Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in your area

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Addition to existing structure builders in Kensington

Metropolitan Energy Savers Company
12172 Hidden Brook Terrace
4.77(
16
)
Approved Pro
Metropolitan Energy Savers Company
12172 Hidden Brook Terrace
4.77(
16
)
Approved Pro
Customers say: Quick response
26 years of experience
Free onsite estimate

If you�re considering ways to improve the beauty, functionality, and energy efficiency of your home, you�ve come to the right place. Metropolitan Energy Savers Company has been helping homeowners to make the most of their most important investment. We work with your vision and style to help you create a place that�s all your own. Metropolitan Energy Savers Company has been providing quality remodeling service in the Gaithersburg metro area and Montgomery County since 1999. First- and second-floor additions are our specialty. Please check out our ratings from previous satisfied customers. Metropolitan Energy Savers Company also performs home remodeling, including new kitchens, decks, bathrooms, roofs, windows, siding, basements, and more. We believe that great homes deserve great service. Our efficient and hard-working remodeling and add-ons crews believe in delivering the most cost-effective consultation available. For further information call us today!

"Great work"

Bob B on April 2019

If you�re considering ways to improve the beauty, functionality, and energy efficiency of your home, you�ve come to the right place. Metropolitan Energy Savers Company has been helping homeowners to make the most of their most important investment. We work with your vision and style to help you create a place that�s all your own. Metropolitan Energy Savers Company has been providing quality remodeling service in the Gaithersburg metro area and Montgomery County since 1999. First- and second-floor additions are our specialty. Please check out our ratings from previous satisfied customers. Metropolitan Energy Savers Company also performs home remodeling, including new kitchens, decks, bathrooms, roofs, windows, siding, basements, and more. We believe that great homes deserve great service. Our efficient and hard-working remodeling and add-ons crews believe in delivering the most cost-effective consultation available. For further information call us today!

"Great work"

Bob B on April 2019


Avatar for WES Construction
WES Construction
16908 Baederwood Ln
5.00(
9
)
Approved Pro
WES Construction
16908 Baederwood Ln
5.00(
9
)
Approved Pro
Customers say: Quick response
35 years of experience
Free onsite estimate

WES Construction 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 customers' interests, and make their concerns the basis of our business.

"Work done as promised."

Paul C on July 2024

WES Construction 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 customers' interests, and make their concerns the basis of our business.

"Work done as promised."

Paul C on July 2024


Avatar for Managed Renovations
Managed Renovations
3302 Camalier Drive
5.00(
16
)
Approved Pro
Managed Renovations
3302 Camalier Drive
5.00(
16
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 years of experience

Managed Renovations engages with our clients using a couple different business models depending on their needs, preferences, and level of desired participation in some of the required tasks involved with most projects. Some of our clients choose to use our unique construction management services business model to build their project that is distinctive from the typical fixed-price general contractor (GC) approach to construction. For those clients we provide fee-based construction management consulting services to schedule, manage (on-site), and review all the work that our clients choose to have us handle for the project. We connect and contract our clients with our seasoned collection of licensed and insured tradesmen and subcontractors (and our own in-house carpenters) that will provide each of their fixed price costs. Alternatively, some of our clients prefer to have their project built using a typical fixed-price general contractor (GC) approach to construction.

"We recently had our kitchen remodeled by Managed Renovations. The experienceâ from start to finishâ was nothing short of amazing and the finished kitchen is spectacular, exceeding our expectations. The Managed Renovations team, Michael and Natalie, and their subcontractorsâ carpenters, electricians, plumbers, and floor installersâ displayed a level of professionalism, craftsmanship, and attention to detail that was extraordinary. They turned a small, poorly designed 1970s kitchen into a large, beautiful, functional space that is now the heart of our home. Although the project involved demolishing walls and removing the existing cabinets, appliances, and flooring (and replacing them with new cabinets, appliances, and flooring), they accomplished this with minimal disruption to our lives, always leaving our home and the work area clean at the end of the day. Managed Renovations communicated with us throughout, (we could also track every aspect of the project online), making sure we were comfortable with every decision. Their recommendations, whether about design elements or vendors, were always â spot on.â There were no surprises. They delivered what they promised when it was promised, completing our kitchen on time and without any unanticipated costs. Managed Renovations' dedication to excellence and customer satisfaction is truly unmatched. If youâ re looking for a general contractor who will deliver outstanding results, look no further than Managed Renovations."

