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Find Addition to existing structure builders in Rockville

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 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


Krause Design & Construction, Inc.

4.94(
3
)
Approved Pro

Krause Design & Construction, Inc.

4.94(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
41 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 Managed Renovations

Managed Renovations

5.00(
16
)
Approved Pro

Managed Renovations

5.00(
16
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
14 local quotes requested

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 JVF Construction, LLC

JVF Construction, LLC

4.90(
41
)
Approved Pro

JVF Construction, LLC

4.90(
41
)
Approved Pro
Customers say: Terrific value
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
8 years of experience

JVF Construction, LLC is a locally owned and operated business that values honesty and integrity. We pride our selves on providing detail oriented construction and master craftsmanship to bring our client?s project to life. We assure all of our clients a very unique, and personal experience that emphasizes on delivering safe, timely and cost effective projects. Our success is your success!

"Amazing work, on time, knowledgeable and professional. I had to tear down a load bearing wall and went with JVF construction bcs they had the experience and knowledge for the job. I had a great experience and I dont regret my decision."

Joseph K on March 2024

JVF Construction, LLC is a locally owned and operated business that values honesty and integrity. We pride our selves on providing detail oriented construction and master craftsmanship to bring our client?s project to life. We assure all of our clients a very unique, and personal experience that emphasizes on delivering safe, timely and cost effective projects. Our success is your success!

"Amazing work, on time, knowledgeable and professional. I had to tear down a load bearing wall and went with JVF construction bcs they had the experience and knowledge for the job. I had a great experience and I dont regret my decision."

Joseph K on March 2024


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 D&G Remodeling

D&G Remodeling

5.00(
35
)
Approved Pro

D&G Remodeling

5.00(
35
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

Electric company established in 2016. Family owned. Commercial and residential electrical repairs & new installations. Renovations & additions. Main panel upgrades, low voltage lighting installations, car charging stations, and lot more. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"They were great—came out same day, reasonable price, and they were very nice and easy to work with. Will def use again for any electrical needs."

Ellie F on August 2025

Electric company established in 2016. Family owned. Commercial and residential electrical repairs & new installations. Renovations & additions. Main panel upgrades, low voltage lighting installations, car charging stations, and lot more. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"They were great—came out same day, reasonable price, and they were very nice and easy to work with. Will def use again for any electrical needs."

Ellie F on August 2025


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
29 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 Go Contractors, LLC

Go Contractors, LLC

4.12(
549
)
Approved Pro

Go Contractors, LLC

4.12(
549
)
Approved Pro
Customers say: Terrific value
41 years of experience
Free onsite estimate

Go Contractors LLC are specialists in a wide range of areas within residential construction and remodeling. There is no need to call any other contractor for your project as we have extensive experience working with residential projects in its entirety. Our goal is to make our clients satisfied, complete a high-quality job, and maintain a clean and organized workplace. Most importantly we hold ourselves accountable to maintain the respect, honesty, and good communication with our clients daily. Go Contractors LLC has 35 years of experience in this field of work. The owner of the company constantly maintains the project a priority as he efficiently checks for every detail of the project's progress. He believes it is an important aspect for the owner of the company to be involved and to ensure the client receives a satisfactory, high-quality home project.

"Mr. Gomez and his crew worked quickly and efficiently. The final price was just 5% above the initial estimate, even when it involved some additional tasks not included in the original work agreement. The only minor issue that it took two weeks after the bulk of the work was done for the crew to come again to finish the final work. Nevertheless, I would be happy to hire Go Contractors again."

Patrick H on June 2025

Go Contractors LLC are specialists in a wide range of areas within residential construction and remodeling. There is no need to call any other contractor for your project as we have extensive experience working with residential projects in its entirety. Our goal is to make our clients satisfied, complete a high-quality job, and maintain a clean and organized workplace. Most importantly we hold ourselves accountable to maintain the respect, honesty, and good communication with our clients daily. Go Contractors LLC has 35 years of experience in this field of work. The owner of the company constantly maintains the project a priority as he efficiently checks for every detail of the project's progress. He believes it is an important aspect for the owner of the company to be involved and to ensure the client receives a satisfactory, high-quality home project.

"Mr. Gomez and his crew worked quickly and efficiently. The final price was just 5% above the initial estimate, even when it involved some additional tasks not included in the original work agreement. The only minor issue that it took two weeks after the bulk of the work was done for the crew to come again to finish the final work. Nevertheless, I would be happy to hire Go Contractors again."

Patrick H on June 2025

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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.