ADU in Mill Valley, CA

Property value increase: 20 to 35 percent. Freddie Mac research shows homes with ADUs sell for $150,000 to $300,000 more than comparable homes without them ( Hamilton Exteriors 2024-2026 project data ).
Monthly rental income: $2,500 to $3,500 for a one-bedroom detached ADU in Mill Valley.
Payback period: 5 to 8 years through rental income alone, not accounting for property value appreciation.

Mill Valley ADU builder offering architect-led design, permitting, and construction. Fire-safe, code-compliant ADUs for Marin County. CSLB #1078806.