How Much Does a Mudroom Addition Cost? [2025 Data]

A mudroom addition costs between $6,500 and $18,000, with a national average of $12,000. This cost breaks down to between $100 and $300 per square foot. The total cost of your project will depend on how big the mudroom is and the customizations you choose, as well as the quality of the materials you pick.

Mudroom Addition Cost by Size

The size of your mudroom is the most significant cost factor of the project. You can expect to pay between $100 and $300 per square foot. Since mudrooms are relatively small, coming in around 120 square feet or less, the total cost will be lower than if you were adding a large primary suite or a dining room addition. Converting an existing space to a mudroom could cost between $50 and $100 per square foot.

General Contractor Costs

Unless you’re completing a simple conversion of existing space, you’ll need to hire a home addition contractor near you to handle the work. They’ll be able to put down a foundation, frame the room, install the siding and roofing, and finish the room with insulation, drywall, flooring, and whatever customizations you choose. General contractors charge an additional 10% to 20% of the project's total cost. So, if your mudroom addition costs $12,000, the contractor fees will be between $1,200 and $2,400.

Here are some individual projects your contractor will handle for your mudroom addition, plus average prices

• 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–$12 per sq. ft.

• Flooring: $3–$25 per sq. ft.

Electrician Costs

Hiring an electrician costs between $50 and $130 per hour, but for larger projects like mudroom installation, your pro may charge a flat fee or set prices based on the number of fixtures and outlets you need them to install.

• Cost per outlet: $200–$300

• Cost per light fixture: $150–$6,000 (including materials)

• Cost per light switch: $85–$200

• Cost to install a ceiling fan: $150–$350

Plumber Costs

You may not need to hire a plumber at all if you just want a dedicated space to leave boots, shoes, keys, and jackets, but adding plumbing to your mudroom may drive up your total. Adding a utility sink, for example, will cost between $200 and $500 and could give you a convenient place to wash off muddy boots. Installing a pet washing station is another high-end option you may want to consider, but this will cost $1,000 to $2,000. A simple hose bib installation will run you $150 to $500.

Cost by Location

The location you decide to install your mudroom in your home can have an effect on pricing, too. It’s most affordable to build where there’s already an exterior door and a foundation, like just outside the door leading into your garage or on an existing porch or deck. Pricing will increase if you need to pour a foundation for the bump-out and open up the exterior wall to install a door leading into your home.

Additional Cost Factors

Ultimately, how much it costs to build a mudroom will depend on a few factors, so be sure to consider all of the following to get an accurate estimate.

Foundation and Exterior Building Materials

Pouring a new foundation for your mudroom will cost between $1,000 and $5,000, depending on the size, so you’ll see this added line item if you’re building a bump-out for your mudroom. In that case, you’ll also pay an additional $3,000 to $8,000 for exterior building materials and construction, including framing, siding, and roofing. You can skip most of these costs if you convert an existing space, like part of your garage, to a mudroom instead.

Post-Construction Clean Up

Some contractors may not include a clean-up after they complete the construction, so you may need to pay more for this service. This could include removing excess building materials, returning your yard to its former status if you have a new mudroom foundation poured, or creating a smooth transition between your mudroom and your living space.

Depending on the work you need done, a clean-up service could cost between $100 and $1,000. Keep in mind that some contractors may include some of these line items in their original estimates. You can also ask your contractor if you can do the clean up on your own to save some money on the final cost.

Built-In Storage

What is a mudroom without built-in storage? If you really want to get your space looking professional, clean, and organized, you might want to consider built-in storage, like cabinets, drawers, or shelving.

DIY mudroom lockers could save you some money on labor, but materials will still cost around $500 for a professional-looking set-up. Having the same work done by your mudroom expert could cost between $1,000 and $1,250.

Flooring

If there’s one area you don’t want to skimp on when building an entryway into your home, it’s the mudroom flooring. The floors in your mudroom will see a lot of foot traffic, rain, snow, leaves, dirt, sand, and more. You could spend $100 installing simple vinyl tiles, but it’s best to go with a more durable ceramic tile or luxury vinyl plank floor. These will cost between $300 and $2,400 for a standard 120-square-foot mudroom.

