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Find Addition to existing structure builders in Washington DC

Avatar for Millennium home renovations Inc

Millennium home renovations Inc

5.00(
5
)
Approved Pro

Millennium home renovations Inc

5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
26 years of experience

With over 14 years of experience, we have the skills, knowledge, and expertise necessary to handle any commercial or residential project, no matter the size. Our expertise also includes electricity, plumbing, and carpentry. We provide the most affordable services to ensure that we can work within your budget to provide you with the highest quality remodeling and construction services. Our work is not complete until you are 100% satisfied. If you are not completely satisfied, we will continue to work at no additional cost to you. We will not collect the remaining balance due until you are completely satisfied. We will check all work, as well, to ensure that all of our quality standards have been met. We are committed to providing quality work that you will be satisfied with for years to come.

"We have worked with Millennium on several projects for our older home. Refinishing a basement that was flooded, replacing cabinetry that had water damage, tiling a large kitchen backsplash, replacing doors, bathroom fans, sinks and building an elevated deck in our backyard. The crew has always been timely, clean and efficient. Dan has always worked with me to make good choices on materials with careful considerations of cost and quality. Their work is great, prices are reasonable and they have been willing to tackle some complicated projects in a non-standard home. I highly recommend them."

Signy W on September 2023

With over 14 years of experience, we have the skills, knowledge, and expertise necessary to handle any commercial or residential project, no matter the size. Our expertise also includes electricity, plumbing, and carpentry. We provide the most affordable services to ensure that we can work within your budget to provide you with the highest quality remodeling and construction services. Our work is not complete until you are 100% satisfied. If you are not completely satisfied, we will continue to work at no additional cost to you. We will not collect the remaining balance due until you are completely satisfied. We will check all work, as well, to ensure that all of our quality standards have been met. We are committed to providing quality work that you will be satisfied with for years to come.

"We have worked with Millennium on several projects for our older home. Refinishing a basement that was flooded, replacing cabinetry that had water damage, tiling a large kitchen backsplash, replacing doors, bathroom fans, sinks and building an elevated deck in our backyard. The crew has always been timely, clean and efficient. Dan has always worked with me to make good choices on materials with careful considerations of cost and quality. Their work is great, prices are reasonable and they have been willing to tackle some complicated projects in a non-standard home. I highly recommend them."

Signy W on September 2023


Avatar for ACS Construction

ACS Construction

5.00(
4
)
Approved Pro

ACS Construction

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
26 years of experience

Trust ACS Construction in Washington DC NW. to handle all your new construction and remodeling projects. We have earned a reputation for excellence, thanks to our dedicated team of employees and associates, as well as our huge network of vendors. Despite the high level of competition in the industry , we have managed to rise above and deliver first-rate services every time. We are not only HomeAdvisor members, but you can also find us on BBB, Houzz, NARI, NKBA. More than just arriving at your location on time, we also make it a point to finish the job before the deadline. We will even extend hours if the situation calls for it. Unlike other companies, we thoroughly explain the entire process so you know what is happening. We will constantly update you with the status of completion and will not impose something that you do not need.

"I hired German to renovate our basement (utility room, laundry room, storage...), including a complete overhaul of plumbing and wiring. I was extremely pleased with the quality of work, the organization of various activities, the price asked and the follow-up. By employing skilled and efficient workers licensed for plumbing (water and gas), electrical and carpentry/drywall the coordination of the various trades was limited to the strict minimum. I would not hesitate to recommend German for similar renovation/extension projects."

Alain L on October 2023

Trust ACS Construction in Washington DC NW. to handle all your new construction and remodeling projects. We have earned a reputation for excellence, thanks to our dedicated team of employees and associates, as well as our huge network of vendors. Despite the high level of competition in the industry , we have managed to rise above and deliver first-rate services every time. We are not only HomeAdvisor members, but you can also find us on BBB, Houzz, NARI, NKBA. More than just arriving at your location on time, we also make it a point to finish the job before the deadline. We will even extend hours if the situation calls for it. Unlike other companies, we thoroughly explain the entire process so you know what is happening. We will constantly update you with the status of completion and will not impose something that you do not need.

