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Find Addition to existing structure builders in Nassau

Regeneration Contracting, LTD

4.67(
18
)
Approved Pro

Regeneration Contracting, LTD

4.67(
18
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

Thank you for choosing Regeneration Contracting. We are a locally owned and operated, full service construction company. Whether you are looking for someone to take care of your home maintenance needs or you are finally ready for that updated kitchen, bathroom or deck, we bring over thirty years construction knowledge and expertise to each and every project large or small.

"Derek Seiger was an absolute joy to work with! Not only was he reliable (showing up as promised), but the quality of his work is exceptional. He was pleasant and efficient and I would recommend him to anyone interested in good work done in a timely and professional manner."

Barbara M on October 2023

Thank you for choosing Regeneration Contracting. We are a locally owned and operated, full service construction company. Whether you are looking for someone to take care of your home maintenance needs or you are finally ready for that updated kitchen, bathroom or deck, we bring over thirty years construction knowledge and expertise to each and every project large or small.

"Derek Seiger was an absolute joy to work with! Not only was he reliable (showing up as promised), but the quality of his work is exceptional. He was pleasant and efficient and I would recommend him to anyone interested in good work done in a timely and professional manner."

Barbara M on October 2023


Avatar for Zono Construction Services

Zono Construction Services

5.00(
12
)
Approved Pro

Zono Construction Services

5.00(
12
)
Approved Pro
Super Service Award
Customers say: Quick response
4 years of experience
Free onsite estimate

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 Basement 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!

"Brian and the Zono team completed a new ground-level deck and upper deck railing remodel & stairs for us. I found Brian to be a great partner during the design process, and I felt like we ended up with something that felt custom to our space and needs. The crew was friendly and showed care around our home. Best of all, we get to enjoy the deck as a family!"

Melia D on April 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 Basement 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!

"Brian and the Zono team completed a new ground-level deck and upper deck railing remodel & stairs for us. I found Brian to be a great partner during the design process, and I felt like we ended up with something that felt custom to our space and needs. The crew was friendly and showed care around our home. Best of all, we get to enjoy the deck as a family!"

Melia D on April 2025


Avatar for TH Building Co

TH Building Co

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

TH Building Co

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
2025 years of experience
Free onsite estimate

I’ve been working in trades since I was a kid and have done a little bit of everything to include management and leadership along the way. My focus remains on quality, craftsmanship and the customer is treated fairly and respectfully.

I’ve been working in trades since I was a kid and have done a little bit of everything to include management and leadership along the way. My focus remains on quality, craftsmanship and the customer is treated fairly and respectfully.


"Team did incredible work on my home I?m so grateful for this team. Not only did I have them remodel my kitchen but because they did such a good job I added a bathroom remodel also had them remodel my patio to a cozy little outdoor relaxation area. 100% would recommend this team for anything you can throw at them!!!!"

Tyler Z on December 2025

Welcome to Top Hat Services, we look forward to discussing your home improvement project, please reach out to us anytime!

"Team did incredible work on my home I?m so grateful for this team. Not only did I have them remodel my kitchen but because they did such a good job I added a bathroom remodel also had them remodel my patio to a cozy little outdoor relaxation area. 100% would recommend this team for anything you can throw at them!!!!"

Tyler Z on December 2025


Avatar for The Climate Chief, LLC

The Climate Chief, LLC

4.97(
16
)
Approved Pro

The Climate Chief, LLC

4.97(
16
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
39 years of experience

When you choose The Climate Chief, you have access to a number of homeowner services that can help you stay comfortable and save you money. We promise to provide you with the exceptional products and services you deserve, because we care about the comfort and safety of our customers. To find out how we can help you improve your home and its comfort level, as well as how we can help you save money on your energy bills, contact The Climate Chief today at (518) 459-4443. Proudly serving Upstate New York homeowners Since 1986!

"I’m a very satisfied customer."

Jack R on October 2023

When you choose The Climate Chief, you have access to a number of homeowner services that can help you stay comfortable and save you money. We promise to provide you with the exceptional products and services you deserve, because we care about the comfort and safety of our customers. To find out how we can help you improve your home and its comfort level, as well as how we can help you save money on your energy bills, contact The Climate Chief today at (518) 459-4443. Proudly serving Upstate New York homeowners Since 1986!

"I’m a very satisfied customer."

Jack R on October 2023


Avatar for M Johnson Contracting

M Johnson Contracting

4.98(
41
)
Approved Pro

M Johnson Contracting

4.98(
41
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 local quotes requested

M Johnson Contracting is a locally owned company specializing in remodels, additions, and custom builds to make your dream home a reality. Whatever the project, M Johnson Contracting has the skills, equipment, and experience to bring your dreams to life. Our passion is revitalizing tired spaces, restoring original beauty, and helping you fall in love with your home again.

