Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Smithtown, NY

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Addition to existing structure builders in Smithtown

Avatar for Greg Home Improvement, Inc.
Greg Home Improvement, Inc.
4.7(
86
)

Serving Smithtown, 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 BuildingLI.com - BLI Facilities LLC
BuildingLI.com - BLI Facilities LLC
5.0(
32
)

Serving Smithtown, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I hired Long Island handyman construction group to remodel a 400sf basement and bathroom in Melville. They were priced in the middle compared to other bids. I picked them thanks to their out of the box advice which saved me thousands of dollars. There was one problem with the plumbing which cost an extra 1800 dollars. The owner settled with me 50/50 even though it was a pre-existing issue. The project was started early and completed early. All mess was cleaned up and the crew was very friendly and fully aware. Very reputable guys and very easy to deal with. Thanks Moises and Eddy."
before demo
kitchen demolition
demolition complete
kitchen tile job in progress
kitchen tile

+172

Response time7 hrs
Recommended by76%of homeowners
Avatar for Stars and Stripes Home Improvement LLC
Stars and Stripes Home Improvement LLC
4.8(
313
)

Serving Smithtown, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"After several estimates and meeting with multiple contractors, we decided to move forward with this team and we do not regret it! They were thorough with the estimate, helpful with financing, and offered their recommendations on styles but weren't pushy. This experience was entirely catered to us and we genuinely felt taken care of. The project itself took longer than we expected, but the team did find some structural damage that needed fixing and, of course, any renovation typically takes longer than estimated due to unforeseen circumstances. The guys working on the house were respectful, clean and friendly, and were even great with our two dogs so that I never had to worry about anything. I felt totally comfortable with them being in our home every day. Roberto and Steven were incredible, and if you have a chance to request them, do it! They helped me understand every single thing they were working on and kept in constant communication. Not to mention, the work is clean and super well done! At the end of our project there was a mishap where someone forgot to put an appliance hose back in the drain pipe which caused our basement to get some water, but the guys came right back to the house and cleaned/fixed everything as if it had never happened. All in all, we would definitely use this team again and we are so grateful to have our dream kitchen."
Remodeling - Kitchen & Bathroom Project
VEGA KITCHEN
Painting - Interior Project
Complete Renovation
Basement

+699

Response time3 days
8 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Northgate Home Improvement Corp.
Northgate Home Improvement Corp.
4.9(
93
)

Serving Smithtown, NY and surrounding areas

Approved

In business since 1985

Free estimates

Warranties offered

"I first asked Jeff at Northgate to take out our old basement bathroom and build a new one 4 years ago. He did a great job for a reasonable price. He recently completed a total basement renovation and upstairs bathroom. Everything down to the studs. Again, did a wonderful job in about a month. He really deserves all the excellent reviews he has had. He always keeps you in touch and fixes any problems right away. We will be happy to have him do our kitchen soon. You will not find anyone better."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+56

Response time7 hrs
2 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Homecraft Remodeling Corp.
Homecraft Remodeling Corp.
4.5(
87
)

Serving Smithtown, 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
4 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
4.7(
13
)

Serving Smithtown, 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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

Response time2 days
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for All Island Additions and Renovations
All Island Additions and Renovations
5.0(
20
)

Serving Smithtown, NY and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"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
)

Serving Smithtown, 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

7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Alta Renovations Corp
Alta Renovations Corp
5.0(
26
)

Serving Smithtown, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Warranties offered

"Excellent! Alta Renovations did my bathroom from the studs out. Tile, sheetrock, floor, vanity and the plumbing and towel hardware. The job was was in a co-op, with very frustrating "rules" and "requirements ". Most contractors would not want to participate (paperwork, time schedules and parking restrictions). Jose, the owner of Alta, abided by all the rules, whiles still keeping a smile!!! His workers worked neatly and orderly, knew exactly what had to be done, and did it. Very pleased. I'm recommending him to all my ? ? ? ? ?"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+26

Response time8 hrs
8 neighbors recently requested a quote
Recommended by92%of homeowners
Memo's Home Renovations, Inc.
4.9(
149
)

Serving Smithtown, NY and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Memo was great. They finished the job faster than expected while still maintaining high quality work. They were able to create an additional bedroom from largely wasted space. They were clean in their work leaving no mess behind. I’m very happy with the work and will use the company for future projects."
Response time5 hrs
Recommended by80%of homeowners
...
Showing 1-10 of 614
FAQs for addition to existing structure building service projects in Smithtown, 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 Smithtown, 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.