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Find Addition to existing structure builders in Old Westbury

Atlantic Shore Builders & Developers

5.00(
3
)
Approved Pro

Atlantic Shore Builders & Developers

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
21 local quotes requested

We are committed to excellence in 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. We are watchful of our customer's interests and make their concerns the basis of our business. Give us a call for a quote today!

"Friendly, low price, and best of all the painter, Francisco, is a REAL professional who’s not about doing a slipshod job and leaving. He took as many days as he needed at a flat rate and ensured the job was top quality."

Alexander M on October 2021

We are committed to excellence in 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. We are watchful of our customer's interests and make their concerns the basis of our business. Give us a call for a quote today!

"Friendly, low price, and best of all the painter, Francisco, is a REAL professional who’s not about doing a slipshod job and leaving. He took as many days as he needed at a flat rate and ensured the job was top quality."

Alexander M on October 2021


Family owned business with over 20 years of experience handling all your Remodeling Needs for residential and commercial- Kitchen and Bathrooms, Room Additions, Basements, etc.


Avatar for JLR Design And Building Consultants, LLC

JLR Design And Building Consultants, LLC

5.00(
5
)
Approved Pro

JLR Design And Building Consultants, LLC

5.00(
5
)
Approved Pro
Customers say: Quick response
4 years of experience
Free onsite estimate

At JLR Design And Building Consultants, LLC we pride ourselves on being the best Additions and Remodels company in the area. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

"JLR Design And Building Consultants, LLC was the best. thanks so much,"

Aaron N on August 2025

At JLR Design And Building Consultants, LLC we pride ourselves on being the best Additions and Remodels company in the area. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

"JLR Design And Building Consultants, LLC was the best. thanks so much,"

Aaron N on August 2025


Avatar for Exterior Team Home Services, Inc.

Exterior Team Home Services, Inc.

4.95(
22
)
Approved Pro

Exterior Team Home Services, Inc.

4.95(
22
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
9 years of experience

Exterior Team Home Services, Inc takes 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. Call Exterior Team Home Services, Inc today!

"Ronald and his Team did an excellent job for a very good price. Very professional. Pointed out some things that needed attention and then took care of it. The workmanship and customer service is better than any other craftman I have ever hired. I will keep Exterior Team Home Service number available to recommend to anyone that asks if "I know someone who...." I trust Exterior Team Home and will use them in the future."

Ed S on September 2023

Exterior Team Home Services, Inc takes 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. Call Exterior Team Home Services, Inc today!

"Ronald and his Team did an excellent job for a very good price. Very professional. Pointed out some things that needed attention and then took care of it. The workmanship and customer service is better than any other craftman I have ever hired. I will keep Exterior Team Home Service number available to recommend to anyone that asks if "I know someone who...." I trust Exterior Team Home and will use them in the future."

Ed S on September 2023


Avatar for Northgate Home Improvement Corp.

Northgate Home Improvement Corp.

4.99(
82
)
Approved Pro

Northgate Home Improvement Corp.

4.99(
82
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
27 local quotes requested

Please call my mobile phone for faster service: 516-449-8700!! Also, please provide a call back number in your inquiry. Northgate Home Services is a complete home services company which will handle all of your home improvement needs - inside and out. I will personally work with you to design and complete your home improvement project so that it meets all of your needs and expectations. Northgate Home Services is licensed and insured in both Suffolk and Nassau counties.

"I have had Jeff and his guys renovate my ranch house in Melville. He has done 2 bathrooms, my basement and my kitchen. He has always been reliable and done great work. The house looks like new. He quickly corrects any problems and is always in touch. He and his guys are friendly and neat. His estimates are reasonable. I strongly recommend Northgate Home Improvement."

Peter P on March 2025

Please call my mobile phone for faster service: 516-449-8700!! Also, please provide a call back number in your inquiry. Northgate Home Services is a complete home services company which will handle all of your home improvement needs - inside and out. I will personally work with you to design and complete your home improvement project so that it meets all of your needs and expectations. Northgate Home Services is licensed and insured in both Suffolk and Nassau counties.

"I have had Jeff and his guys renovate my ranch house in Melville. He has done 2 bathrooms, my basement and my kitchen. He has always been reliable and done great work. The house looks like new. He quickly corrects any problems and is always in touch. He and his guys are friendly and neat. His estimates are reasonable. I strongly recommend Northgate Home Improvement."

Peter P on March 2025


"Office renovation"

don e on July 2021

Bi Bi Delevpment Group

"Office renovation"

don e on July 2021


Utopia Home Improvement LLC

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Utopia Home Improvement LLC

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

Utopia Home Improvement LLC is committed to excellence in 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.

Utopia Home Improvement LLC is committed to excellence in 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.


Avatar for L&A CONSTRUCTION

L&A CONSTRUCTION

5.00(
2
)
Approved Pro

L&A CONSTRUCTION

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
14 years of experience

We are committed to excellence in 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. Call us today!

"The work was done very nite and profesional and the contractor was on time with the entire project and the final project turned out beutiful. And i willing to recomenden and hire him again"

Yadira C on August 2023

We are committed to excellence in 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. Call us today!

"The work was done very nite and profesional and the contractor was on time with the entire project and the final project turned out beutiful. And i willing to recomenden and hire him again"

Yadira C on August 2023


Avatar for Old World Custom Construction, Inc.

Old World Custom Construction, Inc.

4.43(
7
)
Approved Pro

Old World Custom Construction, Inc.

4.43(
7
)
Approved Pro
Customers say: Terrific value
37 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 bathroom 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!

"We had a great experience with Old World Construction for building our deck. They showed up when they were supposed to. The sent a proposal as soon as possible and started the work right away. They had the entire project finished before we knew it. The quality was perfect and the customer service was great. I would recommend them to anybody."

Michael Z on July 2023

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 bathroom 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!

"We had a great experience with Old World Construction for building our deck. They showed up when they were supposed to. The sent a proposal as soon as possible and started the work right away. They had the entire project finished before we knew it. The quality was perfect and the customer service was great. I would recommend them to anybody."

Michael Z on July 2023


Alpha Construct

5.00(
2
)
Approved Pro

Alpha Construct

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

We are committed to excellence in 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 ess

"Very professional and easy to work with!"

Lamar P on July 2023

We are committed to excellence in 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 ess

"Very professional and easy to work with!"

Lamar P on July 2023

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FAQs for addition to existing structure building service projects in Old Westbury, 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 Old Westbury, 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.