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 Dover

Avatar for Built To Last Home Improvements, LLC
Built To Last Home Improvements, LLC
600 Valentine St
4.77(
24
)
Approved Pro
Built To Last Home Improvements, LLC
600 Valentine St
4.77(
24
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
7 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!

"I gave this man $3000 which was 33% of the job upfront. Was supposed to give him 33% at the halfway part And 34% upon completion. But when I went to my bathroom and realized you left drugs in my bathroom and I have small children. Not like that 3000 black and small cleaners caught easy and heâ s lucky he hasnâ t been charged with nothing. Only reason that happened is because I wouldnâ t pursue charges. He obviously is a drug addict and has a problem so maybe he should get help Possibly isnâ t the option maybe rehab is. If you paid for supplies, you got ripped off wait 10 years and it will all fall apart charges for certain stuff but buys different stuff so he can use the extra money to pick himself up drugs without nobody noticing, I am so terribly in grief over this. $3000 he ran off with how is Matt doing in business and not in a jail cell"

Daniel B on July 2024

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!

"I gave this man $3000 which was 33% of the job upfront. Was supposed to give him 33% at the halfway part And 34% upon completion. But when I went to my bathroom and realized you left drugs in my bathroom and I have small children. Not like that 3000 black and small cleaners caught easy and heâ s lucky he hasnâ t been charged with nothing. Only reason that happened is because I wouldnâ t pursue charges. He obviously is a drug addict and has a problem so maybe he should get help Possibly isnâ t the option maybe rehab is. If you paid for supplies, you got ripped off wait 10 years and it will all fall apart charges for certain stuff but buys different stuff so he can use the extra money to pick himself up drugs without nobody noticing, I am so terribly in grief over this. $3000 he ran off with how is Matt doing in business and not in a jail cell"

Daniel B on July 2024


Avatar for WA Construct
WA Construct
200 Sheffield St STE 308
5.00(
21
)
Approved Pro
WA Construct
200 Sheffield St STE 308
5.00(
21
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
11 local quotes requested

WA Construct is a Design-and-build Construction company, provides value-added construction services to our customers by creating a successful partnership with them throughout the whole construction process. Our pledge is to establish lasting relationships with our customers by exceeding their expectations and gaining their trust through exceptional performance by every member of the construction team. WA values integrity, our practices are honest, and our conduct is legal and ethical. We try to maintain the highest level of professionalism, loyalty, and fairness in our relationships with our suppliers, sub-contractors, professional associates and customers. We always strive for win-win partnerships with customers who share our desire to design and build structures that add value to the communities in which they are built. Our employees are our most important resource in achieving our mission as we hope and believe that this path will lead to excellence.

"After meeting with multiple contractors to renovate our historic house, we chose WA construct.Their team of professionals took complete care of the entire project from start to the end and we were very happy with the high quality of their work. We highly recommend them for your next home construction project."

Lidia C on October 2022

WA Construct is a Design-and-build Construction company, provides value-added construction services to our customers by creating a successful partnership with them throughout the whole construction process. Our pledge is to establish lasting relationships with our customers by exceeding their expectations and gaining their trust through exceptional performance by every member of the construction team. WA values integrity, our practices are honest, and our conduct is legal and ethical. We try to maintain the highest level of professionalism, loyalty, and fairness in our relationships with our suppliers, sub-contractors, professional associates and customers. We always strive for win-win partnerships with customers who share our desire to design and build structures that add value to the communities in which they are built. Our employees are our most important resource in achieving our mission as we hope and believe that this path will lead to excellence.

"After meeting with multiple contractors to renovate our historic house, we chose WA construct.Their team of professionals took complete care of the entire project from start to the end and we were very happy with the high quality of their work. We highly recommend them for your next home construction project."

Lidia C on October 2022


Frank Klimaszewski Carpentry
40 Meyersville Road
4.58(
13
)
Approved Pro
Frank Klimaszewski Carpentry
40 Meyersville Road
4.58(
13
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
45 years of experience

Frank Klimaszewski Carpentry is committed to excellence in every aspect of our business. Call us directly (973) 377-3484. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Accurate knowledge of our trade combined with ability is what makes us true professionals. Locally owned and operated for over 30 years, we get the job done right the first time. Call us directly (973) 377-3484 and we will work around your schedule with a professional estimate.

