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

Avatar for Fine Designs by US Home Remodeling
Fine Designs by US Home Remodeling
5.0(
32
)
Addition to Existing Structure - Build

Serving Wantagh, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Free estimates

Emergency services offered

"My wife had visualized her dream kitchen for years. Fine design came in and answered all her questions and delivered the kitchen that made her dreams come true. What impressed us in addition to the quality of the work was the consideration for the cleanliness of our home. I was so impressed that after the kitchen was done I had Fine Design come in to redo the rest of my home. From all the bathrooms to all the bedrooms and even the laundry room. My wife and I are delighted we contracted with Fine Design and are sure you would be too."
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project

+149

Response time1 day
4 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for TAS Construction Corporation
TAS Construction Corporation
4.7(
15
)
Addition to Existing Structure - Build

Serving Wantagh, NY and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"Anthony Scardino, the owner of TAS contracting and his crew did an amazing job. He was always reachable and easy to talk to and work with. They were reliable, neat and clean. Though my job was a small one, I would mosts definitely hire him for any future work needed in my home and I would highly recommend him to anyone looking for a great contractor!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+8

Response time2 days
Response rate100%
Recommended by91%of homeowners
Avatar for BuildingLI.com - BLI Facilities LLC
BuildingLI.com - BLI Facilities LLC
5.0(
32
)
Addition to Existing Structure - Build

Serving Wantagh, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Eddie was great to work with! We had a limited time frame to adhere to town inspections and Eddie and his team knew exactly what we needed and quickly got the job done. The results were great and even the inspector acknowledged the impressive repair. They were able to put a knocked out garage wall back on the foundation and repair the interior dry wall. I would recommend this company for any professional contract work due to their reasonable price, ease to work with and quality of work."
before demo
kitchen demolition
demolition complete
kitchen tile job in progress
kitchen tile

+172

Response time7 hrs
Recommended by76%of homeowners
Avatar for All Island Additions and Renovations
All Island Additions and Renovations
5.0(
20
)
Addition to Existing Structure - Build

Serving Wantagh, NY and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"Will is one of the best contractor I worked with, he is very detailed oriented, on schedule, great communication, very responsive, he try his best to do the right thing. He doesn’t use cheap materials or try to cut corners. I will 100 % recommend him to my family and friends."
Before
After
Kitchen remodel
Bathroom remodel
Bathroom remodel

+71

Response time1 day
Response rate100%
Recommended by81%of homeowners
Avatar for Homes & Beyond, Inc.
Homes & Beyond, Inc.
4.8(
20
)
Addition to Existing Structure - Build

Serving Wantagh, NY and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"I hired Miguel and his team to change all my closet and bedroom doors and install a celining fan in the master bedroom. The team showed up on time and they cleaned as they worked. I highly recommend!"
Kitchen
Kitchen
Kitchen
Kitchen open layout
Kitchen open layout

+50

Response time6 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Powers Performance Construction LLC
Powers Performance Construction LLC
4.3(
27
)
Addition to Existing Structure - Build

Serving Wantagh, NY and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"They did an excellent job in our bathroom. Reasonable, professional and quality of work was amazing. I highly recommend this company. I would hire them again. Kept us informed along the way to ensure we got exactly what we wanted. Started job in time and finished in time. Amazing company and very pleasant to work with."
Decks and Porches Project
Remodeling - General Project
General Remodeling Project
Finished Carpentry and Woodworking Project
Gazebo

+53

Response time2 days
Response rate100%
4 neighbors recently requested a quote
Avatar for CGP Construction
CGP Construction
4.5(
20
)
Addition to Existing Structure - Build

Serving Wantagh, NY and surrounding areas

Approved

In business since 2015

Free estimates

Small jobs welcome

"Gary and his crew,and their work is top notch. In addition,the honesty,integrity and customer service truly REFRESHING. My family really appreciate everything he has done from beginning to end. We would be happy to do business with him again in the future. Thank you"
Pool  Foundation
Pool Foundation
Pool Foundation
Elevated Flood Equipment
Pool Foundation

+16

Response time4 hrs
Response rate96%
2 neighbors recently requested a quote
JMC Services Corporation
5.0(
14
)
Addition to Existing Structure - Build

Serving Wantagh, NY and surrounding areas

Approved

In business since 2022

Free estimates

Offers commercial services

"I cannot speak highly enough of the exceptional craftsmanship and professionalism displayed by Mr. Casteñeda and the employees ofJMC service corps. Their attention to detail and precision in installing the porch railing was truly impressive. Not only did they deliver outstanding results, but they also demonstrated a deep understanding of design aesthetics, seamlessly blending the railing with the overall architecture of the porch. It is evident that they take great pride in their work, and their commitment to excellence is truly commendable. I wholeheartedly recommend their services to anyone seeking top-tier contracting work."
Recommended by64%of homeowners
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FAQs for addition to existing structure building service projects in Wantagh, 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 Wantagh, 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.