A kitchen or bathroom remodel is a systems project as well as a finish project. Before selecting tile and cabinetry, establish the layout, plumbing, electrical demand, ventilation, waterproofing, access, approvals, and the condition behind the existing surfaces.
Decide whether the layout is changing
Replacing finishes in their existing locations can be materially different from moving a sink, toilet, shower, range, or wall. A layout change may affect shared stacks, drainage, electrical circuits, structure, or neighboring rooms. Ask the designer and trades to explain these dependencies before treating the drawings as a fixed-price scope.
Confirm measurements, appliance clearances, door swings, and the proposed use. Do not assume an attractive layout is permitted or constructible in the existing building. Review the permit guide early.
Investigate the concealed work
Have the appropriate trades assess accessible supply and drain piping, electrical circuits, ventilation routes, and signs of water damage. Record what remains unknown until surfaces are opened and how that work will be priced and approved.
In an older home, a modern appliance or recently replaced fixture does not establish that the entire system was updated. The knob-and-tube guide explains the electrical questions. The building-systems guide addresses leak sources and shared services.
Specify waterproofing and ventilation, not only finishes
Ask the contractor to describe the proposed wet-area assembly, compatible products, installation responsibilities, and required inspection or testing. A finished tile surface is not by itself evidence that concealed water management was correctly installed. Retain the specifications and available progress documentation.
Establish where kitchen and bath exhaust will discharge and how any shared ductwork is handled. The Department of Energy’s ventilation assessment guidance is a useful investigation framework. Equipment should be selected and installed for the actual conditions and applicable requirements, not a generic fan-size recommendation.
Confirm the permit pathway
San Francisco has a kitchen and bath application pathway with conditions. Confirm the building classification and actual scope with DBI; work outside the pathway may need a different review. Identify building, electrical, and plumbing/mechanical responsibilities explicitly.
Ask which inspections must occur before concealed work is covered. Approval of a product selection or a contractor invoice is not the same as permit sign-off.
Plan for lead, asbestos, and finish restoration
Before disturbing old paint, flooring, backing, insulation, or pipe materials, determine whether professional assessment is needed. Do not assume a later layer of paint or tile establishes the absence of older material. Use the materials and hazardous-work guide before demolition is scheduled.
Include adjacent surfaces, trim, painting, and repairs outside the room if access requires them. A bathroom quote may exclude damage to the ceiling below, and a kitchen quote may omit the electrical route from the panel.
Order products against a coordinated schedule
Resolve dimensions and compatibility before ordering cabinets, fixtures, appliances, or custom finishes. Ask who checks delivery, damage, storage, and missing components. Confirm whether the quoted allowance includes installation, taxes, and accessories.
Build a plan for temporary cooking, bathing, water shutdowns, and occupied areas. In a shared building, document notices and approvals, including any work on common systems. The TIC agreement guide helps separate private finish choices from shared obligations.
What should be complete at handover?
Reconcile the scope and changes, inspect the finished work with the contractor, and obtain applicable inspection results, equipment documentation, warranties, and maintenance instructions. Keep the contract and closeout requirements available throughout the project rather than assembling them only when a dispute arises.
This guide helps owners organize a project. Site conditions, design, code requirements, contracts, and specialist work need review by the relevant qualified professionals.