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Is your home feeling just a little bit cramped? Maybe the kids need their own space, or you have been working from the dining table and want a real office instead. Sometimes it is not about moving but about making more space in the same location. That is where a room addition comes in.
So before you get too deep into planning, you are probably wondering one big question: “How much does a room addition cost?”
In 2025, a room addition will generally cost around $22,000 to $83,000, and most people spend about $51,000. Why is this cost range so wide? Since no two additions are the same! Depending on the type of room you want to add, the size, finishes, and location of the house can all impact price. Let’s go over some details so you can begin planning with a good budget.
Rooms you add have varying price points. Here’s a look at what you could expect based on your desired room type.
Thinking of adding a bedroom? In terms of cost, this is probably the most inexpensive option. A standard-size bedroom addition (10×12) generally falls within the range of $18,000 to $36,000; a 20×20 bedroom could run between $32,000 and $80,000. Bedrooms are a better value, typically because they do not require extensive plumbing or custom utilities.
Bathrooms are usually a more expensive option. Plumbing, waterproofing, fixtures, tile and other material costs quickly add up, as bathrooms routinely start in the range of $30,000+.
If you would like more than just a bedroom, a full suite is often a combination including a bedroom and bathroom at a cost of approximately $45,000 to $135,000. The price is higher than a basic bedroom addition, but it makes the luxury have resale value.
If you enjoy light, a three-season sunroom will run in the range of $10,000 to $40,000, while a four-season insulated, year-round sunroom typically starts around $45,000. The only difference is how long you will enjoy the sun exposure the summer or year-round?
At times, you may not want a full room, just more space. A bump out(now you see it, now you don’t) generally costs somewhere between $4,000-$30,000. A bump out is perfect for making an additional section of the existing room, for example, a kitchen or living room.
Adding a second story is one upgrade that can really change a home. It also comes at a cost of $200–$500+ per building square foot, due to the amount of structural work involved.
This option provides you with the most living space possible. However, it is also the most expensive and structurally complex.
Wondering why there is such a wide range of pricing? Here are the major factors influencing cost.
The Cost of labor and material is always higher in cities than in rural areas.
A rectangular room is less expensive than a room that has custom angles and vaulted ceilings.
Usually, a general contractor will add 10–20% to the cost of the project. Nevertheless, general contractors will avoid many of the costs of adjustments due to a mistake you may make.
Each and every choice of material, from siding and roofing to flooring to windows, will affect the bottom line.
Kitchens are more expensive due to the installation of plumbing and electrical utilities in the design.
Permits will cost $150 to $2,000+, and site prep i.e, excavation, and work on the foundation will cost more.
It is helpful to understand these factors to control the aspects of your project you can, such as design and finishes, while preparing for the unavoidable expenses.
Adding space doesn’t have to drain your savings. With smart planning, you can keep the project affordable:
These choices may not sound dramatic, but together they can save you thousands.
Energy Efficiency Brings Value
One aspect many homeowners overlook is improving the energy efficiency of their home when they add an addition. Consider:
While these upgrades might take a little more to get, they typically yield reduced utility bills and provide year-round efficiency and comfort in your new space.
Omega Exteriors does the work in room addition, roofing, siding, windows, remodeling, and decks, making projects flow as easily as possible.
What are room addition prices in 2025? Most projects are between $22,000 and $83,000 dollars with an average price of about $51,000 nationally. Room additions of smaller square footage, such as bedrooms and bump-outs, will be closer to the $22,000 range; bathrooms, suites, and second stories will be closer to $83,000.
The most important idea in your price is to make sure you plan appropriately, understand what drives the price up, and work with a builder who understands how to see your larger plan.
At Omega Exteriors, we are not just building a room addition; we are creating a space that feels like it truly belongs to your home. We will guide you through your project, whether it is a kitchen expansion, a sunroom dream, or a new suite. We want to make every home we touch more beautiful and more efficient, ready to stand the test of time.
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