Access
Opening and restoring walls, ceilings, cabinetry or exterior finishes can be part of the real project.
Compatibility
A new component may need controls, wiring, venting, drainage or adjacent materials to change.
Code and permit work
Current requirements can add scope when systems are altered.
Temporary disruption
Lost use of a room, alternate heat/cooling or moving belongings can matter even when it is not on the contractor invoice.
Safety boundary. General planning information only. Do not open, dismantle or work on hazardous electrical, gas, structural, fire-protection or contaminated-water systems unless you are appropriately qualified and authorized.