How Much Does It Cost to Add a Bedroom and Bathroom? [2026 Data]

In 2026, the national average cost to add a bedroom and bathroom is $103,300. Most homeowners spend between $37,500 and $117,000, with final costs driven by room size, materials, and the type of bathroom you choose.

How Much Does a Bedroom and Bathroom Addition Cost by Bathroom Type?

Bathrooms cost significantly more to build than bedrooms, so the cost to add a bathroom will consume the largest share of your project budget. The type of bathroom you choose is the primary driver of that cost, with options ranging from a basic powder room ($5,000 on average) to a full luxury bath ($15,000 to $30,000+). A more elaborate bathroom delivers a higher-end experience and can strengthen your home's resale appeal. 

Here is how costs break down by bathroom type:

• Powder room addition: $5,000

• Half bathroom addition: $7,500

• Full bathroom addition: $10,000

• Luxury bathroom addition: $15,000–$30,000+

How Much Does a Primary Bedroom Suite Cost by Square Foot?

A bedroom and bathroom addition costs an average of $160 per square foot, with rates ranging from $80 to $220 per square foot depending on the features, finishes, and materials you select. A primary bedroom typically ranges from 200 to 400 square feet, while the bathroom can add another 50 to 200 square feet. Larger additions drive up both material and labor costs considerably. 

The table below breaks down estimated bedroom and bathroom addition costs by total square footage:

General Contractor Costs: What to Budget For

A general contractor manages your primary suite addition from start to finish—planning the build, hiring subcontractors, pulling permits, and ordering materials—and charges 10% to 25% of the overall budget, or $10,330 to $25,825 on average. Their coordination role covers a wide range of tasks that would otherwise fall on you to manage separately. Hiring a general contractor is especially valuable on a project this complex, where scheduling and sequencing mistakes can be costly.

Here are some common cost breakdowns when adding a bedroom or bathroom: 

• Hanging drywall: $2,100

• Installing interior doors: $800 each

• Installing windows: $1,200 each

• Laying flooring: $3,200

• Building a closet: $2,000

Electrician Costs: Hourly Rates and Common Jobs

The cost to hire an electrician for a bedroom and bathroom addition runs $50 to $130 per hour. An electrician is essential for bringing power to your new rooms, covering everything from lighting to outlets for appliances and devices. The total cost will depend on how many circuits, outlets, and fixtures your addition requires. Here is how electrical costs might break down when adding a bedroom or bathroom:

• Adding new electrical circuits: $700 each

• Installing outlets: $300 each

• Adding light fixtures: $500 each

• Installing a ceiling fan: $250

Plumber Costs: Hourly Rates and Fixture Work

Hiring a plumber costs $45 to $200 per hour, and plumbing work will make up a large portion of your overall addition budget. Adding a bathroom means running supply and drain lines for multiple fixtures, each with its own labor and material costs. The more fixtures your bathroom includes, the higher your plumbing costs will be. Here are some expected plumber costs when adding a bedroom and bathroom:

• Rough-in plumbing for a bathroom: $6,500

• Installing a toilet: $400

• Installing a sink: $450

• Installing a shower: $8,100

Additional Pros to Consider Hiring

In addition to hiring a general contractor, an electrician, and a plumber, you may need to bring on the following experts to build a bedroom and a bathroom.

• Architect: Fees for an architect will make up 1% to 8% of your total budget. An architect will help you plan your space and draw up those plans for your contractors, ensuring that the new bedroom and bathroom fit the flow of your home.

• Structural Engineer: Fees for a structural engineer will make up anywhere from 1% to 10% of your total project budget. Their role is to ensure that your room addition is stable and structurally sound.

• Interior Designer: The cost to hire an interior designer ranges from $2,100 to $14,700. You may opt to hire a designer to put the finishing touches on your primary suite, including permanent features, furnishings, colors, and décor.

Bedroom and Bathroom Addition Costs by State: Where They Vary Most

The cost to add a bedroom and bathroom varies meaningfully by state, driven by differences in labor rates, material costs, and local permitting requirements. Costs in your area may fall well above or below the national average, depending on where you live. The table below shows average addition costs across a range of states to help you gauge what to expect near you:

How Much Do Add-Ons Cost for a Bedroom and Bathroom Addition?

Beyond professional labor, several additional cost factors can affect your total budget for a primary bedroom and bathroom addition. Planning for these expenses upfront helps you avoid surprises once the project is underway.

