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Find Basement remodelers in Randolph

Avatar for Joseph & Sons Construction, LLC
Joseph & Sons Construction, LLC
4.9(
163
)

Serving Randolph, NJ and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"Joseph and Sons had done our waterproofing in our finish basement. What I liked about this company was, they were the only company to do waterproofing and finish our basement with Sheetrock, trim, trim and floors. A one stop company that does all. Always delt with Angelo and he was very knowledgeable. Will be using them for future jobs."
custom luxury home
custom luxury home
remodeled spacious basement
Renovated backyard
renovated walkway and driveway

+1

Response time1 day
Recommended by92%of homeowners
Avatar for Owens Corning Basement Finishing System
Owens Corning Basement Finishing System
4.5(
745
)

Serving Randolph, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1990

Free estimates

Warranties offered

"We love our basement remodel. Peter, Alex and his team were here when they said theyâ d be here, completed the job as described, and kept us updated along the way. The basement now looks and feels clean and bright. The additional space doesnâ t feel like a basement at all and is enjoyed by the whole family. We highly recommend Lux Renovations."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+40

Response time1 day
Response rate98%
249 neighbors recently requested a quote
Avatar for Bonus Home Remodeling
Bonus Home Remodeling
5.0(
29
)

Serving Randolph, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Credit card accepted

"We recently hired Bonus Home Remodeling to remodel our unfinished basement. Rob and his team were outstanding to work with from the onset of the project. They worked with us to make final design decisions, and throughout the entire project they had a large white board set up in the basement outlining a timeline of the projects so we always knew what was coming up next. They arrived at the same time everyday and left at the same time everyday which made it easy to live through such a big project taking place in your home. Rob and his team made everything convenient and easy for us. Any issues or questions that came up were addressed immediately and always ensured that we were happy before moving forward. The finished project is exactly what we were hoping for! It is gorgeous and the quality of the work is excellent."
Stairs
Basement
Basement
Bathroom Remodel
Bathroom Remodel

+11

Response time1 day
Response rate96%
8 neighbors recently requested a quote
The Better Basement Company
4.3(
31
)

Serving Randolph, NJ and surrounding areas

Approved

In business since 2003

Free estimates

Warranties offered

"During the initial quote process Tom was very knowledgeable and put together a great plan for basement remodeling. My basement was transformed from the style of 50's to a modern basement that I can enjoy with my family. The staff was friendly and worked diligently 6 days a week without interrupting to my day. I received updates through the project from Tom on the progress. The company provided completive rates and this was the best money spent. I would highly recommend this company to anyone looking for quality work, your will not be disappointed."
 Before
 ICE CREAM BAR
 CREATIVE IDEAS
 CREATIVE OFFICE SPACE
 After

+13

Response time2 days
Response rate86%
3 neighbors recently requested a quote
Avatar for CSZ Construction
CSZ Construction
4.6(
69
)

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 American Home Remodeling Inc
American Home Remodeling Inc
4.4(
651
)

Serving Randolph, NJ and surrounding areas

Approved (Corporate)

In business since 1994

Free estimates

Warranties offered

"American Home Remodeling was absolutely stupendous to work with. I reside in Irvington and needed vinyl siding and 3 windows replaced to my home. Victor, Kelvin and their team of workers were efficient, service-oriented, and professional from the pre-planning stages- through the completion of the project. I highly recommend their services. Their work was clean, and gave my home a tremendous, refreshed look. A BIG thank you to Vic, Kelvin and the American Home Remodeling team. You guys are ROCKSTARS!!!!!"
Driveways - Asphalt Project
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+29

16 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for The TJB Legacy Group, LLC
The TJB Legacy Group, LLC
4.9(
39
)

Serving Randolph, NJ and surrounding areas

Approved

In business since 2005

Free estimates

Credit card accepted

"Was very helpful to the process of the job and they had attention to the quality of their work. I will highly recommend them to anyone to do a bathroom or kitchen remodel."
Before
After
After
Kitchen Before
After Kitchen

