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Top-Rated Addition to existing structure builders in Ashburn - Updated Nov 2026

Avatar for Munoz Construction LLC
Munoz Construction LLC
5.0(
240
)
Addition to Existing Structure - Build

Serving Ashburn, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Warranties offered

"Jose and his team remodeled our master bathroom. They removed the existing tile, tub, and shower and installed a walk in shower, They needed to move the plumbing for the shower and vanity, install a new tile floor, build the shower, install tile for the shower floors, walls, and two niches. They also, repaired all the walls and painted the entire room. Their craftsmanship on the tile work, drywall work, and painting is the best that I have seen. They did an incredible job. They were very professional. They arrived on time every day. Jose is an excellent communicator and took the time to explain any options throughout the project. They put protective material down on all the floors leading to the bathroom and setup a plastic barrier each day to contain the dust. At the end of every day, they cleaned up their work area so that the construction materials and tools were limited to the bathroom itself. We had compete access to the rest of the master bedroom. Very highly recommended and I would not hesitate to contract with Munoz Construction again."
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+13

1 neighbors recently requested a quote
Recommended by99%of homeowners
Avatar for Thomas Custom Builders Inc
Thomas Custom Builders Inc
4.8(
98
)
Addition to Existing Structure - Build

Serving Ashburn, VA and surrounding areas

Approved

In business since 2004

Free estimates

Warranties offered

"We're in process of getting bids on a deck/exterior office space remodel. They were very responsive to our initial request, and we talked to one of the owners of the company via phone and in person within 7 days of our outreach. The project is probably too small for their level of services, but we will definitely consider using them for a future, more complex interior home renovation. They were very nice and giving of their time and expertise, and their build process seems very professional and polished. We had an excellent experience with them."
Rec Room Reno | Clifton VA
Custom Kitchen & Addition | Fairfax VA
Kitchen, Bathroom & Addition | Arlington VA
Rec Room Reno | Clifton VA
Custom Kitchen & Addition | Fairfax VA

+188

Response time2 days
29 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for DreamMaker Bath & Kitchen
DreamMaker Bath & Kitchen
4.9(
32
)
Addition to Existing Structure - Build

Serving Ashburn, VA and surrounding areas

Approved

In business since 1983

Warranties offered

Credit card accepted

"We hired Steve Everett of DreamMaker Bath & Kitchen for two remodeling projects in 2012 and another in 2016. We happily award them an A rating. The first time we hired Steve Everett we asked him to remodel our master bathroom, a remnant of the late 1970s. Steve worked with us every step of the way. After carefully measuring the space available, he offered a number of options for how our bathroom might be renovated. Once we decided on the bathroom’s new configuration, styles and colors, Steve and his competent crew went to work. They immediately impressed us by employing large screens and tarps to protect our adjoining rooms and furniture. They took great care to keep dust and disruption to a minimum. Then, after painstaking preparation, they installed a beautiful tile shower and floor and a new cabinet and sink. The quality of their workmanship quickly became apparent as they worked toward project completion. Once complete, we were amazed at how different our upgraded bathroom looked and how DreamMaker made it so much more appealing. We also seemed to gain space, a direct result of Steve Everett’s more efficient design. We love our larger shower and feel much safer with the expanded floor space. After a wonderful first experience with DreamMaker, we again hired Steve Everett to remodel our second bathroom. This time we knew what to expect and we were not disappointed. Then, in 2016, we hired DreamMaker for a third project. We were confident DreamMaker could deliver and that is just what they did. Steve Everett and his DreamMaker crew successfully updated our 1970s era bathrooms bringing them into the 21st century. Not only do we now have renovated bathrooms to enjoy, but should we decide to sell our house one day, we will likely gain additional profit from our investments through DreamMaker Bath & Kitchen. In sum, Steve Everett of DreamMaker epitomizes the consummate professional contractor. Aside from being a skilled craftsman, he is an honest and fair businessman. He employs competent and talented workers and his prices are very reasonable. In short, we highly recommend DreamMaker Bath & Kitchen."
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After

+18

Response time2 days
Response rate100%
2 neighbors recently requested a quote
Avatar for MARVEL HOMES LLC
MARVEL HOMES LLC
4.9(
43
)
Addition to Existing Structure - Build

