MiCasa

Herman Chen Construction

License #1079096 · activelicensed since 2021Bbased in San Franciscobond $25kworkers’ comp: carrier

Named as contractor on 2 ADU projects in San Francisco (and 16 permits of any kind). Verify at CSLB before hiring.

ADU projects
2
1 attached addition · 1 ground-floor conversion
Declared cost (middle half)
$239k–$253k
median $246k
Build time
11 months
median, issued → completed
Open · finished
0 · 2

Their ADU projects

  1. 38 Edna StWest of Twin Peaks
    AttachedCompleted8 permitsdeclared $260k
    filed Aug 2024permit 9 monthsbuilt 11 months · done May 2026
    ADU permit 202408057944 · city record · flagged ADU by SF DBI
  2. 45 Pinehurst WayWest of Twin Peaks
    Converted · ground-floor conversionCompleted4 permitsdeclared $233k + other work
    filed Nov 2023permit 5 monthsbuilt 11 months · done Mar 2025
    ADU permit 202311030101 · city record · flagged ADU by SF DBI

Each row is one project: the ADU permit plus its revisions, sub-permits and trade permits. Dates are the city’s.