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

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

Serving East Hampton, NY and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Jaime and his crew were wonderful to work with. They stuck to the end of the job until every single item on the check list was done. This I find rare in the construction business. They were courteous and mindful of schedule. I recommend Rea Construction to anyone looking for quality work."
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 East Hampton, 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 East Hampton, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Warranties offered

"Jose and his crew did an outstanding job on our extensive interior and exterior renovation, which included a new addition. The project covered everything from a new structural roof with shingles and skylights to new construction windows and doors, siding, a Trex deck, and fully renovated kitchen, bathroom, and laundry room. They also refinished a bedroom and installed beautiful hardwood floors. As with any large project, a few unexpected challenges came up, but Jose handled them with professionalism and kept everything moving forward smoothly. His craftsmanship is excellent, and he’s not only easy to work with but also patient and highly skilled at problem-solving. I wouldn’t hesitate to hire Jose again for future projects and highly recommend him to anyone looking for quality work and a reliable contractor."
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 A-Frame Construction LLC
A-Frame Construction LLC
4.7(
14
)
Addition to Existing Structure - Build

Serving East Hampton, NY and surrounding areas

Approved

In business since 2023

Free estimates

Small jobs welcome

"Exceptional craftsmanship. A-Frame Construction provided a very meticulous attention to detail with designing and building of our new composite deck. We look forward to working with this company again for our future home construction needs. Regards, Brian"
Hampton Bays Interior job
Hampton Bays Interior job
Hampton Bays Interior job
Hampton Bays Interior job
Medford Deck

+112

Response time4 hrs
Response rate100%
10 neighbors recently requested a quote
Avatar for Agate & Co. Builders
Agate & Co. Builders
5.0(
13
)
Addition to Existing Structure - Build

Serving East Hampton, NY and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"Excellent job. Showed up on time and did a nice clean up after. This job was to replace a hole in the ceiling with sheetrock and painting. Very good work; I can't even see where he patched it, so smooth. I will definitely use James Agate Contracting again."
Sag Harbor Re-Build
Sag Harbor Re-Build
Sag Harbor Re-Build
Sag Harbor Re-Build
Sag Harbor Re-Build

+40

Response time2 days
12 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Two Stories Building Co
Two Stories Building Co
4.4(
8
)
Addition to Existing Structure - Build

Serving East Hampton, NY and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"The work that was done was exceptional! It was exactly what I wanted and done with great craftsmanship. They were easy to talk to and had great communication as far as timelines and cost. I would highly recommend them and would have them do any work needed again without question. Totally professional!"
Arch
Arch Progress
28' Arch
Front Door
Crown and Casing

+48

Response time5 hrs
5 neighbors recently requested a quote
Recommended by33%of homeowners
Avatar for Premier Home Remodeling & Design
Premier Home Remodeling & Design
3.9(
25
)
Addition to Existing Structure - Build

Serving East Hampton, NY and surrounding areas

Approved

In business since 2019

Free estimates

Small jobs welcome

"Premier Home Remodeling was able to walk my family and me through the whole process of remodeling our kitchen and were able to save us time, money, and stress by getting us exactly what we needed at an affordable price. They were a one-stop shop for everything, their cabinet selection is beautiful and their selection of tile was far more diverse than most other showrooms we visited. In addition, they acted as our designer and were able to guide us on the different styles and layouts that would work together to make our kitchen our dream kitchen. I highly recommend this business! - Adam T."
custom niche
vanity and tops
vanity and tops
cabinets
mirror

+53

Response time2 days
Response rate87%
10 neighbors recently requested a quote
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FAQs for addition to existing structure building service projects in East Hampton, 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 East Hampton, 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.