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

Avatar for BuildingLI.com - BLI Facilities LLC
BuildingLI.com - BLI Facilities LLC
5.0(
32
)
Addition to Existing Structure - Build

Serving Flushing, 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
CNM Construction
4.8(
160
)
Addition to Existing Structure - Build

Serving Flushing, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Warranties offered

"My wife and I are very pleased with the work done by Matteo, Jose, Vicente and Juan. Matteo presented us with reasonable estimates for the two jobs we wanted done. One bathroom was gutted and renovated. It looks absolutely wonderful now. My wife and I provided the materials, but Matt was helpful in making suggestions. Jose added a control panel that now allows us to control water flow to the other bathroom and kitchen without having to turn off the water for the building. The master bedroom/studio was painted and looks great.. Among other things, they fixed a slanted doorway and replaced a door. We'd highly recommend them."
Additional Photos
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+87

Response time2 days
Response rate100%
9 neighbors recently requested a quote
Avatar for Inson Dubois Wood LLC
Inson Dubois Wood LLC
5.0(
17
)
Addition to Existing Structure - Build

Serving Flushing, NY and surrounding areas

Approved

In business since 2005

Customers say: True professional

"It went very well. Inson always focused on the highest quality products that would fit the design. Also tried to get each item at the better price. Additionally he was meticulous with the project and **** ** the vendors to make no mistakes and focus on a quality outcome. Finally Inson and his team were diligent to make sure everything was constructed in the right manner. In our case the proper wiring and safest plumbing. Always relied on master builders and plumbers who new what they were doing. The final outcome was above expectations. I would keep in mind any project like ours will cost money - we spent extra with Inson but in the end it was the right thing to do and well worth it."
Additional Photos
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+11

Recommended by100%of homeowners
Avatar for TKT REMODELING GROUP LLC
TKT REMODELING GROUP LLC
4.6(
11
)
Addition to Existing Structure - Build

Serving Flushing, NY and surrounding areas

Approved

Free estimates

Warranties offered

Credit card accepted

"TKT Remodeling Group LLC is professional, fast & responsive, and very skilled in their work. They did an incredible job replacing our asbestos tiles in the boiler room, leveling out the floor, and adding tiles. They also installed an excellent fire proof door for the room, and fixed our dryer vent so that it was up to code. Additionally, they installed 4 mini splits in the house. They were very diligent in their work and quality control. After the installation they tested all the units and found out one was malfunctioning. They immediately called the supplier to help us get a new replacement unit, advocating on our behalf and pushing back against the supplier's suggestion of simply replacing a part in the malfunctioning unit, and had it replaced in one day. They go above and beyond in all aspects of their work and are very pleasant to work with. We are incredibly satisfied with their fast, and efficient work and highly recommend their services. We'll definitely be using them in the future for any home projects!"
Kitchen  Remodeling Project
Heating & A/C Project
General Remodeling Project
Kitchen  Remodeling Project
Heating & A/C Project

+23

Response time2 days
7 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Kalnitech Construction Corp.
Kalnitech Construction Corp.
4.7(
14
)
Addition to Existing Structure - Build

Serving Flushing, NY and surrounding areas

Approved

In business since 2017

Free estimates

Small jobs welcome

"I recently hired Kalnitech for a major renovation project at my house, and I couldn?t be more pleased with the results. From start to finish, their team demonstrated professionalism, attention to detail, and a genuine commitment to quality. They communicated clearly throughout the process, kept the project on schedule, and delivered exceptional workmanship. Every aspect of the renovation from the structural work to the finishing touches was completed with care and precision. The house came out perfect, even better than I had envisioned. I highly recommend Kalnitech to anyone looking for a reliable, skilled and trustworthy construction team. Thank you for turning my vision into reality!"
Kitchen Renovation
Kitchen
Front of house exterior
Before
New Kitchen

+27

Response time1 day
Recommended by58%of homeowners
Avatar for Tanem Construction Inc
Tanem Construction Inc
5.0(
6
)
Addition to Existing Structure - Build

Serving Flushing, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1983

Free estimates

Customers say: True professional

"Hired Tanem to work on our kitchen remodel, they were A++! ...Fair price, great communication throughout the entire process. They answered all my questions and concerns in detail. Plus, importantly, the kitchen looks & operates way better now!"
5 neighbors recently requested a quote
Recommended by60%of homeowners
Avatar for Golden Mega Group LLC
Golden Mega Group LLC
5.0(
7
)
Addition to Existing Structure - Build

Serving Flushing, NY and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"We?re very happy with the work Golden Mega Group did on our siding and deck! The team did a great job, everything turned out beautiful and the whole experience was smooth. We really appreciate their work and would definitely recommend them to anyone looking to upgrade their home!"
General Contractor
General Contractor
Rooftop Deck, Midtown Manhattan
Co-op full apartment renovation/ Sold in 2 weeks after listed!
Jamaica- Full Remodel of the living room and kitchen

+7

7 neighbors recently requested a quote
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FAQs for addition to existing structure building service projects in Flushing, 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 Flushing, 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.