In Krukowski v. Steffensen (194 AD2d 179) the plaintiff was injured while working on a roof of premises being put to both a commercial and residential use. The upper level of the house was used primarily but not exclusively as a residence and the lower level was devoted to a photography business. The defendants employed three employees at the premises and 70% of the expenses and depreciation on the property were allocated to the business and there was a separate entrance to the building for the business. In an opinion of Justice Santucci, the Second Department noted the Court of Appeals statement in Van Amerogen v. Donnini that exemption may " 'properly be extended "only so far as the language of exception fairly warrants, and all doubts should be resolved in favor of the general provision rather than the exception" ' " (Krukowski v. Steffensen, supra, at 182.)