Serving Ashburn, VA and surrounding areas

Approved

In business since 2002

Warranties offered

Customers say: True professional

"
It went amazingly well.  We were worried about the disruption that would be caused by having our bathroom, which is attached to our bedroom, torn apart for several weeks, but Devin and his team could not have made it easier.  They put plastic sheeting over everything in our bedroom during the day during the demolition phase, and also rolled up our very large rug (and replaced it under our king-sized bed after they were done with the work).  They got everything done in the amount of time promised.  The crew were uniformly terrific -- nice, incredibly competent guys.   Devin was  great to work with.  Anything we wanted, he was able to figure out.  He could not have been more accommodating or helpful.  We've worked with a lot of great contractors over the years, and Devin is definitely a star.  Our bathroom designer, Debbie Gray, recommended him, and they worked together really well.  I have recommended the team to several friends already.  "
Before 2
After 2
Exterior
Exterior
Exterior

+8

1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for WaterStone Kitchen and Bath
WaterStone Kitchen and Bath
4.9(
46
)
Addition to Existing Structure - Build

Serving Ashburn, VA and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"We are so pleased with our kitchen renovation completed by WaterStone Kitchen and Bath. We didn’t know about them until a family friend recommended that we reach out to Jeff Thompson. We were in the midst of getting several bids and I didn’t know if I should get another. Oh my goodness. We are so happy that we did! During our first meeting, both Jeff and Deanna Llewellyn, his fantastic designer, met with us to look at our space, listen to our ideas and then they immediately started bouncing ideas off of one another. The out-of-the box thinking and design ideas were so welcomed! Jeff and Deanna proposed creating a walk-in pantry and making sure the lines in our kitchen were aligned. This hadn’t occurred to us and other companies hadn’t offered anything other than what we had proposed. Jeff and Deanna had us come into their office to see their proposal and drawings. We were so impressed and the space looked amazing in their drawings--two walls gone, a good sized walk-in pantry and lovely living space. Deanna immediately gave us ideas for cabinets and our island and they were exactly the color, offered the storage and presented the book shelves I was hoping for. We had a hard time containing our excitement. We feel their pricing was fair for the project they said they would be able to do. Their estimate was a little higher than our other bids but having gone with WaterStone, we feel they were worth the slightly higher price. Jeff even came up with ways where we could cut back on costs if we so chose. That was really helpful and gave us food for thought. Naturally we signed with them and they were able to do everything they promised in their designs! We intend to come back to Water Stone for future renovations. Jeff and his team came out right away to poke holes in walls and talk through his plans of moving plumbing and electrical components in our kitchen. They laid out a plan of attack and were able to start quickly and keep the renovation running, even during a pandemic. Luckily, we were able to move out during the renovation which I think helped the team get their work done more easily. Deanna was delightful to work with, always communicative and has wonderful taste. I knew I liked color and wanted to incorporate that into my granite, paint color and tiles. Once I had my granite selected, she helped to show me the best accents to go with it. She was also open to sourcing my pantry door from a new company that could provide frosted doors with interesting designs. I also found it helpful that she managed our expectations about timing as our renovation started right at the beginning of the pandemic. I would just love to work with Deanna again! Javier and his team who were assigned to our renovation were outstanding. Javier is incredibly talented and it’s amazing how much he can do. We were especially delighted when he was able to improve our pantry in several ways to allow us even more space. It’s fabulous! When we do another renovation, we would feel so lucky to get Javier and his team assigned to our home again. As with all renovations there are little bumps along the road and the only one we had for this renovation was when a batch of our new wood floors was a different tone from the other new boxes. Jeff immediately came out to look and the floor was fixed within days. Finally, it’s probably not many renovations where the “punch list” is almost non-existent but that was our renovation! My husband and I look at our open-space, beautiful kitchen and living area and can’t think of a single thing we would change. We feel spoiled by such a lovely experience, wonderful company, and genuinely nice people. We will absolutely come back to Water Stone when we want to renovate our home’s bathrooms. We hope that you consider Water Stone too--if you have anything near the experience we did, you’ll be beaming about your renovation as well!"
McMillan Bathroom
Spriggs Kitchen
Brandenstein Bathroom
Reston Bathroom 1
Reston Bathroom 2

+12

Response time8 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Manex Remodeling
Manex Remodeling
5.0(
28
)
Addition to Existing Structure - Build

