City Plasterers Ltd
Clemence Glass and Paint Ltd
Climate Action Niagara
Clintar Groundskeeping Management
Cobra International
Coholan Electric Ltd
Coliseum Paving
Collee Excavating and Trucking Inc
Colley Painting
Colley Painting and Maintenance
Collison C B Plumbing
Colonna Joseph G A Architect Inc
Commercial Cleaning Services
Commercial Electric (Welland) Ltd
Commercial Painters
Concrete By Serge Corriveau
Concrete Image
Conestoga-Rovers and Associates Ltd
Confederation Plumbing And Htg Limited
Conlon Concrete