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Addition to existing structure builders in Dover

Avatar for J&L Trim Siding
J&L Trim Siding
100 Main St #603
4.19(
13
)
Approved Pro
J&L Trim Siding
100 Main St #603
4.19(
13
)
Approved Pro
115 local quotes requested
8 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.

"They did a great job installing my chandelier. They were very friendly to my dogs and had great communication. I would definitely use them again."

Patti G on April 2025

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.

"They did a great job installing my chandelier. They were very friendly to my dogs and had great communication. I would definitely use them again."

Patti G on April 2025


Elite Construction
585 WEST DR UNIT 207
5.00(
8
)
Approved Pro
Elite Construction
585 WEST DR UNIT 207
5.00(
8
)
Approved Pro
Customers say: Quick response
2 years of experience
Free onsite estimate

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.

"Olgun completed several projects for me at two locations. He built a closet, installed guardrails on the basement staircase, painted rooms, installed outside cameras, installed shower doors, replaced siding, and more. He is polite, professional, and timely. He does quality work at a good price. I recommend Olgun for large and small jobs."

William N on April 2025

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.

"Olgun completed several projects for me at two locations. He built a closet, installed guardrails on the basement staircase, painted rooms, installed outside cameras, installed shower doors, replaced siding, and more. He is polite, professional, and timely. He does quality work at a good price. I recommend Olgun for large and small jobs."

William N on April 2025


Avatar for J&C Construction and Design LLC
J&C Construction and Design LLC
1318 E CHURCHVILLE RD
4.50(
2
)
Approved Pro
J&C Construction and Design LLC
1318 E CHURCHVILLE RD
4.50(
2
)
Approved Pro
Customers say: Quick response
1 years of experience
Free onsite estimate

Our trusted experts help guide you through the daunting process of renovating your home. Whether you’ve had damage from a catastrophic event, or simply want to update your space; we have the resources to help you through the process. Our trained professionals will provide you with seamless communication, transparent budgeting, and top-quality craftsmanship. Remodeling, Fire, Water, Storm Damage restoration.

"Timely response very helpful."

Rick W on March 2025

Our trusted experts help guide you through the daunting process of renovating your home. Whether you’ve had damage from a catastrophic event, or simply want to update your space; we have the resources to help you through the process. Our trained professionals will provide you with seamless communication, transparent budgeting, and top-quality craftsmanship. Remodeling, Fire, Water, Storm Damage restoration.

"Timely response very helpful."

Rick W on March 2025


Avatar for M&L Landscaping Construction
M&L Landscaping Construction
118 Adams St
4.87(
82
)
Approved Pro
M&L Landscaping Construction
118 Adams St
4.87(
82
)
Approved Pro
Customers say: Super punctual
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
3916 local quotes requested

Locally owned business with over 12 years of experience. Custom Paver Patios, walkways, retaining walls, and driveways. We also offer full clean up landscaping, hardscaping, and stone work. Passionate about serving our local community and continuing to deliver great customer service. Feel free to call or text with questions regarding your projects. Look forward to working with you on all your home endeavors.

"Excellent! Leo and his team did a fantastic job and finished our project on time and on budget. They enhanced our outdoor courtyard creating a wonderful space for our residents to enjoy!"

Maggie B on May 2025

Locally owned business with over 12 years of experience. Custom Paver Patios, walkways, retaining walls, and driveways. We also offer full clean up landscaping, hardscaping, and stone work. Passionate about serving our local community and continuing to deliver great customer service. Feel free to call or text with questions regarding your projects. Look forward to working with you on all your home endeavors.

"Excellent! Leo and his team did a fantastic job and finished our project on time and on budget. They enhanced our outdoor courtyard creating a wonderful space for our residents to enjoy!"

