CheckMyDesigner

Christopher P Mcmahon

Architect · Mcmahon Arch · San Francisco

Public records

From the licensing board and the city of San Francisco.

The short answer

Licensed?
License activeArchitect C-22982First issued Jan 14, 1992, expires Sep 30, 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?
106 permits since 2002, 106 in the last 5 years. Latest filed Sep 18, 2026.
What kind of projects?
Home remodel 32 · Addition 25 · Other 12
How long do their permits take?
Home remodel: within 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
124 permits that name Christopher P Mcmahon, newest first, including 18 revisions or supplements that are not counted. Select a permit to see the full record.
FiledProjectOpen
Sep 18, 20264092 18th St

Install new modular bar, new customer seating, new sinks, w/d dookups, d/w hookup, replace incandes, w/l.e.d lighting, new ada ramp(12.5" floor ht difference), remove one entry door, replace windows in kind.

Filed
Jun 10, 20264546 19th St

Add bathroom , convert 2nd laundry to 2nd bathroom, remodel 1/2 bathroom, remodel pantry

Filed
May 18, 2026266 Connecticut St

Non-structural. (soft) interior demo including walls, siding, and finishes.

Issued
Apr 10, 2026203 Eureka St

Convert (e) walk in closet to bathroom. add toilet, shower, change door 24" to 28", convert 110v to gfci. add sconce.

Complete
Sep 29, 20254546 19th St

Demo interior window walls @ foyer (to be replaced w/guardrail). new roof over atrium w/12 skylights. new leveled flr @ atrium. add gas fireplace appliance @ east wall. add new electric in newly enclosed space. refinish (e) walls w/new drywall finish. extend (e) rear deck 4'-3", fully cantilevered.

Issued
Sep 10, 20251942 Pacific Av #0

Replace (e)wooden deck @ rear w/a differently configured rear deck & enclosing the space underneath as extension of (e) basement rooms. basement flr: new addition to rear, remove (e) upper & lower decks & stiars, replace on grade wood rear deck w/mansory pavers, new glass doors & 1 new double hung w

Triage
Feb 25, 20253695 Market St

Correective action to show plans of actual construction from permit(s) 201504133511 and 201609157791 to comply with nov 202424060

Filed
Dec 3, 2024215 Eureka St

Revision to pa# 201810223816: clarify roof type (metal) and revise carpentry slope.

Complete
Feb 6, 20244334 19th St

Add 1/2 bathroom (2nd fl) in existing conditioned area to include direct vent with additional non bearing partition wall and add (2) interior doors. remodel (e) bathroom to replace (e) exhaust fan, tile and fixture and finishes. no shower pan removal. replace ladder steps to attic

Complete
Nov 17, 2022161 Beaver St

Remodel one bedroom,2 baths,1 kitchen,reconstruct laundry room fl,northwall and roof,add gangway(sloping roof deck)over new laundry roof(laundry room in kind const)no increase in footprint or height)add iron spiral stair from(e) lower patio to(e)upper deck.

Complete
Apr 18, 20221942 Pacific Av #0

Replace (e) wood deck with new wood deck in same location. replace (e) exterior stair. new deck is approximately 118 sq.ft. add a 3'x 7' balcony at 3rd flr, directly above deck.

Withdrawn
Apr 7, 20221909 V Quesada Av

Erect a 3 story,1 dwelling duplex type 5b.

Filed
Apr 7, 20221909 V Quesada Av

Erect a 4 stories,2 dwelling with one basement duplex type 5b.

Filed
Jan 3, 2022266 A Connecticut St

Rear horizontal & vertical addition. remodel/reconfig (e) sdf to add 1 new unit. add new 6 bathrms. remove (e) kitchen & replace w/new for lower unit. add kitchen & living spaces for upper unit. expand garage. add roof deck. alter front & rear of bldg w/new facade. n flat roof. upgrade foundation.

Issued
Aug 17, 20211942 Pacific Av #0

Rev to pa202008272787: change a rear window to french door in (e) opening, max u factor 0.30. add code compliant iron guardrail. no balcony.

Complete
May 6, 2021266 Connecticut St

Demolish existing 3-story type v single family residence

Withdrawn
May 6, 2021266 Connecticut St

Erect new 4-story type v 2 family residence

Withdrawn
Aug 27, 20201942 Pacific Av #0

Bsmt: replace & repair full foundation, remodel lower kitchen flr, relocate/remodel bath, relocate & upgrade mech equip, add shared laundry rm, new wine closet. 1st fl: remodel kitchen, relocate powder rm, repair (e) staircase, open wall below main stair. 2nd fl: remodel 2 baths, add gas appliance

Complete
Dec 27, 20191101 V Jarboe Av

To erect 3-story, type 5b, no basement, 2 residential unit building.

Filed
Jul 24, 20192424 Divisadero St

Remodel kitchen and remove rear yard bay window. remodel 5 bathrooms, all new electrical work( abandon old knob and tube where possible) convert unheated storage @ 2nd floor to heated rooms and media, hobby. remove photography studio/darkroom at front of 2nd floor. repair dry rot @ rear.

Complete

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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