Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in New Brunswick, NJ

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.

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

Avatar for NB Woodworks, LLC
NB Woodworks, LLC
5.0(
26
)
Addition to Existing Structure - Build

Serving New Brunswick, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1875

Free estimates

Warranties offered

"Anthony Nastasi of NB Woodworks, LLc, has our highest recommendation. He has worked with us over the past year on a variety of projects aimed at refurbishing and improving our home. This has included exterior trim replacement, replacing a box window with a French door and side light unit, and replacing a large unusually sized window. He also built a beautiful mahogony deck. Indoors, he installed a french door which included fine trim work. In addition, he hired excellent subcontractors to powerwash and paint our home and build a patio, porch and walks. We highly recommend Anthony's carpentry skill, as well as his problem solving, planning and coordination skills. He is also a dependable, honest person of fine character."
.
.
.
.
Our Work

+34

Response time1 day
6 neighbors recently requested a quote
Recommended by57%of homeowners
Avatar for AVSTEP LLC
AVSTEP LLC
5.0(
13
)
Addition to Existing Structure - Build

Serving New Brunswick, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Warranties offered

"AVSTEP was great to work with, the team started earlier than expected and completely fixed my foundation, not only with replacement block and cement, but added two different types of waterproofing as well. When additional wood rot was found on top of the foundation, they were able to repair that as well without adding more time to the project. The heavy brick and mortar waste from the building was promptly removed like it was never there. Would recommend AVSTEP for future building needs."
Roofing Project
Remodeling - General Project
before
Before
Remodeling - Kitchen & Bathroom Project

+27

Response time1 day
Response rate100%
3 neighbors recently requested a quote
Avatar for CSZ Construction
CSZ Construction
4.6(
69
)
Addition to Existing Structure - Build

Serving New Brunswick, NJ and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"My parents and I live in a old brick apartment building in Hoboken that is from the 1880s. The bathroom in our apartment had not been updated since the 1940s. We needed help ASAP. We checked out Cesar s page and wanted to hire him immediately. The reviews speak for themselves. When he came into our apartment to give us a quote we knew that this was contractor we needed to get the job done. Cesar is affordable, friendly, and very accommodating to any issues or concerns you have before starting the project. Two massive issues with our project were that my dad has spinal & walking issues, so we needed the floors clear of all tools and materials at the end of the each day so that father could walk efficiently through the apartment. The other big issue was that we only have 1 bathroom, so Cesar agreed to work with us on pulling the toilet off and on as every day finished so that we did not have to leave our building to use the toilet. Him and his crew are the best and take pride in their work so that owner is happy with the final result. We brought the bathroom down to the bare bones and rebuilt it back up. I worked with him every step of the way to make sure that he needed all materials to get the job done in the time we needed. This project was an intense remodel with some of the hardest demo and substrate materials that an old bathroom can have. He didn t think anything of it. He has veteran experience in the field and this remodel only took 3 weeks. We are very impressed with Cesar s craftsmanship and professionalism and we will be hiring him again for any future interior projects."
 ALL COLUMNS FINISH
OLD DECK
Livinroom
 PAINTING
PREPARING FOOTINGS

+168

Recommended by93%of homeowners
Avatar for A Hubert Construction
A Hubert Construction
4.5(
104
)
Addition to Existing Structure - Build

Serving New Brunswick, NJ and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"Hubert Construction performed large scale construction/ additions to my home in 2022 and 2024. I had a large addition done in 1998, which I only wish could have been Hubert Construction. It left much to be desired. I watched Hubert work on another house nearby and was impressed. The 2 jobs that they did for me, were absolutely impeccable. Every part of the construction was done exactly as I hoped for, from design, to quality of work, to finished product. That’s why I didn’t hesitate to hire him a second time. In addition, Arthur’s employees are conscientious, sweet, and friendly. They, as well as Arthur, are a pleasure to work with. In summary, you cannot go wrong hiring Hubert Construction. That’s a rarity in the Home Rehab."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+37

Response time3 days
Response rate100%
2 neighbors recently requested a quote
Avatar for Prestige Design & Build Corp.
Prestige Design & Build Corp.
5.0(
40
)
Addition to Existing Structure - Build

Serving New Brunswick, NJ and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Matt and the entire team of professionals at Prestige Design & Build were prompt, courteous, meticulous and hard working. My family and I are 100% pleased with the beautiful job they completed in our home and I definitely look forward to planning additional renovations with them in the near future. Much appreciation to Matt for his personable communication."
Demarest multiple room remodel
completion of renovation
Addition project progress
Rear addition project
Master bedroom suite

+542

Response time6 hrs
Recommended by66%of homeowners
All-Star Contractors of Hunterdon County, LLC
4.7(
39
)
Addition to Existing Structure - Build