"I hired German to renovate our basement (utility room, laundry room, storage...), including a complete overhaul of plumbing and wiring. I was extremely pleased with the quality of work, the organization of various activities, the price asked and the follow-up. By employing skilled and efficient workers licensed for plumbing (water and gas), electrical and carpentry/drywall the coordination of the various trades was limited to the strict minimum. I would not hesitate to recommend German for similar renovation/extension projects."

Alain L on October 2023


Avatar for Reston Restoration Contracting LLC

Reston Restoration Contracting LLC

5.00(
2
)
Approved Pro

Reston Restoration Contracting LLC

5.00(
2
)
Approved Pro
11 years of experience
Warranties offered

At Reston Restoration, we bring nearly 15 years of experience serving Washington, D.C. and the surrounding region. Fully licensed and insured (up to $1,000,000), our team is dedicated to reliable, detail-oriented workmanship on every project. We specialize in roofing (asphalt, TPO, and specialty systems), flooring installation and refinishing, exterior and interior painting, custom carpentry, and full-scale home restoration. From estimate to final walkthrough, we combine skilled craftsmanship with clear communication so clients feel confident every step of the way. Whether replacing a roof, refinishing floors, restoring storm damage, or completing a major remodel, we treat every home as if it were our own. We pride ourselves on punctuality, cleanliness, and transparency—with clear estimates, documented change orders, and no surprise charges.

"I wish I could give Maarten and his team of contractors 10 stars. He far exceeded our expectations. His contractors/workers were always working, doing things that went beyond the scope of the project. Our house/yard was in better shape than when it started. He is one of the only, if not only, contractor I would have do worker prior to getting an estimate. While he was installing the new roof (with an estimate) we had his team working on eight other projects with just a verbal ballpark estimate and he came in below what was expected. Maarten is extremely knowledgeable and was able to resolve issues we have had that other contractors were unable to fix. I would recommend Reston Restoration for any project in the home. Thank you to the Reston Restoration's team"

Steve K on October 2025

At Reston Restoration, we bring nearly 15 years of experience serving Washington, D.C. and the surrounding region. Fully licensed and insured (up to $1,000,000), our team is dedicated to reliable, detail-oriented workmanship on every project. We specialize in roofing (asphalt, TPO, and specialty systems), flooring installation and refinishing, exterior and interior painting, custom carpentry, and full-scale home restoration. From estimate to final walkthrough, we combine skilled craftsmanship with clear communication so clients feel confident every step of the way. Whether replacing a roof, refinishing floors, restoring storm damage, or completing a major remodel, we treat every home as if it were our own. We pride ourselves on punctuality, cleanliness, and transparency—with clear estimates, documented change orders, and no surprise charges.

"I wish I could give Maarten and his team of contractors 10 stars. He far exceeded our expectations. His contractors/workers were always working, doing things that went beyond the scope of the project. Our house/yard was in better shape than when it started. He is one of the only, if not only, contractor I would have do worker prior to getting an estimate. While he was installing the new roof (with an estimate) we had his team working on eight other projects with just a verbal ballpark estimate and he came in below what was expected. Maarten is extremely knowledgeable and was able to resolve issues we have had that other contractors were unable to fix. I would recommend Reston Restoration for any project in the home. Thank you to the Reston Restoration's team"

Steve K on October 2025


Avatar for Banks & Son-Builders

Banks & Son-Builders

4.55(
33
)
Approved Pro

Banks & Son-Builders

4.55(
33
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
8 years of experience

We are a family owned business operating over 40 years in the DMV area, primarily in Washington, D.C. and Montgomery County.  We are BUILDERS, not handymen.  In addition to our Maryland and Washington, D.C. Home Improvement Licenses, we are licensed Maryland Home Builders.  Over the years we've built dozens of CUSTOM homes, start to finish, that are still loved and lived in by their homeowners today!  Although we are a small firm, our scope of work is large.

