Thaddeus Jeffrey Plonowski

Architect · named on San Francisco building permits · Plonowski Architects+Builders · board address in Mill Valley

Public records

From the California licensing board and San Francisco permit records.

License and board record

Licensed?: License activeArchitect C-23049First issued Feb 20, 1992, expires Jun 30, 2027.
Source: DCA license roster, retrieved Nov 5, 2026
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Any board discipline?: None found.
We searched the California Architects Board enforcement list on Nov 5, 2026.
Firms on their permits: Plonowski Architects+Builders
Plonowski Architects

Their San Francisco permits

The full report lists every San Francisco permit that names Thaddeus Jeffrey Plonowski: what kinds of projects, how long the permits took compared with the city, and each permit's official record. Free, no sign-up.

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