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Find Addition to existing structure builders in New Haven

Hill Top Remodeling, LLC

16 Unity Drive
4.68(
17
)
Approved Pro

Hill Top Remodeling, LLC

16 Unity Drive
4.68(
17
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
12 years of experience

With over 30 years of experience in the Remodeling industry, Hill Top Remodeling, LLC is your industry expert. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a family owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today we look forward to working with you!

"If you want sloppy incomplete and incorrect work hire Hilltop. Bill did not use the products contracted for- used less expensive options without telling us - and hardly ever showed up. The job went way beyond promised finish date. Paid the full balance, Bill then left the work unfinished and ghosted us!"

T P on July 2025

With over 30 years of experience in the Remodeling industry, Hill Top Remodeling, LLC is your industry expert. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a family owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today we look forward to working with you!

"If you want sloppy incomplete and incorrect work hire Hilltop. Bill did not use the products contracted for- used less expensive options without telling us - and hardly ever showed up. The job went way beyond promised finish date. Paid the full balance, Bill then left the work unfinished and ghosted us!"

T P on July 2025


CSM Development Group, LLC

13 Sunset Ridge Road
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

CSM Development Group, LLC

13 Sunset Ridge Road
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
15 local quotes requested
11 years of experience

CSM Development Group, LLC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

CSM Development Group, LLC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!


Avatar for JR General Contractor, LLC

JR General Contractor, LLC

22 Olive Street
4.83(
15
)
Approved Pro

JR General Contractor, LLC

22 Olive Street
4.83(
15
)
Approved Pro
Customers say: Quick response
15 years of experience
Free onsite estimate

JR General Contractor LLC, is committed to excellence 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.

"Yes they did an excellent job"

Louise R on May 2025

JR General Contractor LLC, is committed to excellence 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.

"Yes they did an excellent job"

Louise R on May 2025


Avatar for Devore & Company, LLC

Devore & Company, LLC

20 Hillandale Terrace
5.00(
1
)
Approved Pro

Devore & Company, LLC

20 Hillandale Terrace
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 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 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!

"N/A"

Moira W on May 2021

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!

"N/A"

Moira W on May 2021


Avatar for J A L Construction

J A L Construction

334 Exeter St
5.00(
4
)
Approved Pro

J A L Construction

334 Exeter St
5.00(
4
)
Approved Pro
50 years of experience
Free onsite estimate

J A L Construction has over 50 years of experience delivering high-quality construction and remodeling services. Our experience speaks for itself—we take pride in reliability, clear communication, and craftsmanship that stands the test of time. Whether you’re planning a full home addition, remodeling your kitchen or bathroom, or updating your exterior, we bring skill and dedication to every job. Our services include additions, major renovations, kitchen and bath remodels, deck and porch builds, siding installation, structural steel beam work, window replacement, and brick, stone, or paver patios and walkways. We work closely with homeowners to understand their vision and deliver results that exceed expectations. At J A L Construction, no job is too big or small. We look forward to earning your trust and helping bring your next project to life.

"The job was done in a timely manor without any issues. This was important because it is my rental unit,"

Sharon Z on August 2025

J A L Construction has over 50 years of experience delivering high-quality construction and remodeling services. Our experience speaks for itself—we take pride in reliability, clear communication, and craftsmanship that stands the test of time. Whether you’re planning a full home addition, remodeling your kitchen or bathroom, or updating your exterior, we bring skill and dedication to every job. Our services include additions, major renovations, kitchen and bath remodels, deck and porch builds, siding installation, structural steel beam work, window replacement, and brick, stone, or paver patios and walkways. We work closely with homeowners to understand their vision and deliver results that exceed expectations. At J A L Construction, no job is too big or small. We look forward to earning your trust and helping bring your next project to life.

