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

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

Serving Keyport, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1875

Free estimates

Warranties offered

"Prayer answered! Our church was ghosted by our original contractor prior to his building a disability ramp for our rental building that he had contracted with us. Thankfully, Angi’s List connected us with NB Woodworks, LLC. Anthony responded quickly to our need. Listening to concerns of both landlord and tenant, he provided helpful logistical suggestions. He managed efficiently all aspects of the project, deciphering difficult to read architectural drawings and working with the city on our behalf to expedite permits and inspections. He kept regular communication with us regarding the project’s progress, issues, and city requirements. Anthony braved freezing weather to finish the ramp for us in a timely fashion, and we are most grateful to him, Thanks to NB Woodworks, our rental now has ADA safe access and our tenant has full use of the building space. If you seek a reliable, expert and efficient experience, definitely consider NB Woodworks for your next project,"
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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 Keyport, 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 JSD Properties, LLC
JSD Properties, LLC
4.9(
53
)
Addition to Existing Structure - Build

Serving Keyport, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Warranties offered

"Had a big addition done, kitchen expansion and master suite. Like most projects there were some curveballs but Jeff and crew did a nice job navigating through. His crew and specialists were polite, friendly, cleaned up nicely, and did quality work efficiently. Jeff did everything we asked for, and it also helps he's a chill and clearly descent guy. Would definitely recommend JSD to anyone with this kind of size project, JSD price is competitive to the averages we got from other contractors (not the cheapest, but you get what you pay for)."
Additional Photos
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+19

Response time1 day
Response rate100%
14 neighbors recently requested a quote
Avatar for Design For Living Contracting LLC
Design For Living Contracting LLC
4.9(
36
)
Addition to Existing Structure - Build

Serving Keyport, NJ and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Design for Living is amazing. On time, professional, neat and their attention to detail was over the top. Very easy to work with, and we absolutely love our bathroom."
Additional Photos
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Additional Photos

+67

Response time1 day
2 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for SCS Construction
SCS Construction
4.6(
21
)
Addition to Existing Structure - Build

Serving Keyport, NJ and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"Scott and his team did a terrific job. My deck looks infinitely better than it did and it is more structurally sound now than before. He replaced all the decking on the first floor deck, adding a new addition to the deck and completely renovated a screened-in porch. They removed a floating deck on the upstairs deck and resurfaced the underlying fiberglass deck adding new railings. Scott was present throughout the job with his team (3 people). With this job there were little changes that I wanted made and Scott and the team were extremely accommodating and receptive. They did solid work, were very professional and always left the worksite very clean every day. I highly recommend SCS Construction and would definitely use them again in the future."
Additional Photos
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+53

Response rate100%
3 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Powers Performance Construction LLC
Powers Performance Construction LLC
4.3(
27
)
Addition to Existing Structure - Build

Serving Keyport, NJ and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"They did an excellent job in our bathroom. Reasonable, professional and quality of work was amazing. I highly recommend this company. I would hire them again. Kept us informed along the way to ensure we got exactly what we wanted. Started job in time and finished in time. Amazing company and very pleasant to work with."
Decks and Porches Project
Remodeling - General Project
General Remodeling Project
Finished Carpentry and Woodworking Project
Gazebo

+53

Response time2 days
Response rate100%
4 neighbors recently requested a quote
Avatar for Eagle Home Services Inc
Eagle Home Services Inc
4.7(
40
)
Addition to Existing Structure - Build

Serving Keyport, NJ and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"Sal amazed us. Hiring contractors is funny business. If you have an older home, you have probably had mixed experiences. Certainly everyone has heard, or experienced, a horror story. We've wanted to finish our attic and make an office for quite a while, and had a few false starts. I went to Angi's, quite honestly, out of desperation. Entered a description of work needed - didn't need to join - GREAT INTERFACE ANJI! Sal called me shortly after I posted, came over quickly, was great and understood our needs, so we hired him. Here's where the amazing things started happening. Sal shows up, on time and with the nicest crew. We can immediately tell we are in good hands. I talk to my wife, and we agree to ask Sal about several other issues around the house; rotting deck stairs, mold damage in the foyer from old leak, small plumbing headaches. Sal takes a look, says no problem, and gives us a good number. Now we not only have the attic space of my wife's dreams, but we can go into the holiday with ALL work done (understand we met Sal around Thanksgiving, and he did a lot of work.) Thanks Sal and the guys, you were delightful to have in our home. ps. I've always felt a good boss is somebody who is willing to work harder than his employees. Sal is a good boss. Hire Sal!"
Additional Photos
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+64

Response time11 hrs
3 neighbors recently requested a quote
Recommended by76%of homeowners
Sanders Contractors, LLC
3.9(
42
)
Addition to Existing Structure - Build

Serving Keyport, NJ and surrounding areas

Approved

In business since 2006

Free estimates

Small jobs welcome

"I hired Horatio for a total renovation of a condo unit. He met me a the unit the day i contacted him ,and provided a quotation which never increased or changed. Project consisted of bathroom & kitchen renovation (new shower, vanity, kitchen cabinets, etc.), hardwood floors, popcorn ceiling removal, patching and painting. Horatio and his skilled team were exceptional. Very professional, and overall did a great job. Horatio takes great pride in his work and will make suggestions that the average homeowner wouldn't think of, even if it means more work for his team. Quality is certainly his priority, they don't cut corners. Also was great that he provided feedback on the way I wanted certain things to be done. The end result is excellent. I look forward to hiring Horatio and his team again in the future."
some kitchen works
some kitchen works
some kitchen works
some kitchen works
some kitchen works

+93

Response time2 days
Recommended by90%of homeowners
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FAQs for addition to existing structure building service projects in Keyport, 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 Keyport, 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.