| Cantilever |
| A structural system that is supported only on one end. |
| Casing |
| Lengths of wood molding used to finish interior and exterior door and window frames. |
| Cement |
| A fine gray powder used to produce a bonding paste when mixed with water. |
| Certificate of Occupancy |
| A certificate issued by the building department stating that the house was built in accordance with the local building code and zoning ordinance and is suitable for occupancy. |
| Change Order |
| A written agreement between the Owner and Contractor that modifies the original Contract sum or Scope of Work. |
| Circuit breaker |
| A switch that automatically breaks the electric circuit when a short or overloading occurs. |
| Coffered Ceiling |
| A ceiling that is usually higher and shaped differently from the main ceilings. The highest surface of a coffered ceiling is always flat. |
| Compressor/Condenser |
| This cooling unit supplies cold refrigerant to evaporated coils in the main supply ductwork. |
| Cornice |
| Also known as the eave of a pitched roof, usually consisting of the soffit and fascia boards. |
| Covenants |
| A part of the deed that stipulates certain uses or restrictions on the use of the property. |
| Crawl space |
| A low enclosed space below the first floor of houses without basements. |
