Home Additions in the DMV
Your family needs more space, but you love your neighborhood. A well-designed home addition gives you the square footage you need without the upheaval of moving. We design and build additions that integrate seamlessly with your existing home, structurally and aesthetically.
- Serving the D.C. Metro Area for Over 10 Years
- Best of Houzz Winner 2016–2025
See Our Addition Projects
We’ve completed home additions throughout Northern Virginia, Maryland, and D.C. Each project is designed to look like it was always part of the original home.
Why Boss Design Center
Design-Build Under One Roof
We handle both design and construction. No coordinating between separate parties, no finger-pointing when questions arise. One team from concept to completion.
Transparent Fixed-Rate Pricing
Before construction begins, you’ll know exactly what your addition will cost. We don’t use allowances or estimate-based pricing. The price we quote is the price you pay.
Your Designer Stays With You
The designer who creates your vision stays involved through project completion. You won’t be handed off from salesperson to designer to project manager.
What Our Clients Say
"Construction process was smooth, much quicker than anticipated, and the crew was extremely skillful with expertise in all aspects of the work—carpentry, plumbing, electrical, and tile. We are extremely happy with the end result—the kitchen is bright and feels bigger than we had anticipated."
"When Talha came over for his initial meeting, he didn't immediately ask about our budget like everyone else. He just listened to what we wanted. The renderings he created were so accurate—what we saw in the pictures is exactly what we got. Every single day when we walk into this kitchen, we smile."
"What stood out about Boss Design was that they weren't just contractors—they were designers first. The kitchen they created for us is exactly what we wanted, with plenty of cabinet space and better flow than we thought possible. They finished on time and on budget. Having one company handle everything made such a difference."
How Your Addition Comes Together
Every addition follows a clear path from initial vision to completed construction. No surprises, no guesswork. Here’s what to expect when you work with us.
Initial Vision & Home Meeting
We visit your home to discuss your space needs, budget, and design goals. We assess the property and identify opportunities for your addition.
Custom Design & 3D Renderings
We create photorealistic 3D renderings showing exactly how your addition will look and connect to your existing home. Every detail is selected before construction begins.
Permitting & Project Preparation
We handle all permit applications, zoning compliance, and HOA approvals. You'll meet your project manager and review the construction schedule.
Construction With Weekly Updates
Our team builds your addition with weekly progress meetings. You'll have real-time updates through our online project management system.
Final Walkthrough & Completion
We complete a comprehensive review and address any punch list items before the project is considered complete.
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Types of Additions We Build
From extra bedrooms to expanded kitchen space or a new primary bathroom, we design additions that serve your family’s specific needs.
Bedroom & Room Additions
Screened Porch Additions
Second-Story Additions
Garage & Storage Additions
Sunrooms & Three-Season Rooms
Kitchen Space Expansions
Coastal-Inspired Kitchens
French-Inspired Kitchens
Licensed, Insured, and Award-Winning
Boss Design Center holds contractor licenses in Virginia (Class A), Maryland, and Washington D.C. We’re fully bonded and insured with comprehensive liability and workers compensation coverage. We’re members of the NKBA and ProRemodeler Atlantic.
- Best of Houzz 2016-2025
- BBB A+ Rating
- NKBA Member
Every addition includes a 5-year warranty on structural work and a 1-year warranty on all other aspects of your renovation. We stand behind what we build and remain available for questions even after your warranty expires.
Frequently Asked Questions
Yes, most homeowners remain in their homes during the addition process. We implement protection measures for the rest of your home, maintain daily cleanup, and keep the construction area contained. We’ll discuss strategies to minimize disruption to your daily routine during the planning phase. Your project manager will give you advance notice of particularly noisy or disruptive work.
Seamless integration is central to our design philosophy. We match or complement your existing architecture with coordinated roof lines, exterior finishes, and interior design. The goal is for your addition to look like it was always part of your home. During the design phase, you’ll see photorealistic renderings showing exactly how the new space connects to your existing structure.
We obtain and manage all necessary permits for your project—building, electrical, plumbing, and any others required. We also handle zoning compliance verification and can assist with HOA approvals if applicable. You don’t need to coordinate with any government offices or building departments.
Everything from design services and permits to foundation work, framing, systems installation, interior finishing, and final cleanup. Every material, fixture, and finish is selected before construction begins, which is how we can guarantee your final price. The only situations where costs change are structural issues discovered after demolition or scope additions you request.
Timelines vary based on the size and complexity of your addition. The design phase typically takes 1–2 months, followed by 4–6 weeks for permitting and scheduling. Construction duration depends on your specific project scope. During your initial consultation, we’ll provide a realistic timeline for your addition.
Yes. This is one of the most important aspects of our boutique service model. The designer you meet initially, who creates your vision and understands your preferences, stays involved throughout your entire project. You develop a relationship with someone who knows your project intimately from day one through final completion.
That’s perfectly fine. Many of our clients come to us uncertain about the specifics. We excel at helping you discover and clarify your vision through conversation, exploring inspiration images, and visiting our showroom. Our initial consultation is designed to help you understand what’s possible within your budget and property constraints.
Adding on lets you stay in the neighborhood you love, keep your children in their schools, and maintain proximity to work. You avoid real estate commissions, moving expenses, and the stress of settling into an unfamiliar area. Plus, you get to create exactly the space you need rather than compromising on someone else’s floor plan. If you need changes throughout your home, we also offer whole-house remodeling services.
Areas We Serve
Washington DC | Arlington VA | Alexandria VA | McLean VA | Falls Church VA | Fairfax VA | Tysons VA | Reston VA | Bethesda MD | Rockville MD | Silver Spring MD | Chevy Chase MD | Potomac MD | Gaithersburg MD | Germantown MD | College Park MD | Hyattsville MD | Kensington MD