Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Montauk, NY

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.

Top-Rated Addition to existing structure builders in Montauk - Updated Nov 2026

Avatar for Rea Professional Construction INC
Rea Professional Construction INC
5.0(
24
)
Addition to Existing Structure - Build

Serving Montauk, NY and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Jaime and his crew built a cedar deck and constructed a crawl space with access doors for my new manufactured home in Montauk. Great communication, the carpentry was well done and in the timeframe that was expected. Would use again for other projects"
Before
Before
Bathroom Renovation
After
After

+223

Response time6 days
Recommended by100%of homeowners
Avatar for Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
4.7(
13
)
Addition to Existing Structure - Build

Serving Montauk, NY and surrounding areas

Approved

In business since 1986

Free estimates

Customers say: True professional

"Arthur gave us a fair and competitive estimate and was able to start work quickly thereafter. He and his team did an excellent job gutting and totally remodeling two bathrooms and a closet as well as redoing some of the wood flooring, moving vents, and moving hallways. Arthur himself was at the home everyday and did the important work himself. He also went the extra mile in helping us with small projects around the major project as they came up. He was extremely responsive in provided us with timely updates. When complications occurred (due to the house having not been renovated in 40 years) he was clear and helpful in keeping the project on schedule. He was extremely honest and I trusted him to be alone in my house for weeks on end with his team. I would/plan to work with Arthur again in the future for my home renovation projects."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

Response time2 days
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Alta Renovations Corp
Alta Renovations Corp
5.0(
30
)
Addition to Existing Structure - Build

Serving Montauk, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Warranties offered

"Excellent! Alta Renovations did my bathroom from the studs out. Tile, sheetrock, floor, vanity and the plumbing and towel hardware. The job was was in a co-op, with very frustrating "rules" and "requirements ". Most contractors would not want to participate (paperwork, time schedules and parking restrictions). Jose, the owner of Alta, abided by all the rules, whiles still keeping a smile!!! His workers worked neatly and orderly, knew exactly what had to be done, and did it. Very pleased. I'm recommending him to all my ? ? ? ? ?"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+26

Response time8 hrs
22 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Agate & Co. Builders
Agate & Co. Builders
5.0(
13
)
Addition to Existing Structure - Build

Serving Montauk, NY and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"Jimmy was very professional. He helped with every step of the project including suggesting cabinet makers. He measured and ordered the cabinets for me. He was very flexible and responsive throughout the process. Whenever I was not happy with something, he was very responsive and did his best to correct it. I am very happy with the kitchen."
Sag Harbor Re-Build
Sag Harbor Re-Build
Sag Harbor Re-Build
Sag Harbor Re-Build
Sag Harbor Re-Build

+40

Response time2 days
13 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Patzan Home Improvement Inc
Patzan Home Improvement Inc
5.0(
6
)
Addition to Existing Structure - Build

Serving Montauk, NY and surrounding areas

Approved

In business since 2008

Emergency services offered

Customers say: True professional

"We are very happy and satisfied with the projects completed by Patzan at our home. Mr. Patzan is very professional, knowledgeable and pays great attention to detail to deliver a good durable, functional and great look looking finish at a decent price. Mr. Patzan Communication is excellent and he answers all my questions. We did two projects with Patzan and we are planning my our next one with Patzan. I really recommend this company."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+29

5 neighbors recently requested a quote
Recommended by83%of homeowners
MGT Construction, Corp.
4.1(
17
)
Addition to Existing Structure - Build

Serving Montauk, NY and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"MGT Construction Corporation was everything I wanted and more. They were prompt. The work was high quality. Steve Kaplan, Mario, Steve, et al were very professional and easy to work with. Steve Kaplan was excellent in following through with everything. The price was excellent. They were very knowledgeable and understood design. After it was finished, Steve followed through on offers to do some additional work as a client courtesy."
Greenport Second Floor Addition
Orient Complete Ground up House
Greenport Complete Ground Up House
Kitchen Remodeling Project
Orient Complete House Build - Bathrooms

+172

Response time1 day
3 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Enterprise Global Group
Enterprise Global Group
4.9(
7
)
Addition to Existing Structure - Build

Serving Montauk, NY and surrounding areas

Approved

In business since 1995

Free estimates

Small jobs welcome

"Gabrielle is extremely professional, knowledgeable, and reliable. We recently needed repairs on two of our new kitchen cabinets, and after contacting him, he was able to come by within hours to assess the issue and complete the repairs the very next day. His workmanship was exceptional, and the cabinets now look perfect. We truly appreciated his responsiveness, attention to detail, and commitment to quality. I highly recommend his services to anyone looking for a skilled and dependable carpenter."
Deck remodel
Deck remodel
Deck remodel
Deck remodel
Deck remodel

+1

1 neighbors recently requested a quote
...
Showing 1-10 of 402
FAQs for addition to existing structure building service projects in Montauk, 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 Montauk, 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.