Your typical house addition, without a bathroom or kitchen, usually runs between a 100 and 150 dollars per square foot. These are average cost and costs can go up greatly, depending on the size and shape of the addition. Let’s get in to some of the details that can affect real home addition costs.
Let’s start with the size of the room addition, the smaller the room addition, the larger the square footage price will be. The reason for this is, and it might not make a lot of sense, but to a building contractor it will be perfectly clear, so pay attention. It’s almost the same amount of work to build a 10′ x 10′ room addition as it is to build a 14′ x 14′ home addition.
You’re only talking about doing a little more digging, for the foundation but the concrete form work and foundation concrete pour will usually take the same amount of time, in labor. The materials might cost more money, but it won’t be that much.
The same steps apply to the framing, drywall, stucco, siding, interior finish, carpeting and all the other stuff involved for building your new addition.
You will definitely run into a difference, in room building costs, once you start to go from a 10′ x 10′ to a 16′ x 20′ room addition, but the square footage price will start to lower as the building gets larger. Providing no kitchens or bathrooms will be installed.
To build the smaller room addition, you might be looking at $ 150 per square foot, giving you a grand total of $ 15,000 to build a 10′ x 10′ home addition.
To build the larger house addition, you might be looking at $ 100 per square foot, giving you a grand total of $ 32,000 to build a 16 foot by 20 addition.
Keep this in mind when you’re trying to figure out, how much your room addition is going to cost. Size does matter and you should keep that in mind.
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