How Much Does a Bedroom Addition Cost?

Bedroom Addition Cost by Room Size

You’ll pay between $80 and $250 per square foot for your bedroom addition, with the lower end being more accurate for converting existing space to a bedroom and the higher end for building a home addition to add living space. Building a primary bedroom with a bathroom addition costs the most because you need a larger footprint, plus plumbing and more costly finishes for the bathroom space.

Home Addition Contractor Costs

Labor accounts for an average of 40% to 60% of the total, and most of that will go toward hiring a home addition contractor near you. These pros may hire subcontractors for certain jobs, like running electricity and installing the HVAC system, which can affect the overall cost, but they’ll carry out most of the construction and finishing work themselves. Here are some common prices for the type of work a home addition contractor will do for your bedroom addition: 

• Drywall installation: $1.50–$3 per sq. ft.

• Framing: $7–$16 per sq. ft.

• Roofing: $4–$11 per sq. ft.

• Siding: $3–$12 per sq. ft.

• Foundation: $5–$16 per sq. ft.

• Flooring: $2–$25 per sq. ft.

Architect Costs

You may also need an architect for a home 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.

• Drawing up blueprints: $500–$2,000

• Creating as-built drawings: $700–$1,300

• Custom design services: $1,000–$5,000

Electrician Costs

Electricians often charge by the hour, and their rate falls between $50 and $130 per hour. They may charge a flat rate of between $250 and $600 for the work involved in adding a bedroom to your home. Some jobs the electrician can do for a bedroom addition include:

• Installing an outlet: $100–$450

• Wiring for a ceiling fan: $145–$350

• Installing a light fixture: $150–$1,000

• Installing a light switch: $60–$300

Cost by Location 

The average cost to add a bedroom to a house will vary greatly depending on where you live, as well. This is largely because labor costs scale with the cost of living, so more expensive areas will come with higher costs for each aspect of your home addition. Below are average cost ranges for home additions in major cities across the U.S.:

Additional Cost Factors

A bedroom addition costs anywhere from $8,000 to $100,000, and the cost range is so wide because many other factors can affect your total.

Permits

Major construction that’s considered a permanent improvement and adds living space will always need permits, but even converting existing space to a bedroom will require permits to ensure the space is safe to use as a bedroom. Permits for a bedroom addition cost between $250 and $2,000, depending on the type of home addition you’re aiming for, the size, and your local building department’s fee schedule.

Insurance

Adding living space to your home will boost the value, and your homeowner’s insurance premium could go up as a result. The exact increase will depend on your existing home value, the added value, and your insurer, so speak with your representative to get an idea of what the change will be.

Design Complexity

The complexity of your design can have a major impact on your costs. A simple, rectangular room that doesn’t require any custom architectural work and just needs a simple stamp of approval from a structural engineer will save you money over a fully custom design. Some professional contractors who build home additions may be able to expedite the timeline for your home addition by offering pre-approved building plans that just require finalized permits.

Finishes

The finishes you choose for your new bedroom addition play an important part in determining your total build costs. You can save thousands of dollars by choosing more affordable materials, like carpeting over hardwood flooring to save an average of $10 per square foot, asphalt roofing over metal to save an average of $12 per square foot, and budget-friendly drywall over custom tiled walls in your ensuite bathroom to save an average of $1,500.

Adding an En Suite Bathroom

Adding a simple bedroom to your home that just requires electricity and a tie-in to your existing heating system will help keep costs low. Your total could increase by 10% to 15%—an average of between $7,500 and $15,000 if you need a more complex design that includes an ensuite bathroom. The more complex build will require plumbing in addition to other utility connections, as well as more expensive materials to build out your bathroom.

DIY Bedroom Additions vs. Hiring a Pro

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 partitioning walls, 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, but you’ll still save thousands on labor.

Aside from this simple conversion, you’ll need to hire a professional to get the job done. A more involved bedroom addition that includes building a new structure is a complex job that requires a variety of professional skill sets and tools. DIY construction is unsafe and often illegal. 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. You can always tackle some of the finishes yourself to save money.

Bedroom Conversion vs. Bedroom Addition

If you have existing space in your home that you can convert, consider a bedroom conversion over a bedroom addition to save money. You’ll pay closer to $20,000 for a simple conversion, whereas building a new structure as an add-on can push your total closer to $80,000.

According to the International Code Council (ICC), to comply with building codes, a bedroom must meet some specific criteria, so be sure to review the following before deciding on a conversion.

• 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.

• Homeowners must have access to a bathroom without having to pass through another bedroom.

• Bedrooms must meet lighting, outlet and switch placement, ventilation, ceiling height, and room width requirements that apply to other living areas.

Lastly, consider that converting existing living space to a bedroom doesn’t add square footage to your home, so your ROI will be lower, and you’ll be more restricted in your design than if you built a home addition for the bedroom.

How to Save Money While Adding a Bedroom Onto a House

There are a few things you can do to help keep your costs down when building a bedroom addition.

• DIY what you can: Tackling tasks like drywall installation, spackling, painting, installing baseboards, laying flooring, and connecting light fixtures can save you thousands.

• Choose affordable materials: Whenever possible, opt for more budget-friendly 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 to accommodate an additional bedroom.

Does a Bedroom Addition Increase Home Value?

Adding a bedroom to your home will add value in most cases, especially if you build a home addition to add square footage and house the new room. According to the National Association of Realtors (NAR) 2025 Remodeling Impact Report, adding a primary bedroom and bathroom provides a 54%(ROI).

You’ll see an even higher ROI if your current home has just two bedrooms, which is considered a functional obsolescence. In that case, adding a bump-out for a third bedroom could provide an ROI of 70% or more.

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We extensively research project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We rely on reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

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