Thinking of a Home Addition? What Should You Expect For Your Budget?

You thought about the way you use your existing home, met with a local builder to see what your options are for a new addition.
Below you find a few items that you need to consider when establishing a budget. These items are listed in the order that they will most likely occur when preparing for and completing an addition.
Plans: $2,000 – $5,000
Designer: $1,500 – $5,000
Excavation: $9,000
There are a few different areas we need to address when budgeting for concrete:
Footings: $75.00 – $125.00 per linear foot
A footing is a concrete form placed below the frost line with the walls added on top. The footing is wider than the wall, providing extra support at the base of the foundation to help carry the weight of the home.
Walls: Foundation walls will either be poured concrete or concrete blocks.
There are advantages and disadvantages of both. In my opinion both methods will lead to problems if not done right. Both methods can last a long time if done properly.
Slab: $6.00 a square foot
The slab is the concrete floor whether in the basement, garage, or patio.
For calculating a budget framing can be broken down into three categories:
Frame floors: $12.00 a square foot for labor and material
If you are building a 20X20 addition the square footage would be 400 square feet. The budgeted costs to frame each floor would $4,800.
If you are adding a two story addition then you would have two floors.
For the floor framing you would have ledger boards, Joists, and a subfloor underlayment.
Frame exterior walls: $7.00 a square foot
If you have a 20 foot wall 8 feet high the square footage of the wall would be 160 square feet. You need to calculate the square footage for each wall.
Framing includes building the exterior walls with 2×6 studs 16 inches on center. Frame window and door openings. Install exterior sheathing. Install house wrap.
Frame soffit and fascia.
Frame interior walls: $3.00 a linear foot
Take the length of the wall and multiply by $3.00 to get a budgeted price for framing.
Includes 2×6 studs 16 inches on center.
Roofing: $30.00 a square foot
Install roof sheathing. Apply ice and water shield. Apply #15 felt paper, use a 25 year shingle, install necessary vents.
Once the roof is on and the shingles are installed, and the house wrap is installed the addition will be water proof. The openings for the windows will be cut out when the windows are to be installed.
The next step for the addition will be to install the windows, insulation, drywall, flooring, and etc.