Basement remodel costs depend on your project and location. Check with a local pro for your specific job.
Remodeling a basement in Washington, DC costs $24,169 on average, depending on the project size.
Your final price depends heavily on the room size, structural changes, and the quality of finishes.
Budgeting for a new bathroom addition increases your total project expenses by $7,190 to $18,000.
Hiring a local basement remodeling pro in Washington, DC provides reliable help with basement remodeling and saves you time.
This article was created using automation technology and thoroughly fact-checked and edited by an Angi Editor in accordance with our AI policy.
A basement remodel in Washington, DC, runs $24,169 on average, and ranges from $13,590 to $34,993. Your total price depends on the square footage, the quality of your chosen materials, any necessary plumbing additions, and local labor rates. Before starting your project, understanding these costs helps you plan a beautiful new living space that fits your home and budget.
In Washington, DC, transforming an unfinished lower level into a comfortable living space requires careful budgeting and planning. A local basement remodeling pro helps navigate the specific structural and material requirements that determine your final project price.
The total square footage of your lower level dictates the amount of materials and labor required for the project. Larger spaces demand more framing, drywall, and flooring, which steadily increases your overall investment.
| Basement Size | Average Square Footage | Local Average Cost | National Average Cost |
|---|---|---|---|
| Small basement | 300–700 | $7,080–$17,700 | $6,500–$16,200 |
| Medium basement | 700–1,500 | $18,600–$26,200 | $17,000–$24,000 |
| Large basement | 1,500–2,000 | $22,900–$37,100 | $21,000–$34,000 |
| Oversized basement | 2,000–4,000 | $32,700–$81,700 | $30,000–$75,000 |
Remodeling a small basement between 300 and 700 square feet runs from $7,080 to $17,700 per project. If you have an oversized basement up to 4,000 square feet, expect to pay between $32,700 and $81,700 per project. Across all sizes in Washington, DC, homeowners spend an average of $24,169 per project to finish their basements, with most project totals falling between $13,590 and $34,993.
The specific rooms and amenities you add to your layout significantly impact your final bill. High-end additions require specialized plumbing, electrical work, and custom finishes.
| Feature | Local Average Cost | National Average Cost |
| --- | --- | --- |
| Bedroom | $3,270–$10,900 | $3,000–$10,000 |
| Bathroom | $7,190–$18,000 | $6,600–$16,500 |
| Bar | $875–$24,600 | $800–$22,500 |
| Wine cellar | $5,450–$108,900 | $5,000–$100,000 |
| Home gym | $330–$16,400 | $300–$15,000 |
| Home theater | $10,900–$65,400 | $10,000–$60,000 |
| Home office | $1,640–$1,310 | $1,500–$12,00 |
| Game room | $3,270–$19,700 | $3,000–$18,000 |
Adding a bathroom to your layout costs between $7,190 and $18,000 per project, as it requires extensive plumbing installation. Building a home theater ranges from $10,900 to $65,400 per project, depending on the acoustic treatments and electrical upgrades you choose. When planning these upgrades in Washington, DC, keep in mind that complex features push your total toward the higher end of the $34,993 per project average maximum.
Building the skeletal structure of your new rooms establishes the layout and provides support for drywall. The price of lumber and the complexity of your floor plan drive this expense.
Framing an unfinished space requires professional carpentry to ensure all walls are perfectly plumb and secure. You need sturdy framing to support the room's infrastructure, and this step sets the stage for a smooth drywall installation process.
Proper thermal barriers keep your new living space comfortable and energy-efficient year-round. The type of material you select and the total wall area determine your insulation expenses.
In Washington, DC, the hot, muggy summers and cold, snowy winters make high-quality insulation essential for regulating basement temperatures. Installing fiberglass batts or spray foam prevents drafts and reduces your monthly utility bills.
Hanging and finishing wallboard transforms exposed studs into smooth, paint-ready walls. The thickness of the panels and the level of finish you require dictate the final price.
We recommend moisture-resistant drywall for below-ground spaces to prevent deterioration. Factoring in the drywall installation price helps you budget accurately for this crucial phase of the build.
The materials you choose to cover your concrete slab affect both the aesthetic appeal and the durability of the room. Luxury vinyl plank, tile, and carpet all carry different material and installation rates.
Below-grade environments require flooring that withstands potential dampness. Selecting waterproof materials ensures your investment lasts for years without warping or buckling.
Applying primer and paint provides the final decorative touch to your newly constructed walls and ceilings. The total surface area and the quality of the paint influence this cost.
Professional painters ensure crisp lines and even coverage across your entire basement. Budgeting for interior painting costs guarantees a flawless finish that brightens up the windowless space.
Discovering fungal growth during demolition requires immediate remediation to protect your home's air quality. The severity of the infestation and the size of the affected area determine the cleanup expenses.
The extreme humidity in Washington, DC creates an environment where mold thrives in poorly ventilated basements. Professional mold remediation eliminates the hazard completely before you install new materials over the affected zones.
Older homes often contain hazardous materials in original floor tiles or pipe insulation that must be safely extracted. Specialized abatement procedures require certified professionals, which adds to your project total.
