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  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon87
    Verified basement remodels reviews

Top-Rated Basement remodelers in Mastic - Updated Nov 2026

Avatar for Unique Interior Finishes
Unique Interior Finishes
4.8(
39
)
Basement - Remodel

Serving Mastic, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Customers say: True professional

"Excellent quality work. Project was a large basement, over 1500 sq ft. Always on time and very responsible. Reviewed progress on a regular basis and customized everything according to our wishes. Very happy with the final product. Glad we hired the pros. Highly recommended."
Monica`s basement
monica`s basement
monica`s basement
Monica`s basement
Monica`s basement

+26

Response time12 hrs
Response rate95%
28 neighbors recently requested a quote
Avatar for Pristine East End Contracting
Pristine East End Contracting
4.8(
81
)
Basement - Remodel

Serving Mastic, NY and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"Nick did an awesome job with our medicine cabinets. His work went above and beyond. When he noticed too-large gaps between the doors and frames, he drove all the way to the building supply store to get better-sized parts. Would definitely recommend him."
Project Photos
Recommended by95%of homeowners
Avatar for Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
4.7(
13
)
Basement - Remodel

Serving Mastic, NY and surrounding areas

Approved

In business since 1986

Free estimates

Customers say: True professional

"Quite a few years ago, Artie renovated our bathroom.  Not only did he do a super job, but he made so many helpful suggestions along the way making decision making much easier.  For example, he suggested the type of tub to install and ones to avoid.  He helped us order merchandise and we were able to get a contractor's discount! 
     Recently we wanted to add a stone grilling station and a gazebo to our yard.  Everything I shopped for, I did not like or it was way over priced.....Artie sat with me and helped design a BEAUTIFUL, river rock-blue slate grilling station.  Once again, he directed me where to get the grill, type of grill, what to avoid and what would look best.  He takes the time to listen and know exactly what the customer is looking for.  He made everything by hand and the result shows....We get so many compliments from it!  He is currently completing a Tiki Hut Bar/Gazebo........when it came to ordering the tiki hut straw for the roof, Artie took it upon himself to google information online and forward me what he had found.....this made it so much easier on my part!  The bar came out great!!!
     Not only is Artie extremely talented, but he is so easy to work with, is very professional,responsible and shows up for a job when he says he will.....when do you ever get that?????  I HIGHLY recommend Artie Derosa!!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

Response time2 days
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Alta Renovations Corp
Alta Renovations Corp
5.0(
30
)
Basement - Remodel

Serving Mastic, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Warranties offered

"Jose Is a fantastic choice for a remodeling job. He fully remodeled my kitchen and first floor including moving walls and installing new hardwood floors. Not only are his carpentry skills exceptional but he also has an eye for detail. He is meticulous and finished each project to my high standards. Jose is a great choice as he has the skills and knowledge to fully complete any job from demo to finishing and painting."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+26

Response time8 hrs
22 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Loja Renovations Fine Carpentry LLC
Loja Renovations Fine Carpentry LLC
5.0(
27
)
Basement - Remodel

Serving Mastic, NY and surrounding areas

Approved

In business since 2024

Free estimates

Small jobs welcome

"I highly recommend Loja Renovations & Fine Carpentry LLC! Manuel and Fabian were professional, courteous, and did an outstanding job. They helped me with several projects in my home, including mounting two TVs, installing a shoe rack, hanging a very heavy mirror, putting up window shades, and installing several shelves. Everything was done carefully and professionally, and they were extremely helpful throughout the entire process. What I especially appreciated was how prompt and reliable they were. They came all the way from Corona, Queens, and arrived ready to get everything done. Their attention to detail and quality of work really stood out. They offer a wide range of renovation and carpentry services, and based on my experience, I would absolutely hire them again for future projects. It’s not always easy to find people who are dependable, skilled, courteous, and take pride in their work, so I’m very glad I found Manuel and Fabian."
Bathroom
Bathroom
Bathroom
Bathroom
Bathroom

