The average U.S. homeowner spends $103,300 on a bedroom and bathroom addition, but costs can range from $37,500 to $117,000 depending on the scope of the project.
Whether you need extra space or want to add a little luxury, the cost to add a bedroom and bathroom can be worth it for the increase in home value. The average primary suite addition costs $103,300 or $160 per square foot. However, costs can range from $37,500 to $150,000 depending on room size and materials used.
Bathrooms are far more expensive to build on average than bedrooms, so expect the cost to add a bathroom to take up the majority of your project budget. Your costs will vary significantly depending on the type of bathroom you want for your addition. Costs per bathroom type break down as follows:
Powder room addition: $5,000
Half bathroom addition: $7,500
Full bathroom addition: $10,000
Luxury bathroom addition: $15,000–$30,000+
A bedroom and bathroom addition costs an average of $160 per square foot. This rate can range from $80 to $220 per square foot depending on the features you include and the finishes and materials you choose.
The footprint of a primary bedroom alone can range from 200 to 400 square feet. A primary bathroom can add another 50 to 200 square feet on top of that. Larger additions require higher material and labor costs, as detailed in the table below.
| Total Size (Square Feet) | Average Cost |
|---|---|
| 250 | $20,000–$55,000 |
| 300 | $24,000–$66,000 |
| 400 | $32,000–$88,000 |
| 460 | $36,800–$101,200 |
| 560 | $44,800–$123,200 |
| 600 | $48,000–$132,000 |
A general contractor is an expert who can manage your primary suite project by planning and scheduling the build, hiring other professionals, pulling permits, ordering materials, and more. This valuable service takes a lot off your plate, but also accounts for roughly 10% to 25% of the overall budget, or $10,330 to $25,825 on average.
Hanging drywall: $2,100
Installing interior doors: $800 each
Installing windows: $1,200 each
Laying flooring: $3,200
Building a closet: $2,000
The cost to hire an electrician for your project is $50 to $130 per hour. You'll need an electrician to bring power to your new room addition, including lighting and outlets for appliances and devices.
Adding new electrical circuits: $700 each
Installing outlets: $300 each
Adding light fixtures: $500 each
Installing a ceiling fan: $250
Adding a bathroom involves plumbing for several different fixtures which will make up a large portion of your overall budget. Hiring a plumber costs $45 to $200 per hour.
Rough-in plumbing for a bathroom: $6,500
Installing a toilet: $400
Installing a sink: $450
Installing a shower: $8,100
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.
The cost to add a bedroom and bathroom to your home will vary by state. The table below provides a look at costs in certain states to give you an idea of what to expect near you.
| Location | Average Cost |
|---|---|
| Alabama | $46,540 |
| California | $61,100 |
| Iowa | $84,200 |
| Kansas | $38,600 |
| Michigan | $75,100 |
| New York | $90,000 |
| Texas | $48,200 |
| Virginia | $52,300 |
Your budget for a new primary bedroom suite should account for the following factors in addition to professional labor.
Before construction can begin on your new bedroom and bathroom addition, the space must be completely cleared of landscaping features. Expect demolition and prep to cost between $1.30 and $2 per square foot.
Any residential construction project requires permits from your local building department. On average, you'll pay $900, though this will vary by municipality.
A primary bedroom requires a wide range of materials, from lumber for framing and support to a concrete foundation, siding, roofing, drywall, paint, doors, windows, electrical and plumbing equipment, and flooring. Expect to pay anywhere from $10,000 to $100,000 on materials alone, or $40,000 on average.
We don't recommend taking on large-scale projects like the addition of a bedroom and bathroom yourself. This type of job involves several complex tasks that include pouring a foundation, framing the new rooms, running utilities, and more.
Instead, it's better to hire a home addition company near you to ensure that your vision matches the results you get. You'll likely spend somewhere between $10,000 and $26,000 on labor fees and $103,300 in total. That said, you could stand to save by tackling some simpler tasks on your own. This could include painting, installing light fixtures, and laying flooring.
[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.
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.
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.
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.
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.
| Primary Suite Remodel | Primary Suite Renovation | Primary Suite Addition |
|---|---|---|
| Change bedroom or bathroom layout | Restore space to look new | Add rooms to increase a home's square footage |
| Significant updates to look and functionality without structural changes | Layout stays the same, with focus on repairs and replacements | Requires several pros to accomplish different tasks |
| Costs are moderate | Costs are low | Costs are high |
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.
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.
It is less expensive to build up than it is to add a bedroom or a bath if you want to increase your home's square footage. This is because it requires less material and labor to do so. Adding a second story only requires additional framing and structure without the need for a new foundation or space on a property.
The most expensive part of a home addition tends to be the foundation and framing. However, when it comes to adding a bathroom, another significant cost is the plumbing. This includes not only connecting and running plumbing from your existing system to the new space, but also building out tubs or showers, which are among the costliest materials in home remodeling.