"Sam Banks Jr will charm you and give you a very fair quote- it might even seem like a steal. Don?t take it. We hired Banks and Son to redo our shower and the lack of attention to detail was atrocious. The final product was sloppy, there were cracked tiles left on the wall, our shower door was installed slanted leaving a large gap at the bottom, the grout was cracked, there was a divot in the floor where water pooled, and there were parts of the shower that were left unsealed. When I emailed Sam about these issues, he was aggressive, misogynistic, and dismissive. He gave excuses and blamed me. Even after he reluctantly fixed everything but the floor- we had another contractor clean up his mess. I would not recommend, his ego is the size of Mars, he?s aggressive towards women, and clearly lacks pride in his services "

Carly H on December 2025

We are a family owned business operating over 40 years in the DMV area, primarily in Washington, D.C. and Montgomery County.  We are BUILDERS, not handymen.  In addition to our Maryland and Washington, D.C. Home Improvement Licenses, we are licensed Maryland Home Builders.  Over the years we've built dozens of CUSTOM homes, start to finish, that are still loved and lived in by their homeowners today!  Although we are a small firm, our scope of work is large.

"Sam Banks Jr will charm you and give you a very fair quote- it might even seem like a steal. Don?t take it. We hired Banks and Son to redo our shower and the lack of attention to detail was atrocious. The final product was sloppy, there were cracked tiles left on the wall, our shower door was installed slanted leaving a large gap at the bottom, the grout was cracked, there was a divot in the floor where water pooled, and there were parts of the shower that were left unsealed. When I emailed Sam about these issues, he was aggressive, misogynistic, and dismissive. He gave excuses and blamed me. Even after he reluctantly fixed everything but the floor- we had another contractor clean up his mess. I would not recommend, his ego is the size of Mars, he?s aggressive towards women, and clearly lacks pride in his services "

Carly H on December 2025


Avatar for 3DF, LLC

3DF, LLC

4.63(
8
)
Approved Pro

3DF, LLC

4.63(
8
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
41 years of experience

3DF LLC is a locally owned and operated company serving the Reston, VA area and surrounding communities. 3DF, LLC is a full service design & builder of your dream home and living environment. We can help expand your existing structure for you and your family to enjoy for years. Professional craftsmanship, reasonable rates, and friendly customer service. Call us now!

"Could not be happier with Jim's work. Remodeled master bath, kitchen, replaced front door, plus several other smaller tasks. Easy to work with. Has a talented eye for style and design. Kept me informed throughout the process. Has experience with the design board in my town (Reston). Never up-charged. I've recommended him to several neighbors already."

Brian B on August 2024

3DF LLC is a locally owned and operated company serving the Reston, VA area and surrounding communities. 3DF, LLC is a full service design & builder of your dream home and living environment. We can help expand your existing structure for you and your family to enjoy for years. Professional craftsmanship, reasonable rates, and friendly customer service. Call us now!

"Could not be happier with Jim's work. Remodeled master bath, kitchen, replaced front door, plus several other smaller tasks. Easy to work with. Has a talented eye for style and design. Kept me informed throughout the process. Has experience with the design board in my town (Reston). Never up-charged. I've recommended him to several neighbors already."

Brian B on August 2024


Avatar for Solid Foundation Construction LLC

Solid Foundation Construction LLC

5.00(
5
)
Approved Pro

Solid Foundation Construction LLC

5.00(
5
)
Approved Pro
Super Service Award
61 local quotes requested
32 years of experience

Solid Foundation Construction is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you.

"They built us a new bedroom/den and did some other work finishing spaces. The team did an incredible job. They completed their work quickly and on budget. We will certainly use them again. "

John G on January 2026

Solid Foundation Construction is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you.

