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TRUSTED BY RANDOLPH, NJ HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon1.5k+
    Verified subcontracting services reviews

Top-Rated Subcontractors in Randolph - Updated Nov 2026

Avatar for Joseph & Sons Construction, LLC
Joseph & Sons Construction, LLC
4.9(
168
)
Major Home Repairs (General Contractor)

Serving Randolph, NJ and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"We recently hired Joseph & Sons Construction for two separate projects. The first project was the installation of handrails on our front and rear steps. The second project was the building of a cement base for our outdoor shed to be moved. The work was completed in a very professional and expeditious manner. The entire crew should be complimented on a job well done. I would not hesitate to utilize Joseph & Sons Construction for any future home improvement project. Thank you Joseph & Sons."
custom luxury home
custom luxury home
remodeled spacious basement
Renovated backyard
renovated walkway and driveway

+1

Response time1 day
1 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for JM Contracting Group, LLC
JM Contracting Group, LLC
4.7(
85
)
Major Home Repairs (General Contractor)

Serving Randolph, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Customers say: Quality work

"John and his crew did a wonderful job! I highly recommend them. They were very efficient and timely. John was always accessible and took the time to understand my needs and price range."
West Windsor NJ
First Floor MakeOver
Springfield Makeover
Master Bedroom
Living Rm

+55

Response time5 hrs
1 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for CSZ Construction
CSZ Construction
4.6(
69
)
Major Home Repairs (General Contractor)

Serving Randolph, NJ and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"I hired Cesar and his crew to gut and renovate multiple bedrooms a kitchen and 2 bathrooms. Cesar, Armondo and Benjamin were an absolute pleasure to work with. Their knowledge, expertise and craftmanship are top notch. Cesar is easy to work with and truly cares about making sure his customers are happy. Cesar has an uncanny knack for finding a solution to any problem he encounters. I found his pricing to be very fair and reasonable and I quickly learned I could trust Cesar. If you are looking to remodel, finish off a room or repair any part of your interior, Cesar and his team should be your first call."
 ALL COLUMNS FINISH
OLD DECK
Livinroom
 PAINTING
PREPARING FOOTINGS

+168

Recommended by93%of homeowners
Avatar for The TJB Legacy Group, LLC
The TJB Legacy Group, LLC
4.9(
39
)
Major Home Repairs (General Contractor)

Serving Randolph, NJ and surrounding areas

Approved

In business since 2005

Free estimates

Credit card accepted

"The Legacy Group was the most professional team Iâ ve worked with in north jersey. From day one they respond to questions and or concerns. They finished on time and under budget. Many of their suggestions ended up saving me money and made the remodel look better. Given the demand for contractors due Covid and Ida I was expecting a nightmare and my experience was opposite so thank you Legacy!"
Before
After
After
Kitchen Before
After Kitchen

+24

Response time1 day
Response rate97%
4 neighbors recently requested a quote
Avatar for Allure Properties and Maintenance
Allure Properties and Maintenance
4.7(
11
)
Major Home Repairs (General Contractor)

Serving Randolph, NJ and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"The project expanded as we added a deck, central air and painted the entire first floor. John and his guys took it all in stride and just kept plugging away. John is very professional, trustworthy and talented. As an engineer with over 40 yrs of experience I know quality when I encounter it. Canâ t say enough about this entire crew. All good guys. Kept the area very clean during all the mayhem. I would recommend them without pause"
Bathroon Renovations
Bathroon Renovations
Bathroon Renovations
Bathroon Renovations
Bathroon Renovations

+44

Response time1 day
6 neighbors recently requested a quote
Recommended by88%of homeowners
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Subcontractors FAQs, answered by experts

Professionals optimize layouts, improve energy efficiency, and ensure structural safety and compliance.

While it’s never too early to start planning for a major home improvement project like a home addition, give yourself at least a month or two to plan and design your addition, find a contractor, and get the permits in order. For larger projects like a second-story addition that require designing with an architect, plan on three to four months of preparation.

Custom homes can take an average of 18 months to build, mainly due to the lengthy design process, and most projects take somewhere between 12 and 24 months. When you work with the right custom home builders near you, they can help you map the road ahead and understand what can speed up or delay the timeline. Choosing locally available materials, for example, can speed things up without losing that customized touch.

While possible for small projects, professional designers ensure compliance with building codes and structural integrity.

Yes, custom designs match existing structural and aesthetic themes.

The Randolph, NJ homeowners’ guide to subcontracting services

From average costs to expert advice, get all the answers you need to get your job done.