What this covers
A room addition extends the home's footprint with a new foundation, framing, roof and exterior, tied into the existing structure and finished so it reads as original. The work includes design and permits, excavation and foundation, framing and roofing, siding and windows to match, electrical, HVAC and plumbing extensions, insulation, and the interior finishes.
When to call
- A family that has outgrown the house but wants to stay.
- A need for a bedroom, family room or larger kitchen that the current footprint cannot provide.
- A lot with room to build and zoning that allows it.
What to expect
- Design and permitsPlans are drawn, setbacks and zoning checked, and permits obtained.
- Foundation and shellExcavation, footings and foundation, then framing, sheathing, roofing, windows and siding.
- Tie-in and systemsThe addition is opened into the house. Electrical, HVAC and plumbing are extended by licensed trades and inspected.
- Interior finishInsulation, drywall, flooring, trim and paint, then a walk-through.
Get a certified company
Look up a certified company by ZIP code. Every company's license, insurance and trades are verified before it is listed, and placement is never paid.
Questions people ask
Will the addition match the house?
Matching roof pitch, siding, windows and trim is part of the design. Older materials are matched as closely as current products allow, and the company shows you samples.
Can we live in the house during the build?
Usually. Most of the work happens outside the existing walls until the tie-in, which the company schedules with you.
Does the existing heating system have enough capacity?
The company checks this. A larger unit, a zone, or a separate system for the addition are the usual answers.
Related: Second-story additions · Sunroom additions · Accessory dwelling units (ADUs) · All remodeling
This page describes what the service involves. The company you hire sets the scope, the schedule and the price, and your contract is with that company. We verify credentials and collect reviews from real jobs. We do not guarantee any company's workmanship. Safety steps are general guidance. When in doubt, leave the home and call 911.