Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Port Jefferson, 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 Port Jefferson

Avatar for Tri Build Construction
Tri Build Construction
4.7(
29
)

Serving Port Jefferson, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1987

Free estimates

Warranties offered

"Absolutely, I’d be happy to help you out with that review! Here’s a glowing one for Tri Build Construction and Ray: --- I recently had the pleasure of working with Tri Build Construction, led by Ray, and I can't say enough great things about the experience. From start to finish, the work was absolutely fantastic. Ray and his team were the epitome of professionalism: they arrived on time, communicated clearly, and maintained a clean and organized workspace every single day. Not only was the craftsmanship top-notch, but the attention to detail really stood out. They took the time to ensure everything was done exactly as we envisioned and even went above and beyond to accommodate a few last-minute tweaks we requested. The final result was everything we hoped for and more. In short, if you're looking for a reliable, skilled, and incredibly professional construction team, I highly recommend Tri Build Construction and Ray. They truly deliver a five-star experience! "
Response time1 day
1 neighbors recently requested a quote
Recommended by68%of homeowners
Avatar for BuildingLI.com - BLI Facilities LLC
BuildingLI.com - BLI Facilities LLC
5.0(
25
)

Serving Port Jefferson, 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

+165

Response time7 hrs
Recommended by76%of homeowners
Avatar for A.S.M. Home Improvements
A.S.M. Home Improvements
5.0(
7
)

Serving Port Jefferson, NY and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"I used K&A Home Repairs to rebuild my deck. I found them to be dependable, professional and experienced for what I needed. Anthony came at the appointment time to provide a fair estimate and followed the work schedule as close to the plan as He could, weather permitting. I am extremely pleased with my new deck and will be calling K&A for more projects on my home."
Remodeling
Remodeling
Remodeling
Remodeling
2 of 2
fire pit

+48

Response time11 hrs
5 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Alta Renovations Corp
Alta Renovations Corp
5.0(
25
)

Serving Port Jefferson, 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
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+26

Response time8 hrs
7 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
5.0(
12
)

Serving Port Jefferson, NY and surrounding areas

Approved

In business since 1986

Free estimates

Customers say: Quick response

"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
5 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Cocos Custom Building LLC
Cocos Custom Building LLC
4.8(
8
)

Serving Port Jefferson, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Warranties offered

"From beginning to end the process was flawless Let’s just start by saying not only was communication and follow up excellent, but unlike a number of contractors, Coco s team shows up punctually and on schedule. The work is priced fairly and done with skill and precision. My neighbors inquired about work on their home after seeing this company in operation. All work was explained and progress updates were provided. I’m totally pleased and would not hesitate to recommend them to anyone, and I have, and will continue to recommend them and utilize their craftsmen going forward"
Exterior Remodel
Modular Set And Exterior Finish Project
Exterior Remodel
Modular Set And Exterior Finish Project
Exterior Remodel

+31

Response time12 hrs
12 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Exterior Team Home Services, Inc.
Exterior Team Home Services, Inc.
5.0(
22
)

Serving Port Jefferson, NY and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"This review is for siding but they also installed a new roof and also rebuilt our shed. The team was excellent and very hard working even in hot weather. Ronald is very easy and pleasant to talk to and always answered our questions in a professional manner. Our house looks fantastic! I am so pleased with everything they did. I would gladly recommend their services without hesitation."
Roof in process
Roof done
Roof in process
Job done in Ronkonkoma
Job done

+1

Response time4 hrs
Recommended by95%of homeowners
Avatar for Patzan Home Improvement Inc
Patzan Home Improvement Inc
5.0(
5
)

Serving Port Jefferson, NY and surrounding areas

Approved

In business since 2008

Emergency services offered

Customers say: Quick response

"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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+29

5 neighbors recently requested a quote
Recommended by100%of homeowners
MGT Construction, Corp.
4.3(
15
)

Serving Port Jefferson, NY and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"MGT Construction Corporation was everything I wanted and more. They were prompt. The work was high quality. Steve Kaplan, Mario, Steve, et al were very professional and easy to work with. Steve Kaplan was excellent in following through with everything. The price was excellent. They were very knowledgeable and understood design. After it was finished, Steve followed through on offers to do some additional work as a client courtesy."
Greenport Second Floor Addition
Orient Complete Ground up House
Greenport Complete Ground Up House
Kitchen Remodeling Project
Orient Complete House Build - Bathrooms

+172

Response time1 day
23 neighbors recently requested a quote
Recommended by80%of homeowners
Showing 1-10 of 13
FAQs for addition to existing structure building service projects in Port Jefferson, 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 Port Jefferson, 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.