+5

Response time1 day
Response rate100%
Avatar for A.S.M. Home Improvements
A.S.M. Home Improvements
5.0(
12
)
Basement - Remodel

Serving Mastic, NY and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"We cannot say enough about ASM Home Improvement. The owner Anthony was absolutely amazing every step of the way. First he put our mind at ease to what we wanted was not only possible but was going to be great and great it was ! Him and his crew were professional and sincerely cared about the job. The workmanship was top notch. Anthony’s talent to make our deck beautiful truly showed and we absolutely love it ! We will hire Anthony and his crew again for our next project and highly recommend him and his company. He will make your vision a reality!"
Remodeling
Remodeling
Remodeling
Remodeling
2 of 2
fire pit

+48

Response time11 hrs
11 neighbors recently requested a quote
Recommended by58%of homeowners
Avatar for All Precision Home Improvement, Inc.
All Precision Home Improvement, Inc.
4.9(
55
)
Basement - Remodel

Serving Mastic, NY and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"Anthony is exceptional. He is extremely professional and takes pride in his work. From the first day he was easy to communicate with and very reasonable when it came to working within our budget. He's got a great team and they work HARD. Very professional and did a beautiful job on our basement renovation."
Before repair
Before repair
Before repair
Before repair
Starting the repair

+328

Response time6 hrs
2 neighbors recently requested a quote
Recommended by90%of homeowners
MGT Construction, Corp.
4.1(
17
)
Basement - Remodel

Serving Mastic, NY and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"We hired Steven to redo our kitchen floor and install a countertop backsplash. Unfortunately, the project did not go as smoothly as planned. The workmen on the first day caused damage to an adjacent floor and did a poor job with the leveling. To Steven’s credit, he immediately acknowledged the problems and arranged, at his own expense, for the floor to be refinished and the leveling redone properly. What was supposed to be a three-day project stretched into months because of these complications, and during that time we often doubted his assurances that he truly wanted the work done right. In the end, however, Steven stayed committed. After many conversations and much patience, the job was completed conscientiously and to our full satisfaction. He also gave us a substantial discount to help make up for the delays and inconvenience. While the process was far more drawn out than expected, Steven ultimately stood behind his work and made sure the final result was high quality. He is a man of integrity who really stands behind his work. This is something to truly be valued."
Greenport Second Floor Addition
Orient Complete Ground up House
Greenport Complete Ground Up House
Kitchen Remodeling Project
Orient Complete House Build - Bathrooms

+172

Response time1 day
3 neighbors recently requested a quote
Recommended by75%of homeowners
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Basement Remodel FAQs, answered by experts

Rebar is an essential part of reinforcing a basement floor, as not having it can impact its structural integrity. It helps absorb the tension factors that contribute to cracks in your floor and strengthens its load-bearing capabilities by evenly distributing the weight. Not including rebar could lead to an unstable floor, so don’t skip it!

The difficulty of adding a basement to an existing house can vary depending on the house’s location, the size of the basement, and the type and condition of the existing foundation. Adding a basement is a job best handled by the pros, so you’ll need to enlist professional help for this project.

Making a window in a basement larger costs an average of $4,200. You’ll need to pay an average of $550 to have a structural engineer plan the project, $500 to $1,500 for the installation labor, and an average of $2,200 for the excavation and window well installation. The remainder will go toward pulling permits, installing trim, and repairing drywall on the interior.

Key trends include home gyms, theatre rooms, additional rooms (bedroom/office), and more, with personalized styles reflecting individual preferences.

A walkout basement is considered to be partially below grade because at least one wall is entirely exposed. In some cases and in specific municipalities, inspectors and appraisers will still count walkout basements as below grade, which means the space can’t serve as living space or be rented out. If you intend on using the area as living space or a separate apartment, you should check with your local building department to make sure it’s legal to do so.

The Mastic, NY homeowners’ guide to basement remodels

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