Testing for and removing these materials prevents dangerous fibers from circulating through your HVAC system. Abatement teams follow strict containment protocols to keep your property safe during the renovation.
Sealing your foundation against moisture intrusion is a mandatory step before finishing any below-ground space. The method used, from interior sealants to exterior French drains, dictates the price.
Heavy rainstorms and flooding risks make robust moisture control non-negotiable for your project. Investing in basement waterproofing protects your new drywall, flooring, and furniture from devastating water damage.
Fixing structural cracks or bowing walls ensures your home remains stable and safe. The extent of the damage and the required engineering solutions drive these repair costs.
Contractors must address any structural weaknesses before framing begins to prevent future shifting. Completing necessary foundation repair secures the base of your home and preserves the integrity of your entire remodel.
Hiring a professional for your project in Washington, DC, ensures your new living space meets all structural requirements. When budgeting for specific additions, contractors charge per-unit rates based on the room type. For example, adding a new bedroom costs between $3,270 and $10,900. We recommend factoring the local 6.00% sales tax on building materials into your total budget. Working with a local pro helps you navigate these expenses seamlessly and keeps your home safe and sound.
Before starting a basement remodel, confirm whether your project requires permits in your area and who is responsible for obtaining them. Permit requirements and costs vary by location, but most basement remodel permits range from $500 to $2,000, depending on the scope of work and your local municipality. Working without the proper permits can lead to fines, project delays, or complications when selling your home. If you're hiring a basement remodeling professional, review your contract to ensure they will handle the permitting process and inspections. To verify permit requirements, visit your city or county's official building department website for the most accurate and up-to-date information.
Hiring a basement remodeling pro in Washington, DC guarantees a safe work environment while saving you significant time and maximizing your property's overall value.
* Contractors possess specialized expertise to manage complex plumbing and electrical rerouting.
* Professionals source high-quality, moisture-resistant materials designed specifically for below-ground environments.
* A dedicated crew coordinates seamlessly with subcontractors to keep your project on schedule.
* Experts resolve hidden foundation issues before installing new drywall or flooring.
Nationally, a basement remodel offers a return on investment of around 70%, making it a rewarding project for your property. When you live in Washington, DC, finishing or updating your lower level adds distinct appeal to your home. The local housing market is competitive, and usable square footage comes at a premium. Transforming an unfinished basement into a home office, guest suite, or entertainment space gives your home a significant edge with buyers. The Mid-Atlantic climate brings humid summers and damp winters, so a properly waterproofed and insulated basement provides a comfortable, year-round retreat. By investing in a basement remodel, you protect your foundation from regional weather wear while maximizing your functional living space. We recommend looking at this project as a smart way to upgrade your daily life and boost your property’s market appeal. Consider the long-term value a beautifully remodeled basement brings to your Washington, DC home.
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’ve surveyed thousands of real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from 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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First project—front entrance, concrete steps and border. Project went so well we hired them for kitchen remodel. Received great guidance in what would make kitchen look good and maximize our budget. Highly recommend this company for your home improvement needs.
Riveras Construction LLCWe had a significant mold issue and water damage. Our entire basement had to be redone. My experience with Masterworks and its owner Mike, was outstanding! Mike and his crew communicated with me throughout and explained the tradecraft so that I understood each part of the remodel. I made all...
MASTERWORKS PAINTING AND REMODELINGI recently worked with Next Level Remodeling on a kitchen renovation, and I couldn?t be happier with the results! From the start, their team was professional, attentive, and truly understood my vision. The design process was smooth, with helpful suggestions that improved both functionality...
Next Level Remodeling, LLCFelix and and his crew are well versed in all aspects of remodeling. Felix renovated a 4 story house for us
I really enjoyed my experience with Basement Remodeling. I love my newly constructed basement apartment. They are very organized, deliver quality work and can quickly respond to and remedy any issues that may occur. Eric, Gheorghe and Shanae were a pleasure to work with. I highly recommend...
BasementRemodeling.comOur Basement Project was done in a very Professional and Timely manner.. * The Contractor (JORGE) and all of his helpers were Excellent and very Helpful..*They did a fantastic Job.. I highly recommend "Builders XLT".. (Thankyou)
Builders XLTMy experience with Remodel Washington DC was wonderful! Alex, Svetlana, and their project teams were flexible and accommodating to my changes and schedule. They remodeled my downstairs including installing maple hardwood floors, a powder bathroom, and a kitchen with maple cabinets/appliances,...
Remodel Washington DCGreat service highly recommended . Would definitely use again thank you so much for repairing my basement
A1 Masonry ContractorsFully remodeled 3bed 1 bath home into 3bed 1 and 1/2 bath. New roof, new HVAC unit. New kitchen and added a half bathroom to the main level. Also converted the basement into a 1bed, 1bath, full size w/d, kitchen etc. The remodel was a success. I am pleased with the outcome. Elite home is...
Elite Home Remodeling GroupI bought a fixer upper and thanks to this team, we were able to remodel the entire house, add an addition to the living space and completely change the feel of the home. Working with Scott & his team changed the way I look at remodeling a home because they made the process so smooth and...
Abode Construction, LLCFrom average costs to expert advice, get all the answers you need to get your job done.
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