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Find Addition to existing structure builders in Rockville

Avatar for NC Repair and Remodeling

NC Repair and Remodeling

5.00(
2
)
•Approved Pro

NC Repair and Remodeling

5.00(
2
)
•Approved Pro
Customers say: Quick response
5 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

5.00(
2
)
•Approved Pro

GaaJ

5.00(
2
)
•Approved Pro
Customers say: Quick response
20 years of experience
Free onsite estimate

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!

"GAAJ’s team were truly professionals. They listened to our needs and made my grandmother’s vision of a room, a reality. They were passionate and went above and beyond with details on the construction. If you have any building needs, I highly recommend GAAJ!"

Stephanie K on August 2025

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!

"GAAJ’s team were truly professionals. They listened to our needs and made my grandmother’s vision of a room, a reality. They were passionate and went above and beyond with details on the construction. If you have any building needs, I highly recommend GAAJ!"

Stephanie K on August 2025

Avatar for Paradise Construction & Remodeling

Paradise Construction & Remodeling

4.77(
35
)
•Approved Pro

Paradise Construction & Remodeling

4.77(
35
)
•Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
33 years of experience

Welcome to Paradise Home Improvement, we proudly serve the local area, bringing over 10 years of experience in the home improvement field. We promise to provide high quality work to every homeowner that we work with, taking pride in each project that we complete. Call today to schedule your appointment for reliable service!

"We cannot even begin to explain what a wonderful experience we had with Paradise Home Improvement. We interviewed five contractors - some bids were higher, some lower, but we got a fabulous feeling about this family run operation. From the appointments which they were always on time for, to the final product of our new kitchen and office, they were incredible. The construction professionals working in my home were respectful and always cleaned up at the end of the day...on time, on budget and communicating along way any changes or challenges! I would recommend Paradise Home Improvement to anyone who wants a quality product! Thank you for our beautiful kitchen."

Doug H on January 2021

Welcome to Paradise Home Improvement, we proudly serve the local area, bringing over 10 years of experience in the home improvement field. We promise to provide high quality work to every homeowner that we work with, taking pride in each project that we complete. Call today to schedule your appointment for reliable service!

"We cannot even begin to explain what a wonderful experience we had with Paradise Home Improvement. We interviewed five contractors - some bids were higher, some lower, but we got a fabulous feeling about this family run operation. From the appointments which they were always on time for, to the final product of our new kitchen and office, they were incredible. The construction professionals working in my home were respectful and always cleaned up at the end of the day...on time, on budget and communicating along way any changes or challenges! I would recommend Paradise Home Improvement to anyone who wants a quality product! Thank you for our beautiful kitchen."

Doug H on January 2021

Avatar for Masonry Stonework

Masonry Stonework

5.00(
3
)
•Approved Pro

Masonry Stonework

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

We are a locally owned and operated company with over 22 years of industry experience. We value honesty and integrity in all aspects of our business. We offer a variety of Home Improvement services that are customizable to each individual project. We specialize in handyman/carpentry work and a variety of related service and repair 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 with our clients and guarantee your satisfaction!

"Great service and good work!"

Franklin F on February 2023

We are a locally owned and operated company with over 22 years of industry experience. We value honesty and integrity in all aspects of our business. We offer a variety of Home Improvement services that are customizable to each individual project. We specialize in handyman/carpentry work and a variety of related service and repair 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 with our clients and guarantee your satisfaction!

"Great service and good work!"

Franklin F on February 2023

Avatar for WaterStone Kitchen and Bath

WaterStone Kitchen and Bath

5.00(
43
)
•Approved Pro

WaterStone Kitchen and Bath

5.00(
43
)
•Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 local quotes requested

WaterStone Kitchen and Bath specializes in turn key kitchen and bath remodeling. We have been proudly serving the Northern Virginia area since 2005. We provide a one stop shop from preliminary consulting, through design conception and finally to project completion. One of our specialized designers will combine your vision with years of design experience to create a unique space that exceeds your highest expectations. We offer an extensive line of kitchen and bath products that allow us to meet your design needs on any budget. We operate as an in home service provider only. We don't have a show room, so we can pass our low overhead savings on to our clients. If you are interested in remodeling your kitchen or bath, please contact us for a free in home consultation.

"Jeff and his team (Deanna, Jake, Javier, and Rolando) did an excellent job from start to finish. They worked with us and explained every step of the process, helping us with design decisions and selections. The end product, our new kitchen, is of the highest quality. They made the process very easy and quickly closed out our punch list. We're very excited to have our new, updated kitchen and I would very much recommend WaterStone for future work."