Serving New Brunswick, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1970

Free estimates

Emergency services offered

"We had an excellent experience working with Bill and most of his crew on our home addition project. AllStar stood behind the quality of workmanship, which met our expectations. The crew was courteous, respectful of our home and most dependable. The Addition blends seamlessly with our existing structure and we couldn’t be happier with the final result. We highly recommend AllStar to anyone looking for high quality and very reasonable home renovations project."
Response time3 days
Response rate100%
2 neighbors recently requested a quote
Avatar for Wise Choice Construction LLC
Wise Choice Construction LLC
4.8(
46
)
Addition to Existing Structure - Build

Serving New Brunswick, NJ and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"I can?t recommend this team enough! They completely transformed my kitchen, and the entire experience exceeded my expectations from start to finish. Our kitchen remodel was about $30,000, and they completed everything in just 3 weeks without sacrificing quality. They were punctual, professional, and kept me informed throughout the entire process. The workmanship is outstanding, the cabinets, countertops, backsplash, lighting, flooring, and every finishing detail came together beautifully. What impressed me the most was their attention to detail and commitment to getting everything right. They kept the work area clean, stayed on schedule, and were always available to answer questions or make adjustments when needed. It?s rare to find a contractor who delivers exactly what they promise, but they did just that."
Deck remodel
Deck remodel
Deck remodel
Deck remodel
Deck remodel

+2

8 neighbors recently requested a quote
Recommended by56%of homeowners
Avatar for Inson Dubois Wood LLC
Inson Dubois Wood LLC
5.0(
17
)
Addition to Existing Structure - Build

Serving New Brunswick, NJ and surrounding areas

Approved

In business since 2005

Customers say: True professional

"We live in a prewar coop building in Manhattan and were in need of a kitchen, living and dining room/den renovation. Because of the limitations in our building, we were not optimistic that many changes could be made that would dramatically alter the feel/function of the space. Inson Wood proved us completely wrong. With his architectural eye and his impeccable design aesthetic we (and everyone who has been here before and after) experiences our apartment as an entirely different living space. Even family members are shocked at the transformation. I think that what Inson accomplished was the product of a few significant factors. First, Inson asks you what you want and seriously considers how you live. If Inson thinks that different approaches should be considered for what you want, he provides renderings of each option so that you can easily visualize and imagine them. Ultimately, Inson respects your preferences and works with them, elevating them to a level far above what you had imagined. Inson uses the highest quality vendors (whom we NEVER would have found) and expertly guides you through choices (note: follow his recommendations!!!)- our walls would never have had dimension and our kitchen backsplash never have been so unique (two examples) if not for the artisans that Inson uses. Inson is also willing to have you be as much or as little involved in the process as you want to be. I did go with Inson to choose many pieces of furniture but realized after a certain point that his taste point made me confident in him choosing much finishing work (ex: window treatments, decorative cushions, which I love) without me. As with all design work, there are always glitches and Inson was extremely responsive and responsible for taking care of those as they came up. We are nothing less than thrilled to come home each evening and enjoy our space, which feels like a luxurious retreat perfectly tailored to us."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+11

Recommended by100%of homeowners
Avatar for A.W. Martin, Inc
A.W. Martin, Inc
4.0(
72
)
Addition to Existing Structure - Build

Serving New Brunswick, NJ and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

"My dream kitchen came to life thanks to Tony Martin and his phenomenal crew. The individual contractors were talented, pleasant, always neat and respectful. They were all highly skilled craftsman and artisans. The quality workmanship and professionalism of their work is apparent in every detail. The final result is absolutely gorgeous and I could not be more thrilled with my new kitchen!"
Seahorse Shower
Tile artwork
Shower pan
Jacuzzi tub
Natural stone wall

+39

Response time4 days
Response rate100%
7 neighbors recently requested a quote
Avatar for MF Builders, LLC
MF Builders, LLC
4.9(
9
)
Addition to Existing Structure - Build

Serving New Brunswick, NJ and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"I cannot express enough how thrilled I am with the exceptional work done by MF Builders on our recent home addition project. From start to finish, the experience was nothing short of outstanding. The professionalism exhibited by MF Builders and their team was unparalleled. They were punctual, courteous, and truly listened to our needs and desires for the project. Their communication throughout the entire process was clear, prompt, and transparent, leaving us feeling confident and well-informed every step of the way. The quality of craftsmanship delivered by MF Builders was simply impeccable. Every detail of the home addition, from the structural integrity to the finishing touches, was executed with precision and care. It's evident that they take great pride in their work, and it absolutely shows in the final result. If you're in search of a contractor who delivers nothing but the best, look no further than MF Builders."
Interior living room
Kitchen
Interior
Interior
Kitchen

+174

Response time8 hrs
Response rate98%
5 neighbors recently requested a quote
...
Showing 1-10 of 666
FAQs for addition to existing structure building service projects in New Brunswick, NJ

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 New Brunswick, NJ 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.