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

Avatar for Thomas Custom Builders Inc
Thomas Custom Builders Inc
4.8(
98
)
Addition to Existing Structure - Build

Serving Great Falls, VA and surrounding areas

Approved

In business since 2004

Free estimates

Warranties offered

"We are extremely happy with the work done by Thomas Custom Builders (TCB). Overall they did an amazing and outstanding job! They had a contractor on site, on time every day. Brian S. was professional, helpful, patient, hard working and skilled both in managing subcontractors and doing work himself. I trusted him with our home and would work with Brian/TCB again easily. I have already recommended their company to others. TCB renovated a few parts of our house, added electricity to a shed and added an entire master bedroom suite on an additional floor (adding approximately 550 sqft to our house). They finished earlier than expected. Our neighbors couldn't believe how fast the addition was completed and how well done. Any additional costs from the original budget estimate were due to our choice to add more work. I waited to write a review. I wanted to live in the addition for a little while to see how everything holds up. We have had only minor things arise and have been very pleased with the responsiveness of Brian and TCB to come back out and check on things. They came back to add a bracket to a new countertop that moved slightly, they shaved a door that was sticking as the weather changed, they fixed the damage done when carpets were installed by another company, they arranged for a rep from the hot water heater company to come out and fix a noise issue, all done at no additional cost to us. I have worked with contractors before but nothing on this level. It wasn't perfect, there were concerns that came up. I had to learn that this was major construction and with major construction comes mess. Brian and his team addressed our concerns and remedied any issue fairly. With so many negative stories I've heard from people who worked with other companies, I am so very thankful that we had such a good experience and ended up with such an amazing master suite and changes to our home. We love it and we receive many compliments. We chose to work with TCB because they came highly recommended by a neighbor who had similar work done and were very satisfied with their outcome."
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
28 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for ICM Remodeling / ICM Building & Remodeling, LLC
ICM Remodeling / ICM Building & Remodeling, LLC
4.8(
22
)
Addition to Existing Structure - Build

Serving Great Falls, VA and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"We were completely satisfied with the quality of the work done and especially the men who did the work in very hot weather. They arrived early and did an outstanding job. We will most certainly use ICM Remodeling in the future."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

Response time2 days
Response rate100%
3 neighbors recently requested a quote
Capstone Remodeling
5.0(
57
)
Addition to Existing Structure - Build

Serving Great Falls, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Warranties offered

"This was our second bathroom remodel by Capstone. The Team did a great job. Their tile work, both in the shower/tub area and on the bathroom floor is fantastic. We had new electrical outlets installed along the vanity and wanted an existing one on the side hall wall removed. Capstone noticed that we did not have an outlet in the hall and suggested moving the existing bathroom outlet down and around to face the hall rather than just not use it. Their thoughtfulness and suggestions set them apart."
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project

+474

Response time1 day
Response rate100%
Recommended by100%of homeowners
Avatar for MARVEL HOMES LLC
MARVEL HOMES LLC
4.9(
43
)
Addition to Existing Structure - Build

