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House Extension Professionals in Washington D.C., DC

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Washington D.C. / 25 mi
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House Extensions
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2,396 Professionals

Featured Reviews for House Extension Professionals in Washington D.C., DC

Smith, Thomas & Smith, Inc.
House Extension Professionals in Washington D.C., DC
Average rating: 5 out of 5 stars2 December 2016
“STS is always on schedule and within budget. Attention to detail and craftsmanship is outstanding. Work areas are clean and organized. Their crews are polite and respectful. It is a pleasure to recommend and to work with them.”
Anchor Property Services, LLC
House Extension Professionals in Washington D.C., DC
Average rating: 4 out of 5 stars5 August 2013
“Perry has done work for clients of mine and I work hard to make sure that they have the utmost integrity and work ethic. Perry and his team are true pros who treat a clients home like they would treat their own home. I can recommend him to clients and to others without reservation.”
95 Custom Construction
House Extension Professionals in Washington D.C., DC
Average rating: 5 out of 5 stars3 April 2018
“95 Custom Construction renovated my downstairs, kitchen, upstairs, front and back porch and upper deck and will be using them again when I am ready to have my basement renovated. I simply enjoyed working with Mr. Stephen Alves and his workers on this project. They made the work completely stress free, and worked around my pet's schedule. I did not have to send them to one of my family members home while they worked; and even they enjoyed having them around! They did a phenomenal job on my home and I am overjoyed with happiness at the completed project! I did not have any idea of how I wanted my kitchen or bathroom designed and just talking with Mr. Alves a few moments, he was able to give me design ideas for both and it turned out great. He knew exactly what my personality was and what design I would like and dislike. The workers were very respectful and at the end of the day, they ensured everything they moved out of place was put back in place or placed somewhere my pets couldn't get to. 95 Custom Construction was a blessing to me!!”
Numon Design Build
House Extension Professionals in Washington D.C., DC
Average rating: 5 out of 5 stars19 June 2019
“Simply the best contractor I have ever used (and I have used many contractors over the years). George and his team are consummate professionals. They worked closely and tirelessly with us to develop a design for our master bath transforming it into a stunning masterpiece. The team was timely, responsive, competent, courteous, flexible, and very considerate in the execution of the construction. They were also very clean and efficient, finishing ahead of schedule. His bid was very competitive and the contract was very clear and straight forward. He knew of code and other restrictions that other contractors tried to hide or leave out of their bids. He was quick to respond to my calls and questions. We simply could not be happier with the way it turned out and with the process. We thoroughly enjoy every aspect of the design of our new bathroom! They have my highest recommendation.”
Costello Builders LLC
House Extension Professionals in Washington D.C., DC
Average rating: 5 out of 5 stars29 November 2023
“Andy's first project was our back deck in 2021. His attention to detail, pride, and craftsmanship in the job, made it an easy decision that we would hire him again. We did glass panel railings and added gorgeous lighting. About a year later we hired him to renovate 2 bathrooms. He guided us to a great local cabinet and local tile company he has worked with for years. Both companies that apply the same level of detail as him. He always adds a creative touch that improves the functionality, and was willing to work with my creative ideas too. In my kids bathroom, we put a lot of thought into getting the right placement for shelving in the shower and we have a motion-sensored under vanity lighting (to light the floor) to act as a night light. Every time I walk in the bathroom I think it just looks stunning. We will definitely hire Andy for future projects.”
MJ Design & Build
House Extension Professionals in Washington D.C., DC
Average rating: 5 out of 5 stars7 February 2023
“This husband and wife team were able to bring to life a powder room I had envisioned but couldn’t make happen. I had seen a sink and pedestal on Houzz and Pinterest that I loved but couldn’t find in the states. They were able to duplicate the design at a reasonable cost and pull together the rest of the bathroom for a complete look. Their communication skills are top notch, their employees were there when they said they’d be there, always neat and cleaning up as they went along.”
Clarksville Construction Services
House Extension Professionals in Washington D.C., DC
Average rating: 4 out of 5 stars27 January 2014
“Put in Cove lighting in media room and built screened in area under deck. The work was well done. Weather contributed a bit to a delay in finishing the outside work. The company is very busy and slow to provide estimates. Once contract is signed they keep to the schedule and if there is a schedule change they notify you in advance.”
EVCON, Inc.
House Extension Professionals in Washington D.C., DC
Average rating: 5 out of 5 stars6 January 2017
“I called three companies and got quotes. They guys were on time, gave me good price after I picked them the best part is they did the job completely, no heads and they cleaned up, its really nice and very professional. I have recommended them and I would use them again.”
RenoSafe Homes
House Extension Professionals in Washington D.C., DC
Average rating: 5 out of 5 stars27 May 2018
“Renosafe does a terrific job on repairs- they are clean and neat and were able to diagnose problems quickly. I highly recommend them for any job!”
Karma Construction Group
House Extension Professionals in Washington D.C., DC
Average rating: 4 out of 5 stars1 November 2014
“We hired Karma Home Designs to renovate our bathroom area, refinish hardwood floors, paint the entire house, and change the conventional hot water heater to a tankless electric water heater. Karma's crew did an excellent job converting an old one-unit tub shower to a frameless walk-in shower that now looks like a million dollars!! Also did a very nice job painting the entire home and refinishing hardwood floors that had deep cuts and numerous scratches. Our home feels more spacious and bright. Karma's managing partners are young, professional and have the knowledge to propel them to greater heights. They are personable, honest and worked well with us to make our vision a reality! Karma's strength is working within the budget. As in every renovation project, there were some delays and hiccups along the way but Karma worked diligently to address those issues. Will not hesitate to recommend Karma, and we would use them again!!!”
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Builder FAQs
A house extension is a construction process that involves expanding the footprint of your existing home. This could be extending outwards, either to the side or rear of the house, or upwards by adding another storey. House extensions provide extra living space and can significantly increase the value of your property.