"The job was done in a timely manor without any issues. This was important because it is my rental unit,"

Sharon Z on August 2025


Avatar for Everything Under The Roof LLC

Everything Under The Roof LLC

PO Box 844
4.95(
37
)
Approved Pro

Everything Under The Roof LLC

PO Box 844
4.95(
37
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
13 local quotes requested

We pride ourselves on being a unique construction company. Everything Under the Roof is an interior, residential construction company owned by Kim and Jay Spanier. At work we are a husband and wife team, but at home we are mom and dad, so we truly understand the importance of keeping your project orderly and on time, while keeping your family (including your pets) safe. We can also guarantee NO high pressure sales calls, and no crabby, condescending construction guys working on your home improvement project – just our family helping yours! Kim is your main point of contact through the project. She walks you through the construction process, acts as your personal construction jargon translator, and, most importantly, she is the budget master. Kim will help you shop for materials so that you stay on budget. Jay is the jobsite superintendent. He manages the day to day activities of your remodeling/construction project, he coordinates and manages the sub-contractors, and it’s his skillful carpentry that will transform your home. All of our projects work within the existing footprint of your house. What exactly does that mean? Well, in a nut shell, we don’t do additions, and we won’t raise your roof. We find all the hidden, un-used spaces in your house and re-create your floor plan to work for you and your family.

"My wife and I needed to finish our basement to accommodate our growing kids. We had an excellent experience with Everything Under The Roof. They really listened to what we wanted to build and everything was done well, on-time, and on-budget. One thing I particularly appreciated is that the owner was onsite doing the work, and not simply sending a team of workers. We'll definitely be using Everything Under The Roof for any future projects. "

Thomas H on September 2025

We pride ourselves on being a unique construction company. Everything Under the Roof is an interior, residential construction company owned by Kim and Jay Spanier. At work we are a husband and wife team, but at home we are mom and dad, so we truly understand the importance of keeping your project orderly and on time, while keeping your family (including your pets) safe. We can also guarantee NO high pressure sales calls, and no crabby, condescending construction guys working on your home improvement project – just our family helping yours! Kim is your main point of contact through the project. She walks you through the construction process, acts as your personal construction jargon translator, and, most importantly, she is the budget master. Kim will help you shop for materials so that you stay on budget. Jay is the jobsite superintendent. He manages the day to day activities of your remodeling/construction project, he coordinates and manages the sub-contractors, and it’s his skillful carpentry that will transform your home. All of our projects work within the existing footprint of your house. What exactly does that mean? Well, in a nut shell, we don’t do additions, and we won’t raise your roof. We find all the hidden, un-used spaces in your house and re-create your floor plan to work for you and your family.

"My wife and I needed to finish our basement to accommodate our growing kids. We had an excellent experience with Everything Under The Roof. They really listened to what we wanted to build and everything was done well, on-time, and on-budget. One thing I particularly appreciated is that the owner was onsite doing the work, and not simply sending a team of workers. We'll definitely be using Everything Under The Roof for any future projects. "

Thomas H on September 2025


RNB Home Improvement, LLC

87 Farm Hill Rd
5.00(
1
)
Approved Pro

RNB Home Improvement, LLC

87 Farm Hill Rd
5.00(
1
)
Approved Pro
10 years of experience
Free onsite estimate

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 10 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. 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!

"We had RNB Home Improvement remodel our kitchen and first floor bathroom. Mike Brickly was an absolute pleasure to deal with over the length of the project. He provided helpful suggestions and advice throughout the process. He promptly arrived for appointments and responded in a timely manner to calls. He went above and beyond at times to complete the project within the estimated timeframe. We are extremely happy with the result. His subcontractors were all professional and did great work. Mike extends great effort to assure customer satisfaction. Mike has completed other smaller projects for us, and we would wholeheartedly recommend him."

Robert M on September 2025

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 10 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. 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!

"We had RNB Home Improvement remodel our kitchen and first floor bathroom. Mike Brickly was an absolute pleasure to deal with over the length of the project. He provided helpful suggestions and advice throughout the process. He promptly arrived for appointments and responded in a timely manner to calls. He went above and beyond at times to complete the project within the estimated timeframe. We are extremely happy with the result. His subcontractors were all professional and did great work. Mike extends great effort to assure customer satisfaction. Mike has completed other smaller projects for us, and we would wholeheartedly recommend him."