"Frank and his team did excellent work of tearing down an old cedar deck and building a Trex deck. Did a great job of guiding me thru the process of choosing the color schematic of the deck, and options for railing. Due to Covid-19 not all material was available at the same time, Frank was always in contact to let me know the status of material being available so the job could move forward. Easy going and always available to answer any questions you may have about your project. Makes sure you are 100% satisfied. Highly recommend!"

Stephen D on November 2020

Frank Klimaszewski Carpentry is committed to excellence in every aspect of our business. Call us directly (973) 377-3484. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Accurate knowledge of our trade combined with ability is what makes us true professionals. Locally owned and operated for over 30 years, we get the job done right the first time. Call us directly (973) 377-3484 and we will work around your schedule with a professional estimate.

"Frank and his team did excellent work of tearing down an old cedar deck and building a Trex deck. Did a great job of guiding me thru the process of choosing the color schematic of the deck, and options for railing. Due to Covid-19 not all material was available at the same time, Frank was always in contact to let me know the status of material being available so the job could move forward. Easy going and always available to answer any questions you may have about your project. Makes sure you are 100% satisfied. Highly recommend!"

Stephen D on November 2020


Avatar for Sovereign Homes, LLC
Sovereign Homes, LLC
PO Box 175
4.65(
13
)
Approved Pro
Sovereign Homes, LLC
PO Box 175
4.65(
13
)
Approved Pro
Super Service Award
Customers say: True professional
10 local quotes requested
16 years of experience

Sovereign Homes, LLC, specializes in residential building. With over 30 years experience in architecture, general contracting and project management, we design and build new construction, additions as well as renovations; managing residential projects from cost estimating, zoning feasibility, to full architectural design and construction completion. Whether it's adding a second level, creating a new family room or building a new home entirely, Sovereign Homes stands ready to serve your needs and assist you in making your vision a reality.

"Sovereign Homes brought our vision to life! We added a primary suite to our home, replacing an existing crawl space attic. Rey helped us step-by-step throughout the project. We appreciated his clear communication and efforts with the town and the contractors. We love the luxurious addition to our home!"

Karl S on March 2025

Sovereign Homes, LLC, specializes in residential building. With over 30 years experience in architecture, general contracting and project management, we design and build new construction, additions as well as renovations; managing residential projects from cost estimating, zoning feasibility, to full architectural design and construction completion. Whether it's adding a second level, creating a new family room or building a new home entirely, Sovereign Homes stands ready to serve your needs and assist you in making your vision a reality.

"Sovereign Homes brought our vision to life! We added a primary suite to our home, replacing an existing crawl space attic. Rey helped us step-by-step throughout the project. We appreciated his clear communication and efforts with the town and the contractors. We love the luxurious addition to our home!"

Karl S on March 2025


Avatar for Mazepa Group
Mazepa Group
49 Francisco Ave
5.00(
8
)
Approved Pro
Mazepa Group
49 Francisco Ave
5.00(
8
)
Approved Pro
Customers say: Quick response
8 years of experience
Free onsite estimate

With over 5 years experience serving the Caldwell and surrounding areas, Mazepa Group is your solution for all your construction needs. We pride ourselves on our extreme professionalism and superior customer care on every job, satisfaction guaranteed!

"Devin and his crew were extremely efficient and professional. The work was done on-time and within budget. I highly recommend Mazepa Group."

Dawn _ on March 2025

With over 5 years experience serving the Caldwell and surrounding areas, Mazepa Group is your solution for all your construction needs. We pride ourselves on our extreme professionalism and superior customer care on every job, satisfaction guaranteed!

"Devin and his crew were extremely efficient and professional. The work was done on-time and within budget. I highly recommend Mazepa Group."

