ADU Calculator

Estimate construction costs, rental income, and ROI for Accessory Dwelling Units in North Carolina.

Property Address

Current Property Value ($)

Lot Size (sqft)

Zoning Type

ADU Type

ADU Size (sqft, 300–1200)

Construction Quality

Current Monthly Rent (Primary, $)

Target Monthly ADU Rent ($)

North Carolina County

BUILD COST

MONTHLY ADU INCOME

ANNUAL GROSS INCOME

GROSS RENT MULTIPLIER

AFTER-ADU PROPERTY VALUE

VALUE ADD ESTIMATE

PAYBACK PERIOD (YEARS)

5-YEAR ROI

DSCR (at 70% LTV, 7% rate, 30yr)

NC Zoning Note: Check local county and city ADU ordinances for compliance before proceeding.