SOUTH JERSEY & PENNSYLVANIA’S MAIN LINE
Premium Home Additions & Whole-Home Remodeling
MAG Development designs and builds large-scale additions, in-law suites, and full renovations for homeowners who expect white-glove craftsmanship — projects starting at $40K.
MAG Development the best remodeling company in NJ & PA, specializing in turning remodeling bathrooms, kitchens, and rooms into luxurious and functional spaces. Our team of interior designers will guide you through every step of the home renovation project from design to installation, ensuring your vision becomes a reality.
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⭐ 4.9 · 94 Google Reviews
Licensed & Insured in NJ & PA
One Accountable Team
Projects from $40K
WHAT WE BUILD Signature Services
We focus on high-value, large-scale projects — the additions and renovations that transform how a home lives and what it’s worth.
Home Additions
In-Law Suites
2nd Story Additions
Whole-Home Build
Basement Remodeling
Kitchens & Baths
WHY MAG Built for Homeowners Who Expect More
We don’t chase volume. We take on a limited number of large projects a year so every client gets architectural attention, structural expertise, and a finish that holds its value.
1. Design-Build Under One Roof
One accountable team owns your project from first sketch to final walkthrough.
2. Structural & Engineering Expertise
Second stories, load-bearing changes, and additions done right from the framing up.
3. Financing Guidance
We help you navigate HELOC and renovation-loan pathways
RECENT PROJECTS See the Transformations
Real MAG projects across South Jersey and the Main Line — before, during, and after.
Moorestown, NJ Full Two-Story Home Rebuild
Voorhees, NJ Spa-Level Master Bathroom
Bryn Mawr, PA Custom Basement Home Gym
HOW IT WORKS Our 4-Step Process
Consultation
We visit, listen, and assess what's possible for your home and budget.
Design & Estimate
Custom plans, 3D renderings, and a transparent, itemized proposal.
Build
Permits, engineering, and construction handled by one dedicated team.
Walkthrough
A final review to make sure every detail meets our standard and yours.
WHERE WE WORK Serving NJ & the Main Line
South Jersey
Pennsylvania — Main Line
Financing That Fits Big Projects
CLIENT VOICES What Homeowners Say
MAG did an unbelievable job with my bathroom renovation. Gabe and his team were responsive, detailed, and clean; and the project was completed on time and for a great price. I will definitely be using them again for my next project.
— Tim Connolly
We hired Mag Development group to update our kitchen. They went above and beyond to find the unique fixtures and features I needed in my kitchen. From updating the electrical to incorporating my unique style. The tile work was incredible!
— Don Schmid
We loved working with the team. Communication was clear and timely, and the project was completed on schedule. We couldn’t be happier with how everything turned out and would highly recommend their work to anyone considering a bathroom update.
— Alexsis Glesener
FAQ
Most Frequent Questions & Answers
Yes, at MAG Development Inc. all of our contractors are certified and licensed in New Jersey and Pennsylvania.
Our prices vary by project. For a more reliable estimate, give us a call and we can send a team member to give you a free quote.
At MAG Development Inc, we work on many types of projects ranging from kitchen, bathroom, basement remodeling. We also work on flooring, and interior painting.