1. Foundation Stage - This includes excavation, footings, foundation walls (or slab), waterproofing, backfill and compaction, and underground plumbing. Municipal inspections are typically performed on the foundation (prior to pouring) and underground plumbing. In some areas an engineer can inspect and sign off on the foundation in lieu of municipal inspection. 2. Framing Stage - This includes wood or steel framing, exterior wall and roof sheathing, exterior trim and siding (and/or stucco/brick), windows and exterior doors, and roofing. Municipal inspections are typically performed on the rough framing. Some municipalities inspect the roofing. 3. Rough Plumbing, Mechanical, Electrical Stage - This includes water and waste/vent piping, plus setting of the water heater; ductwork, venting and furnace installation; wiring and electrical panel installation. Municipal inspections are typically performed on all three. 4. Insulation and Drywall Stage - This includes wall insulation, (but not attic insulation at this time), drywall installation, tape and texture. This stage cannot begin till the rough stage inspections are passed.. Municipalities have a drywall nail/screw inspection prior to tape and texture. 5. Paint, Trim, Finishes Stage - This includes finished flooring, cabinets, countertops, wall tile, mirrors, shower doors, final electrical (including fixtures), final plumbing (including fixtures), and final mechanical. Municipal inspections are performed on the final electrical, plumbing, and mechanical. When these inspections are passed, the municipality then typically performs a "Final Inspection." I usually call this a "FINAL-final inspection" to avoid confusion. Based on this "Final" inspection the Certificate of Occupancy (CO) is typical issued.