A bedroom addition costs an average of $50,000, but most homeowners spend between $20,000 and $80,000 on this project.
Adding a bedroom to your home gives you more space for a growing family or can create a welcoming area for your guests. The average bedroom addition cost is $50,000, but it often ranges from $20,000 to $80,000. The project's final price will depend on the room's size, customizations, permits, labor fees from a general contractor, and more.
Most bedrooms are between 100 and 200 square feet, but they can be as large as 400 square feet for a primary bedroom. The size of the bedroom is the most significant cost factor for this addition project. A small guest bedroom of around 100 square feet costs between $8,000 and $21,000 while a large primary bedroom and bathroom addition costs up to $150,000.
| Bedroom Dimensions (Feet) | Square Footage | Cost Range |
|---|---|---|
| 10 x 10 | 100 | $8,000–$25,000 |
| 9 x 12 | 108 | $8,700–$27,000 |
| 10 x 12 | 120 | $9,600–$30,000 |
| 11 x 12 | 132 | $10,500–$33,000 |
| 12 x 12 | 144 | $11,500–$36,000 |
| 13 x 15 | 195 | $15,600–$48,750 |
| 15 x 20 | 300 | $24,000–$75,000 |
| 20 x 20 | 400 | $32,000–$100,000 |
The cost to hire a home addition contractor near you to build a bedroom addition at your home will be about 10% to 20% of the total cost of the project. These pros will likely hire subcontractors for certain jobs, like running electricity and installing the HVAC system which can affect the overall cost. Here are some common prices for the type of work a general contractor will do for your bedroom addition:
Drywall installation: $1.50–$3 per square foot
Framing: $6–$10 per square foot
Roofing: $2–$3 per square foot
Siding: $3–$12 per square foot
Foundation: $5–$16 per square foot
Flooring: $3–$25 per square foot
You may also need an architect for an addition to design the space and work alongside the contractor to make your vision come to life. Architects account for about 5% of the total cost of the project. While the average cost to hire an architect is just over $6,600 for an addition, it may be more or less depending on the size and details of the project. Hiring an architect may be the right choice if you’re making significant structural changes or want a custom design.
It costs between $160 and $535 to hire an electrician for home projects. An electrician may charge by the hour, and their rate often falls between $50 and $100 per hour. Some jobs the electrician can do for a bedroom addition include:
Installing an outlet: $120–$300
Wiring for a ceiling fan: $2,000
Installing a light fixture: $70–$300
Installing a light switch: $100–$200
The average cost to add a bedroom to a house will vary greatly depending on where you live, as well. Below are average cost ranges for home additions in major cities across the U.S.:
| City | Cost |
|---|---|
| Oklahoma City, OK | $5,000 – $17,000 |
| Salt Lake City, UT | $14,000–$57,500 |
| Honolulu, HI | $17,000–$56,000 |
| Kansas City, MO | $17,000–$60,000 |
| Miami, FL | $15,000–$70,000 |
| Hartford, CT | $25,000–$85,000 |
| Seattle, WA | $24,000–$105,000 |
| Chicago, IL | $27,500–$100,000 |
| New York, NY | $26,500–$109,000 |
| Los Angeles, CA | $55,000–$129,500 |
If you’re planning a bedroom addition for your home, you should consider the additional cost factors that will influence the final cost of the project.
Permits: These will cost between $150 and $7,500, or an average of $1,700.
Insurance: Your insurance premiums will likely go up to cover the added value in the event of an insurance claim. Talk with your agent to understand this additional cost.
En Suite Bathroom: A full bathroom addition costs between $8,400 and $30,000, so if you decide to include a bathroom along with your bedroom addition, the price will be about double what it would be for a bedroom alone.
Interior Design: Interior designers cost $1,000 to $3,000 for a 200-square-foot space. Furniture and Decor: New furnishing and decor will cost between $3,000 and $10,000 for a bedroom addition.
If you’re taking existing space in your home that already has the proper windows and utilities to serve as a bedroom, and you’re just adding a closet and a door to make it private, you could feasibly do the work yourself and pay between $500 and $2,500 for materials. That includes the interior door, as well as framing lumber and sheetrock, which make up the cost of the closet addition. Your price will go up if you want to replace the flooring, add a fresh coat of paint, and add new bedroom furniture.
Aside from this simple conversion, we strongly recommend hiring a professional. A more involved bedroom addition is a complex job that requires a variety of professional skill sets and tools. Rather than taking this project on as a DIY, consider hiring a home addition contractor near you to handle demolition, construction, subcontractor hiring, and obtaining any required building permits.
[For a home addition], we charge piece-by-piece for the project, then we add our profit and overhead. For example, lumber for the project, permits, demolition, electrical, plumbing, and drywall. I add them up and then add our profit and overhead. On smaller jobs, we work by the hour and then add the material on top of that.
If you have existing space, consider a bedroom conversion to save money. According to the International Code Council (ICC), to comply with building codes, a bedroom must:
Be at least 70 square feet or at least 50 square feet per occupant if more than one person is using it.
Have access to a bathroom without having to pass through another bedroom.
Meet lighting, ventilation, ceiling height, and room width requirements.
Converting an existing room to a bedroom costs an average of $15,000, but ranges between $6,000 and $50,000.
There are a few things you can do to help keep your costs down when building a bedroom addition.
DIY: Tackling tasks like drywall installation, prep, and paint, installing baseboards, flooring, and light fixtures can save you thousands.
Affordable material: Whenever possible, opt for less high-end materials and furnishings.
Cleanup yourself: Haul away debris and put the finishing touches on yourself to save $250 to $1,200.
Convert over construct: If possible, convert an existing living space to a new bedroom rather than add new square footage. You could consider finishing an attic or a basement area.
According to the National Association of Realtors (NAR) 2022 Remodeling Impact Report, adding a primary bedroom has a 56% return on investment (ROI). In their example, a $172,500 primary bedroom would result in a $100,000 ROI. Adding a bedroom to your home can increase your resale value if it comes time to sell, as buyers would be attracted to the extra space.
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If you’re doing new construction, your bedroom addition will take about two to three months to complete. Conversions take less time because they don’t involve structural framing, so you could feasibly finish the project in just a few days. In either case, the extent of the work will play a big role in the time it takes, so adding a new bathroom and running utilities will take longer.
You can potentially save some time and money by carrying out other remodeling projects in your home at the same time as your bedroom. This includes converting unused rooms like your attic into living space, remodeling an existing kitchen or bathroom, installing a mudroom, and carpentry projects like creating built-in storage or wardrobes in other bedrooms. If your bedroom addition is for a family member with disabilities, consider other parts of your home that you can remodel with accessible features.
