Access and site conditions
Occupied space, tight hallways or stairs, height, slope, and how much of the rest of the house needs protecting all affect labor and sequencing.
Scope and materials
Repair boundaries, existing system capacity, material compatibility, disposal, testing, and restoration work should all be explicit, not assumed.
Permits and specialists
Some projects call for permits, inspections, engineering input, environmental testing, or a specialty trade — confirm which with the provider and the local authority.
A planning tool, not a quote
Nothing here is an offer. A written, property-specific scope is the only responsible basis for a real number.