ADU Directory

Under 500 sqft ADU Floor Plans

Under 500 sqft ADUs offer a specific tradeoff between living space, cost, and lot impact. Browse 3 under 500 sqft designs available from verified builders.

The Hideaway
The Hideaway
from $80k
Compact 200 sqft studio for guests or rental
200 sqftStudio1 BA
The Cottage 400
The Cottage 400
from $130k
Efficient 400 sqft one-bedroom
400 sqft1 BR1 BA
The Garage Studio 400
The Garage Studio 400
from $90k
Studio garage conversion
400 sqftStudio1 BA