Demolition, protection, partitions, doors, ceilings, flooring, paint, lighting, power and data, plumbing, HVAC, fire-alarm or sprinkler coordination, signage, reception or display millwork, permits, access, after-hours work, cleanup, and concealed conditions can all change the scope.
A comparable quote keeps confirmed work separate from exclusions, allowances, owner-supplied items, design and permit responsibilities, building charges, site assumptions, and change rules. Unknown information stays visible instead of being hidden inside an attractive early number.