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 Walkersville

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 Fixer Smart Services, LLC
Fixer Smart Services, LLC
11642 Partridge Lane
New on HomeAdvisorNew on Angi
Approved Pro
Fixer Smart Services, LLC
11642 Partridge Lane
New on AngiNew on HomeAdvisor
Approved Pro
76 local quotes requested
5 years of experience

We are 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 services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

We are 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 services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!


Avatar for Best Homes
Best Homes
233 Morrisons Road
4.64(
176
)
Approved Pro
Best Homes
233 Morrisons Road
4.64(
176
)
Approved Pro
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
59 local quotes requested

Here at Best Homes, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. Please call today for a quote and thank you for doing so.

"We had an exceptional experience with Johnathan, Jeffry, and their team. Their professionalism, friendliness, and expertise stood out from the start to the finish of our basement project. The process was smooth, transparent, and free of surprises, with clear cost and material outlines. We appreciated their flexibility in allowing us to choose different materials and only charging the price difference. When we added more work mid-project, they were accommodating and maintained high-quality workmanship. They provided a wide selection of cabinets, flooring, tiles, mirrors, and bathroom faucets. The project was completed on time and within budget. We are thrilled with the results and plan to work with them again. Everyone who has seen our basement loves it! Overall, we highly recommend their services."

Sammaad S on February 2025

Here at Best Homes, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. Please call today for a quote and thank you for doing so.

"We had an exceptional experience with Johnathan, Jeffry, and their team. Their professionalism, friendliness, and expertise stood out from the start to the finish of our basement project. The process was smooth, transparent, and free of surprises, with clear cost and material outlines. We appreciated their flexibility in allowing us to choose different materials and only charging the price difference. When we added more work mid-project, they were accommodating and maintained high-quality workmanship. They provided a wide selection of cabinets, flooring, tiles, mirrors, and bathroom faucets. The project was completed on time and within budget. We are thrilled with the results and plan to work with them again. Everyone who has seen our basement loves it! Overall, we highly recommend their services."

Sammaad S on February 2025


Avatar for Monarch Design International, LLC
Monarch Design International, LLC
6625 Cambria Court
5.00(
1
)
Approved Pro
Monarch Design International, LLC
6625 Cambria Court
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 years of experience

Monarch Design International, LLC 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.

"Communication was great.They really give the customer what they want.A joy to work with."

Wilbur D on September 2022

Monarch Design International, LLC 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.

"Communication was great.They really give the customer what they want.A joy to work with."

Wilbur D on September 2022


Herrod Brothers
3670 Ridgeview Road
4.17(
15
)
Approved Pro
Herrod Brothers
3670 Ridgeview Road
4.17(
15
)
Approved Pro
Customers say: Quick response
13 local quotes requested
46 years of experience

We are a locally owned and operated company with over 20 years of industry experience. 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!

"We hired Herrod Brothers to remodel 2 bathrooms for us. They perform all the work without the use of subcontractors except for the shower doors. They take great pride in their work and it is evident in the quality and workmanship. They are very polite and respectful of your property. We would definitely hire them again."

Terre R on March 2022

We are a locally owned and operated company with over 20 years of industry experience. 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!

"We hired Herrod Brothers to remodel 2 bathrooms for us. They perform all the work without the use of subcontractors except for the shower doors. They take great pride in their work and it is evident in the quality and workmanship. They are very polite and respectful of your property. We would definitely hire them again."

Terre R on March 2022


Avatar for Leizear Carpentry & Construction
Leizear Carpentry & Construction
1340 Greenfield Rd
New on HomeAdvisorNew on Angi
Approved Pro
Leizear Carpentry & Construction
1340 Greenfield Rd
New on AngiNew on HomeAdvisor
Approved Pro
4 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today! Ask about our veteran's discount!

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today! Ask about our veteran's discount!


Avatar for R W Construction, Inc.
R W Construction, Inc.
8426 Hemler Road
4.85(
41
)
Approved Pro
R W Construction, Inc.
8426 Hemler Road
4.85(
41
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
41 years of experience

RW Construction, Inc., is a comprehensive home improvement company serving Frederick, Maryland and surrounding counties. We specialize in residential remodels which include bathrooms, basements and kitchens. Not only are we highly capable and willing to complete your remodel project to the homeowner�s specifications, but are also very willing to take care of all your handyman needs. If your homes project requires truly the best, than look no further than RW Construction, Inc. For your in home estimate, feel free to contact us today.

"RW CONSTRUCTION was fantastic. Rick and his crew were professional, reliable and fair. Hired him once - great work! So I hired him again! Would definitely recommendâ ¦and have. Thanks for some great work, Rick!"

