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

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

Serving Patchogue, 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 Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
4.7(
13
)
Addition to Existing Structure - Build

Serving Patchogue, NY and surrounding areas

Approved

In business since 1986

Free estimates

Customers say: True professional

"Artie & Mike are simply the best. I used them to: 1) Build a LARGE extension to my house and redo my entire kitchen and dining room. The job was completed on time and on budget. Throughout the process Artie was transparent & professional. EVERY person who has stepped into my house has complimented at the detailed perfection. 3) Artie built us a custom walk in pantry 2) Built 2 large decks in the backyard as well as an outdoor shower. This project was completed on time, on budget while exceeding all expectations. If you are looking for a contractor and crew that is responsible, responsive, polite, creative and delivers the HIGHEST LEVEL of quality - Artie is the one."
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+20

Response time2 days
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Alta Renovations Corp
Alta Renovations Corp
5.0(
30
)
Addition to Existing Structure - Build

Serving Patchogue, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Warranties offered

"Jose and his crew did an outstanding job on our extensive interior and exterior renovation, which included a new addition. The project covered everything from a new structural roof with shingles and skylights to new construction windows and doors, siding, a Trex deck, and fully renovated kitchen, bathroom, and laundry room. They also refinished a bedroom and installed beautiful hardwood floors. As with any large project, a few unexpected challenges came up, but Jose handled them with professionalism and kept everything moving forward smoothly. His craftsmanship is excellent, and he’s not only easy to work with but also patient and highly skilled at problem-solving. I wouldn’t hesitate to hire Jose again for future projects and highly recommend him to anyone looking for quality work and a reliable contractor."
Additional Photos
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+26

Response time8 hrs
22 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for A.S.M. Home Improvements
A.S.M. Home Improvements
5.0(
12
)
Addition to Existing Structure - Build

Serving Patchogue, NY and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"We cannot say enough about ASM Home Improvement. The owner Anthony was absolutely amazing every step of the way. First he put our mind at ease to what we wanted was not only possible but was going to be great and great it was ! Him and his crew were professional and sincerely cared about the job. The workmanship was top notch. Anthony’s talent to make our deck beautiful truly showed and we absolutely love it ! We will hire Anthony and his crew again for our next project and highly recommend him and his company. He will make your vision a reality!"
Remodeling
Remodeling
Remodeling
Remodeling
2 of 2
fire pit

+48

Response time11 hrs
9 neighbors recently requested a quote
Recommended by58%of homeowners
Avatar for Patzan Home Improvement Inc
Patzan Home Improvement Inc
5.0(
6
)
Addition to Existing Structure - Build

Serving Patchogue, NY and surrounding areas

Approved

In business since 2008

Emergency services offered

Customers say: True professional

"We are very happy and satisfied with the projects completed by Patzan at our home. Mr. Patzan is very professional, knowledgeable and pays great attention to detail to deliver a good durable, functional and great look looking finish at a decent price. Mr. Patzan Communication is excellent and he answers all my questions. We did two projects with Patzan and we are planning my our next one with Patzan. I really recommend this company."
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+29

5 neighbors recently requested a quote
Recommended by83%of homeowners
JKL Construction, Inc.
4.2(
21
)
Addition to Existing Structure - Build

Serving Patchogue, NY and surrounding areas

Approved

In business since 2010

Free estimates

Customers say: Quick response

"Kenneth was amazing to say the least! From the moment we first sat down with him for an estimate, he was professional, polite, & extremely knowledgeable, all the way until the completion of the job. We explained to him that we wanted to update our old kitchen & he offered great suggestions of how we could improve & better maximize our space such as taking down the wall separating the kitchen from living room to create an open concept & allow better air flow through the house, move the back door from the right side to the left to get the best use of the longer wall & allowing for more counter space, & suggesting putting in a toe-kick heater to warm the floor when I expressed how my feet are freezing during the winter. He returned w/ a computer model of what our new kitchen would look like & checked in w/us throughout the build. We were so impressed w/our new kitchen/living room that we also hired him to build our deck & remodel the front of our house so check out those pics too! ???"
Response time9 hrs
Response rate89%
15 neighbors recently requested a quote
Avatar for Adelbin Construction LLC
Adelbin Construction LLC
5.0(
3
)
Addition to Existing Structure - Build

Serving Patchogue, NY and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"I hired Adelbin Construction for an extension on my home to create and add extra space in my family home. They did a fantastic job, on schedule and was able to come in under budget. They took care of everything from sourcing materials that I had requested to taking care of all permits with the town. 10/10 service. I will most definitely be using Adelbin in the future."
Fire Restoration
Fire Restoration
Fire Restoration
Fire Restoration
Fire Restoration

+17

Response time7 hrs
Response rate100%
8 neighbors recently requested a quote
Avatar for Webb Builders
Webb Builders
5.0(
5
)
Addition to Existing Structure - Build

Serving Patchogue, NY and surrounding areas

Approved

In business since 2000

Free estimates

Small jobs welcome

"If I had to start all over again, I can honestly say, I wouldnâ t change a thing. My decision to use Webb Builders, Inc. and Webbstar Networking & Technology Solutions has been an absolute pleasure! I have known and worked with Dean for over 25 years. Dean Webb built an addition to my home and it came together so perfectly that you would never know the original from the addition, except that the addition was built much better than the original. Any follow up work with Dean Webb and his outstanding crew has been attended to with ease and quick responses. The attention to detail and time spent on every project was not only an enjoyable experience but well thought out for the very best result. I have had numerous Internet and WiFi issues in the house and Dean not only redesigned a new WiFi plan, which gave us better connectivity but also covered the outdoor space which was a great bonus during the summer months. I could go on and on but in closing, my needs were all met beyond expectation and any post maintenance has been completed with ease. Dean is an extraordinary individual and anyone who has the pleasure of working with him should expect to be extremely happy with the outcome of their project!"
Parish Hall
Twin Towers
AV Rack
Network equipment
Surveillance System

+50

Response time8 hrs
Response rate97%
24 neighbors recently requested a quote
Avatar for Premier Home Remodeling & Design
Premier Home Remodeling & Design
3.9(
25
)
Addition to Existing Structure - Build

Serving Patchogue, NY and surrounding areas

Approved

In business since 2019

Free estimates

Small jobs welcome

"Premier Home Remodeling is a father and son team of two affable gentlemen. They have a nice showroom with a lot of good design choices and are patient and helpful when you try to select products for your project. They use quality materials. The crew that does the work is highly skilled and easy to work with. They are careful to minimize disruptions and do a good job of cleaning up at the end of each workday. They sincerely want you to be pleased, so are flexible about changes or ideas you may want to incorporate. My finished kitchen is one I am very proud to show my friends."
custom niche
vanity and tops
vanity and tops
cabinets
mirror

+53

Response time2 days
Response rate87%
10 neighbors recently requested a quote
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FAQs for addition to existing structure building service projects in Patchogue, 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 Patchogue, 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.