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

Avatar for Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
4.7(
13
)
Addition to Existing Structure - Build

Serving New-suffolk, 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."
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+20

Response time2 days
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Inson Dubois Wood LLC
Inson Dubois Wood LLC
5.0(
17
)
Addition to Existing Structure - Build

Serving New-suffolk, NY and surrounding areas

Approved

In business since 2005

Customers say: True professional

"We live in a prewar coop building in Manhattan and were in need of a kitchen, living and dining room/den renovation. Because of the limitations in our building, we were not optimistic that many changes could be made that would dramatically alter the feel/function of the space. Inson Wood proved us completely wrong. With his architectural eye and his impeccable design aesthetic we (and everyone who has been here before and after) experiences our apartment as an entirely different living space. Even family members are shocked at the transformation. I think that what Inson accomplished was the product of a few significant factors. First, Inson asks you what you want and seriously considers how you live. If Inson thinks that different approaches should be considered for what you want, he provides renderings of each option so that you can easily visualize and imagine them. Ultimately, Inson respects your preferences and works with them, elevating them to a level far above what you had imagined. Inson uses the highest quality vendors (whom we NEVER would have found) and expertly guides you through choices (note: follow his recommendations!!!)- our walls would never have had dimension and our kitchen backsplash never have been so unique (two examples) if not for the artisans that Inson uses. Inson is also willing to have you be as much or as little involved in the process as you want to be. I did go with Inson to choose many pieces of furniture but realized after a certain point that his taste point made me confident in him choosing much finishing work (ex: window treatments, decorative cushions, which I love) without me. As with all design work, there are always glitches and Inson was extremely responsive and responsible for taking care of those as they came up. We are nothing less than thrilled to come home each evening and enjoy our space, which feels like a luxurious retreat perfectly tailored to us."
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+11

Recommended by100%of homeowners
Avatar for FD Building Co.
FD Building Co.
3.9(
27
)
Addition to Existing Structure - Build

Serving New-suffolk, NY and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"Our first architect on this project quoted us an estimate that was so high that we were about to give up on the project. After a consultation with FD we came up with a new plan that brought the job in at a third of the price. Dennis is organized and highly responsive. All in all it was a great experience."
 kitchen
Kitchen/Floor/Windows
Fireplace
Kitchen
 Honduran Mahogany library

+101

Response time1 day
8 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Two Stories Building Co
Two Stories Building Co
4.4(
8
)
Addition to Existing Structure - Build

Serving New-suffolk, NY and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"If there were a way to ADD Stars to the Review, I would!!! It is Very Rare in Today's Times to locate a Contractor with a Superb Work Ethic. This is one of those Rare Times. 10 Stars Go to Two Stories Woodworking for their Excellent Work Performed on a Timely and Professional Manner. Beautiful Workmanship. Thank-You!"
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 M Adorno, LLC
M Adorno, LLC
4.0(
7
)
Addition to Existing Structure - Build

Serving New-suffolk, NY and surrounding areas

Approved

Free estimates

Customers say: True professional

"I ordered a shed from Walmart not realizing the challenges associated with putting it together. Thankfully, Angie’s list had a handyman available to help me!"
Response time2 days
Response rate100%
1 neighbors recently requested a quote
MGT Construction, Corp.
4.1(
17
)
Addition to Existing Structure - Build

Serving New-suffolk, 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
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FAQs for addition to existing structure building service projects in New-suffolk, 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 New-suffolk, 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.