ADU Planning: Seattle DADU Rules, Costs and Rental Income Potential

Regulations Research

Local ADU ordinances vary. Size limits typically apply. Setback requirements checked. Owner occupancy may be required.

Design Considerations

Independent entrance required. Kitchen and bath included. Privacy for both units. Parking solutions planned.

Construction Options

Detached new construction. Garage conversion. Basement conversion. Addition to existing.

Financial Factors

Construction costs significant. Rental income potential. Property value impact. Financing options available.