Home Extension Calculator

Step 1 Property Details

Estimated Home Value ($)

Square Footage

Bedrooms

Bathrooms

Year Built

Annual Property Tax ($)

Step 2 Financial Details

Remaining Mortgage Balance ($)

Current Mortgage Rate (%)

Credit Score Range

Cash Available for Project ($)

Step 3 Configure Your Extension

Build Direction

Ground Floor — Back Ground Floor — Side Second Story

Dry ($/sqft)

Wet ($/sqft)

Standard

Mid-range

Premium

Total Construction Cost

—

including soft costs

Cost Per Square Foot

—

weighted average

Estimated New Home Value

—

after addition

Cost Breakdown

Category	Sqft	$/Sqft	Cost	%

Financing Comparison

Post-Addition Value & ROI

Monthly Payment Comparison