David F on July 2024

Managed Renovations engages with our clients using a couple different business models depending on their needs, preferences, and level of desired participation in some of the required tasks involved with most projects. Some of our clients choose to use our unique construction management services business model to build their project that is distinctive from the typical fixed-price general contractor (GC) approach to construction. For those clients we provide fee-based construction management consulting services to schedule, manage (on-site), and review all the work that our clients choose to have us handle for the project. We connect and contract our clients with our seasoned collection of licensed and insured tradesmen and subcontractors (and our own in-house carpenters) that will provide each of their fixed price costs. Alternatively, some of our clients prefer to have their project built using a typical fixed-price general contractor (GC) approach to construction.

"We recently had our kitchen remodeled by Managed Renovations. The experienceâ from start to finishâ was nothing short of amazing and the finished kitchen is spectacular, exceeding our expectations. The Managed Renovations team, Michael and Natalie, and their subcontractorsâ carpenters, electricians, plumbers, and floor installersâ displayed a level of professionalism, craftsmanship, and attention to detail that was extraordinary. They turned a small, poorly designed 1970s kitchen into a large, beautiful, functional space that is now the heart of our home. Although the project involved demolishing walls and removing the existing cabinets, appliances, and flooring (and replacing them with new cabinets, appliances, and flooring), they accomplished this with minimal disruption to our lives, always leaving our home and the work area clean at the end of the day. Managed Renovations communicated with us throughout, (we could also track every aspect of the project online), making sure we were comfortable with every decision. Their recommendations, whether about design elements or vendors, were always â spot on.â There were no surprises. They delivered what they promised when it was promised, completing our kitchen on time and without any unanticipated costs. Managed Renovations' dedication to excellence and customer satisfaction is truly unmatched. If youâ re looking for a general contractor who will deliver outstanding results, look no further than Managed Renovations."

David F on July 2024


Avatar for East Coast Concrete LLC
East Coast Concrete LLC
7643 Paradise Beach Road
4.08(
18
)
Approved Pro
East Coast Concrete LLC
7643 Paradise Beach Road
4.08(
18
)
Approved Pro
1 years of experience
Free onsite estimate

East Coast Concrete LLC, proudly servicing Pasadena, MD and the surrounding areas. Our goal is to complete your project to perfection. We look forward to building long lasting relationships with the customers that we serve. We look forward to serving you. Call us today! You will not be disappointed.

"I needed the concrete stoop in front of my house re-poured and re-shaped. The job is coming along beautifully. Luke is a pleasure to work with and is managing my project very efficiently. He is friendly and knowledgeable and has answered all my concerns promptly. I look forward to seeing the job completed very soon."

Sharon G on February 2025

East Coast Concrete LLC, proudly servicing Pasadena, MD and the surrounding areas. Our goal is to complete your project to perfection. We look forward to building long lasting relationships with the customers that we serve. We look forward to serving you. Call us today! You will not be disappointed.

"I needed the concrete stoop in front of my house re-poured and re-shaped. The job is coming along beautifully. Luke is a pleasure to work with and is managing my project very efficiently. He is friendly and knowledgeable and has answered all my concerns promptly. I look forward to seeing the job completed very soon."

Sharon G on February 2025


Avatar for NC Repair and Remodeling
NC Repair and Remodeling
14117 Bauer Drive
5.00(
2
)
Approved Pro
NC Repair and Remodeling
14117 Bauer Drive
5.00(
2
)
Approved Pro
Customers say: Quick response
4 years of experience
Free onsite estimate

NC Repair and Remodeling is your trusted partner in transforming spaces. With our expertise spanning from residential repairs and renovations to commercial build-outs and service contracts. We're here to make your dreams a reality. Let us help you create the home or business you've always envisioned, where comfort, design and functionality intertwine. Together, let's make your space truly exceptional and tailored to your unique needs.

"NC Repair were amazing!!! Their attention to detail is the best. The team was very clean and courteous. They made the experience very easy. We love the outcome of the remodeling.Definitely calling them again."

