Expert Bathroom Construction Backed
by Over 33 Years of Experience
Why Choose NJM for Your Bathroom Remodeling or Construction Project
Fully licensed and insured for plumbing, electrical, framing, and full bathroom renovations.
Fully licensed and insured for plumbing, electrical, framing, and full bathroom renovations.
We use proper membranes, sealing systems, and installation techniques to prevent leaks and long-term damage.
We upgrade layouts, fixtures, lighting, and storage to create bathrooms that are both stylish and practical.
From demolition to final finishing, we handle every part of the project with unmatched precision.
Decades of professional experience mean we install fixtures, piping, and full systems correctly the first time — with workmanship that lasts.
No hidden charges or surprise add-ons. You’ll receive a clear estimate outlining exactly what your installation includes.
Structural & Framing Assessment
Assessment of wall supports, framing, and layout changes before construction.
Waterproofing & Moisture Barrier Testing
Confirming proper installation of membranes, backer board, and seals in wet areas.
Plumbing & Venting Inspection
Evaluation of drain lines, water lines, venting, and fixture placement for safe, efficient function.
Tile & Surface Integrity Review
Ensuring proper adhesion, leveling, grout sealing, and waterproof performance.
Electrical & GFCI Safety Check
Inspection of outlets, circuits, lighting zones, and bathroom-specific safety requirements.
Code Compliance & Permit Assistance
Full adherence to Nassau and Suffolk County building and plumbing codes.
Trusted Construction Expertise for Long Island Homes
Our Bathroom Construction Safety & Inspection Services Include:
NJM performs detailed inspections to ensure your bathroom is built safely, efficiently, and in full compliance with Long Island plumbing and building codes.
Find Contracting Services Near You!
Service Area Links:
- Long Island
- Nassau County
- Suffolk County
Professional Bathroom Construction & Remodeling on Long Island
Transform your bathroom into a modern, functional, and beautifully designed space with NJM’s full-service construction and remodeling solutions. From plumbing and tilework to lighting and custom layouts, we deliver high-quality results across Nassau and Suffolk County.
Quality Craftsmanship • Modern Design • Code-Compliant Construction
What Our Long Island Clients Are Saying...
Kris
I couldn’t recommend Neil enough! From start to finish him and his team were professional, efficient and experienced. We had a job pulling up rocks and putting top soil down which I know can be a tedious job. We appreciate the work and look
Evelyn Powers
We had an ongoing issue with clogs. My daughter woke up to flooding in her bedroom from her toilet, which was not fun! This was our first time having NJM in our home. Neil was knowledgeable and gave us several options. we chose to have him use the camera to get to the root of the problem. He was able to pinpoint several issues and was able to fix clog and clean out the pipes. Neil and his crew were very professional,
Irene Cheung
I contacted NJM Mechanical because I didn’t have hot water anywhere in my house. Neil was able to diagnose the issue and get to work. My navien tankless water heater is only a year old and still under warranty. Instead of waiting on Navien to send the part so the issue can be corrected, Neil went out, found the part, purchased it,
William Lo
Great experience. Neil came out and took the time to explain everything thoroughly. He was able to fix all the errors on our Navien and have it back up and running. Following up a week later. Neil and Mike came out to redo the Navien system for proper instillation.
Unfortunatley, after there was a gas leak with our Navien system. Neil was able to get
James Farnworth
Neil from NJM was able to get my ac system up and running when others could not. He was honest with me right from the beginning and all costs were discussed before repairs began. Additionally, Neil spent time explaining to me how my system operates and the things I could do to help it run at peak performance. It was quite refreshing to experience a service technician who demonstrated the uppermost
Raul Chardon
Honest professional full of knowledge not BS. Takes pride in his craft and is a master of it.
Trusted Bathroom Construction Experts Serving Long Island
Whether you're upgrading fixtures, expanding the layout, or undergoing a full bathroom renovation, NJM Mechanical and Contracting provides expert construction backed by 33+ years of experience. Our team handles every detail — framing, plumbing, electrical, tilework, waterproofing, and finishing — ensuring durable and visually stunning results.
We specialize in bathrooms built for comfort, efficiency, and long-term value, always delivering clean, code-compliant workmanship that enhances your home.
Custom design and space planning to improve bathroom functionality, aesthetics, and long-term comfort.
Professional installation of walk-in showers, tubs, tile surrounds, and enclosures with proper waterproofing and finishing.
Licensed plumbing work including new supply lines, drains, valves, toilets, sinks, and fixture upgrades.
High-quality tile installation for floors, shower walls, backsplashes, accents, and waterproofing systems.
Installation of vanities, shelving, medicine cabinets, and custom storage solutions for improved organization.
Upgraded lighting design, GFCI outlets, exhaust fans, and electrical enhancements for safety and comfort.
Durable, moisture-resistant flooring options including tile, luxury vinyl, engineered materials, and more.