What this remodeling cost calculator estimates

The calculator gives a planning range for a home remodeling project in Pennsylvania or New Jersey. You choose a project type, a finish level, the size of the space, optional add-ons, your area and a timeline. It then adjusts the figure for your region and, if you leave the options on, adds line items for permits and a contingency allowance.

It is a ballpark, not a quote. It cannot see your house, so it does not price hidden conditions behind walls, structural surprises, unusual site access, or the exact fixtures and finishes you select. Permit requirements and fees also differ by municipality, so confirm them with your local office before you budget.

For context, our 2026 home renovation cost guide lists basement finishing at roughly $20,000 to $75,000+ and a room addition at roughly $25,000 to $125,000+, depending on the finish tier. For Lehigh Valley numbers, see the Allentown renovation cost guide, and read the PA renovation permit guide to see what typically needs a permit. When you are ready for a number based on your own house, request a free estimate.