CheckMyDesigner

Michael Joseph Castro

Architect · Brereton Architects · Oakland

Public records

From the licensing board and the city of San Francisco.

The short answer

Licensed?
License activeArchitect C-24073First issued Mar 17, 1993, expires May 31, 2027.

Source: DCA license roster, retrieved Nov 5, 2026

Verify on DCA License Search

Any board discipline?
None found.

We searched the California Architects Board enforcement list on Nov 5, 2026.

Worked in San Francisco?
91 permits since 2006, 91 in the last 5 years. Latest filed Oct 29, 2026.
What kind of projects?
Commercial or tenant improvement 74 · Other 10 · Deck, stairs or patio cover 3
How long do their permits take?
Commercial or tenant improvement: 1 month. City typical for the same review: within 1 month.

Permits filed each year

San Francisco permits by the year they were filed. The last 5 years are in blue.

What are you planning?

Pick your kind of project to see their permits for it.

Permits
113 permits that name Michael Joseph Castro, newest first, including 22 revisions or supplements that are not counted. Select a permit to see the full record.
FiledProjectOpen
Oct 29, 2026345 Spear St

1/f lobby ti: construction of non-load bearing partitions. modifications to (e) ceiling grid and tile. new office doors, frames, millwork and new finishes.

Filed
Oct 21, 2026720 California St #0

This project is limited to the slab infill of two communicating stairs between level 1+2 and level 3+4. work includes selective demolition of stairs, railing, and guards and new ceiling, light fixtures, and finishes.

Filed
Sep 24, 2026451 Pacific Av

Exterior scope for this core + shell project. the sow is reflective of the approval certificate of apprioatenss and includes replacement of an existing non-historical glass storefront with glass doors in the courtyard, and replacment of an existing roof deck with guard rails and parcel, (2)access

Filed
Sep 24, 2026425 Market St

Ste 900; demo of non-load bearing partitions, ceiling grid, lights, outlets, finishes, doors, frames and glazing. ab-017 apples

Filed
Sep 15, 2026425 Market St

Suite 1600; conversion of a single tenant flr to multi-tenant including full tenant suite demolition, construction of new multi-tenant cooridor and restroom remodel. unit 1600

Filed
Sep 10, 2026345 Spear St #0

Ground and 2nd floor: demolition of existing tenant suite on the ground floor and selective demolition on the 2nd floor. no new plumbing fixtures.

Issued
Aug 31, 20262 Harrison St

5/f: selective demo and construction of non-load bearing partitions, (e) mods to ceiling grid & tile, light ficture relocatoi and new inlcuding reswitching, new doors & frames, millwork and finishes.

Issued
Aug 6, 2026333 Bush St #0

Suite 800: t.i. project includes selective demo and construction of non-load bearing partitions, new doors, storefronts, light fixtures, ceiling, millwork, and interior finishes.

Filed
Jul 14, 2026425 Market St

Tenanat improvement project involves demolition of non load bearing partitons, ceiling grid and tile, lights, electrical outlets, finishes, doors, frames, glazing. no remodediatin work included in scope. acm to be removed or encapsulated by landlord subcontractor prior to demolition.

Filed
May 26, 20262001 37th Av

This restroom remodel project involves modification of 5 existing restrooms to include selective demolition and construction of restroom fixtures, accessories, toilet and unrinal partitions, counter tops, lighting and fixtures.

Complete
May 21, 2026188 The Embarcadero

Removal of e and installation of new mechanical chiller, associated mech equip and modification to the raised grated steel platform and stairs. stuctural mech and electrical included.

Issued
May 18, 2026451 Pacific Av

Revision to core & shell pa# 202505126265: framing detail @ level 3 elevator penthouse, elevator shaft structural framing, structural strengthening at level 3 underside of north & south roof, modification to restroom at level 2 mezzanine, a switch from a prefabication metal stair to a pre-fab wood

Issued
Feb 12, 2026451 Pacific Av

3rd fl arch ti - new non-load bearing partitions, doors & door hardware, interior glazing, ceilings, light fixtures, millwork and associated finishes. mep under separate permit see pa 202505126265 for arch core/shell

Issued
Jan 14, 2026451 Pacific Av

Revision 202505126265- to include the moment frame foundation are necessitated by field verified conditions of tghe (e) footing. (e) footing was found to be too shallow to accomadate the required dowels to resist design uplift forces

Issued
Dec 19, 2025451 Pacific Av

Level 2 - 2m: scope of work includes construction of new non-load bearing partitions, doors and door + door hardware, interior glazing, ceilings, light fixtures, millwork, and associated finishes. mep under seperate permit.

Issued
Nov 7, 2025350 University St

All work is at 1/f -project is limited to modifications to the north stair egress path & associated modifications to existing components along this path. scope includes slective demolition of non-load bearing partitions, new rated doors and frames, exit lighting, new exterior exit stair & associated

Complete
Oct 3, 2025451 Pacific Av

1st floor: interior office build-out of level 1 and level2 mezzanine (l1 +lm1). scope includes construction of new non-load bearing partitions, doors, and door hardware, interior glazing ceilings, light fixtures, millwork, and associated finishes.

Issued
Aug 14, 2025425 Market St

18th floor: modification and expansion of existing full floor office suite to include selective demolition and construction of non-load bearing partitions, existing modifications to ceiling grid & tile, light fixture relocation & new including re-switching, new office doors & frames,

Complete
Jun 26, 2025345 California St

17th fl- restroom upgrade-new partitions, millwork, finishes, add 2 floor drains, upgrade lighting fixtures. plumbing, electrical & fire life safety are deferred submittals

Complete
Jun 6, 2025451 Pacific Av

Addition of new enclosed exit stair extending from level b to 2;(n) elevator erviing lvl 1,1m,2,2m,3.construction & assoc demo for the partial reframing of mezz.mod to steel bracing frams and seismic bracing.(n) partitions,elevator shaft, exit stair.new ada baths, lighting & finishes.

Issued

Sources: DataSF i98e-djp9, 3pee-9qhc, retrieved Nov 5, 2026. Names on permits are matched to licenses by license number and name; unmatched records are not shown.

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