Oscar J on October 2021

NC Repair and Remodeling is your trusted partner in transforming spaces. With our expertise spanning from residential repairs and renovations to commercial build-outs and service contracts. We're here to make your dreams a reality. Let us help you create the home or business you've always envisioned, where comfort, design and functionality intertwine. Together, let's make your space truly exceptional and tailored to your unique needs.

"NC Repair were amazing!!! Their attention to detail is the best. The team was very clean and courteous. They made the experience very easy. We love the outcome of the remodeling.Definitely calling them again."

Oscar J on October 2021


Avatar for GaaJ
GaaJ
11711 Ash Rd
5.00(
1
)
Approved Pro
GaaJ
11711 Ash Rd
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 years of experience

We’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

""

Debra J on May 2023

We’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

""

Debra J on May 2023


Avatar for Nexera Construction, LLC
Nexera Construction, LLC
P.O. Box 3832
5.00(
5
)
Approved Pro
Nexera Construction, LLC
P.O. Box 3832
5.00(
5
)
Approved Pro
6 years of experience
Free onsite estimate

NexEra Construction is a premium residential remodeling and renovation company committed to delivering exceptional craftsmanship, quality, and client-focused service. We specialize in whole-home remodeling, kitchen and bathroom renovations, basement transformations, and home additions, ensuring every project reflects our high standards of precision and excellence. At NexEra, we believe that every home has the potential for beauty and functionality, and our mission is to bring that vision to life. Whether it’s a complete home makeover, a modernized kitchen, or a luxurious bathroom retreat, we tailor our services to meet a variety of budgets—offering both luxury and value-driven solutions without compromising on quality. With a foundation built on integrity, craftsmanship, and client-first service, NexEra Construction is your trusted partner in transforming houses into dream homes. Let’s build the next era of your home together!

NexEra Construction is a premium residential remodeling and renovation company committed to delivering exceptional craftsmanship, quality, and client-focused service. We specialize in whole-home remodeling, kitchen and bathroom renovations, basement transformations, and home additions, ensuring every project reflects our high standards of precision and excellence. At NexEra, we believe that every home has the potential for beauty and functionality, and our mission is to bring that vision to life. Whether it’s a complete home makeover, a modernized kitchen, or a luxurious bathroom retreat, we tailor our services to meet a variety of budgets—offering both luxury and value-driven solutions without compromising on quality. With a foundation built on integrity, craftsmanship, and client-first service, NexEra Construction is your trusted partner in transforming houses into dream homes. Let’s build the next era of your home together!


Avatar for Expertiers Design & Build, LLC
Expertiers Design & Build, LLC
451 Hungerford Drive, Suite 119-363
4.92(
12
)
Approved Pro
Expertiers Design & Build, LLC
451 Hungerford Drive, Suite 119-363
4.92(
12
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
8 years of experience

Expertiers Design & Build, LLC, is a locally owned and operated company that values honesty, integrity, and treats your home as if it were our own. We offer a variety of home improvement services that are customizable to each individual project. We specialize in additions, bathroom remodels, kitchen remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships, and guarantee your satisfaction!

"Burak and his team did essentially a full gut renovation or our new house in DC. Burak was very attentive to our preferences and offered good insight throughout the project. The quality of the work was very good and Burak did a great job communicating with us throughout the project. The project was complete relatively on time as scheduled and we are very happy with our house."

Tyler M on September 2022

Expertiers Design & Build, LLC, is a locally owned and operated company that values honesty, integrity, and treats your home as if it were our own. We offer a variety of home improvement services that are customizable to each individual project. We specialize in additions, bathroom remodels, kitchen remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships, and guarantee your satisfaction!

"Burak and his team did essentially a full gut renovation or our new house in DC. Burak was very attentive to our preferences and offered good insight throughout the project. The quality of the work was very good and Burak did a great job communicating with us throughout the project. The project was complete relatively on time as scheduled and we are very happy with our house."

Tyler M on September 2022


Krause Design & Construction, Inc.
2513 McComas Avenue
4.94(
3
)
Approved Pro
Krause Design & Construction, Inc.
2513 McComas Avenue
4.94(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
40 years of experience

Krause Design & Construction, Inc. is one of the area's elite high-end home improvement experts, currently specializing in an array of expertise for all of your addition needs. We are a family owned and operated business with decades worth of experience in the industry and are considered by many to be masters within our field. We can either provide the concept for your project, or breathe life into your own vision, thereby creating a true marveled work of beauty. Regardless of the size and scope of your project, we will employ our unique skill set to see your project through fruition. We will treat your property with the same personal degree of care and consideration that we utilize when working on our own properties. We have satisfied repeat customers that routinely call us for new projects. We are always looking for new clients. Feel free to contact us to schedule an initial consultation, we are more than happy to meet with you and discuss your project today!

