Top-rated basement remodelers.

Get matched with top basement remodelers in Mendham, 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.

Find Basement remodelers in Mendham

Avatar for Joseph & Sons Construction, LLC
Joseph & Sons Construction, LLC
5.0(
145
)

Serving Mendham, NJ and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"Angelo & team were amazing to work with. From design to implementation, it was a smooth experience. We had the same crew working at our house every day- the guys were friendly, polite, tolerated my 5 year old daughter asking them what they were doing each day (LOL). Their work was top notch- no corners cut. Every day they left my house clean, nothing left out- all materials put away and the rooms were safe for my kids and dog to be in. We couldn’t be happier with the work done. "
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 DMR Millwork
DMR Millwork
4.9(
39
)

Serving Mendham, NJ and surrounding areas

Approved

In business since 1985

Free estimates

Warranties offered

"Great experience with DMR. They came to do a simple job of repairing a shower pan and it grew into a much more intense repair do to a leak. They got it finished in a relatively short timeline and the price seemed fair. I will use them again for any future work I need at my home. I highly recommend"
Bathroom
Bathroom
Bathroom
Kitchen
Kitchen

+134

Response time6 hrs
7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Monk's Home Improvements Inc.
Monk's Home Improvements Inc.
4.8(
534
)

Serving Mendham, NJ and surrounding areas

Approved (Corporate)

In business since 2007

Free estimates

Credit card accepted

"We had an excellent experience with Monk's from start to finish. Ward and team were prompt, gave us an accurate estimate of the cost and timeline needed for the garage stairs remodel, and Ward made some valuable suggestions to improve the functionality of the remodel. The work was done very professionally, the Monk's team was finished in less than a day and left the job site immaculately clean. I would be very pleased to work with Monk's on future home improvement projects. "
13 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for JM Contracting Group, LLC
JM Contracting Group, LLC
4.9(
71
)

Serving Mendham, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Customers say: Quality work

"JM did a fantastic job. About 13 years ago, while living at our previous residence: JM remodeled and modernized our full Kitchen, two full bathrooms and, after many tries by other contractors, he was able to stop a leak from our roof at no charge. About 10 years ago, at our current residence , JM remodeled and modernized our full kitchen and did a unique job of updating 4 large sliding closet doors. He removed the cheap inserts, and replaced them with 1/4” high quality plywood into the frames. He then, using wood molding, he made the face of the doors look like real wood doors. Doors were stained and look like expensive oak doors! JM comes up with excellent suggestions, alternatives, and expense saving ideas. We plan on relying on his expertise when we’re ready to upgrade our Patio. All the best to JM Group!"
West Windsor NJ
First Floor MakeOver
Springfield Makeover
Master Bedroom
Living Rm

+55

Response time5 hrs
Recommended by85%of homeowners
Avatar for Quality 1st Basement Systems, Inc
Quality 1st Basement Systems, Inc
4.6(
201
)

Serving Mendham, NJ and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Service was great from sales, to installation, to post installation support. Very responsive, very professional. It's hard to find in this 'space'--there are a lot of shady people in basement water damage/repair, and this place exceeded expectations. We've had our repair in place for 4+ years, with only 1 small issue on a wall seam crack, and that was fixed within 24 hours of reporting the issue. Stand up place! Thank you for such great service and support."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+129

Response time10 hrs
Response rate99%
Recommended by85%of homeowners
Avatar for Built To Last Home Improvements, LLC
Built To Last Home Improvements, LLC
4.8(
24
)

Serving Mendham, NJ and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"I gave this man $3000 which was 33% of the job upfront. Was supposed to give him 33% at the halfway part And 34% upon completion. But when I went to my bathroom and realized you left drugs in my bathroom and I have small children. Not like that 3000 black and small cleaners caught easy and heâ s lucky he hasnâ t been charged with nothing. Only reason that happened is because I wouldnâ t pursue charges. He obviously is a drug addict and has a problem so maybe he should get help Possibly isnâ t the option maybe rehab is. If you paid for supplies, you got ripped off wait 10 years and it will all fall apart charges for certain stuff but buys different stuff so he can use the extra money to pick himself up drugs without nobody noticing, I am so terribly in grief over this. $3000 he ran off with how is Matt doing in business and not in a jail cell"
Outdoor Shower Right Angle
Outdoor Shower Left
Design  Render
Outdoor Shower
Cabin Flooring

+4

Response time10 hrs
Response rate89%
Recommended by95%of homeowners
Avatar for Legacy Construction & Landscaping, LLC
Legacy Construction & Landscaping, LLC
4.9(
9
)

Serving Mendham, NJ and surrounding areas

Approved

In business since 2015

Free estimates

Small jobs welcome

"Carmelo and his team really raised the bar! They were super responsive, easy to reach, and clearly cared about making sure we were happy every step of the way. Carmelo was flexible with material choices and kept us in the loop with great info and advice while we made decisions. He renovated both of our bathrooms and installed hardwood floors in our living and dining rooms. Each bathroom was done in just two weeks—and they look incredible! The work was top-notch, the price was totally fair, and the whole process was smooth and stress-free. I’ll definitely be hiring Carmelo and his crew again. Couldn’t recommend them more!"
Basement Remodel
Basement Remodel
Basement Remodel
Basement Remodel
Basement Remodel

+15

Response time4 hrs
14 neighbors recently requested a quote
Recommended by88%of homeowners
...
Showing 1-10 of 1818
FAQs for basement remodeling projects in Mendham, 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 Mendham, NJ homeowners’ guide to basement remodelings

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