What was permitted
Homeowners in Mill Valley exploring the possibility of adding an Accessory Dwelling Unit (ADU) can find cost benchmarks from this recent permit. This project details the conversion of an existing garage into an ADU, with an addition.
This significant residential remodel was issued on June 17, 2026, with an estimated cost of $188,000. The contractor for this conversion is I CONSTRUCTION AND STRUCTURAL INC.
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View the official permit record
Tracking number, work description, cost and dates
View the official permit record
Tracking number, work description, cost and dates
| Tracking number | 93886 |
|---|---|
| Work permit # | — |
| Job filing number | — |
| Work type | Non-struc Residential Remodels and Alterations |
| Status | Issued |
| Job description | Conversion Of (E) Garage To A D U, Addition To A D Ut.D. 2-20-26 3/25/26 - Refund Adu Fee Of $2500, Al |
| Floor / unit | — |
| Estimated cost | $188,000 |
| Approved | December 30, 2025 |
| Issued | June 17, 2026 |
| Expires | — |
| BBL | — |
| BIN | — |
Related searches
ADU conversionMill ValleyMarin Countygarage conversionresidential remodelaccessory dwelling unit$150,000-$200,000