What this covers
Building up adds space without using the yard, but it asks a lot of the structure below. The work starts with engineering, then strengthening the foundation and first-floor walls as needed, removing the roof, framing the new floor, walls and roof quickly under temporary protection, and finishing inside and out. Workers on the structure use proper staging and fall protection throughout.
When to call
- A small lot where building out is not possible.
- A need for several bedrooms and a bathroom rather than one room.
- A home whose structure an engineer confirms can be made to carry a second floor.
What to expect
- Engineering and designAn engineer assesses the foundation and framing. Plans and permits follow.
- Strengthen belowFoundation, posts, beams and first-floor walls are reinforced as the engineer specifies.
- Roof off, floor onThe roof is removed and the new floor, walls and roof are framed and dried in as fast as weather allows.
- Systems and finishStairs, electrical, plumbing, HVAC, insulation and finishes inside and out, 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
Do we have to move out?
Often yes, at least while the roof is off and the floor is framed. The company tells you the window when it has the schedule.
How is the house protected while the roof is off?
Temporary roofing and tarps are fitted each day, and the framing phase is scheduled for dry weather. Even so, it is the riskiest part of the job and the company plans it closely.
Where does the stair go?
The stair takes floor space from the first floor. Its location is decided in design, and it often shapes the whole layout.
Related: Room additions · Attic conversion · Load-bearing wall removal · 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.