Exterior walls, interior partitions and the roof are assembled. This usually means erecting a framing skeleton and applying an exterior sheeting; or another framing technique may be used.

Once the house is fully framed, windows and doors are installed. The builder's aim is to get to "lock-up" where it is closed as quickly as possible to protect the structure from the elements.

The basement floor is installed. Electrical and plumbing services are roughed in, and ducting for heating, cooling and ventilation is put in place.

At this time, your municipality will probably require a structural inspection to ensure that the home meets all building code requirements. Electrical and plumbing inspections will likely be conducted as well.