+24

Response time1 day
Response rate97%
2 neighbors recently requested a quote
Avatar for JM Contracting Group, LLC
JM Contracting Group, LLC
4.7(
84
)

Serving Randolph, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Customers say: Quality work

"We recently completed a major multi room renovation which included a new kitchen and den renovation requiring an expansion of our foundation along with removal of exterior and interior walls. Additionally the reno included a new back deck and front portico. We could not be happier with John and the job that he did. What impressed us most with John was his reliability. Over the course of this 4+ month project, John was at our house first thing each and every weekday morning, and had his team there as well. They were professional, courteous and kept the house clean and functional enough that our whole family was able to live in the house while the renovations were taking place. John initially quoted us that the project would take 4 months and they remarkably stuck to that schedule. The end result has been everything that we wanted. The pictures speak for themselves, but the craftsmanship and attention to detail they put into the project were exceptional. John was forthcoming with suggestions or advice, and very transparent when any changes or surprises popped up. He was truly a partner in the effort and we would strongly recommend him for any projects that you may have. Sincerely, Ann & Steve Marcus"
West Windsor NJ
First Floor MakeOver
Springfield Makeover
Master Bedroom
Living Rm

+55

Response time5 hrs
Recommended by85%of homeowners
Avatar for Garden State Home Remodeling
Garden State Home Remodeling
4.8(
28
)

Serving Randolph, NJ and surrounding areas

Approved

In business since 1999

Free estimates

Warranties offered

"Hired this company after interviewing two other companies to remodel my kitchen. My husband and I were saving for quite some years to have this project done so we wanted the best contractor that we trusted to do the work. They came in to our home (on time with the appointment) and explained every detail about the job step by step. We really appreciated this and we didn’t feel rushed or pressured. John the sales rep was willing to spend as much time needed to answer our questions. We did not get the same sense of patience from other contractors. Although not the cheapest or most expensive we are happy we selected Garden State Home Remodeling for our extensive kitchen rehab. Thank you Garden State Remodeling Group for a job well done."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

Response time3 days
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Built To Last Home Improvements, LLC
Built To Last Home Improvements, LLC
4.8(
25
)

Serving Randolph, NJ and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

Outdoor Shower Right Angle
Outdoor Shower Left
Design  Render
Outdoor Shower
Cabin Flooring

+4

Response time10 hrs
Response rate89%
1 neighbors recently requested a quote
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FAQs for basement remodeling projects in Randolph, NJ

Finishing a basement turns unused square footage into livable space and returns up to 70% of what you spend when you sell your home. Beyond that resale boost, you gain a playroom, home office, or guest suite you can start enjoying right away. That mix of daily comfort and solid return on investment (ROI) makes basement finishing one of the smartest upgrades you can tackle.

In some parts of the country—especially lots on swamps, high water tables, or other wetlands—local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle. 

If your property sits on waterlogged ground, building on a slab or crawl space is often safer, more affordable, and code-compliant.

Most basements wrap up in four to eight weeks. Framing takes three to five days, with electrical and plumbing rough-ins following over the next week. Add five days for drywall, two to three for flooring, and another week for paint, trim, and punch-list items. 

Delays can happen if materials run late or your contractor’s calendar is packed, so build in a little cushion when you plan.

Whether a finished basement counts toward your home’s official square footage depends on local rules. Many areas only include below-grade space if it has code-approved egress, fully finished walls, ceilings, and floors, plus consistent heating. 

Check with your local assessor or building department before you start; meeting those standards can affect taxes, appraisals, and resale value.

Building codes require a checklist: dedicated heat and electrical service, a code-approved stairway, and at least one egress window or exterior door. Walls, ceilings, and floors must be fully finished and meet insulation, ventilation, and fire-separation standards. If you add a bedroom, you’ll also need a closet, proper clearances, and safe exits. If you change the layout later, be ready to update the space so every new room still meets today’s code.

The Randolph, NJ homeowners’ guide to basement remodelings

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