Serving Great Falls, VA and surrounding areas

Approved

In business since 2002

Warranties offered

Customers say: True professional

"Best contractor I ever worked with is Marvel Homes, (301) 785-2171, a small firm owned and run by Devin Nasvaderani, truly one of the nicest, most knowledgeable, most organized and honest people I have ever worked with. I have done three projects with him, and been thrilled beyond expectation each time. Devin's is the firm I chose to rebuild the damaged portions of my house after a big fire there. Because we had been through so many problems with other contractors leading up to the rebuilding - despite checking them out and watching them closely - we were REALLY careful before selecting the contractor who would do the rebuilding. We read EVERY single detailed review on Angie's List, we interviewed the top "contenders," and chose Marvel Homes. Even with all of this high expectation, I was blown away by the experience of working with someone who is honest down to his bones, cares about the quality of his work down to the smallest details, is a phenomenally good carpenter with a small crew of stellar, hard-working people he trained himself, was spot-on with every time estimate and cost estimate - and for all of this is relaxed and warm at the same time. They say at the end of a long project with even a good contractor you are "sick of each other" by the end - on the contrary, I was actually sad when the work was done, that's how positive the experience was. In fact, when we needed to replace old windows at my family's house, and I wanted to winterize my screened porch, I chose Marvel Homes for each of those projects and the experience was every bit as positive. I will give details that may help give you a fuller picture of our positive experiences with this business. 1). Many contractors we spoke to came with glossy brochures and polished salesmen. Devin came himself, no glitz or fake conversation, looked at the job with what was clearly a trained eye, and answered all of my questions honestly and to whatever detail I needed. After all we had been through, I had gotten so sick of the "schmoozy" soft-sell/hard sell routine of the bigger companies who talked a lot without saying anything, this was like a breath of fresh air on a stuffy day. 2). His low-key demeanor may fool you. Devin is the most skillful and experienced carpenter/craftsmen and most organized contractor I ever met. He looks with a trained eye at every aspect of the job, and is clear and up front down to the smallest details. He wakes up at 5 each morning and before he leaves for his first job or meeting, he has a print-out of each and every thing he needs to do or discuss on each job, site, or client he will meet with that day. Unlike many good contractors who are not so good with paperwork, Devin's paperwork was so helpful all throughout the project, for planning, knowing when we needed to make choices of materials, knowing when to expect which aspect of the job, knowing breakdown of costs - everything. 3). He does it right. Even if it costs him, he absorbs the cost to get it right. In contrast to the companies that would spend hours talking to me without providing any detail or accurate estimates at all, Devin spent 40 hours of work on his own time without getting paid for it, in order to get accurate estimates and details on each aspect, so I knew exactly what to expect time-wise, and cost-wise, so the insurance estimate would be spot-on, etc. 4). When the refrigerator came, I had chosen a bigger one than we had planned for. The island was already in, but Devin was concerned that with the few extra inches of the refrigerator, the smaller aisle space might be annoying when we would be using it, moving about the kitchen, etc. He arranged to meet me at the house to see what I thought, and then suggested we move the island a few inches back. Despite the fact that I was the one who had chosen that particular refrigerator, he did not charge me for the cost of moving the island, even though I suggested that that was only fair. He said something like, "the job isn't done into you are happy, and we get it right." Who does that? 5). His small crew is terrific. He has trained all of them, and treats them well, so they form a really cohesive team. They arrived on the dot when they said they would, and they left the work area and house cleaner than when they arrived. The respect they showed for me and my things was remarkable, which blew me away after having worked with companies that treated my house like their own work space, without regard for the people or things in it. 6). We had to work with insurance on the big job. Devin's estimate was so "on point" that there was no dispute over any of it, the insurance issued the check without delay. His time estimates of when a part of the job would be done were true and exact, making it possible for us to plan around when certain parts of the job would be done. And his cost estimate was exact also. He is licensed and bonded. He does things by the book, and in fact, the only "negative" comment we ever found for him on Angie's List is "he refuses to use cheap materials." Thank goodness he doesn't. There were so many things I noticed after I moved back home that I never would have noticed while the job was underway, so many corners a less honest or less skilled contractor could have cut that would have slipped by me until long after they were paid and gone. I can't tell you how many times I felt so grateful that we had found Devin. The fire was a nightmare in so many ways, but I have often said that finding Devin and Marvel Homes more than made up for it. His reputation for excellent, by the book, safe work was clearly known to county inspectors, and every inspection went smoothly, without surprises or problems. After you have had a fire, you especially appreciate a contractor that does it safely, and right. He charges a fair price for high quality work. Before Devin I used to try to get things done at cheaper prices. The work was cheap and I would have to supervise every inch and every minute of it to be sure, and even then, I got burned. Devin told me once that a large portion of his jobs are coming in and doing it right after someone cheaper botched it up. Having now worked with a company where I didn't need to supervise ANYTHING to get a proper, careful, skilled result and promised result, I will never go back to the other way."
Before 2
After 2
Exterior
Exterior
Exterior

