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

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

Serving Alexandria, 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 ICM Remodeling / ICM Building & Remodeling, LLC
ICM Remodeling / ICM Building & Remodeling, LLC
4.8(
22
)
Addition to Existing Structure - Build

Serving Alexandria, VA and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"I've had my share of renovation projects performed by people of various levels of experience, races, ages, ethnic and educational backgrounds. All of them had one thing in common: all these charming, decent, diligent, God-fearing etc contractors magically turned into evil creatures who would poison your life by not following your instructions, showing up late, making a huge mess, spoiling everything, and then disappear into the thin air soon after the deposit money change hands.
So in the beginning I was only cautiously optimistic about working with Israel Clavijo, although I was impressed my the level of his competence, punctuality, assertive yet very courteous manner. Little did I know that I was embarking on the most pleasing and carefree renovation experience of my life!
My big home had only two tiny coat closets which could not possibly house even a small part of my large family's outdoor clothes and shoes. Huge shoe piles in a middle of our elegant foyer, and coats, scarfs and hats hanging everywhere were the eyesore. I've decided to sacrifice part of my underutilized living room to build a large walk-in closet, and turn the existing closets by the entrance door into practical shoe closets. Israel didn't blinked at the idea of building the closet in the living room. Instead, he offered number of very valuable suggestions, did quick measurements and presented me with the proposal on a next day. After checking a couple of more highly recommended home improvement companies, I've decided to go with ICM not only because they were slightly more reasonable but also because I felt more confident working with them. I didn't regret my choice. I was given an honest time frame, which they were able to adhere to, although I kept adding new requests. Israel introduced his crew to me, they were punctual, hard working, neat, and very polite. They would start in the morning and finish in the evening; no long breaks, no mid-week days off, thank you very much. The results were stunning! Incredibly, design and execution of a new closet actually improved my living room's proportions! Israel and his crew diligently saved the wall moldings and matched the paint - my new closet looks very much like a part of the room. As for my new shoe closets, they are every inch as practical as they are pleasure to look at! Instead of expensive LED tape lights, Israel installed cute cabinet lights which served the purpose at the reduced cost. They installed a heavy chandelier in a room that never had a ceiling light - it took an expertise, finesse, and wiliness to satisfy the client. Before they started, they protected floors and furniture with plastic wrap and cardboard. After they finished their work, they cleaned up after themselves. When I asked for a couple of touch-ups, Israel had no problem doing so. I cannot finish my review without mentioning Wendy Clavijo, Israel's wife, office manager and his customer/company liaison. Very polite, very friendly, very diligent, she was always there to help. Everyone who comes to my home makes positive comments on my unusual yet charming clothes and shoes arrangements. I know that without Israel's professionalism and dedication I wouldn't have it. I'd like to express my gratitude to the whole ICM team.

"
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+4

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

Serving Alexandria, 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 Alexandria, VA and surrounding areas

Approved

In business since 2002

Warranties offered

Customers say: True professional

"Requested an estimate on two building projects. The estimator arrived promptly at the time specified, took good notes and provided me a written estimate the next day.  I did not have any work performed at that time."
Before 2
After 2
Exterior
Exterior
Exterior

+8

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 Alexandria, 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 Alexandria, 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 JW Home Improvement
JW Home Improvement
4.4(
5,749
)
Addition to Existing Structure - Build

Serving Alexandria, VA and surrounding areas

Approved (Corporate)

In business since 2001

Warranties offered

Credit card accepted

"I hired JW Home Improvement to remove wood filler and a microwave above my electric stove, and replace it with a pre-made cabinet and new range hood. Denis, the JW Technician who was sent to my home to conduct the work, was very professional, knowledgeable and detail oriented. Due to an unknown pre-existing issue that necessitated cutting into the dry wall in the bulk-head (above my stove), the job ended up taking approximately 3 hours longer than what was originally projected. That being said, Denis devised a successful solution to deal with the unexpected snag, repaired the drywall and expertly painted the entire wall. I am issuing a rating of five out of five stars for his performance."
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CARPENTRY SERVICE
EXTERIOR PAINTING
KITCHEN REMODEL
Jesse Wertjes with Angie!

+8

15 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Arcadian Building and Design, LLC
Arcadian Building and Design, LLC
4.9(
9
)
Addition to Existing Structure - Build

Serving Alexandria, VA and surrounding areas

Approved

In business since 2014

Free estimates

Customers say: Quick response

"I have been dealing with AJ Building Contractors for years. Arthur takes a lot of pride in his workmanship and is very detail oriented. From the moment you walk in one of his homes you know right away he is an excellent builder, very professional, and he cares about his homes and the quality material that goes into them. If I was having a home, or addition put on my house AJ Building would be my first call."
Craftsman Custom Home in North Arlington, VA, comp
Modern Home Addition in North Arlington, VA, compl
Add More Photos Finished  Craftsman Home Addition
Craftsman Custom Home in North Arlington, VA, comp
Craftsman Home Addition in Alexandria, VA, complet

+213

Response time1 day
2 neighbors recently requested a quote
Recommended by100%of homeowners
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FAQs for addition to existing structure building service projects in Alexandria, 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 Alexandria, 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.