General Contractor in Mountainside, NJ
Home additions, renovations, and decks in Mountainside without the stress, delays, or surprise costs. You get a licensed local crew that knows these wooded, hilly lots, transparent pricing, and work that finishes on time.
"After getting multiple quotes, I choose Ultimate Contractors Corp. to replace my patio. They came in and designed the area, helped me with color choices, and most important, they finished ON TIME! The construction crew was professional, clean and courteous."
Request your free Mountainside quote
Tell us about your Mountainside home and we'll get back to you the same business day with clear next steps.
A local team that knows Mountainside
Mountainside does not build like anywhere else, a small Union County borough tucked up against the Watchung Reservation. We know it well after years on its wooded, hilly lots, from the streets along the Reservation to the homes off New Providence Road, so we plan each job around the lot and the house it actually lives in.
- Built for wooded, hilly lots
Larger single-family homes here sit on sloped, tree-lined lots, so we plan additions, decks, and patios around grade changes, mature trees, and tight access.
- Permits and inspections handled
We pull the borough permits, work out the foundation, drainage, and footing details up front, and coordinate inspections so you are not chasing paperwork.
- Homes and businesses
Whole-home renovations and additions for families who plan to stay, plus the storefronts and offices along the Route 22 corridor.
Services we offer in Mountainside
Our licensed team for your home, from a single room to a full addition that fits the lot and the house.
Home Additions
Learn more Photo coming soonHome Renovations
Learn more Photo coming soonDeck Construction
Learn more Photo coming soonKitchen Remodeling
Learn more Photo coming soonBathroom Remodeling
Learn more Photo coming soonConcrete & Patios
Learn more Photo coming soonMasonry
Learn more Photo coming soonFlooring
Learn moreWhy Mountainside homeowners choose us
Local to Mountainside
Our licensed crew covers every Mountainside neighborhood, on site fast when you need us.
Licensed, Insured & Bonded
A licensed New Jersey general contractor you can trust on site.
Transparent Pricing
Clear quotes up front, with no surprise charges later.
On-Time Completion
We plan carefully and finish when we say we will.
Mountainside neighborhoods and nearby towns we serve
Mountainside is part of our Union County footprint, and we cover the whole borough plus the towns all around it.
Across Mountainside
The wooded streets along the Watchung Reservation, New Providence Road, and the neighborhoods that fan back from Route 22.
Springfield
Additions and renovations just up Route 22 to the north. See Springfield.
Union
Home and commercial work across the township next door. See Union.
Union County
The wider county Mountainside belongs to, and every town we cover. See Union County.
Not sure if we cover your block? Call (908) 344-2984 and we will confirm coverage for your address.
What our clients say
A 5.0-star rating from 40+ verified Google reviews across the additions, renovations, and outdoor work many Mountainside lots call for.
"Phenomenal job from concept to creation and implementation. Solid and reliable work finishing on time, on target and on budget. Jeff helped me designed my kitchen. I was on the fence originally because my cabinets were not old. But once completed, I'm glad I replaced it. Definitely increased the value of the property."
"Excellent service from start to finish. The team was professional, punctual, and paid close attention to every detail. They answered all my questions, kept me updated throughout the project, and delivered high-quality work. It's hard to find contractors you can truly trust, and this company exceeded my expectations. I highly recommend them for anyone looking for reliable and professional contracting services."
"Jeff and the UCC team have been absolutely great. They are very respectful, responsive and they have very fair prices. To start, the UCC team helped remodel my basement. I had a lot of questions about the style, design, color etc and Jeff had nothing but patience with me. He helped answer every question I had and provided great recommendations. In addition to doing my basement, the team helped hang up tv's in my living room and basement. They also helped replace both my front and back doors and install storm doors. Overall, Jeff and the UCC team are extremely professional, helpful, fair and do a phenomenal job. I strongly recommend them to anyone looking for great contractors."
"I cannot recommend them enought. I am a busy person with a family and I had a severe unexpected plumbing issue with my bathroom. I am not a handyman by any means. I started calling companies and they either stopped replying or wanted my to charge me crazy amounts. I was frustrated. I friend recommended me to this place and I am very thankful. They helped me right away and explained me all I needed to know about the price I was been charge. Specifically that guy tommy. He is a man of a few words. However, was really nice and professional. REALLY RECOMMEND THIS PLACE"
"After having a sudden water leak and having the whole house fall apart, I found the UCC team and Jeff was very professional from the very beginning. He was very attentive to everything that needs to be done and most importantly he understood my urgency and started working right away. Words can't even explain how grateful I am for the amazing work Yico and Patricio did. I am so happy with the UCC team and their work."
"Jefferson and his crew did a fantastic job on my warehouse in Newark NJ. They are very reasonable and very clean. Highly recommend him and his guys for any type of repair work."
"Professionally done work and the customer service is just as good as the work done. Jefferson and his crew are experts in their craft and more importantly he will explain to you everything that will be done in the project, and will work with you every step of the way. He accepted a home renovation project of mine and I was impressed by the work done, even with the weather challenges he and his crew had to overcome. Overall 11/10 rating in quality of work, customer service, pricing, everything. Highly recommend to anyone."
"I had a good experience working with Jeff, Tomy and the UCC team for my bathroom remodeling project. From start to finish, their attention to detail were great. They took the time to understand what I wanted and provided valuable insights to enhance the functionality of the space while sticking to our initial budget. Even thought the project took longer than expected they were able to deliver the project with great quality. We are very happy with the results. I appreciate their customer service and their help. I would highly recommend them."
We serve all of Mountainside
We cover every Mountainside neighborhood and the surrounding area, and we serve clients within about a 45 to 60 minute drive. Give us a call and we will set up a free, no-pressure estimate at your home or business.
Ultimate Contractors Corporation185 Johnson Ave
Newark, NJ 07108
(908) 344-2984
Mountainside questions, answered
Do you serve Mountainside, NJ?
Are you a licensed general contractor in Mountainside?
Do you build additions and decks on the hilly, wooded lots in Mountainside?
Do you handle whole-home renovations on larger Mountainside houses?
How fast can you give me an estimate in Mountainside?
Is the estimate free, and do you offer financing?
Do you pull permits and handle inspections for Mountainside projects?
How long does a typical Mountainside addition or renovation take?
Ready to start your Mountainside project?
Get a free, no-pressure estimate from us. We're a family-owned, licensed New Jersey general contractor - insured, bonded, rated 5.0 stars, with financing available through Wisetack.