Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Wilmington, DE

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.

Find Addition to existing structure builders in Wilmington

Avatar for AW Viohl Contracting LLC

AW Viohl Contracting LLC

950 Ridge Road
4.90(
20
)
•Approved Pro

AW Viohl Contracting LLC

950 Ridge Road
4.90(
20
)
•Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
25 local quotes requested

AW Viohl Contracting is a local, family owned and operated business. We have built our reputation one quality project at a time. No job is too big or small. We are a fully licensed, insured and bonded general contracting firm specializing in home improvements, repairs, and renovations. The list below details many of the services we offer, major and minor, but is by no means a comprehensive list. Call us to discuss your next project.

"Very well! Everyone performed the work very well and cleaned up after. They added a sunroom for me last year and I had such a good experience with them that when we needed some kitchen renovations done, I called Andrew again."

Dawn F on November 2021

AW Viohl Contracting is a local, family owned and operated business. We have built our reputation one quality project at a time. No job is too big or small. We are a fully licensed, insured and bonded general contracting firm specializing in home improvements, repairs, and renovations. The list below details many of the services we offer, major and minor, but is by no means a comprehensive list. Call us to discuss your next project.

"Very well! Everyone performed the work very well and cleaned up after. They added a sunroom for me last year and I had such a good experience with them that when we needed some kitchen renovations done, I called Andrew again."

Dawn F on November 2021

Avatar for Mule Construction LLC

Mule Construction LLC

505 Prospect Avenue
5.00(
5
)
•Approved Pro

Mule Construction LLC

505 Prospect Avenue
5.00(
5
)
•Approved Pro
1 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. Our top priority is customer satisfaction and will go the extra mile. We are experts in our trade and will work with you from conception to completion. We strive in making all clients, repeat clients. Call us today you’ll be relieved you did. Thank you

"Very professional, beautiful work and such a pleasure to deal with. Thank you so much for a job well done!"

Larry S on August 2025

We pride our company on reliability, great communication, integrity, and quality work. Our top priority is customer satisfaction and will go the extra mile. We are experts in our trade and will work with you from conception to completion. We strive in making all clients, repeat clients. Call us today you’ll be relieved you did. Thank you

"Very professional, beautiful work and such a pleasure to deal with. Thank you so much for a job well done!"

Larry S on August 2025

GJP DEVELOPERS INC

PO BOX141
4.76(
21
)
•Approved Pro

GJP DEVELOPERS INC

PO BOX141
4.76(
21
)
•Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
54 local quotes requested

New residential, and commercial construction. Home remodeling. No job is too big or small. Please call our office today to schedule your FREE estimate at 610-659-3750 We have been in business since 1989. We would provide any previous work we have done over the years at customers request. GJP INC. provides top notch building and remodeling services at an affordable price. We get the job done fast and provide only the best craftsmanship in the business. References are available upon request.

"We had an excellent experience working with GJP Developers and are happy to recommend them. Gary gave us great advice about what could be done within our budget and offered suggestions that truly added to the quality of the outcome for the space we were working with. His staff have a superior work ethic and Gary checked in on site often to be sure the project was moving forward and consistently kept us up to date on the progress of the renovation. When we asked for some changes to the original plan he was courteous and patient in providing us with what we needed. We were really surprised at how quickly the renovation progressed and how the quality of work was maintained along the way. We highly recommend GJP Developers and would have no hesitation hiring them again for other home remodeling we are considering."

Christine L on November 2024

New residential, and commercial construction. Home remodeling. No job is too big or small. Please call our office today to schedule your FREE estimate at 610-659-3750 We have been in business since 1989. We would provide any previous work we have done over the years at customers request. GJP INC. provides top notch building and remodeling services at an affordable price. We get the job done fast and provide only the best craftsmanship in the business. References are available upon request.

"We had an excellent experience working with GJP Developers and are happy to recommend them. Gary gave us great advice about what could be done within our budget and offered suggestions that truly added to the quality of the outcome for the space we were working with. His staff have a superior work ethic and Gary checked in on site often to be sure the project was moving forward and consistently kept us up to date on the progress of the renovation. When we asked for some changes to the original plan he was courteous and patient in providing us with what we needed. We were really surprised at how quickly the renovation progressed and how the quality of work was maintained along the way. We highly recommend GJP Developers and would have no hesitation hiring them again for other home remodeling we are considering."

Christine L on November 2024

Handyman Guy

5.00(
2
)
•Approved Pro

Handyman Guy

5.00(
2
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
46 local quotes requested

We guarantee your satisfaction. We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!

"I am 100 % satisfied with the work Handyman Guy and his crew did in my kitchen and bathroom remodel. In fact, I have hired them again and again for many things throughout my home. Very professional and highly skilled. I would recommend The Handyman Guy for anyone looking for quality renovations and repairs."