Jim S on January 2023

WaterStone Kitchen and Bath specializes in turn key kitchen and bath remodeling. We have been proudly serving the Northern Virginia area since 2005. We provide a one stop shop from preliminary consulting, through design conception and finally to project completion. One of our specialized designers will combine your vision with years of design experience to create a unique space that exceeds your highest expectations. We offer an extensive line of kitchen and bath products that allow us to meet your design needs on any budget. We operate as an in home service provider only. We don't have a show room, so we can pass our low overhead savings on to our clients. If you are interested in remodeling your kitchen or bath, please contact us for a free in home consultation.

"Jeff and his team (Deanna, Jake, Javier, and Rolando) did an excellent job from start to finish. They worked with us and explained every step of the process, helping us with design decisions and selections. The end product, our new kitchen, is of the highest quality. They made the process very easy and quickly closed out our punch list. We're very excited to have our new, updated kitchen and I would very much recommend WaterStone for future work."

Jim S on January 2023

Avatar for Elevate Design Build, LLC

Elevate Design Build, LLC

4.80(
25
)
•Approved Pro

Elevate Design Build, LLC

4.80(
25
)
•Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
36 local quotes requested

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"All the people at Elevate Design and Build were amazing and a pleasure to work with. We doubled the size of our house including tripling the size of the kitchen, knocking out walls to create an open floor plan and added a three car garage with home office over the garage. They even recommended modifications to our original blueprints which were excellent. All their workers friendly and did a first class job. Went totally above and beyond our expectations. One year later we have not had one single problem with any of the work. Total integrity. If any issue came up, the company absorbed the cost - not the customer. Everything they did was done perfectly. We didn't have a single issue or complaint during the entire process. I give them my highest personal recommendation. I would never use anyone else."

Stephen M on August 2024

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"All the people at Elevate Design and Build were amazing and a pleasure to work with. We doubled the size of our house including tripling the size of the kitchen, knocking out walls to create an open floor plan and added a three car garage with home office over the garage. They even recommended modifications to our original blueprints which were excellent. All their workers friendly and did a first class job. Went totally above and beyond our expectations. One year later we have not had one single problem with any of the work. Total integrity. If any issue came up, the company absorbed the cost - not the customer. Everything they did was done perfectly. We didn't have a single issue or complaint during the entire process. I give them my highest personal recommendation. I would never use anyone else."

Stephen M on August 2024

Avatar for Renovec, LLC

Renovec, LLC

4.79(
70
)
•Approved Pro

Renovec, LLC

4.79(
70
)
•Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
27 years of experience

Renovec is a full service construction company. Here at Renovec we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to design your project to fit your vision. Our team is rich with individuals licensed and highly qualified in their respective trade. Our artistic skills combined with our technical knowledge help us deliver a state of the art final product. We look forward to earning your business!

"Great responsiveness and attention to detail. Prompt, professional service. Skilled work. Easy communication. Would gladly hire again."

Kimberly S on April 2022

Renovec is a full service construction company. Here at Renovec we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to design your project to fit your vision. Our team is rich with individuals licensed and highly qualified in their respective trade. Our artistic skills combined with our technical knowledge help us deliver a state of the art final product. We look forward to earning your business!

"Great responsiveness and attention to detail. Prompt, professional service. Skilled work. Easy communication. Would gladly hire again."

Kimberly S on April 2022

Avatar for Blue Rock Remodeling, Inc.

Blue Rock Remodeling, Inc.

4.96(
13
)
•Approved Pro

Blue Rock Remodeling, Inc.

4.96(
13
)
•Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
16 years of experience

Blue Rock Remodeling Inc offers fast, friendly and courteous service. We use only the best products and are always eager to answer your questions and concerns. We have built our reputation on our commitment to providing quality service, which has earned us an impressive reputation with many valuable customers. We take pride in delivering value through top quality, dependable work with excellent price and reliable, honest service.

"We had the pleasure of working with Blue Rock Remodeling. They worked on our kitchen renovation, and we couldn't be happier with the results."

Aviv F on November 2023

Blue Rock Remodeling Inc offers fast, friendly and courteous service. We use only the best products and are always eager to answer your questions and concerns. We have built our reputation on our commitment to providing quality service, which has earned us an impressive reputation with many valuable customers. We take pride in delivering value through top quality, dependable work with excellent price and reliable, honest service.

"We had the pleasure of working with Blue Rock Remodeling. They worked on our kitchen renovation, and we couldn't be happier with the results."

