bidders to identify assumptions rather than treating a sketch as a complete scope.

Select or specify fixtures and finishes before finalizing bids where possible. If selections are pending, proposals should state allowances, what those allowances include, and how a selection above or below the allowance changes the contract.

• Measure the room and note door swings, niches, and storage needs.
• Ask who orders, receives, checks, and stores owner-selected products.

Specify waterproofing and ventilation

Ask for the shower or tub surround waterproofing system by name and for an explanation of how seams, corners, niches, drains, and transitions are treated. Tile and grout are finish surfaces; ask what waterproof layer is behind them and how the assembly will be checked before it is covered.

Discuss the exhaust fan, duct route, exterior termination, and controls. The contractor should explain how moisture will be exhausted outdoors and how the work meets applicable requirements, rather than simply replacing a visible fan grille.

Coordinate trades and protect the home

A complete scope should identify demolition, dust containment, disposal, substrate repairs, plumbing and electrical work, inspection points, finishes, cleanup, and the expected period when the bathroom cannot be used. Clarify protection for adjacent rooms and how dust and debris will be managed.

Ask how concealed damage is documented and approved as a change. Comparable bids should include the same work and finish selections, describe exclusions, and state the payment schedule, completion expectations, permits, and labor warranty.