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*The Angi rating for Contractor Service companies in Sag Harbor, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Contractor Service needs.
*The HomeAdvisor rating for Contractor Service companies in Sag Harbor, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Contractor Service needs.
Last update on January 06, 2026
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Hampton Bay Construction - Babylon Bay Construction
Hampton Bay Construction - Babylon Bay Construction
Owner owned & operated. Full service remodeling company specializing in medium to large projects. Serving Suffolk county and the Hamptons. High end building and remodeling firm. Expect excellent quality and customer service. Permit and Variance Specialists.
"Babylon Bay (AJ's team) did a great job, from Sam the project manager to Wilmer and Louis the tradesman who worked on my project. They are truly a professional organization. I would recommend Babylon Bay to my friends and neighbors."
Tony M on January 2026
Owner owned & operated. Full service remodeling company specializing in medium to large projects. Serving Suffolk county and the Hamptons. High end building and remodeling firm. Expect excellent quality and customer service. Permit and Variance Specialists.
"Babylon Bay (AJ's team) did a great job, from Sam the project manager to Wilmer and Louis the tradesman who worked on my project. They are truly a professional organization. I would recommend Babylon Bay to my friends and neighbors."
Tony M on January 2026

JA Carpentry Works LLC
JA Carpentry Works LLC
Our company prides itself on reliability, integrity and quality work. When JA Carpentry Works, LLC, is hired, we make it a point to provide the highest level of customer service. We work with both residential and commercial clients, and apply the same attention to detail regardless of project size or complexity. Whether you need a small repair or NEW Renovation JA Carpentry Works, LLC, is the company to call. We look forward to earning your business! Thank you!
"Excellent job in a very professional manner. Javier was courteous and very responsive and on top of things I would recommend this company and him."
nitsana s on November 2023
Our company prides itself on reliability, integrity and quality work. When JA Carpentry Works, LLC, is hired, we make it a point to provide the highest level of customer service. We work with both residential and commercial clients, and apply the same attention to detail regardless of project size or complexity. Whether you need a small repair or NEW Renovation JA Carpentry Works, LLC, is the company to call. We look forward to earning your business! Thank you!
"Excellent job in a very professional manner. Javier was courteous and very responsive and on top of things I would recommend this company and him."
nitsana s on November 2023

Alta Renovations Corp
Alta Renovations Corp
Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!
"They did an excellent job. They arrived on time did a great job and cleaned up after the job was finished. They finished everything in one day.I highly recommend them."
Edward B on November 2025
Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!
"They did an excellent job. They arrived on time did a great job and cleaned up after the job was finished. They finished everything in one day.I highly recommend them."
Edward B on November 2025

Rea Professional Construction INC
Rea Professional Construction INC
"Rea Pro Construction specializes in Kitchen Remodeling, Bathroom Remodeling, Carpentry, Home Building, and Painting. We service The Hamptons, stretching from Montauk to Westhampton. We're proud to be one of The Hamptons premier remodelers helping to turn houses into homes.
"We found REA Pro through positive reviews online. Jaime Rea was one of several contractors we interviewed. He is very prompt, energetic, and an excellent communicator. After an initial phone call and site visit, Jaime provided the estimate within a couple of days. The project – which included renovating 5 decks, repairing siding, and painting the exterior of the house – was started on time and completed within Jaime’s time estimate. His crew was very professional and personable and a pleasure to work with. We were really impressed with the quality of the work and their attention to detail. We are very happy with the final result, and would hire Jaime and his crew again for other projects."
Ben L on November 2022
"Rea Pro Construction specializes in Kitchen Remodeling, Bathroom Remodeling, Carpentry, Home Building, and Painting. We service The Hamptons, stretching from Montauk to Westhampton. We're proud to be one of The Hamptons premier remodelers helping to turn houses into homes.
"We found REA Pro through positive reviews online. Jaime Rea was one of several contractors we interviewed. He is very prompt, energetic, and an excellent communicator. After an initial phone call and site visit, Jaime provided the estimate within a couple of days. The project – which included renovating 5 decks, repairing siding, and painting the exterior of the house – was started on time and completed within Jaime’s time estimate. His crew was very professional and personable and a pleasure to work with. We were really impressed with the quality of the work and their attention to detail. We are very happy with the final result, and would hire Jaime and his crew again for other projects."
Ben L on November 2022

