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How much does it cost to add a room to my home?

By Bob Millaway, South Jersey Community Expert & REALTOR®

Adding a room costs $100 to $300 per square foot on average in New Jersey. A 200-square-foot room addition typically runs $20,000 to $60,000. Costs depend on the room type, foundation work, roofing, siding, electrical, plumbing, and HVAC. A simple bump-out costs less than a full addition. Permits, architectural plans, and engineering add to the total.

Why It Matters

Room additions are major projects. A realistic budget helps you decide whether adding on or moving to a larger home makes more sense.

Related Questions

What renovations add the most value? Should I hire a general contractor or manage the project myself? How do I find a trusted contractor for my renovation? How do I budget for a home renovation? Do I need permits for a remodel in New Jersey?

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