"They built us a new bedroom/den and did some other work finishing spaces. The team did an incredible job. They completed their work quickly and on budget. We will certainly use them again. "

John G on January 2026


Avatar for Omar's General Contracting

Omar's General Contracting

4.87(
137
)
Approved Pro

Omar's General Contracting

4.87(
137
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
38 years of experience

Family own business with 25 + years of experience, our goal is 100% customer satisfaction. Is a trusted company for the best remodeling and handyman services for home. Open since 1988, we have been providing quality general contractor work at affordable prices. Our company is led by experienced professional experienced. We have earned a reputation for being efficient craftsmen who are knowledgeable in all areas of construction and renovations.

"Omar and his team did an outstanding job painting my home. They were consistently professional and courteous, always arriving on time and communicating clearly throughout the project. The work was completed efficiently and with great attention to detail, leaving everything clean and beautifully finished. On top of that, their pricing was fair and transparent. I highly recomment Omar General Contracting for anyone looking for quality painting services. "

Hector D on November 2025

Family own business with 25 + years of experience, our goal is 100% customer satisfaction. Is a trusted company for the best remodeling and handyman services for home. Open since 1988, we have been providing quality general contractor work at affordable prices. Our company is led by experienced professional experienced. We have earned a reputation for being efficient craftsmen who are knowledgeable in all areas of construction and renovations.

"Omar and his team did an outstanding job painting my home. They were consistently professional and courteous, always arriving on time and communicating clearly throughout the project. The work was completed efficiently and with great attention to detail, leaving everything clean and beautifully finished. On top of that, their pricing was fair and transparent. I highly recomment Omar General Contracting for anyone looking for quality painting services. "

Hector D on November 2025


Avatar for Two Brothers Handyman and Home Improvement Service, LLC

Two Brothers Handyman and Home Improvement Service, LLC

4.96(
76
)
Approved Pro

Two Brothers Handyman and Home Improvement Service, LLC

4.96(
76
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
21 years of experience

Two Brothers Handyman and Home Improvement Service has 20+ years experience and a "CLASS A LICENSE IN VA & DC". We love every type of project from large scale renovations to even the smallest of jobs! We specialize in quality workmanship at affordable prices. We take pride in maintaining a consistently high-caliber level of work that comes with a satisfaction guarantee. Open and honest lines of communication with our clients during every step of the project is key to building relationships with successful outcomes. Washington DC License #2705168243, Expiration 5/31/2020.

"Ruben and his team were excellent from the beginning of our bathroom renovation to the end. Ruben provided a thorough consultation at our home, let us know about the timeline, and worked with us to ensure we had the materials we needed (we procured some we wanted to pick out and we procured others that we needed help with). He provided good recommendations during the project, kept us updated, and ultimately finished the project within the timeframe he gave. We were really happy with the quality of the finished bathroom and we would definitely recommend Two Brothers."

Carlin L on January 2026

Two Brothers Handyman and Home Improvement Service has 20+ years experience and a "CLASS A LICENSE IN VA & DC". We love every type of project from large scale renovations to even the smallest of jobs! We specialize in quality workmanship at affordable prices. We take pride in maintaining a consistently high-caliber level of work that comes with a satisfaction guarantee. Open and honest lines of communication with our clients during every step of the project is key to building relationships with successful outcomes. Washington DC License #2705168243, Expiration 5/31/2020.

"Ruben and his team were excellent from the beginning of our bathroom renovation to the end. Ruben provided a thorough consultation at our home, let us know about the timeline, and worked with us to ensure we had the materials we needed (we procured some we wanted to pick out and we procured others that we needed help with). He provided good recommendations during the project, kept us updated, and ultimately finished the project within the timeframe he gave. We were really happy with the quality of the finished bathroom and we would definitely recommend Two Brothers."

