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

Avatar for Arms Home Improvement
Arms Home Improvement
5.0(
45
)
Addition to Existing Structure - Build

Serving Kensington, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Warranties offered

"Allen Metcalf is an artist. He doesn’t just build something, he creates. This is the second project he has done for us and replaced a small deck outside our sunroom that as rotting. Allen pointed out that more than one piece of structural wood needed replacing. He also pointed out where the deck and addition weren’t properly anchored to the house. He submitted a 14 page estimate detailing everything he would be using and doing. If you want the best and don’t mind paying a few dollars more for his precise, professional, and well crafted work, you need to contact Allen."
Finished Carpentry and Woodworking Project
Finished Carpentry and Woodworking Project
Finished Carpentry and Woodworking Project
Finished Carpentry and Woodworking Project
Finished Carpentry and Woodworking Project

+359

Response time10 mins
5 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for General Remodeling Group
General Remodeling Group
4.9(
23
)
Addition to Existing Structure - Build

Serving Kensington, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Emergency services offered

"Visvydas and Dan were amazing to work with. I interviewed several contractors and Dan was the only one who really listened to me and found a way to accomplish what I wanted. Dan explained what was happening and why and was very patient with my questions and changes. The renovation exceeded my expectations and I could not be happier with the results. I highly recommend General Remodeling Group, Visvydas, and Dan!"
Master Bathroom, NW, DC, 2024
Bathroom, NW, DC, 2023
Kitchen, NW, DC, 2022
Master Bathroom, NW, DC, 2024
Bathroom, NW, DC, 2023

+167

Response time12 hrs
Response rate95%
7 neighbors recently requested a quote
Avatar for DreamMaker Bath & Kitchen
DreamMaker Bath & Kitchen
4.9(
32
)
Addition to Existing Structure - Build

Serving Kensington, MD and surrounding areas

Approved

In business since 1983

Warranties offered

Credit card accepted

"The remodel went great. The cabinets look wonderful. DreamMakers were excellent and very professional. Would hire them again and am recommending them to all of our friends and family."
Additional Photos
Additional Photos
Additional Photos
Before
After

+18

Response time2 days
Response rate100%
2 neighbors recently requested a quote
Avatar for John Krause Construction
John Krause Construction
4.4(
169
)
Addition to Existing Structure - Build

Serving Kensington, MD and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"After doing much research I hired John Krause Construction for a very large project: Sunroom addition, deck, patio, front hardscape and landscape with design of my entire house and yard! John came out personally and was very honest and his pricing was fair. They did an amazing job taking my vision and making it a reality. The crews were efficient and responsive. I will use them in the future."
Pool House Exterior with Floor-to-Ceiling Windows & Doors, Two Pergolas, & Cupola with Windows
Modern Farmhouse Kitchen
Luxury Bathroom Renovation with Free-Standing Clawfoot Tub & Chandelier
Pool House - Side Entrance
Modern Farmhouse Kitchen with Farmhouse Sink, Pull-Down Faucet, Stainless Steel Range, Range Hood, Double Wall Oven, and Dishwasher

+113

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

Serving Kensington, MD and surrounding areas

Approved

In business since 2002

Warranties offered

Customers say: True professional

"Devin Nasvaderani (Marel Homes) is, without a doubt, the best contractor with whom I have ever worked. He came into a job that had been royally screwed up by a prior contractor (see review of Stevenson & Sons). He thoroughly inspected the property, prepared a detailed bid, gave us advice on the most important items and delivered a bid that could work with our budget and the existing lender requirements. His entire crew were professional and consciencious. Devin delivered on time, on budget with high quality work. He kept us informed throughout the process. The portico he built is frequently the subject of compliments by our neighbors (and people just driving by). We will use Devin to continue improving our home. He took a nightmare and turned it into the dream home we had hoped for. If you need a great contractor to remodel your home, call Devin at Marvel Homes (the name says it all).
"
Before 2
After 2
Exterior
Exterior
Exterior

+8

1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Top Remodeling, LLC
Top Remodeling, LLC
5.0(
67
)
Addition to Existing Structure - Build

Serving Kensington, MD and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"I can't thank Top Remodeling enough for the amazing deck they built for us. The team's dedication to quality is evident, and it's a perfect addition to our home!"
New kitchen remodel
TOP REMODELING LLC
TOP REMODELING LLC
TOP REMODELING LLC
TOP REMODELING LLC

+40

Response time1 day
6 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for WaterStone Kitchen and Bath
WaterStone Kitchen and Bath
4.9(
46
)
Addition to Existing Structure - Build

Serving Kensington, MD and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"From our first visit to the Waterstone office to the final walkthrough when the project was completed, our experience with Waterstone was fantastic. Jeff Thompson and Deanna Llewellyn designed the new kitchen, taking our input and making a plan that was better than we hoped. The entire renovation process was done professionally, with respect to the fact that we were living in the house at the time. Javier led the crew, and every day the site was cleaned up and Javier took the time to explain the work they'd done that day and what they would do next. The project came in at budget, it was done on time, and the work was top notch. We're very happy with the outcome, and in fact, we've talked to Jeff about the master bath. I give this group my highest recommendation."
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 D&G Remodeling
D&G Remodeling
5.0(
43
)
Addition to Existing Structure - Build

Serving Kensington, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Warranties offered

"It went perfect. The guys are very professional, dedicated and motivated to finish their job well. I was very pleased with their attitude toward the job, and the cost was decent in every way."
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 JW Home Improvement
JW Home Improvement
4.4(
5,749
)
Addition to Existing Structure - Build

Serving Kensington, MD and surrounding areas

Approved (Corporate)

In business since 2001

Warranties offered

Credit card accepted

"The technician -- Angelo -- arrived on time, clearly knew what he needed to do, was efficient, and very friendly. Also, the staff in the office were very easy to work with, and were good about keeping me informed of the schedule for my work. I will certainly go back to JW for 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
Avatar for NV Design & Build
NV Design & Build
5.0(
6
)
Addition to Existing Structure - Build

Serving Kensington, MD 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
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FAQs for addition to existing structure building service projects in Kensington, MD

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 Kensington, MD 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.