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Find Addition to existing structure builders in Gaithersburg

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
35 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


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 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


Val-U-Homes, LLC

5.00(
20
)
Approved Pro

Val-U-Homes, LLC

5.00(
20
)
Approved Pro
Customers say: Terrific value
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
18 local quotes requested

Val-U-Homes, LLC, specializes in home Additions and remodeling in Montgomery County and the surrounding areas. We take pride in providing new home quality on all of our projects

"I hired them for home renovation, and they did a great job. They were very respectful and understanding. When they were done everything turned out great!"

Mistere F on July 2024

Val-U-Homes, LLC, specializes in home Additions and remodeling in Montgomery County and the surrounding areas. We take pride in providing new home quality on all of our projects

"I hired them for home renovation, and they did a great job. They were very respectful and understanding. When they were done everything turned out great!"

Mistere F on July 2024


Avatar for River View

River View

4.64(
14
)
Approved Pro

River View

4.64(
14
)
Approved Pro
Customers say: Quality work
78 local quotes requested
2 years of experience

At River View Construction, we pride ourselves on our exceptional renovations, which are characterized by a comprehensive range of services, a skilled team, and personalized solutions tailored to your unique needs. We are dedicated to providing quality assurance, proactive communication, and meticulous attention to detail, all while ensuring that your project is completed on time. Driven by our commitment to customer satisfaction, we invite you to let us turn your vision into reality. Request a quote today and experience the unmatched River View difference!

"We write this review as a sigh of relief now that our renovation project with River View is finally complete. The quality of the final work is excellent, and the construction crew, architect, and county inspector were all great to work with. The original crew we worked with, led by Edwin, were so hardworking, friendly, thorough, and fast. That's what really pushed us from 2 to 3 stars. However, the process getting here was frustrating and unnecessarily chaotic. Timeline & Communication Issues: Initial promise: We were clear that the renovation had to allow us to live in our home during construction and be completed before Christmas. Early communication: Our original project manager, Cris, was personable, and early communication seemed fine, if a bit informal and sometimes inappropriately personal. Major miscommunication: Near the holidays, we discovered that the plans submitted included cutting into the roof — something we explicitly said we didn’t want. This contradicted verbal assurances and caused major last-minute changes. Project Management Failures: Poor planning and oversight: Cris and the architect’s plan didn’t align with the construction work. We had to get involved directly with the county to fix errors. Paperwork errors: Incorrect submissions to the county added delays and confusion, which we had to monitor ourselves. Last-minute scramble: We were cleaning up dust on Christmas Eve due to these planning failures. Personnel Turnover & Lack of Handoff: Cris leaves the company: No proper handover to James, the new PM, who was unfamiliar with our project. Crew replaced: The original crew, who were great, were gone; new crew had no context or direction. James leaves: Another handoff with no context — the third PM had no idea about our project or its outstanding items. Escalation mishandled: When we raised our concerns with Kyle, the CEO, the response felt dismissive, with no accountability for the previous missteps. In summary, it's a beautiful end result... but we’re glad it’s over. The process left us frustrated, confused, and frankly, exhausted."

Brian M on April 2025

At River View Construction, we pride ourselves on our exceptional renovations, which are characterized by a comprehensive range of services, a skilled team, and personalized solutions tailored to your unique needs. We are dedicated to providing quality assurance, proactive communication, and meticulous attention to detail, all while ensuring that your project is completed on time. Driven by our commitment to customer satisfaction, we invite you to let us turn your vision into reality. Request a quote today and experience the unmatched River View difference!

"We write this review as a sigh of relief now that our renovation project with River View is finally complete. The quality of the final work is excellent, and the construction crew, architect, and county inspector were all great to work with. The original crew we worked with, led by Edwin, were so hardworking, friendly, thorough, and fast. That's what really pushed us from 2 to 3 stars. However, the process getting here was frustrating and unnecessarily chaotic. Timeline & Communication Issues: Initial promise: We were clear that the renovation had to allow us to live in our home during construction and be completed before Christmas. Early communication: Our original project manager, Cris, was personable, and early communication seemed fine, if a bit informal and sometimes inappropriately personal. Major miscommunication: Near the holidays, we discovered that the plans submitted included cutting into the roof — something we explicitly said we didn’t want. This contradicted verbal assurances and caused major last-minute changes. Project Management Failures: Poor planning and oversight: Cris and the architect’s plan didn’t align with the construction work. We had to get involved directly with the county to fix errors. Paperwork errors: Incorrect submissions to the county added delays and confusion, which we had to monitor ourselves. Last-minute scramble: We were cleaning up dust on Christmas Eve due to these planning failures. Personnel Turnover & Lack of Handoff: Cris leaves the company: No proper handover to James, the new PM, who was unfamiliar with our project. Crew replaced: The original crew, who were great, were gone; new crew had no context or direction. James leaves: Another handoff with no context — the third PM had no idea about our project or its outstanding items. Escalation mishandled: When we raised our concerns with Kyle, the CEO, the response felt dismissive, with no accountability for the previous missteps. In summary, it's a beautiful end result... but we’re glad it’s over. The process left us frustrated, confused, and frankly, exhausted."