Maggie B on May 2025


Avatar for Coastline Sunrooms and Awnings
Coastline Sunrooms and Awnings
2 Discovery Lane
5.00(
3
)
Approved Pro
Coastline Sunrooms and Awnings
2 Discovery Lane
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
146 local quotes requested

Creating the perfect outdoor space is easy with Coastline Sunrooms & Awnings. Based in Selbyville, DE, our family-owned and operated business brings over 40 years of experience in designing and installing high-quality sunrooms, awnings, and outdoor structures for both residential and commercial properties. Our team takes pride in delivering exceptional craftsmanship and durable products that enhance your home or business.

"Guys were great!"

michele g on February 2025

Creating the perfect outdoor space is easy with Coastline Sunrooms & Awnings. Based in Selbyville, DE, our family-owned and operated business brings over 40 years of experience in designing and installing high-quality sunrooms, awnings, and outdoor structures for both residential and commercial properties. Our team takes pride in delivering exceptional craftsmanship and durable products that enhance your home or business.

"Guys were great!"

michele g on February 2025


Avatar for Spicer Bros. Construction Inc.
Spicer Bros. Construction Inc.
32221 Beaver Run Dr
4.60(
73
)
Approved Pro
Spicer Bros. Construction Inc.
32221 Beaver Run Dr
4.60(
73
)
Approved Pro
Customers say: Quality work
1137 local quotes requested
23 years of experience

With over 20 years of experience, Spicer Bros. Construction is proud to provide exterior home remodeling services to Delmarva, as well as top-notch bathroom remodeling with our Baths By Spicer Bros. division. Our experienced and friendly staff will help you every step of the way, from the first phone call to the completion of your project. We strive to provide you with the highest level of customer service, fair pricing, and workmanship every single time. Look no further for any of your exterior renovations and bathroom remodeling needs!

"Never heard from them"

Fern B on June 2019

With over 20 years of experience, Spicer Bros. Construction is proud to provide exterior home remodeling services to Delmarva, as well as top-notch bathroom remodeling with our Baths By Spicer Bros. division. Our experienced and friendly staff will help you every step of the way, from the first phone call to the completion of your project. We strive to provide you with the highest level of customer service, fair pricing, and workmanship every single time. Look no further for any of your exterior renovations and bathroom remodeling needs!

"Never heard from them"

Fern B on June 2019


Avatar for Peninsula Bath
Peninsula Bath
36893 Bi State Blvd
5.00(
4
)
Approved Pro
Peninsula Bath
36893 Bi State Blvd
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
643 local quotes requested

Peninsula Bath is locally owned and operated. We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has over 20 years experience in the bathroom business which will give you the best customer service and we only offer the best products in the industry. We make sure our customers are happy before we leave! Call or click to schedule a free estimate today or if you have questions about our in house financing and our low price guarantee!

"It went well. The installer was always punctual, professional and personable. Work was completed in a timely manner and the clean up was exceptional."

Catherine P on November 2022

Peninsula Bath is locally owned and operated. We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has over 20 years experience in the bathroom business which will give you the best customer service and we only offer the best products in the industry. We make sure our customers are happy before we leave! Call or click to schedule a free estimate today or if you have questions about our in house financing and our low price guarantee!

"It went well. The installer was always punctual, professional and personable. Work was completed in a timely manner and the clean up was exceptional."

Catherine P on November 2022


Avatar for All Angles
All Angles
5.00(
2
)
Approved Pro
All Angles
5.00(
2
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
271 local quotes requested

At All Angles Home Remodeling, we specialize in bringing your home improvement dreams to life with precision and expertise. With over 27 years of experience in the industry, we have built a reputation for providing high-quality, reliable, and affordable services to homeowners in the Middletown, DE community. Whether you're looking to remodel your kitchen, transform your bathroom, or finish your basement, our skilled team is committed to delivering exceptional results that exceed your expectations. We take pride in offering a wide range of remodeling services tailored to meet your unique needs. From window and door installations to intricate design work, our passion for home renovation shines through in every project.

"Omar from All Angles provided Master Carpenter skills. Omar went above and beyond our expectations. Omar removed a wall to provide a wide open concept to our home. Cabinets, flooring, tile work,painting, plumbing,electrical,fixtures, even misc. add on's. I would highly recommend anyone who is serious to hire a contractor, get a quote from Omar. His work is outstanding."