Krista Z on April 2023

We guarantee your satisfaction. We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!

"I am 100 % satisfied with the work Handyman Guy and his crew did in my kitchen and bathroom remodel. In fact, I have hired them again and again for many things throughout my home. Very professional and highly skilled. I would recommend The Handyman Guy for anyone looking for quality renovations and repairs."

Krista Z on April 2023

Avatar for RF Home Remodeling LLC

RF Home Remodeling LLC

Located In:
5.00(
10
)
•Approved Pro

RF Home Remodeling LLC

Located In:
5.00(
10
)
•Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
26 local quotes requested

Transform your kitchen and bathroom with RF Home Remodeling LLC. Our expert team in Philadelphia specializes in remodeling projects, bringing your vision to life. With our attention to detail and commitment to quality, we'll create a space that exceeds your expectations. Contact us today to start your home transformation journey.

"Nice work at a fair price. I would use them again and recommend to others."

Chris O on October 2024

Transform your kitchen and bathroom with RF Home Remodeling LLC. Our expert team in Philadelphia specializes in remodeling projects, bringing your vision to life. With our attention to detail and commitment to quality, we'll create a space that exceeds your expectations. Contact us today to start your home transformation journey.

"Nice work at a fair price. I would use them again and recommend to others."

Chris O on October 2024

Avatar for G D Rhoads Co

G D Rhoads Co

156 Bridle Path Ln
4.70(
20
)
•Approved Pro

G D Rhoads Co

156 Bridle Path Ln
4.70(
20
)
•Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
167 local quotes requested

Full service remodeling and renovation contractor specializing in custom kitchens and bathrooms, finished basements and much more. Williamson Trade School graduate

"Team did a great job from setting up keeping the area clean. They did quality work. We’re very happy with everything."

Don R on April 2023

Full service remodeling and renovation contractor specializing in custom kitchens and bathrooms, finished basements and much more. Williamson Trade School graduate

"Team did a great job from setting up keeping the area clean. They did quality work. We’re very happy with everything."

Don R on April 2023

Avatar for R.A BARKER

R.A BARKER

313 S Walnut St
4.67(
12
)
•Approved Pro

R.A BARKER

313 S Walnut St
4.67(
12
)
•Approved Pro
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
66 local quotes requested

R a Barker general contractor home remodeling. We offer everything from the ground up foundations, concrete, framing, siding, roofing, windows all interior work drywall, painting, trim, full kitchens, bathrooms additions to small handyman services. We want to provide quality services at a fair prices we sell products and services that home owners want or need nothing they dont. We have been servicing the area for more then 18 years owner operated small business

"It was completed on time and beautifully"

Danielle L on February 2023

R a Barker general contractor home remodeling. We offer everything from the ground up foundations, concrete, framing, siding, roofing, windows all interior work drywall, painting, trim, full kitchens, bathrooms additions to small handyman services. We want to provide quality services at a fair prices we sell products and services that home owners want or need nothing they dont. We have been servicing the area for more then 18 years owner operated small business

"It was completed on time and beautifully"

Danielle L on February 2023

Tile Pros Home Improvements LLC

1704 School Ln
5.00(
50
)
•Approved Pro

Tile Pros Home Improvements LLC

1704 School Ln
5.00(
50
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
399 local quotes requested

Thank you for visiting Tile Pro S. We are more than happy to answer any questions you may have. Let us tell you a little about ourselves. Our priority and what we strive for is to give you the best service, professionally, respectfully, being punctual and clean. We would like to be able to service your home in a variety of areas and continue to build long lasting business relationships in which you would feel confident to refer a friend or family. We have over 15 years of experience and our goal is always to have a happy customer! Thank you!

"They did a good job removing the existing tile and installing the new hexagon shaped tiles in the foyer. I would use them again for other projects."

Kalloyan S on July 2025

Thank you for visiting Tile Pro S. We are more than happy to answer any questions you may have. Let us tell you a little about ourselves. Our priority and what we strive for is to give you the best service, professionally, respectfully, being punctual and clean. We would like to be able to service your home in a variety of areas and continue to build long lasting business relationships in which you would feel confident to refer a friend or family. We have over 15 years of experience and our goal is always to have a happy customer! Thank you!

"They did a good job removing the existing tile and installing the new hexagon shaped tiles in the foyer. I would use them again for other projects."

Kalloyan S on July 2025

Avatar for Weber Home Improvement

Weber Home Improvement

5.00(
18
)
•Approved Pro

Weber Home Improvement

5.00(
18
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
37 years of experience

Weber Home Improvements is a family-owned business that has been providing high-quality home improvement services for over 30 years. We specialize in bathroom and kitchen remodeling, custom trim work, doors, window replacement, decks, and more. Our team of craftsmen are dedicated to making sure that each project is completed to the highest standards. At Weber Home Improvements, we believe in treating each customer like family. Our goal is to provide you with the best quality work, while also making sure that your project is completed on time and within budget. We take pride in our work and look forward to having the opportunity to help you with your home improvement needs.

