Our Services
Home Additions
More space. More possibilities.
Home Additions in New Jersey
When your family grows or your needs change, a well-designed home addition is often the smartest solution. AJH Construction seamlessly integrates new square footage into your existing home - from sunrooms and second-story additions to in-law suites and garage conversions.
At AJH Construction, every home additions project begins with a thorough site assessment and detailed planning phase. We work closely with you to understand your goals, budget, and timeline — then build a project plan that delivers on all three.
Our trade professionals hold all required New Jersey licenses and certifications. Every aspect of your project is permitted, inspected, and documented — giving you peace of mind and protecting your investment when you sell.
Types of Home Additions We Build in New Jersey
Not all additions are created equal. A room bump-out — extending an existing space by 150 to 400 square feet — is the most straightforward option and often doesn't require a full new foundation. A first-floor addition of a full room or suite requires new foundation work but stays within the existing footprint constraints. Second-story additions are the most complex and most efficient use of an existing foundation: they can double living space without consuming yard area or crossing setback lines. Sunrooms and four-season rooms offer a lighter construction path with faster timelines. In-law suites are their own category, governed by NJ's evolving accessory dwelling unit rules that vary by municipality.
Navigating NJ Zoning for Home Additions
New Jersey's municipalities each enforce their own zoning ordinances, and additions require navigating lot coverage limits, setback requirements, and FAR (floor area ratio) rules before a design is finalized. In many established NJ neighborhoods, lots are at or near maximum coverage — which means some additions may require a variance from the local zoning board, a process that can add 3–6 months. AJH Construction works with architects and design professionals to help identify local requirements early in the process, so you understand the landscape before committing to a design.
What's Included
Our Process
Frequently Asked Questions
How do I know if my lot can accommodate an addition?
Do I need permits for a home addition in New Jersey?
How long does a home addition take from start to finish?
Can you add a second story to a ranch or cape home in New Jersey?
Will a home addition affect my property taxes in New Jersey?
Ready to Get Started?
Request your free, no-obligation estimate for your additions project.
Get Free Estimate(973) 930-4628Why Trust AJH
Client Stories
Trusted by New Jersey's
Most Discerning Homeowners.
“Working with AJH Construction on our custom home was the best decision we made. From day one, the team was professional, communicative, and meticulous. They delivered on time and our home is absolutely stunning. We couldn't be happier.”
“I had three contractors quote my bathroom remodel. AJH were reasonable, trustworthy, knowledgeable and detail-oriented. The finished bathroom looks like something out of a magazine. Couldn't be happier with their work, worth every penny!”
“Our kitchen renovation was complex - we removed a load-bearing wall and completely reconfigured the space. AJH handled the structural engineering coordination, permits, and construction flawlessly. The result is breathtaking.”
Ready to Begin?
Your vision deserves
extraordinary execution.
Schedule a private consultation. We'll visit your property, understand your vision, and present a detailed proposal — with no obligation.
Licensed & Insured · New Jersey