Higher-quality, waterproof floors that are easy to clean will stand up to the use they’re sure to see in a mudroom, and they’ll make your cleaning protocol a whole lot easier.

Painting

The cost to paint a mudroom will depend on the size of the space and the complexity of the work, but the average costs sit between $250 and $750 for an average mudroom. You can expect to spend between $2 and $6 per square foot you need painted. Keep in mind that this total can be a bit lower than your total square footage, as built-in lockers and shiplap are common in mudrooms and can cover up portions that would otherwise need painting.

Fit and Finish

The finishing touches you want after the primary construction of your mudroom will play a major role in your costs. If you want to build custom mudroom lockers and built-in storage and fit the space with waterproof flooring and decor, your price will be much higher than if you just go with the basics.

Depending on your mudroom ideas and who does the work, you could pay as little as $300 or as much as $7,500 to finish your mudroom according to your storage needs and personalized preferences.

Mudroom Customizations

Mudrooms are utilitarian in nature, serving as storage areas and a place to take off and put on shoes, boots, coats, and other outdoor wear without getting your living space dirty. However, lots of homeowners deck out their mudrooms to make them more visually appealing and add additional utility to the areas, making them the perfect drop zone for the house.

Customizations are, of course, custom, so pricing will vary widely, depending on what you want to add to your new space.

Permits

Finally, you’ll likely need building permits if you’re framing out a new mudroom in an existing living space, and you’ll definitely need them if you’re having a professional build a mudroom bump-out on your home.

Building permits vary widely depending on your location and your local building department, but permits for mudrooms will cost between $125 and $1,000, with an average cost of $250.

Mudroom Addition vs. Conversion

Building a mudroom addition is always going to be more expensive because you’ll be paying to pour a new foundation, erect walls, and “dry-in” the space with siding and roofing. On average, building a new structure to house a mudroom will cost between $18,000 and $36,000, while converting an existing space to a mudroom will cost just $3,000 to $10,000. Just keep in mind that converting an area in your living room or entryway will take away from your usable living space.

DIY Building a Mudroom vs. Hiring a Pro

You can save between $1,000 and $7,000 by building your mudroom yourself over hiring a pro. However, a DIY mudroom is only feasible if you’re converting an existing closet or cabinet and don’t need to make changes to your plumbing or electrical systems to meet your needs. Most homeowners can tackle building custom shelving and organizational equipment. Experienced DIYers could even frame out an area of their homes for a mudroom. 

However, if you want a dedicated home bump-out built for your mudroom or you want new plumbing connections, outlets, or light fixtures in the space, you’ll need to hire a professional who builds home additions and can tackle changes to utilities. They have the skills and tools to do the job to your liking—and on schedule.

Ways to Save Money on a Mudroom Addition

There are a few ways besides DIYing to save money on your mudroom addition costs.

• Build inside an existing space. Building a mudroom in a garage, a screened-in porch, or an existing closet will cost around 50% less than building a bump-out.

• Go small. Avoid oversizing your mudroom, as mudroom additions can cost up to $300 per additional square foot.

• Consider future expansions. If you want plumbing or electrical hookups for a laundry area, utility sink, or dog shower station, have the utilities roughed in now. You’ll spend money upfront but will save down the road by not having to demo and rebuild to add square footage.

• Don’t cut corners on flooring. It’s better to pay a premium for a high-quality, durable, waterproof floor. You’ll spend more upfront, but you won’t have to take the time or money to replace flooring that wears down more quickly over time in your high-traffic mudroom.

Does a Mudroom Addition Increase Home Value?

Adding a mudroom often increases the value of your home, but there are some exceptions. For the most part, adding a mudroom adds some additional utility to your property and helps protect building materials in your living area, especially your flooring, which can add value.

However, taking away living space to build a mudroom might not be beneficial from a property value perspective. If you build a mudroom in a garage, an existing closet, or a screened-in porch, though, your home value will almost certainly go up, and home additions will almost always increase property value, too.

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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