David Lardani 5 on January 2025

At All Angles Home Remodeling, we specialize in bringing your home improvement dreams to life with precision and expertise. With over 27 years of experience in the industry, we have built a reputation for providing high-quality, reliable, and affordable services to homeowners in the Middletown, DE community. Whether you're looking to remodel your kitchen, transform your bathroom, or finish your basement, our skilled team is committed to delivering exceptional results that exceed your expectations. We take pride in offering a wide range of remodeling services tailored to meet your unique needs. From window and door installations to intricate design work, our passion for home renovation shines through in every project.

"Omar from All Angles provided Master Carpenter skills. Omar went above and beyond our expectations. Omar removed a wall to provide a wide open concept to our home. Cabinets, flooring, tile work,painting, plumbing,electrical,fixtures, even misc. add on's. I would highly recommend anyone who is serious to hire a contractor, get a quote from Omar. His work is outstanding."

David Lardani 5 on January 2025


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
73 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


First State Bath
Unknown
4.74(
19
)
Approved Pro
First State Bath
Unknown
4.74(
19
)
Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
359 local quotes requested

We are proud to offer the same quality and craftsmanship as many of the larger bathroom remodeling companies at a lower price and without sacrificing customer satisfaction. First State Bath is owned and operated by Mike Tate and Joe Augustine, who together have over twenty-eight years of bathroom remodeling experience, with over 3,000 bathroom renovations sold and completed

"I hired First State Bath for converting a bath tub to a walk-in shower. I feel so thankful to them from introduction through job completing. They listened carfully to my requests and proposed a small suggestion, but it turned out very special to my need. It was choice of 54" long instead of 60". It adds space for easy moving in the bathroom. It might have no impact to most people, but is very helpful and special in my situation. The project is worked out very well with on time, clean and high quality. They did great job at very reasonable cost."

Meng J on February 2025

We are proud to offer the same quality and craftsmanship as many of the larger bathroom remodeling companies at a lower price and without sacrificing customer satisfaction. First State Bath is owned and operated by Mike Tate and Joe Augustine, who together have over twenty-eight years of bathroom remodeling experience, with over 3,000 bathroom renovations sold and completed

"I hired First State Bath for converting a bath tub to a walk-in shower. I feel so thankful to them from introduction through job completing. They listened carfully to my requests and proposed a small suggestion, but it turned out very special to my need. It was choice of 54" long instead of 60". It adds space for easy moving in the bathroom. It might have no impact to most people, but is very helpful and special in my situation. The project is worked out very well with on time, clean and high quality. They did great job at very reasonable cost."

Meng J on February 2025

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FAQs for addition to existing structure building service projects in Dover, DE

Building an in-law suite takes between two and seven months. Converting an existing basement, attic, or room can be done in about two months. Constructing a new addition or detached suite often takes four to five months for construction, plus one to two months for permits. The bigger the suite, the longer it will take. 

Yes, you can build an in-law suite in your backyard if you meet local building codes and zoning regulations. An in-law suite often occupies 300 to 800 square feet. Be sure to follow size restrictions, utility separations, and entrance requirements. Hiring a qualified contractor ensures you meet all regulatory requirements because they can pull permits, double-check local code, and gather other skilled pros to work on your suite. 

An in-law suite is a self-contained living space attached to—or detached from—your main home. Expect a bedroom, full bath, and a kitchenette or compact living area. The setup gives relatives privacy, doubles as a potential rental, and can lift your property value. To qualify as a legal dwelling, the suite must meet local building codes and zoning rules.

The Dover, 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.
BRIGHT OPEN ATTIC SPACE
Jun 10, 2025
Jun 10, 2025
An in-law suite is a great solution for people who have family visiting often. Explore how much an in-law suite costs and prep to build yours.
white and gray kitchen with butchers block countertop
Apr 8, 2025
Apr 8, 2025
Looking to enhance the warmth and utility of your kitchen? Explore how much a butcher block countertop costs and start your budget here.
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.
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