Serving Ashburn, VA and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"I am thrilled with the complete master bath remodel and kitchen that Tony & his incredible crew from Manex recently completed in my home. It was a great experience from start to finish. This company truly works as a team, communication channels are all open. Even when a hiccup occurred…they addressed it immediately & moved forward. The crew was professional & positive…really a pleasure to have them in my home. Tony went above & beyond in every aspect including making sure I was not simply satisfied with the work but truly happy. I also want to thank his crew member Jimmy . He did an exceptional job & really kept the work site clean every day. I will absolutely use Manex remodeling again for future projects."
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+6

1 neighbors recently requested a quote
Recommended by74%of homeowners
Avatar for Before & After Home Improvement Co
Before & After Home Improvement Co
4.9(
31
)
Addition to Existing Structure - Build

Serving Ashburn, VA and surrounding areas

Approved

In business since 1976

Free estimates

Emergency services offered

"Five years ago Rick and his team had completed a full rehab of our deck and we love it. Recently, a material defect occurred and Rick stood by his work when the manufacturer would not. At his expense, he got new material and provided the same great carpenters, (Skip, Gary, and Heracio) as last time and made things right. I highly recommend their work and am happy to share their name with everyone who enjoys our deck. Check out the photos.Thank you again."
Deck - Retaining Walls - Arches
Trex Rain Escape Under Deck With Fans
Deck - Stairs Patio Firepit walls
Small Deck & Patio
Circle In Patio

+144

Response time8 hrs
1 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for D&G Remodeling
D&G Remodeling
5.0(
43
)
Addition to Existing Structure - Build

Serving Ashburn, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Warranties offered

"Excellent diagnosis of the work needed. Complete review of external meter and cable rigging needs, upgrade to new panel inside the house and corresponding grounding under the house (crawl space). Very reasonable pricing as well. I’ve hired D&G Remodeling for the work. The Lord is good! Thank you Angi!"
Electrical Project
kitchen remodel
VIENNA KITCHEN REMODEL
FORT WASHIMGTON KITCHEN
ALEXANDRIA  BATHROOM RENOVATION

+50

Response time10 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for Navid's Construction, Inc.
Navid's Construction, Inc.
4.7(
24
)
Addition to Existing Structure - Build

Serving Ashburn, VA and surrounding areas

Approved

Free estimates

Emergency services offered

Customers say: True professional

"I have used Navid's Construction for several projects at two homes we've owned. The first job required replacing front porch posts on a vintage, 1928 Sears Craftsman Bungalow. We were selling the home and needed to replace a rotting wooden structural porch post having architectural design features that I was adamant about replicating exactly as the original construction. Navid was able to completely reconstruct both posts with their added design features and do that work FLAWLESSLY!! I was incredibly pleased with the final results that he was able to accomplish within one day between him and his crew. This was all done, btw, within one week of closing with our buyer in advance of the sale of the home! A bit harrowing for me, but no problem for Navid! He also tackled reinforcing a joist and taking care of some termite damage. I engaged him again for another home of ours to reinforce a termite damaged joist and repair a 2nd floor drain. Success on all fronts. Total pro; use NAVID!!"
Before/After Bathroom Remodeling Project
Condo Renovation
Bathroom Remodeling
Building Bathroom in basement
Master bathroom Remodeling

+4

Recommended by55%of homeowners
Avatar for JW Home Improvement
JW Home Improvement
4.4(
5,749
)
Addition to Existing Structure - Build

Serving Ashburn, VA and surrounding areas

Approved (Corporate)

In business since 2001

Warranties offered

Credit card accepted

"I submitted a request. They called me within 24 hours to come out and provide an estimate. Clint came out to provide the estimate and took the time to explain everything. We scheduled the work to begin 2 days later. Alberto sent me a text message to let me know he was about 30 minutes away. He arrived on time to perform the services. Alberto and Javier fixed everything and cleaned up after themselves. The work area was spotless. I plan to hire them again for some additional work."
Additional Photos
CARPENTRY SERVICE
EXTERIOR PAINTING
KITCHEN REMODEL
Jesse Wertjes with Angie!

+8

15 neighbors recently requested a quote
Recommended by87%of homeowners
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FAQs for addition to existing structure building service projects in Ashburn, VA

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Ashburn, VA homeowners’ guide to addition to existing structure building services

From average costs to expert advice, get all the answers you need to get your job done.