Demolition and Prep

Demolition and prep for a bedroom and bathroom addition costs between $1.30 and $2 per square foot, covering the clearing of landscaping features before construction can begin. This step is required before any framing, foundation work, or utility installation can take place. Factoring this cost into your budget early prevents unexpected overruns once the project kicks off.

Permits

Building permits are required for any residential construction project, and a bedroom and bathroom addition is no exception, with an average permit cost of $900. The exact amount you pay will vary by municipality, so check with your local building department early in the planning process. Pulling permits ensures your addition is inspected and built to code, which protects both your investment and your ability to sell the home later.

Materials

Materials for a primary bedroom and bathroom addition span a wide range of items—from lumber, concrete, and siding to drywall, flooring, doors, windows, and electrical and plumbing equipment—and cost between $10,000 to $100,000, or $40,000 on average. The finishes and products you select will have the greatest impact on where your material costs land within that range. Choosing mid-range materials is a practical way to manage costs without sacrificing quality or durability.

Why You Should Hire a Home Addition Contractor

Adding a new bedroom and bath to your home is an exciting prospect. However, DIYers shouldn't tackle a project this large and complex, as even one small mistake can lead to serious problems down the road. For the best results, hire a home addition contractor near you who can produce professional results for a long-lasting build.

Here's why it's ideal to hire a home addition pro

Here are the benefits when you hire a home addition contractor for the job:

• Your contractor will complete several tasks that a homeowner cannot safely take on, including pouring a foundation, framing new rooms, running utilities, and more.

• A pro will handle the permitting process and ensure that everything is built in accordance with local building code.

• They will coordinate with the professionals who will participate in the project, including plumbers and electricians, and potentially an architect or structural engineer.

• You'll receive expert advice during the planning and design stages, allowing you to maximize your budget.

• You won't have to worry about making common DIY mistakes like not letting the foundation cure properly or making errors during electrical or plumbing work that will prevent you from passing inspections.

If you want to DIY a bedroom and bath addition

While you should leave the vast majority of the work to the pros, there are some simpler aspects of the project that you could potentially tackle as a DIYer:

• Installing the flooring, cabinets, and light fixtures

• Putting up the drywall and painting the walls

• Customizing your closet with built-in shelving

• Adding accessories like shower grab bars and towel racks

Primary Bedroom Suite Remodel vs. Renovation vs. Addition

When it comes to a large-scale project like a bedroom and bathroom addition, the terms remodel, renovation, and expansion each have different meanings. Before you talk to any pros, familiarize yourself with the definitions.

Primary Suite Remodel

A remodel is focused on transforming an existing space via changes to its layout or function. In a primary suite, this can include relocating plumbing, bumping out the square footage, adding or expanding a closet, and replacing cabinets, floors, and countertops.

Primary Suite Renovation

A remodel is focused on making a room look new via simpler projects that homeowners can often DIY. This can include refreshing paint jobs, refinishing cabinets, replacing plumbing hardware, and adding new furnishings.

Primary Suite Addition

An addition involves adding a completely new primary bedroom where there wasn't one previously. This is a highly involved project that requires pouring a new foundation, building out new framing and support structures, new siding, roofing, and walls, and running utilities like plumbing and electrical wiring.

How You Can Save Money While Adding a Bedroom and Bathroom to Your Home

Primary bedroom and bathroom home addition costs vary widely according to the scope of the project, so there's lots of room to save if you're trying to stay on or below a budget. Consider these tips:

• DIY some tasks: You may not be able to do more complex construction tasks, but simpler jobs like laying flooring, hanging drywall, and painting may be areas where you can save on labor.

• Choose more affordable materials: Lower-cost but quality material options can help you save. For example, opt for carpeting over hardwood flooring, choose budget-friendly plumbing fixtures, and thrift to find unique furnishings.

• Limit your square footage: On average, a primary bedroom suite costs $160 per square foot, so building a smaller space can save you thousands. Build only enough space to meet your needs.

• Get multiple quotes: Talk to more than one contractor so you can compare quotes and assess their qualifications. The right contractor will be one that is transparent and listens to your goals.

Does Adding a Bedroom and Bathroom Increase Home Value?

Adding a bedroom and bathroom significantly increases a home's value. Building a primary bedroom suite offers a 60% return on investment (ROI), so you'll recoup more than half the cost of your project when you sell your home. Additional living area not only helps a home sell faster in the future, but it makes the home more comfortable and functional while you still live there.

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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