Greg Home Improvement, Inc.
Greg Home Improvement, Inc.
Greg Home Improvement Inc is a family owned and operated business . The president, Greg Estevez is the person in charge to estimate and supervise all the work, also one of the most complete of the very experienced working team. We been in business for 19 years performing all phases of construction in New York City, Nassau and Suffolk with a clean record in Consumer Affairs and Better Business Bureau with A+ rating. Greg home improvement Inc do not use subcontractors , only electricians and plumbers. We are licensed and insured.
"No job to small or to big for Greg, they do a good job!"
JOHN O on June 2023
Greg Home Improvement Inc is a family owned and operated business . The president, Greg Estevez is the person in charge to estimate and supervise all the work, also one of the most complete of the very experienced working team. We been in business for 19 years performing all phases of construction in New York City, Nassau and Suffolk with a clean record in Consumer Affairs and Better Business Bureau with A+ rating. Greg home improvement Inc do not use subcontractors , only electricians and plumbers. We are licensed and insured.
"No job to small or to big for Greg, they do a good job!"
JOHN O on June 2023
Design Development Construction Services, LLC
Design Development Construction Services, LLC
Hiring a general contractor is the first step in taking control of your home improvement project. Having an industry professional like Design Development Construction Services, LLC coordinate and manage all aspects of your project means fewer delays, tighter quality control and a more successful outcome. All of these contribute to a greater return on your investment. We have been in business since 1974 and would like the opportunity to speak with you about your home improvement needs.
"Very experienced company with an amazing wood working facility for custom projects. Excellent communication and customer service."
Liat A on July 2021
Hiring a general contractor is the first step in taking control of your home improvement project. Having an industry professional like Design Development Construction Services, LLC coordinate and manage all aspects of your project means fewer delays, tighter quality control and a more successful outcome. All of these contribute to a greater return on your investment. We have been in business since 1974 and would like the opportunity to speak with you about your home improvement needs.
"Very experienced company with an amazing wood working facility for custom projects. Excellent communication and customer service."
Liat A on July 2021

Refined Renovators & Design
Refined Renovators & Design
At Refined Renovators & Design, we specialize in transforming spaces with our design expertise for kitchens, bathrooms, and all aspects of residential construction. Our team is highly skilled and experienced in using design programs such as 2020 Design and AutoCAD to bring your vision to life. License #HI-71919
"The work came out great on my bathroom remodel. The crew worked very neatly cleaned up every day. Very nice people. I would use them again."
Tom K on November 2025
At Refined Renovators & Design, we specialize in transforming spaces with our design expertise for kitchens, bathrooms, and all aspects of residential construction. Our team is highly skilled and experienced in using design programs such as 2020 Design and AutoCAD to bring your vision to life. License #HI-71919
"The work came out great on my bathroom remodel. The crew worked very neatly cleaned up every day. Very nice people. I would use them again."
Tom K on November 2025

Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
We are a building, remodeling, home improvement firm backed with 31 yrs experience. I, Arthur DeRosa, personally over see every project, big or small, from start to finish. I have an artists soul and every project that I am privileged to do is a reflection of that. With performance backed by experience and attention to detail, your project will be in good hands. The number of employees varies depending on work load. Sub-contractors are used when necessary. Proposals and estimates are free and include payment schedules with start and completion dates. Super Service Award winner for 2016! Call us today to schedule your appointment - (631) 774-1231
"Artie & Mike are simply the best. I used them to: 1) Build a LARGE extension to my house and redo my entire kitchen and dining room. The job was completed on time and on budget. Throughout the process Artie was transparent & professional. EVERY person who has stepped into my house has complimented at the detailed perfection. 3) Artie built us a custom walk in pantry 2) Built 2 large decks in the backyard as well as an outdoor shower. This project was completed on time, on budget while exceeding all expectations. If you are looking for a contractor and crew that is responsible, responsive, polite, creative and delivers the HIGHEST LEVEL of quality - Artie is the one."
Constantine M on March 2023
We are a building, remodeling, home improvement firm backed with 31 yrs experience. I, Arthur DeRosa, personally over see every project, big or small, from start to finish. I have an artists soul and every project that I am privileged to do is a reflection of that. With performance backed by experience and attention to detail, your project will be in good hands. The number of employees varies depending on work load. Sub-contractors are used when necessary. Proposals and estimates are free and include payment schedules with start and completion dates. Super Service Award winner for 2016! Call us today to schedule your appointment - (631) 774-1231
"Artie & Mike are simply the best. I used them to: 1) Build a LARGE extension to my house and redo my entire kitchen and dining room. The job was completed on time and on budget. Throughout the process Artie was transparent & professional. EVERY person who has stepped into my house has complimented at the detailed perfection. 3) Artie built us a custom walk in pantry 2) Built 2 large decks in the backyard as well as an outdoor shower. This project was completed on time, on budget while exceeding all expectations. If you are looking for a contractor and crew that is responsible, responsive, polite, creative and delivers the HIGHEST LEVEL of quality - Artie is the one."
Constantine M on March 2023
Palmira Design & Construction, LLC
Palmira Design & Construction, LLC
Palmira Design & Construction 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. Call us today!
"Excellent contractor who organized a group of craftsmen - carpenters, plumbers, electricians, tile people- and completed two bathrooms in 3 weeks in time for new tenants move in. Great design ideas and high quality materials. Very skilled and high standards and worksmanship. Hal K Sag Harbor NY"
Hal K on July 2022
Palmira Design & Construction 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. Call us today!
"Excellent contractor who organized a group of craftsmen - carpenters, plumbers, electricians, tile people- and completed two bathrooms in 3 weeks in time for new tenants move in. Great design ideas and high quality materials. Very skilled and high standards and worksmanship. Hal K Sag Harbor NY"
Hal K on July 2022

Agate & Co. Builders
Agate & Co. Builders
If you are looking for an experienced, reliable, and honest contractor to help you with your next construction project then consider Agate & Co. Builders. As a father and son team we have performed a variety of construction projects in the New York Tri-State area including; kitchens, baths, decks, windows, doors, flooring, trim, siding, tile, additions, and finished basements. At Agate & Co. Builders we have more than 35 years of construction experience working for us. We pride ourselves on our long history of outstanding craftsmanship and customer service, which is unparalleled in the industry. We remain a small construction company that performs most of the work ourselves using a few, hand-selected and highly qualified sub-contractors when needed. This consistently allows our high standards to be applied and is demonstrated in the quality of our work. We truly love what we do and look forward to helping you make the home of your dreams.
"Jim and his crew went over and above our expectations. They did a beautiful job on our new deck. When completed, they cleaned up and carted away all scraps. A truly professional job by all."
William B on May 2024
If you are looking for an experienced, reliable, and honest contractor to help you with your next construction project then consider Agate & Co. Builders. As a father and son team we have performed a variety of construction projects in the New York Tri-State area including; kitchens, baths, decks, windows, doors, flooring, trim, siding, tile, additions, and finished basements. At Agate & Co. Builders we have more than 35 years of construction experience working for us. We pride ourselves on our long history of outstanding craftsmanship and customer service, which is unparalleled in the industry. We remain a small construction company that performs most of the work ourselves using a few, hand-selected and highly qualified sub-contractors when needed. This consistently allows our high standards to be applied and is demonstrated in the quality of our work. We truly love what we do and look forward to helping you make the home of your dreams.
"Jim and his crew went over and above our expectations. They did a beautiful job on our new deck. When completed, they cleaned up and carted away all scraps. A truly professional job by all."
William B on May 2024
The Sag Harbor, NY homeowners’ guide to contractor services
From average costs to expert advice, get all the answers you need to get your job done.

Looking to turn your yard into a hockey or ice skating paradise this winter? Use this backyard ice rink cost guide to see what the installation will total.

Building permits are essential. Here’s everything you need to know about building permit costs to budget accordingly for your building project.

Use our guide to calculate the cost to install a stair lift in your home. Prices depend on the type of stair lift, including the seat style and other advanced features.

To make your home project stress-free, we’ve compiled a list of 12 questions to ask your contractor during every stage, from first contact to project wrap-up.

A roll-in shower can increase safety in the bathroom and come with a high ROI. Read this guide to learn about how much a roll-in shower costs.

Designing and building dormer framing may not be a DIY task, but it does help to know how the addition takes shape. Here are the ins and outs of dormer framing.
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- 🌱 "Mow a small front yard"
- 🛠 "Fix a leaking pipe under the sink"
- 🏠 "Repair shingles on an asphalt roof"