Robert M on September 2025


J & P Restoration

PO Box 120673
4.62(
59
)
Approved Pro

J & P Restoration

PO Box 120673
4.62(
59
)
Approved Pro
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
17 local quotes requested

With over 33 years experience in residential home improvement projects, J & P Restoration has the knowledge and experience to make your Addition, remodel or other project a reality.

"The owner, John Petrillo, is an old-school pro. This was an insurance claim job, but we hope to hire him again this year for another large (non-insurance claim) project."

Theresa M on May 2023

With over 33 years experience in residential home improvement projects, J & P Restoration has the knowledge and experience to make your Addition, remodel or other project a reality.

"The owner, John Petrillo, is an old-school pro. This was an insurance claim job, but we hope to hire him again this year for another large (non-insurance claim) project."

Theresa M on May 2023


Avatar for USL Outdoor Living LLC

USL Outdoor Living LLC

PO Box 627
5.00(
1
)
Approved Pro

USL Outdoor Living LLC

PO Box 627
5.00(
1
)
Approved Pro
21 local quotes requested
1 years of experience

With 30+ years experience, we offer only the best quality workmanship and professional courtesy. We specialize all phases of commercial and residential remodeling and outdoor living. We are committed quality work and outstanding results & are strongly involved in local community activities. We look forward to working with you!

With 30+ years experience, we offer only the best quality workmanship and professional courtesy. We specialize all phases of commercial and residential remodeling and outdoor living. We are committed quality work and outstanding results & are strongly involved in local community activities. We look forward to working with you!


Avatar for Solimine Contracting, LLC

Solimine Contracting, LLC

21 Robin Hood Road
4.34(
35
)
Approved Pro

Solimine Contracting, LLC

21 Robin Hood Road
4.34(
35
)
Approved Pro
Customers say: Quality work
48 local quotes requested
20 years of experience

Solimine Contracting is a family owned construction firm that has been servicing CT & NY since 1995. We provide a high quality of craftsmanship & customer service that will exceed your expectations. Our focus is to provide every client with an honest approach to what is attainable in their project within their budget. Our goal is to build long lasting relationships and lifetime customers 1 home at a time!! View our website at www.soliminecontracting.com or like us on facebook to view our current projects! We look forward to making your home improvement dreams a reality. Solimine Contracting will ensure that all your dreams, whether big or small, are built with precision, professionalism and excellence. Our years of experience and dedication to detail allows us to complete every project on time and on budget. Solimine Contracting; where quality, Integrity, Punctuality and Afordability ALWAYS MATTER!!!

"John and Johnna of Solimine were fantastic to work with. They are both very knowledgeable and made suggestions which improved the project. Their teams did great and high quality work. Any changes from the scope (either up or down) were discussed to determine the impact to cost and schedule and were agreed upon prior to any work being performed. They worked non stop and completed the project ahead of schedule and within the cost we discussed. We were extremely satisfied with the performance of the Solimine organization."

Michael O on June 2025

Solimine Contracting is a family owned construction firm that has been servicing CT & NY since 1995. We provide a high quality of craftsmanship & customer service that will exceed your expectations. Our focus is to provide every client with an honest approach to what is attainable in their project within their budget. Our goal is to build long lasting relationships and lifetime customers 1 home at a time!! View our website at www.soliminecontracting.com or like us on facebook to view our current projects! We look forward to making your home improvement dreams a reality. Solimine Contracting will ensure that all your dreams, whether big or small, are built with precision, professionalism and excellence. Our years of experience and dedication to detail allows us to complete every project on time and on budget. Solimine Contracting; where quality, Integrity, Punctuality and Afordability ALWAYS MATTER!!!

"John and Johnna of Solimine were fantastic to work with. They are both very knowledgeable and made suggestions which improved the project. Their teams did great and high quality work. Any changes from the scope (either up or down) were discussed to determine the impact to cost and schedule and were agreed upon prior to any work being performed. They worked non stop and completed the project ahead of schedule and within the cost we discussed. We were extremely satisfied with the performance of the Solimine organization."

Michael O on June 2025

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FAQs for addition to existing structure building service projects in New Haven, CT

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 New Haven, CT 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.

  • 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.