Carlin L on January 2026


Avatar for UrbanLab

UrbanLab

4.83(
6
)
Approved Pro

UrbanLab

4.83(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Visit our Resources Page for valuable FREE resources to help with your planning and permitting questions and book a call with our Principal Architect. At UrbanLab Architecture, we understand the unique challenges and opportunities that small business owners face. With over 20 years of experience, our firm is dedicated to providing innovative architectural solutions that not only meet your needs but also enhance your business's potential. Based in Washington, DC, we specialize in transforming commercial spaces into dynamic environments that reflect your brand and vision. Our expertise spans hospitality, multi-family, and mixed-use developments, ensuring that your project benefits from our comprehensive approach to design and planning. Led by Principal Architect David den Daas, our team is committed to delivering excellence from concept to completion. We offer a full range of services, including feasibility studies, design, permitting, and construction, all tailored to fit your specific goals and budget. With a focus on quality, efficiency, and sustainability, UrbanLab Architecture is your trusted partner in creating spaces that inspire and succeed. Let's collaborate to bring your business vision to life. Contact us today to explore how we can elevate your business through exceptional design and permitting expertise.

"David and his team were professional, diligent, creative and prompt. They immediately identified the issues and guided us from design through permitting. He went above and beyond and we couldn’t recommend any higher."

Pete M on July 2024

Visit our Resources Page for valuable FREE resources to help with your planning and permitting questions and book a call with our Principal Architect. At UrbanLab Architecture, we understand the unique challenges and opportunities that small business owners face. With over 20 years of experience, our firm is dedicated to providing innovative architectural solutions that not only meet your needs but also enhance your business's potential. Based in Washington, DC, we specialize in transforming commercial spaces into dynamic environments that reflect your brand and vision. Our expertise spans hospitality, multi-family, and mixed-use developments, ensuring that your project benefits from our comprehensive approach to design and planning. Led by Principal Architect David den Daas, our team is committed to delivering excellence from concept to completion. We offer a full range of services, including feasibility studies, design, permitting, and construction, all tailored to fit your specific goals and budget. With a focus on quality, efficiency, and sustainability, UrbanLab Architecture is your trusted partner in creating spaces that inspire and succeed. Let's collaborate to bring your business vision to life. Contact us today to explore how we can elevate your business through exceptional design and permitting expertise.

"David and his team were professional, diligent, creative and prompt. They immediately identified the issues and guided us from design through permitting. He went above and beyond and we couldn’t recommend any higher."

Pete M on July 2024


Avatar for NV Design & Build

NV Design & Build

5.00(
6
)
Approved Pro

NV Design & Build

5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
30 years of experience

We are a full-service, licensed, and bonded design-build company that provides superior home design and remodeling services for basements, addition, custom new home and all residential renovation needs in VA, DC & MD and surrounding areas. With our integrated home renovation design-build approach, everything is under control for your project – from design to material procurement, project management to construction – so that your home renovation process is smooth and efficient. Our expertise includes everything from additions, new construction design and build, bathrooms, kitchens, and basements to full home renovations and anything in-between. We pride ourselves on our high-end designs, quality of construction, and most importantly, our client satisfaction.

"Everything went great. This is definitely a big addition for me."

Dayana W on May 2023

We are a full-service, licensed, and bonded design-build company that provides superior home design and remodeling services for basements, addition, custom new home and all residential renovation needs in VA, DC & MD and surrounding areas. With our integrated home renovation design-build approach, everything is under control for your project – from design to material procurement, project management to construction – so that your home renovation process is smooth and efficient. Our expertise includes everything from additions, new construction design and build, bathrooms, kitchens, and basements to full home renovations and anything in-between. We pride ourselves on our high-end designs, quality of construction, and most importantly, our client satisfaction.

"Everything went great. This is definitely a big addition for me."

Dayana W on May 2023

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FAQs for addition to existing structure building service projects in Washington DC, DC

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 Washington DC, DC 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.