Dawn _ on March 2025


Avatar for On The Spot Home Improvements, Inc
On The Spot Home Improvements, Inc
24 Market St
4.25(
6
)
Approved Pro
On The Spot Home Improvements, Inc
24 Market St
4.25(
6
)
Approved Pro
Customers say: Quality work
26 years of experience

Founded in 1987, On The Spot Home Improvements became one of New Jersey’s leading home improvement companies, building a reputation of excellence and customer satisfaction. Based in Saddle Brook since 2006, we pride ourselves on meeting the needs of every client we serve. Our mission is to provide comprehensive home improvement solutions from small repairs to full-scale renovations and additions. Our team ensures every project receives meticulous attention to detail, quality craftsmanship, and timely completion. And our suite of kitchen and bathroom remodeling, roofing, siding, and masonry services cater to our customers’ home improvement challenges.

"From start to finish the experience was exceptional. The team was professional and knowledgeable. The awning fabric itself is amazing. I have received numerous compliments from my neighbors. I highly recommend On The Spot for anyone looking to enhance their home."

Richard F on October 2024

Founded in 1987, On The Spot Home Improvements became one of New Jersey’s leading home improvement companies, building a reputation of excellence and customer satisfaction. Based in Saddle Brook since 2006, we pride ourselves on meeting the needs of every client we serve. Our mission is to provide comprehensive home improvement solutions from small repairs to full-scale renovations and additions. Our team ensures every project receives meticulous attention to detail, quality craftsmanship, and timely completion. And our suite of kitchen and bathroom remodeling, roofing, siding, and masonry services cater to our customers’ home improvement challenges.

"From start to finish the experience was exceptional. The team was professional and knowledgeable. The awning fabric itself is amazing. I have received numerous compliments from my neighbors. I highly recommend On The Spot for anyone looking to enhance their home."

Richard F on October 2024


Avatar for Destination Home Fine Home Building
Destination Home Fine Home Building
198 RTE 206
5.00(
9
)
Approved Pro
Destination Home Fine Home Building
198 RTE 206
5.00(
9
)
Approved Pro
Customers say: Quick response
7 years of experience
Free onsite estimate

At Destination Home we have spent 35 years mastering design build service. We feature high-end finishes at affordable prices. Whether your project is a a total remodel, new addition, or beautiful kitchen we deliver reliability, great communication, integrity, and quality work. We look forward to earning your business!

"We hired Chris to work on a home addition project. After meeting with several contractors we decided to go with Chris and are so happy we did! Chris and his team are experienced workers who take great pride in what they do! Chris works alongside his team ensuring everything meets the architectural plans and his high quality standards. His team was respectful and left the workspace clean at the end of each day. Chris kept us informed of next steps throughout the project and was responsive to our questions. He was flexible and worked with us on minor changes to make sure we were happy with the end result. The project completed in a timely manner and on budget. We are so pleased with our new space and the quality of their work! We highly recommend Chris and would definitely hire him again in the future!"

Jennifer P on June 2024

At Destination Home we have spent 35 years mastering design build service. We feature high-end finishes at affordable prices. Whether your project is a a total remodel, new addition, or beautiful kitchen we deliver reliability, great communication, integrity, and quality work. We look forward to earning your business!

"We hired Chris to work on a home addition project. After meeting with several contractors we decided to go with Chris and are so happy we did! Chris and his team are experienced workers who take great pride in what they do! Chris works alongside his team ensuring everything meets the architectural plans and his high quality standards. His team was respectful and left the workspace clean at the end of each day. Chris kept us informed of next steps throughout the project and was responsive to our questions. He was flexible and worked with us on minor changes to make sure we were happy with the end result. The project completed in a timely manner and on budget. We are so pleased with our new space and the quality of their work! We highly recommend Chris and would definitely hire him again in the future!"

Jennifer P on June 2024


Avatar for Galaxy Construction
Galaxy Construction
12 Maxwell Lane
5.00(
11
)
Approved Pro
Galaxy Construction
12 Maxwell Lane
5.00(
11
)
Approved Pro
Super Service Award
Customers say: Quick response
39 local quotes requested
26 years of experience

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We specialize in home improvement 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!