+8

1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Navid's Construction, Inc.
Navid's Construction, Inc.
4.7(
24
)
Addition to Existing Structure - Build

Serving Great Falls, 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 Great Falls, VA and surrounding areas

Approved (Corporate)

In business since 2001

Warranties offered

Credit card accepted

"Tomas M from JW did a great job. Needed replacement for part of the frame of front door. He did a fantastic job in matching the replacement panel to the rest of door. He also painted the entire frame and replaced some additional wood that we damaged at top of frame and caulked it all. Also had a basement door frame sanded and repainted. He was very good at keeping me informed of the process."
Additional Photos
CARPENTRY SERVICE
EXTERIOR PAINTING
KITCHEN REMODEL
Jesse Wertjes with Angie!

+8

21 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for NV Design & Build
NV Design & Build
5.0(
6
)
Addition to Existing Structure - Build

Serving Great Falls, VA and surrounding areas

Approved (Corporate)

In business since 1996

Free estimates

Warranties offered

"Nv helped us with our one story addition over three years ago. Everything was seamless on the foundation prep contract and we’re happy on our one story to this day. Would hire again for our needs. Professional and timely"
Jay dream home
McLean
New Home Projects
Jay dream home
Stairs and wainscoting. Matte finish tiles at the entrance and hardwood floor all around.

+383

3 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 Great Falls, VA and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"The kitchen remodel was an exceptionally professional process from start to finish. Jeff and Deanna were a fantastic team to work with. They both worked with us to meet all of our needs for our kitchen renovation. Deanna went above and beyond from a design aspect to get us exactly what we were looking for in our new kitchen. The installation team was professional timely, and very easy to work with. All items were measured with precision and our custom kitchen came together perfectly. And to top it all off they were able to complete the kitchen renovation in less time and deliver us our dream kitchen early! Anyone looking for high quality, professional renovation Waterstone goes above and beyond to deliver the best!"
McMillan Bathroom
Spriggs Kitchen
Brandenstein Bathroom
Reston Bathroom 1
Reston Bathroom 2

+12

Response time8 hrs
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for VKB Kitchen & Bath
VKB Kitchen & Bath
4.7(
341
)
Addition to Existing Structure - Build

Serving Great Falls, VA and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"A year ago, I hired VKB Kitchen & bath to build an additional master bathroom and renovated old bath. The great president, Paul P Ibrahimov assigned me a wonderful project manager, Will Vusal for my project. I am grateful to have Mr. Will to be my project manager. He and his team did an extremely marvelous job for the additional master bath and old bath remodel They look beautiful and credential. I have given 5 plus stars review for their job through google review. Today I want to recognize MR. Will, the project manager for his continuous responsible of customer care service and help to resolve any problems they have. He is doing his best to uphold the vkb company core values by guaranteeing a two-year warranty of the quality. Exp, my 88 years old mom was waiting for help with the removal of the shower drain filter to clean it. When I called Mr. Will for the help, he came by himself today to help to resolve the problem. My mom is happy she will be able to use her shower ag"
Kitchen Remodeling in Severn, MD white countertop, cabinets & wooden floors
Kitchen Remodeling in Silver Spring, MD with wooden flooring & quartz countertop
Home Remodel with New Kitchen, Bathroom, Basement & Decking
Complete Home Makeover of Kitchen, Bath & Basement in Laurel, MD
Kitchen Remodel in Laurel, MD with quartz countertop & wooden flooring

+1053

Response time1 day
Response rate100%
3 neighbors recently requested a quote
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FAQs for addition to existing structure building service projects in Great Falls, 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 Great Falls, 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.