Post-construction cleaning can involve chemical labels and safety data, silica or other construction dust, waste streams, lift use, high access, sharp debris, and work around incomplete building systems. The applicable controls depend on the project. Require the contractor to identify its methods, training, equipment, and waste plan, and coordinate them with the general contractor's site rules.
Security, keys, elevator use, loading, temporary utilities, fire-life-safety status, occupied neighbors, and after-hours access should be documented. Confirm insurance and any project-specific screening or safety requirements before mobilization. Cleaning acceptance should not be represented as code, accessibility, commissioning, or indoor-air-quality certification unless a qualified party separately provides that service.
Releasing an area while dusty or wet work continues causes avoidable re-soiling and can hide responsibility. Use prerequisite checklists, control re-entry, and price authorized re-cleaning separately from the original final clean.
Aggressive blades, pads, or solvents can scratch glass, haze metal, soften coatings, or alter stone and flooring. Test the exact residue on the exact finish and record limitations before broad removal.