Jodi O on March 2023

RW Construction, Inc., is a comprehensive home improvement company serving Frederick, Maryland and surrounding counties. We specialize in residential remodels which include bathrooms, basements and kitchens. Not only are we highly capable and willing to complete your remodel project to the homeowner�s specifications, but are also very willing to take care of all your handyman needs. If your homes project requires truly the best, than look no further than RW Construction, Inc. For your in home estimate, feel free to contact us today.

"RW CONSTRUCTION was fantastic. Rick and his crew were professional, reliable and fair. Hired him once - great work! So I hired him again! Would definitely recommendâ ¦and have. Thanks for some great work, Rick!"

Jodi O on March 2023


Avatar for Dreamville Remodeling
Dreamville Remodeling
16011 Redland Rd
4.98(
25
)
Approved Pro
Dreamville Remodeling
16011 Redland Rd
4.98(
25
)
Approved Pro
Customers say: Quick response
34 years of experience
Free onsite estimate

Dreamville Remodeling is a locally family owned and operated company that values honesty and integrity in all aspects of our business. We take great pride in our experience, expertise, quality, and customer service. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!  

"The work (basement finishing and electrical upgrade) was excellent. The bid was appropriate and the work was completed in the timeframe discussed. We appreciate the professionalism of the project manager and crew and are delighted with the results."

Marge H on December 2024

Dreamville Remodeling is a locally family owned and operated company that values honesty and integrity in all aspects of our business. We take great pride in our experience, expertise, quality, and customer service. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!  

"The work (basement finishing and electrical upgrade) was excellent. The bid was appropriate and the work was completed in the timeframe discussed. We appreciate the professionalism of the project manager and crew and are delighted with the results."

Marge H on December 2024


Avatar for CLASSIC HOME ADVISORS LLC
CLASSIC HOME ADVISORS LLC
5722 Mains Ln
5.00(
1
)
Approved Pro
CLASSIC HOME ADVISORS LLC
5722 Mains Ln
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2 years of experience

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"I got several proposals from different companies to address my basement flooding and foundation issues. Caleb, with Classic Home Advisors, was the best from the very beginning. He understood the issue and explained to me a few options available to me to address the issues with my basement flooding. The proposal was clear and indicated exactly what and how the work was going to be performed. It took 1 week from start to finish and throughout the execution of the project, I was kept informed of their progress. More important than everything, I already can tell that the repairs to my basement were successful. We have had 2 main rain events since they finished the work and the basement is dry. The foundation repairs looks solid. Iâ m extremely happy with the final outcome of my basement project. Classic Home Advisors did an outstanding job. I have no reservations in recommending them for any of your water proofing projects, or for that matter, any home improvement projects."

Nitto R on March 2024

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"I got several proposals from different companies to address my basement flooding and foundation issues. Caleb, with Classic Home Advisors, was the best from the very beginning. He understood the issue and explained to me a few options available to me to address the issues with my basement flooding. The proposal was clear and indicated exactly what and how the work was going to be performed. It took 1 week from start to finish and throughout the execution of the project, I was kept informed of their progress. More important than everything, I already can tell that the repairs to my basement were successful. We have had 2 main rain events since they finished the work and the basement is dry. The foundation repairs looks solid. Iâ m extremely happy with the final outcome of my basement project. Classic Home Advisors did an outstanding job. I have no reservations in recommending them for any of your water proofing projects, or for that matter, any home improvement projects."

Nitto R on March 2024


Avatar for BasementRemodeling.com
BasementRemodeling.com
1680 E Gude Dr
4.74(
253
)
Approved Pro
BasementRemodeling.com
1680 E Gude Dr
4.74(
253
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
334 local quotes requested

BasementRemodeling.com / Basement Masters - licensed and insured, award winning Basement Remodeling and Finishing company. Highest rated basement renovation contractor in Maryland. Finished Basements are our specialty. We specialize in custom basement remodeling and finishing and other large-scale remodels. We offer free in home and over-the-phone estimate and consultation. Here at BasementRemodeling.com we believe that QUALITY AND EXCEPTIONAL CRAFTSMANSHIP must always come along with AFFORDABILITY. keywords: finished basement basements remodeling.

"Job was performed in a timely manner. Great communication throughout project. Site kept clean during construction."

Erin K on October 2024

BasementRemodeling.com / Basement Masters - licensed and insured, award winning Basement Remodeling and Finishing company. Highest rated basement renovation contractor in Maryland. Finished Basements are our specialty. We specialize in custom basement remodeling and finishing and other large-scale remodels. We offer free in home and over-the-phone estimate and consultation. Here at BasementRemodeling.com we believe that QUALITY AND EXCEPTIONAL CRAFTSMANSHIP must always come along with AFFORDABILITY. keywords: finished basement basements remodeling.

"Job was performed in a timely manner. Great communication throughout project. Site kept clean during construction."

Erin K on October 2024

...
Showing 1-10 of 431

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.