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Find Addition to existing structure builders in Roslyn

Avatar for Greg Home Improvement, Inc.
Greg Home Improvement, Inc.
4.7(
86
)
Addition to Existing Structure - Build

Serving Roslyn, NY and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"Greg & his team did a wonderful job on my renovation project, with exceptional marks for honesty and communication. Pricing was fair, and there was always confidence in the work itself: it's clear that Greg brought a tremendous amount of experience to the project, and he consistently ensured that work was done correctly (down to every last detail). I could not ask for a more reliable and honest person to deal with! Additionally, the scope of work changed on our project due to additional requests we had (our decision to re-do walls, install new lights, etc.) yet there was never any worry or concern on unfair pricing. Greg gets five-stars, and we will definitely work together again in the future."
LIVING/DINING/KITCHEN IN PROGRESS
LIVING/DINING/KITCHEN IN PROGRESS
LIVING/DINING/KITCHEN IN PROGRESS
LIVING/DINING/KITCHEN IN PROGRESS
LIVING/DINING/KITCHEN IN PROGRESS

+101

Recommended by96%of homeowners
Avatar for TAS Construction Corporation
TAS Construction Corporation
4.7(
15
)
Addition to Existing Structure - Build

Serving Roslyn, 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, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Hector and Moises were excellent! Hector came with one other of their crew and assembled my permanent gazebo. I have stone pavers and they were very careful in cutting them and digging Deep enough to establish a good anchor. They even installed railings for my back stoop. I would highly recommend them! Clean... affordable and professional."
before demo
kitchen demolition
demolition complete
kitchen tile job in progress
kitchen tile

+172

Response time7 hrs
Recommended by76%of homeowners
Avatar for Homecraft Remodeling Corp.
Homecraft Remodeling Corp.
4.5(
87
)
Addition to Existing Structure - Build

Serving Roslyn, NY and surrounding areas

Approved

In business since 1989

Free estimates

Warranties offered

"From demo to finish 1 week. Very talented crew. Plumbers, electricians, tile and carpenters were excellent. Very very pleased. Feel so lucky we chose Norman, and John to work with."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+43

Response time7 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for All Island Additions and Renovations
All Island Additions and Renovations
5.0(
20
)
Addition to Existing Structure - Build

Serving Roslyn, NY and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"All In One Comfort Solutions has been great to work with. They take their time, approach the issues correctly, and provide great value. I contacted them after feeling uncomfortable with a prior assessment from another company, which turned out to be a great decision. Highly recommended."
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, 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

10 neighbors recently requested a quote
Recommended by100%of homeowners
Memo's Home Renovations, Inc.
4.9(
153
)
Addition to Existing Structure - Build

Serving Roslyn, NY and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Memo and Abby are fantastic. The communication is exceptional in both clarity and attentiveness, and the work quality - from prep to the job itself to clean up - itâ s the tops. I engaged Memo to build/install and paint, finish, and wallpaper a double-sided wall with some mill work and moulding details. For the same room I also engaged him to purchase/hang/install a solid core slab door in an existing doorway. Though not a huge job, as a designer I was really keen to work with someone on the details - and Memo was so easy to do this with and delivered on everything I wanted. I will absolutely be hiring Memo again for more things and bigger jobs."
Response time5 hrs
Recommended by78%of homeowners
Avatar for Powers Performance Construction LLC
Powers Performance Construction LLC
4.3(
27
)
Addition to Existing Structure - Build

Serving Roslyn, NY and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Mr. Powers, at first, was courteous and reliable; the project seemed to have problems, and he was getting frustrated at having to surface the existing deck due to its configuration; he claimed that the measurements and figures were off, while another professional disagreed with his calculations; the project was delayed due to materials being delayed by supplier; Mr. Powers suggested another other remedies for steps and that I purchase an additional type of board for $120, which I did; i paid Mr. Powers in full of the understanding that he would come back and finish off certain areas; during this time, a death occurred and he was unable to come when scheduled; when I texted Mr. Powers, he began belligerent, and cursed at me. I do not find it professional to curse at a client and refuse to take phone calls. I ultimately told Mr. Powers not to come back to my house and to refund the board I purchased that was in his possession. He did so. Since the time of completion, May 2026, numerous boards have come loose. I had someone else correct this issue, and now more boards are coming loose, which I texted him about and showed pictures of on September 9, 2026, and have not heard back from Mr. Powers regarding acknowledgment or addressing the loose boards, as my contract provides for two (2) years."
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 L&A CONSTRUCTION
L&A CONSTRUCTION
5.0(
9
)
Addition to Existing Structure - Build

Serving Roslyn, NY and surrounding areas

Approved

In business since 2011

Free estimates

Offers commercial services

"The work was done very nite and profesional and the contractor was on time with the entire project and the final project turned out beutiful. And i willing to recomenden and hire him again"
Response time1 day
Recommended by100%of homeowners
JMC Services Corporation
5.0(
14
)
Addition to Existing Structure - Build

Serving Roslyn, 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 Roslyn, 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, 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.