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Find Addition to existing structure builders in Washington DC

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

At Reston Restoration, we bring nearly 20 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 20 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

R & A Contractors Group Inc.

5.00(
3
)
•Approved Pro

R & A Contractors Group Inc.

5.00(
3
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
21 years of experience

R & A Contractors Group Inc. is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests, and make their concerns the basis of our business.

"R&A Contractors Group, Inc., is a great company to work with. They are on time, efficient, and upfront with pricing."

Daren D on November 2022

R & A Contractors Group Inc. is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests, and make their concerns the basis of our business.

"R&A Contractors Group, Inc., is a great company to work with. They are on time, efficient, and upfront with pricing."

Daren D on November 2022

Avatar for Omar's General Contracting

Omar's General Contracting

4.13(
186
)
•Approved Pro

Omar's General Contracting

4.13(
186
)
•Approved Pro
Customers say: Quality work
54 local quotes requested
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.

"They were responsive and professional. I'm happy with the result."

Sesi A on September 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.

"They were responsive and professional. I'm happy with the result."

Sesi A on September 2025

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 Kozan Construction, LLC

Kozan Construction, LLC

4.75(
28
)
•Approved Pro

Kozan Construction, LLC

4.75(
28
)
•Approved Pro
Customers say: True professional
10 local quotes requested
41 years of experience

We have over 10 years of experience in the business. Here at Kozan Construction, LLC, we pride our company on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"OK, so Mr. Frank was very professional. All his team was very professional, very polite. They were on time and they went far and beyond of what they were supposed to do and did not charge me more than what they said, so I am very very very satisfied with the work that Frank did, and I wanted to thank him team for being so wonderful and such a great People, we don’t get that anymore in America, but he definitely gave me that. And I’m so happy that I hired him. I had five different people that I got proposals from, and I called all of them multiple times to check on things. And definitely Frank. He definitely made this right. So if anybody needs a Plumber, that’s the guy needs to be hired once again. Thank you very much for all your services. And I recommend Frank to anyone that needs plumbing work done Thank You,"

eddie j on December 2025

We have over 10 years of experience in the business. Here at Kozan Construction, LLC, we pride our company on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"OK, so Mr. Frank was very professional. All his team was very professional, very polite. They were on time and they went far and beyond of what they were supposed to do and did not charge me more than what they said, so I am very very very satisfied with the work that Frank did, and I wanted to thank him team for being so wonderful and such a great People, we don’t get that anymore in America, but he definitely gave me that. And I’m so happy that I hired him. I had five different people that I got proposals from, and I called all of them multiple times to check on things. And definitely Frank. He definitely made this right. So if anybody needs a Plumber, that’s the guy needs to be hired once again. Thank you very much for all your services. And I recommend Frank to anyone that needs plumbing work done Thank You,"

eddie j on December 2025

Avatar for Top Remodeling

Top Remodeling

5.00(
20
)
•Approved Pro

Top Remodeling

5.00(
20
)
•Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
66 local quotes requested

Top Remodeling is a Rockville remodeling contractor providing residential homeowners with the highest quality remodeling services. We provide professional remodeling services, including kitchen remodeling, bathroom remodeling, ADU construction, and more. In addition, we help you with design, planning, permit, and construction process. We take great pride in our top-notch remodeling services in Rockville and ensure that every project we do turns out perfectly.

"Our place had good bones but didn’t work for our daily life. Every room felt cut off from the next. Ben and Teddy from Top Remodeling sat with us and came up with a better layout without changing the size of the home. They moved the hallway, opened the living area, and added a custom touch in almost every room. They rebuilt the inside from the studs and used solid-core doors and clean finishes. We went with soft white walls, bronze handles, and natural maple cabinets. Now, it all feels open and calm. Every room has a purpose."

Serenity H on June 2025

Top Remodeling is a Rockville remodeling contractor providing residential homeowners with the highest quality remodeling services. We provide professional remodeling services, including kitchen remodeling, bathroom remodeling, ADU construction, and more. In addition, we help you with design, planning, permit, and construction process. We take great pride in our top-notch remodeling services in Rockville and ensure that every project we do turns out perfectly.

"Our place had good bones but didn’t work for our daily life. Every room felt cut off from the next. Ben and Teddy from Top Remodeling sat with us and came up with a better layout without changing the size of the home. They moved the hallway, opened the living area, and added a custom touch in almost every room. They rebuilt the inside from the studs and used solid-core doors and clean finishes. We went with soft white walls, bronze handles, and natural maple cabinets. Now, it all feels open and calm. Every room has a purpose."

Serenity H on June 2025

Avatar for CHEVY CHASE REMODELING

CHEVY CHASE REMODELING

4.77(
170
)
•Approved Pro

CHEVY CHASE REMODELING

4.77(
170
)
•Approved Pro
Customers say: Terrific value
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
57 local quotes requested

26 employees. Cost is determined by the job. Travel charges may apply. Service fee applies. Extra charge for after-hours service. License #: 95598. Additional contact: jennifer depollar. Additional phone #: (240)535-6296. Additional service areas: calvert county & district of columbia. Additional services offered: siding, roofing, windows, kitchens, baths, flooring,painting. We work under the rowan group llc's licensing in Virginia and D.C.

"I wish I could give ten stars. Came home from Christmas to a literal waterfall in my house. Steven and his crew were absolutely the best team I could have asked for. Understanding, communicative, empathetic and on top of all that, the quality of their work is EXCELLENT. My entire first floor was taken down to studs and rebuilt and it's better than it was before the disaster."

Jen K on October 2025

26 employees. Cost is determined by the job. Travel charges may apply. Service fee applies. Extra charge for after-hours service. License #: 95598. Additional contact: jennifer depollar. Additional phone #: (240)535-6296. Additional service areas: calvert county & district of columbia. Additional services offered: siding, roofing, windows, kitchens, baths, flooring,painting. We work under the rowan group llc's licensing in Virginia and D.C.

"I wish I could give ten stars. Came home from Christmas to a literal waterfall in my house. Steven and his crew were absolutely the best team I could have asked for. Understanding, communicative, empathetic and on top of all that, the quality of their work is EXCELLENT. My entire first floor was taken down to studs and rebuilt and it's better than it was before the disaster."

Jen K on October 2025

Avatar for JW Home Improvement

JW Home Improvement

4.64(
4,796
)
•Approved Pro

JW Home Improvement

4.64(
4,796
)
•Approved Pro
Customers say: Super punctual
853 local quotes requested
25 years of experience

JWHI provides world-class customer service with consistent and superior workmanship. We strive to be the trusted market leader in the home improvement industry. Proudly, we are Super Service Award Winner for over a decade, and we plan to keep that streak going! Contact us today to discuss your next handyman or remodeling project. Our mission is to provide you with a happy home improvement experience!

"I just warn other people about their scam like business tactic. They added up overhead charge (8% of labor cost) and whatever material they used to finish the job. So an upfront estimate they give you is only labor cost. Be careful before you hire."

kyong P on December 2025

JWHI provides world-class customer service with consistent and superior workmanship. We strive to be the trusted market leader in the home improvement industry. Proudly, we are Super Service Award Winner for over a decade, and we plan to keep that streak going! Contact us today to discuss your next handyman or remodeling project. Our mission is to provide you with a happy home improvement experience!

"I just warn other people about their scam like business tactic. They added up overhead charge (8% of labor cost) and whatever material they used to finish the job. So an upfront estimate they give you is only labor cost. Be careful before you hire."

kyong P 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 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

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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.

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