In-Law Suite Construction in New Jersey
If you’re looking to create a private, comfortable space for family or guests—MAG Development specializes in custom in-law suite construction across New Jersey. We design and build functional additions that blend seamlessly with your home while enhancing comfort, privacy, and property value.
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What We Do in an In-Law Suite Project
From concept to completion, MAG Development manages every step of your in-law suite addition with professionalism and attention to detail. Here’s what you can expect when working with our team:
Permits & Licensing
We handle all necessary permits and meet local code requirements to ensure your project is compliant and stress-free.
Our design team creates a personalized layout tailored to your home, lifestyle, and family needs.
We make sure the new suite blends perfectly with your existing home’s structure and style.
Full Construction Services
From foundation to finish, our crew manages framing, plumbing, electrical, and HVAC.
Choose from high-quality flooring, cabinetry, countertops, and fixtures to customize the space.
We complete a detailed inspection and walkthrough to guarantee your satisfaction.
In-Law Suites That Feel Like Part of Your Home
At MAG Development, we believe an in-law suite should look and feel like it was always part of your home. Our team carefully matches your home’s architecture, finishes, and style—so your new living space blends seamlessly inside and out. Whether it’s for family, guests, or future resale value, we design with comfort and functionality in mind.

Why New Jersey Homeowners Trust MAG Development
Locally based and New Jersey proud
Dedicated design + build team
Licensed, insured, and experienced
Clear quotes, no hidden fees
See Our In-Law Suite Projects
From garage conversions to full private living spaces, we’ve built in-law suites across New Jersey that give families more comfort, privacy, and flexibility. Want to see examples? We’re happy to share references and recent projects.

Book Your Free Consultation
No pushy sales. No cookie-cutter solutions. Just a conversation about your goals and a clear plan to make it happen. Fill out our short form or give us a call to schedule your free, no-pressure consultation.