Brian M on April 2025


PatchWorx.Pro

5.00(
6
)
Approved Pro

PatchWorx.Pro

5.00(
6
)
Approved Pro
Customers say: Quick response
59 local quotes requested

Our Satisfied Customers Back Our Drywall Repair and Home Remodeling Team! Not all home improvement companies guarantee their work. We do! This is because at PATCHWORX.PRO we are confident in the quality of our work. Our customers appreciate this, and it sets us apart from the competition. We use only the best materials, and we have a team of skilled professionals who know how to get the job done right. With our Lifetime Warranty, our customers can be sure they are getting what they pay for. Call or click for your quote today!

"The person they sent did an excellent job repairing my drywall in the garage and was very accommodating with my minor request for a thorough wall clean-up."

Susan L on July 2025

Our Satisfied Customers Back Our Drywall Repair and Home Remodeling Team! Not all home improvement companies guarantee their work. We do! This is because at PATCHWORX.PRO we are confident in the quality of our work. Our customers appreciate this, and it sets us apart from the competition. We use only the best materials, and we have a team of skilled professionals who know how to get the job done right. With our Lifetime Warranty, our customers can be sure they are getting what they pay for. Call or click for your quote today!

"The person they sent did an excellent job repairing my drywall in the garage and was very accommodating with my minor request for a thorough wall clean-up."

Susan L on July 2025


Avatar for Daley Home Improvement Services, LLC

Daley Home Improvement Services, LLC

4.21(
7
)
Approved Pro

Daley Home Improvement Services, LLC

4.21(
7
)
Approved Pro
Customers say: Terrific value
11 years of experience
Free onsite estimate

Treasure Protection Management, Inc. 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 quality home improvement services. You will find us to be competitively priced with close attention to the details of every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction! Our team, expertise, and significant industry experience allows us to help you to complete your basic remodeling project, to the more complex multi-story addition, in a professional, cost efficient and timely manner.

"Treasure Protection Management, Inc. (TPMI) and Daley Home Improvement Services, LLC (DHIS) are the worst contractors I have ever hired to remodel my kitchen. Avoid them at all costs! Mike Daley, the salesperson and CEO of DHIS, will say anything to get you to sign a contract. What was estimated to be a 2-week project has now stretched to 5 1/2 weeks, and it is still not finished. Issues encountered: 1.The kitchen design was incorrect. 2. DHIS employs unqualified workers. 3. Cabinet doors were installed to open the wrong way. 4. DHIS employees had to return multiple times to correct their mistakes. 5. My house was damaged during the demolition/installation process 6. Subcontractors did sloppy work, such as installing a sink with broken clips. 7. Change orders were not presented before additional work began, in violation of their policy, leading to unexpected charges. More issues emerged after DHIS employees left. In conclusion, DHIS is not a company you want to hire for any remodelin Update on Daley Home Improvement Service LLC (11/13/2025) Despite repeated requests, Mike Daley has failed to provide the electronic permit I paid for. After contacting the Department of Permit Services (DPS), I was informed that no permit was ever pulled for my property. This means the money I paid was pocketed instead of being used to secure the proper electrical permit ? a serious violation that raises major safety concerns for my family and home. I have formally reported Mike Daley and Daley Home Improvement Service LLC to MHIC (Maryland Home Improvement Commission) and the Office of Consumer Protection (OCP). ? Homeowners beware: If you previously hired DHIS for remodeling work, demand a copy of the permit you paid for and confirm that the final inspection was completed. Do not assume the paperwork was handled properly. I will provide further updates once MHIC completes its investigation."

Nhan L on December 2024

Treasure Protection Management, Inc. 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 quality home improvement services. You will find us to be competitively priced with close attention to the details of every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction! Our team, expertise, and significant industry experience allows us to help you to complete your basic remodeling project, to the more complex multi-story addition, in a professional, cost efficient and timely manner.

"Treasure Protection Management, Inc. (TPMI) and Daley Home Improvement Services, LLC (DHIS) are the worst contractors I have ever hired to remodel my kitchen. Avoid them at all costs! Mike Daley, the salesperson and CEO of DHIS, will say anything to get you to sign a contract. What was estimated to be a 2-week project has now stretched to 5 1/2 weeks, and it is still not finished. Issues encountered: 1.The kitchen design was incorrect. 2. DHIS employs unqualified workers. 3. Cabinet doors were installed to open the wrong way. 4. DHIS employees had to return multiple times to correct their mistakes. 5. My house was damaged during the demolition/installation process 6. Subcontractors did sloppy work, such as installing a sink with broken clips. 7. Change orders were not presented before additional work began, in violation of their policy, leading to unexpected charges. More issues emerged after DHIS employees left. In conclusion, DHIS is not a company you want to hire for any remodelin Update on Daley Home Improvement Service LLC (11/13/2025) Despite repeated requests, Mike Daley has failed to provide the electronic permit I paid for. After contacting the Department of Permit Services (DPS), I was informed that no permit was ever pulled for my property. This means the money I paid was pocketed instead of being used to secure the proper electrical permit ? a serious violation that raises major safety concerns for my family and home. I have formally reported Mike Daley and Daley Home Improvement Service LLC to MHIC (Maryland Home Improvement Commission) and the Office of Consumer Protection (OCP). ? Homeowners beware: If you previously hired DHIS for remodeling work, demand a copy of the permit you paid for and confirm that the final inspection was completed. Do not assume the paperwork was handled properly. I will provide further updates once MHIC completes its investigation."

Nhan L on December 2024


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

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