"Ed and his team did a wonderful job installing a new trex deck. They did a great job overall and also built two flower planters per my request that I'm absolutely delighted about. Debbie is amazing and I loved interacting with both of them. They took care to make sure I was happy with the choice, helped pick the color and metal railings that give a wider seemless view. When I saw the stone work didn't work on one side as steps and requested to also make it trex they quickly adapted and made the necessary changes. I'm thrilled and would highly recommend Ed and Galaxy Construction. It is great to work with a team that takes joy in what they do and make the process seemless."

Dak V on June 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 specialize in home improvement 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!

"Ed and his team did a wonderful job installing a new trex deck. They did a great job overall and also built two flower planters per my request that I'm absolutely delighted about. Debbie is amazing and I loved interacting with both of them. They took care to make sure I was happy with the choice, helped pick the color and metal railings that give a wider seemless view. When I saw the stone work didn't work on one side as steps and requested to also make it trex they quickly adapted and made the necessary changes. I'm thrilled and would highly recommend Ed and Galaxy Construction. It is great to work with a team that takes joy in what they do and make the process seemless."

Dak V on June 2025


Avatar for JOHANNEMANN AND SONS GENERAL CONTRACTING LLC
JOHANNEMANN AND SONS GENERAL CONTRACTING LLC
1 Vreeland Terrace Unit 108
5.00(
15
)
Approved Pro
JOHANNEMANN AND SONS GENERAL CONTRACTING LLC
1 Vreeland Terrace Unit 108
5.00(
15
)
Approved Pro
12 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 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!

"Pleasure working with Rob and his team at Johannemann & Sons General Contracting. They are very professional and are thorough with their work. Highly recommend!!"

Brennen R on May 2025

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 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!

"Pleasure working with Rob and his team at Johannemann & Sons General Contracting. They are very professional and are thorough with their work. Highly recommend!!"

Brennen R on May 2025


Avatar for Allure Properties and Maintenance
Allure Properties and Maintenance
316 Mount Arlington Boulevard
4.57(
9
)
Approved Pro
Allure Properties and Maintenance
316 Mount Arlington Boulevard
4.57(
9
)
Approved Pro
Customers say: Quick response
18 local quotes requested
25 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.

"Don't hesitate to hire John Waddell from Allure Properties. From start to finish, the job he did for me was 100 percent professional and top notch He was a pleasure to work with, always returned phone calls and addressed my every concern, and was positive and professional. Id hire him again without hesitation"

PATRICIA G on December 2023

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.

"Don't hesitate to hire John Waddell from Allure Properties. From start to finish, the job he did for me was 100 percent professional and top notch He was a pleasure to work with, always returned phone calls and addressed my every concern, and was positive and professional. Id hire him again without hesitation"

PATRICIA G on December 2023

...
Showing 1-10 of 942

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

Converting an existing space into a laundry room is more affordable than building a new addition. While new additions start at $5,000, renovating an existing space for laundry use can begin at $1,300. 

Your specific costs will depend on whether plumbing and electrical connections exist nearby, the quality of finishes you select, and whether any structural modifications are needed. Always budget extra for unexpected issues, particularly in older homes where hidden problems might surface during renovation.

The smallest practical size for a new laundry room addition is 35 square feet, which provides enough space for basic appliances and minimal storage. For renovations utilizing existing space, smaller footprints might work with space-saving solutions like stacked appliances. 

A standard-sized laundry room of 60 square feet offers more comfort and functionality, allowing for counter space and storage cabinets. The optimal size depends on your household needs and available space.

Yes, adding a laundry room requires several permits, particularly for new additions. You'll need building permits, plus specific permits for electrical work, plumbing installations, and possibly HVAC modifications. 

Requirements vary significantly by municipality, so consulting with your local building department before starting work is essential. Proceeding without proper permits can result in fines, mandatory removal of completed work, and complications when selling your property.

The timeline for completing a laundry room addition varies based on project complexity, contractor availability, and permit processing times. Factors that can extend the schedule include material delivery delays, weather conditions, and unforeseen structural issues discovered during construction. 

Renovating an existing space often requires less time than building a completely new addition. Working with an experienced contractor who can coordinate various tradespeople efficiently helps keep your project on schedule.

The Dover, NJ 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.
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.
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.
Share project details to get started.