Access and site conditions
Hidden damage, cramped access, an occupied home, ceiling height, sloped grading, landscaping, and finish protection can all add time and cost.
What the scope should spell out
Repair limits, equipment capacity, matching materials, disposal, testing, and restoration all need to be explicit in writing.
When permits or specialists get involved
Some jobs need permits, inspections, engineering input, environmental testing, or a specialty trade -- check with your chosen provider and the local authority.
Planning reference only
Nothing quoted here is a real offer. Insist on a written scope and price specific to your property.