"What started as a deck rebuild turned into a three season room addition. Matt and his crew were easy to work with, offered some great suggestions to us, and the finished room is more than we hoped for! We loved his suggestion of putting pine on the vaulted ceiling, and the finish work at the bottom on the outside looks great. Matt took care to match our 20 year old siding, and finish the windows and doors to exactly match the others on the house."

Sarah C on February 2023

M Johnson Contracting is a locally owned company specializing in remodels, additions, and custom builds to make your dream home a reality. Whatever the project, M Johnson Contracting has the skills, equipment, and experience to bring your dreams to life. Our passion is revitalizing tired spaces, restoring original beauty, and helping you fall in love with your home again.

"What started as a deck rebuild turned into a three season room addition. Matt and his crew were easy to work with, offered some great suggestions to us, and the finished room is more than we hoped for! We loved his suggestion of putting pine on the vaulted ceiling, and the finish work at the bottom on the outside looks great. Matt took care to match our 20 year old siding, and finish the windows and doors to exactly match the others on the house."

Sarah C on February 2023


MFX Development llc

5.00(
4
)
Approved Pro

MFX Development llc

5.00(
4
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
59 local quotes requested

We cover all aspects of residential and commercial remodeling as well as new construction projects. Fully insured with free on site and mobile estimates.

"It is a great company and provide a good service. I will use them again."

MILTON L on March 2022

We cover all aspects of residential and commercial remodeling as well as new construction projects. Fully insured with free on site and mobile estimates.

"It is a great company and provide a good service. I will use them again."

MILTON L on March 2022


Avatar for MRM Construction Services LLC

MRM Construction Services LLC

5.00(
4
)
Approved Pro

MRM Construction Services LLC

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
21 local quotes requested

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. I have been working on residential improvements professionally and personally for over 25 years. I specialize in detailed carpentry work to enhance the comfort of any home. From closets, entryway or kitchen built-ins to full framing renovations & additions. I take pride in the projects we complete. We look forward to earning your business! Book with us online or feel free to give us a call today! We are also a Barden Homes dealer for new custom homes as well. https://www.bardenbp.com I invite you to look at some of my recent projects completed.

"Really responsible and diligent crew. Did excellent work. Definitely the best quote. Enjoyed working with them."

James N on April 2025

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. I have been working on residential improvements professionally and personally for over 25 years. I specialize in detailed carpentry work to enhance the comfort of any home. From closets, entryway or kitchen built-ins to full framing renovations & additions. I take pride in the projects we complete. We look forward to earning your business! Book with us online or feel free to give us a call today! We are also a Barden Homes dealer for new custom homes as well. https://www.bardenbp.com I invite you to look at some of my recent projects completed.

"Really responsible and diligent crew. Did excellent work. Definitely the best quote. Enjoyed working with them."

James N on April 2025


Avatar for A&K CONSTRUCTION

A&K CONSTRUCTION

4.94(
18
)
Approved Pro

A&K CONSTRUCTION

4.94(
18
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
202 local quotes requested

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 quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!

"They did an excellent job. They were able to get in the same day to get the job done. I would give them six stars if I could. "

Tom C on November 2025

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 quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!

"They did an excellent job. They were able to get in the same day to get the job done. I would give them six stars if I could. "

Tom C on November 2025


Bowen Ridge Construction

5.00(
7
)
Approved Pro

Bowen Ridge Construction

5.00(
7
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
14 local quotes requested

We are a full service building and remodeling contractor. We have been in the construction industry for more than 20 years. We remodel all aspects of your home, Kitchens, Baths, living areas and so much more. We also will build new homes, decks, garages, and out buildings. Our ability to accurately price jobs, puts us in a league of our own. We have the Best People, Best Products, Best Results, Everytime. Come experience the differences.

"Joe and his team put a beautiful addition on to my house. He did a great job of communicating and worked with us on pricing throughout. I would recommend him without hesitation."

Jesse Y on May 2024

We are a full service building and remodeling contractor. We have been in the construction industry for more than 20 years. We remodel all aspects of your home, Kitchens, Baths, living areas and so much more. We also will build new homes, decks, garages, and out buildings. Our ability to accurately price jobs, puts us in a league of our own. We have the Best People, Best Products, Best Results, Everytime. Come experience the differences.

"Joe and his team put a beautiful addition on to my house. He did a great job of communicating and worked with us on pricing throughout. I would recommend him without hesitation."

Jesse Y on May 2024

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FAQs for addition to existing structure building service projects in Nassau, NY

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Nassau, NY 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.