House extensions can be categorised based on direction, structure and function. The main types include rear extensions, side return extensions, wrap-around extensions, and double or single-storey extensions. More specific ones could be kitchen extensions, loft conversions, basement conversions, garage conversions or conservatories. Select the type that best suits your property and meets your space needs, if you are unsure, speaking with a local home extension builder in Washington D.C..

Generally, house extensions are worth the investment. They provide additional living space and can dramatically increase the resale value of your home, often covering the initial investment cost. However, plan carefully and choose a reputable house extension builder to ensure a high-quality build that will add value to your property.

The cost of a house extension can vary significantly based on several factors, such as the size, complexity of the design, quality of materials used, and geographical location. However, as a rough estimate, a single-storey extension can range from £1,000 to £2,000 per square metre, whereas a two-storey extension can start at around £1,500 per square metre.

Planning a house extension involves several stages, including idea generation, design, planning permission, and construction. Consult with a house extension architect to create a design based on your needs and budget. Ensure to check with your local council about planning permissions. Finally, choose a reputable house extension builder to bring your vision to life.
Why Hire Home Builders on Houzz?
2,396Local Pros on Houzz Who Serve Washington D.C., DC
95,000+Total Number of Reviews Left by Homeowners
Are you considering a house extension? On Houzz, you can find an extensive selection of Washington D.C. house extension professionals near you, eager to turn your vision into a reality. Whether you're planning an extra bedroom, expanding your kitchen or designing a brand-new workspace, these professionals have the skills and expertise to make your project successful. House extension professionals include architects who can draw up detailed plans and builders who will execute them to the finest standards.

Choosing a house extension professional on Houzz ensures peace of mind, knowing that you’re in safe hands. They come highly recommended with a strong track record of creating bespoke, high-quality extensions in Washington D.C. in a wide range of styles and budgets. Whether planning a new kitchen extension, adding a new storey, or just wanting more living space, find your house extension solution with us.

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