"My bathroom needed replacement not remodeling. Taken down to the studs, literally everything from the walls, ceiling, floor and shower stall needed replacement. A significant amount of both plumbing and electrical work was required. The quality of the work is outstanding. I would highly recommend this business and will not hesitate to use them in the future."

Danny O on June 2025

Weber Home Improvements is a family-owned business that has been providing high-quality home improvement services for over 30 years. We specialize in bathroom and kitchen remodeling, custom trim work, doors, window replacement, decks, and more. Our team of craftsmen are dedicated to making sure that each project is completed to the highest standards. At Weber Home Improvements, we believe in treating each customer like family. Our goal is to provide you with the best quality work, while also making sure that your project is completed on time and within budget. We take pride in our work and look forward to having the opportunity to help you with your home improvement needs.

"My bathroom needed replacement not remodeling. Taken down to the studs, literally everything from the walls, ceiling, floor and shower stall needed replacement. A significant amount of both plumbing and electrical work was required. The quality of the work is outstanding. I would highly recommend this business and will not hesitate to use them in the future."

Danny O on June 2025

Avatar for Apex Home Remodeling

Apex Home Remodeling

5.00(
1
)
•Approved Pro

Apex Home Remodeling

5.00(
1
)
•Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
491 local quotes requested

Hi! We are Apex Home Remodeling! We are a full-service contractor specializing in Kitchens, Bathrooms, Additions, Basements, Decks & Fences, Doors & Windows, AND much more! Refresh Your Home & Refresh Your Mind With Apex!

"Great work, highly recommended!! Apex renovated all of the bathrooms in our home down to the studs and completely redid them for us, one of which included moving a wall and layout change to expand. From beginning to end, Mike and his team were a pleasure to work with. We received detailed cost estimates that were accurate and competitive with other contractors we spoke to. The level of protection that was installed was top notch. We did not have any dust in areas outside of the work area and Mike and his team were always careful to clean and keep the protection clean which was fantastic. The quality of the work was excellent, I couldn’t find a single issue when work was complete. Mike did a great job communicating with us on decisions we had to make and the schedule for the work throughout the project. We love the result of our bathrooms and had a great experience working with Apex!"

Jennifer B on June 2024

Hi! We are Apex Home Remodeling! We are a full-service contractor specializing in Kitchens, Bathrooms, Additions, Basements, Decks & Fences, Doors & Windows, AND much more! Refresh Your Home & Refresh Your Mind With Apex!

"Great work, highly recommended!! Apex renovated all of the bathrooms in our home down to the studs and completely redid them for us, one of which included moving a wall and layout change to expand. From beginning to end, Mike and his team were a pleasure to work with. We received detailed cost estimates that were accurate and competitive with other contractors we spoke to. The level of protection that was installed was top notch. We did not have any dust in areas outside of the work area and Mike and his team were always careful to clean and keep the protection clean which was fantastic. The quality of the work was excellent, I couldn’t find a single issue when work was complete. Mike did a great job communicating with us on decisions we had to make and the schedule for the work throughout the project. We love the result of our bathrooms and had a great experience working with Apex!"

Jennifer B on June 2024

...
Showing 1-10 of 991
FAQs for addition to existing structure building service projects in Wilmington, DE

Yes, hidden rooms are legal, as long as they meet all local building regulations. If you sell your house, most states require homeowners to disclose full houseplans, which would include any hidden rooms.

If your secret room is a safe room, it should contain a means of communication aside from a cell phone, such as a shortwave radio. You should also have plenty of drinking water, a portable generator, emergency food supplies, blankets, pillows, flashlights, batteries and a first aid kit.

Any time you update your home’s square footage, you increase its value, but a secret room is a niche feature that doesn't rank high on every buyer’s list of must-haves. Investing your money in remodeling more common living areas like bedrooms, bathrooms, or kitchens will have a higher ROI than adding a secret room. Many secret rooms can act as entertainment spaces (think a game room or wine cellar) or quiet spaces (a library or study), so when building your secret room you may want to consider its versatility for when you’re ready to sell.

The Wilmington, DE 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
  • A renovated kitchen with a waterfall island

    HomeAdvisor’s DIY Kitchen Remodel Cost Guide looks at the cost of buying supplies and doing the work yourself. Find the key cost factors and how to cut expenses.

  • Secret room within bookcase

    HomeAdvisor's expert guide walks you through the cost to build a secret room, whether you're creating a safe room for security or a fun space to fulfil your childhood fantasies. Use this guide to help plan your secret room project and explore room, concea

  • outdoor patio bar

    Explore the cost to build a bar in your home and learn how materials, wet vs. dry bars, and labor costs influence the total price of your project.