"You will not be disappointed by Krause Design & Construction. This is a phenomenal company run by an honest, talented, skilled and experienced businessman. No horror stories, no regrets. Krause built what we asked for and stayed on budget and on schedule. Just hire Krause and you will not be disappointed!"

Vince B on May 2016

Krause Design & Construction, Inc. is one of the area's elite high-end home improvement experts, currently specializing in an array of expertise for all of your addition needs. We are a family owned and operated business with decades worth of experience in the industry and are considered by many to be masters within our field. We can either provide the concept for your project, or breathe life into your own vision, thereby creating a true marveled work of beauty. Regardless of the size and scope of your project, we will employ our unique skill set to see your project through fruition. We will treat your property with the same personal degree of care and consideration that we utilize when working on our own properties. We have satisfied repeat customers that routinely call us for new projects. We are always looking for new clients. Feel free to contact us to schedule an initial consultation, we are more than happy to meet with you and discuss your project today!

"You will not be disappointed by Krause Design & Construction. This is a phenomenal company run by an honest, talented, skilled and experienced businessman. No horror stories, no regrets. Krause built what we asked for and stayed on budget and on schedule. Just hire Krause and you will not be disappointed!"

Vince B on May 2016


Avatar for Green State Pro, LLC
Green State Pro, LLC
3 Alderleaf Court
New on HomeAdvisorNew on Angi
Approved Pro
Green State Pro, LLC
3 Alderleaf Court
New on AngiNew on HomeAdvisor
Approved Pro
5 years of experience
Free onsite estimate

Green State Pro LLC invites you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality workmanship will accurately reflect your taste and lifestyle. From conception to completion, we work with you to ensure you have a luxurious space that feels like home. Please call today to set up a free consultation, and see our work at GreenStatePro.com

Green State Pro LLC invites you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality workmanship will accurately reflect your taste and lifestyle. From conception to completion, we work with you to ensure you have a luxurious space that feels like home. Please call today to set up a free consultation, and see our work at GreenStatePro.com

...
Showing 1-10 of 878

Addition to existing structure building services FAQs

How far you can push a room depends on the structure you choose. A cantilevered bump-out can extend 24 inches before building codes require its own footing or foundation. Anything longer needs engineered support and a permit. Check local codes or consult with a structural professional before finalizing plans to ensure your design remains safe and compliant.

Most bump-outs are completed within one to four weeks, even with minimal electrical, plumbing, or HVAC work. Their compact size means less demolition, simpler inspections, and fewer weather-related delays compared to a full-scale addition. Your contractor can provide a more precise timeline once they have determined the scope, materials, and permit schedule, but plan on having the extra square footage ready in approximately a month.

The 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.
built-in outdoor kitchen with grill and sink
Apr 30, 2025
Apr 30, 2025
Budget for outdoor kitchen costs based on factors such as appliances, materials, permits, labor, amenities, kitchen size, customizations, and more.
BLUE TWO STORY HOME
Apr 30, 2025
Apr 30, 2025
Budget for the cost to add a second story based on factors such as size, foundation work, materials, labor, permits, post-construction cleaning, and more.
small bathroom that has been updated in a remodel
Apr 29, 2025
Apr 29, 2025
Budget for the cost to remodel a small bathroom based on factors such as required fixtures, bathroom size, labor, remodel type, site prep, and more.
guest house in the backyard
Apr 27, 2025
Apr 27, 2025
Need to build a guest house? Here’s how much it costs, what factors affect cost, and what to expect.
Kitchen view leading into dining area
Apr 28, 2025
Apr 28, 2025
Use this guide to budget for bump-out addition costs based on factors such as room size, room type, labor, finishes, permits, and more.
House roof with nice window
Apr 28, 2025
Apr 28, 2025
Budget for dormer addition costs based on factors such as roof type, framing, customizations, reinforcement, cladding, labor, and more.
Share project details to get started.