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

Avatar for CHATEL Construction Corp
CHATEL Construction Corp
5.0(
85
)
Addition to Existing Structure - Build

Serving Roslyn Heights, NY and surrounding areas

Approved

In business since 1983

Free estimates

Warranties offered

"Scott and his team were professional, provided high quality work, and came back to service a couple of lingering issues that resulted immediately and without chasing. he is, and has been, my "go-to" for contracting on all my properties. additionally, we bid each job, and so far his costs have been fair, and we have never been up charged unexpectedly."
Response time3 days
Response rate100%
4 neighbors recently requested a quote
Avatar for TAS Construction Corporation
TAS Construction Corporation
4.7(
15
)
Addition to Existing Structure - Build

Serving Roslyn Heights, 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 Roslyn Heights, 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 Roslyn Heights, NY and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"I had my second floor dormer done by All Island Additions and Renovations, and they did an amazing job. The work was clean, professional, and done the right way. I?m really happy with the results and would absolutely recommend them to anyone looking to build a dormer or renovate their home. Wil was professional , explain everything clearly, and made whole process really comfortable."
Before
After
Kitchen remodel
Bathroom remodel
Bathroom remodel

+71

Response time1 day
Response rate100%
Recommended by81%of homeowners
Avatar for AR Home Construction LLC
AR Home Construction LLC
5.0(
29
)
Addition to Existing Structure - Build

Serving Roslyn Heights, NY and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

A.R. Home Construction is a premier design and build construction company specializing in luxury new home construction and high-end remodeling projects. With expertise in all aspects of construction, from conceptual design to final touches, A.R. Home Construction delivers exquisite and luxurious transformations. Our team of skilled professionals is dedicated to exceeding client expectations and creating stunning spaces that reflect unparalleled craftsmanship. Explore luxury and sophistication at our home design showroom, offering a curated selection of top -quality products for your project.

My jobs
My jobs
My jobs
My jobs
My jobs

+73

13 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Sun Luxury Homes
Sun Luxury Homes
5.0(
15
)
Addition to Existing Structure - Build

Serving Roslyn Heights, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"Working with Sun Lux & Ace was a remarkable experience. We had originally met Ace at an Open House for one of his other Builds. From there, we realized we had to work with him from seeing his quality of work and expertise. Ace handled everything from assisting us in designing the home with his Architect, to submitting the plans and all amendments, to expediting the permits, to delivering an end product that we are extremely happy with. He was kind enough to guide us in upgrades that weren’t originally part of our original scope of work that made sense and told us to stay away from certain products/design choices that were a waste. On top of that, he was extremely respectful and understanding throughout the entire process. We always felt we were in safe hands with Ace and his team. Looking forward to building another one with him within the next year."
Exterior
Living Room
Kitchen
Hicksville 3
Formal Living

+83

Response time3 hrs
Response rate100%
8 neighbors recently requested a quote
Avatar for Powers Performance Construction LLC
Powers Performance Construction LLC
4.3(
27
)
Addition to Existing Structure - Build

Serving Roslyn Heights, 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
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FAQs for addition to existing structure building service projects in Roslyn Heights, 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 Roslyn Heights, 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.