Most residential jobs run 1 to 5 days. A contained problem, one bathroom wall or a small basement patch, is often done in a day. Multiple rooms, attic or crawl-space access, or major material removal pushes it to 3 to 5. Severe whole-home cases run 1 to 3 weeks. One Calgary-specific wrinkle: homes built before the 1980s may have asbestos in the drywall compound or insulation, and licensed abatement alongside the mold work adds time.
The sequence is what takes the days: inspection and moisture assessment, containment, removal and disposal, HEPA air filtration and sanitization, then clearance. Rushing containment or skipping clearance is precisely how cut-rate mold jobs fail and regrow. Nonstop Restoration scopes the timeline during the free inspection, so the estimate reflects your actual house and not a brochure.