Aviv F on November 2023

Avatar for Best Homes LLC.

Best Homes LLC.

4.94(
17
)
•Approved Pro

Best Homes LLC.

4.94(
17
)
•Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
65 local quotes requested

Here at Best Homes, our company is based on the belief that our customers' satisfaction is of the utmost importance. Our team is driven to meet your needs with professionalism, creativity, and efficiency. Established 2005. Owner: Jonathan Perez Office Manager: Paige Marie Campbell Project Manager: Jefry Perez

"Best Homes LLC just finished our basement and we could not be happier! The quality of work is outstanding and the team was always on time, happy to be here and great at communicating. Jefry is a great project manager and always takes your input regarding placement of different aspects and fixtures. It was a lot of fun working through picking out different tiles, flooring, cabinets, colors, etc to make the space how we envisioned it. We even got to choose the placement of extra outlets and things to make the space fit for our use. The price was very reasonable, especially after being quoted nearly double from another contractor. Our basement turned out absolutely gorgeous and now we have a functional, finished space with a full bathroom and wet bar included. The team was incredibly accommodating, gave a generous allowance for tile and flooring, etc. The project was finished with the quoted price and on time, and we will use Best Homes LLC as our go-to for any contracting needs. 10/10!"

Bradly B on November 2025

Here at Best Homes, our company is based on the belief that our customers' satisfaction is of the utmost importance. Our team is driven to meet your needs with professionalism, creativity, and efficiency. Established 2005. Owner: Jonathan Perez Office Manager: Paige Marie Campbell Project Manager: Jefry Perez

"Best Homes LLC just finished our basement and we could not be happier! The quality of work is outstanding and the team was always on time, happy to be here and great at communicating. Jefry is a great project manager and always takes your input regarding placement of different aspects and fixtures. It was a lot of fun working through picking out different tiles, flooring, cabinets, colors, etc to make the space how we envisioned it. We even got to choose the placement of extra outlets and things to make the space fit for our use. The price was very reasonable, especially after being quoted nearly double from another contractor. Our basement turned out absolutely gorgeous and now we have a functional, finished space with a full bathroom and wet bar included. The team was incredibly accommodating, gave a generous allowance for tile and flooring, etc. The project was finished with the quoted price and on time, and we will use Best Homes LLC as our go-to for any contracting needs. 10/10!"

Bradly B on November 2025

Avatar for Willis Builders Inc

Willis Builders Inc

4.64(
322
)
•Approved Pro

Willis Builders Inc

4.64(
322
)
•Approved Pro
Customers say: Super punctual
53 local quotes requested
22 years of experience

General contractor servicing Montgomery County and parts of Washington DC. Willis Builders is a family owned and operated company, that specializes in additions, kitchen, bathroom and basement remodeling. Our team is skilled in all aspects of residential construction. Willis Builders has built a business on honesty, dedication and hard work. Our goal is to make your renovation dream come true! Contact us today to schedule a free estimate.

"When we moved into our newly purchased townhouse in Germantown, Md, we quickly realized that our kitchen is very old and outdated. We spend a lot of quality time in our kitchen and it had to be remodeled. When we met Willis Builders and their amazing project manager, Willie Acosta, we got our own designers and best advisors too. Everyone on their team was professional, courteous, kind, polite and knowledgeable. We are happy with our new countertops, beautiful backslash and kitchen floors. They also helped us fix our deck and bring it back to code and best condition. Thank you guys for everything ❤️ "

Natasha P on January 2026

General contractor servicing Montgomery County and parts of Washington DC. Willis Builders is a family owned and operated company, that specializes in additions, kitchen, bathroom and basement remodeling. Our team is skilled in all aspects of residential construction. Willis Builders has built a business on honesty, dedication and hard work. Our goal is to make your renovation dream come true! Contact us today to schedule a free estimate.

"When we moved into our newly purchased townhouse in Germantown, Md, we quickly realized that our kitchen is very old and outdated. We spend a lot of quality time in our kitchen and it had to be remodeled. When we met Willis Builders and their amazing project manager, Willie Acosta, we got our own designers and best advisors too. Everyone on their team was professional, courteous, kind, polite and knowledgeable. We are happy with our new countertops, beautiful backslash and kitchen floors. They also helped us fix our deck and bring it back to code and best condition. Thank you guys for everything ❤️ "

Natasha P on January 2026

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FAQs for addition to existing structure building service projects in Rockville, 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 Rockville, 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.

See all articles