Updated: Jan 04, 2026
Location and Projects
Address
244 MULLEN, San Francisco, CA, 94110
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Architect Mason Kirby, Inc
Architect Mason Kirby, Inc, 244 Mullen, San Francisco, CA holds a Architect license according to the California license board.
Their BuildZoom score of 110 ranks in the top 4% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Architect Mason Kirby, Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
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Architect Mason Kirby, Inc Contact Information
Address: 244 MULLEN, San Francisco, CA 94110
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Architect Mason Kirby, Inc San Francisco
Quality
110
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Architect Mason Kirby, Inc has a BuildZoom score of 110, which places them above 96% of 336,931 contractors in California.
Activity
|
1 project
|
2026 |
|
16 projects
|
2025 |
|
19 projects
|
2024 |
|
16 projects
|
2023 |
Our building permit records indicate that Architect Mason Kirby, Inc has worked on at least
52.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
12 projects
|
Home Additions |
Analyzing permits over the last 4 years shows that Architect Mason Kirby, Inc mostly works on
home addition
projects.
Pricing
|
13 projects
|
< $5k |
|
9 projects
|
$5k-$20k |
|
8 projects
|
$20k-$50k |
|
10 projects
|
$50k-$100k |
|
9 projects
|
$100k-$250k |
|
4 projects
|
$250k-$500k |
|
1 project
|
$500k-$1mil |
The typical size of their permits is approximately $30,000. This graph shows the distribution of these job values.
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by Architect Mason Kirby, Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Conversion of garage/storage to new habitable space 2. 2nd floor renovation 3. 3rd floor addition
Valuation:
$375,000
Permit #:
202504295406
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Excavation of approx 47 cu yd; remodel and horizontal expansion of 1st fl; remodel of 2nd fl (partial); removal of gas service full electric 20181
Valuation:
$185,000
Permit #:
202504144355
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
100% affordable housing mayor dir 13-01: addition 2-local adu's to 1/f: (1)studio and (1)2-bedroom. (e) cottage @ clarion alley unchanged. voluntary soft story seismic retrofit per adminstrative bulletin no.94 under separate permit. sprinkler under separate permit. relocate rear stair on separate
Valuation:
$209,352
Permit #:
202407106115
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Kitchen and bathroom remodel addition of half bathroom relocate laundry to garage replace windows in front replace flooring and repaint interior. demolish of deck and reconstruction as shown on plans
Valuation:
$80,000
Permit #:
202506239199
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
New adu proposed with new single family residence. this project travels with #2021.0729.5380. (lot a) approved conditional use: 2020-007383cua demolition permit application #2021.0614.2334 672 hamilton st new construction permit application #2021.0729.5380
Valuation:
$151,200
Permit #:
202110180694
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Conversion of (e) basement storage & crawlspace to (n) habitable space relocate stairs down 1/f: (e) 1/2-bath & hallway renovation (4) (n) wood windows & (1) wood door/side lite @ basement (not visible from street)
Valuation:
$460,000
Permit #:
202311160908
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Legalization of 1st floor into a converted adu per government code section 65852.2(a) through (d). (n) window @ south wall demolish (e) interior stair from 1st floor to 2nd floor. (n) 1-hr rated floor/ceiling fire separation @ (e) stair opening. (n) landing & stair @ (e) front eero window
Valuation:
$300,000
Permit #:
202309126361
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Restore original two residential flats with one dwelling unit on the 2nd floor and the second unit on the third floor to satisfy planning enforcement #2019015765enf and building department nov#201975082
Valuation:
$7,568
Permit #:
201909121511
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Front stair replacement in kind. remove gas service all electric in area of work. new insulation at roof. kithcen renovation
Valuation:
$45,000
Permit #:
202503051616
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Mayor's directive 13-01 priority: (front building) replacement of broke window panes. remove/replace in kind of windows in each unit. remove/replace of all doors in each unit. remove/replace flooring in each unit. remove/replace bathroom fixtures. remove/replace kitchen fixtures
Valuation:
$10,000
Permit #:
202407025689
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Revision to pa 2016-0916-7950 to change the previously approved ~10-foot tall steel soldier pile and wood lagging wall adjacent to the east side of the rear patio to a concrete retaining wall using a previously approved structural detail
Valuation:
$1,000
Permit #:
202409090313
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Voluntary barrier removal & lowering of entry to sidewalk level for increased accessibility. renovation of existing 2nd floor kitchen into new fully accessible bathroom. renovation of existing 3rd floor kitchen into new fully accessible kitchen
Valuation:
$77,000
Permit #:
202102094335
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Rear addition with new 2nd dwelling unit partially within (e) ground floor level. modification as required to (e) dwelling. new unit has 2 bedroom & 2 baths
Valuation:
$260,000
Permit #:
201710131190
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Interior remodel: replacement of (e) g/f bathroom addition new dry sauna new gas fireplace new replacement of (e) door and (e) windows with new french doors at rear balcony replacement of 3 of (e) wood slat exterior stair enclosure with new glass view panels. no change to habitable square footage
Valuation:
$60,000
Permit #:
202110120261
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Ref coa#2022-005798coa. 2)interior renovation of 952 including: conversion on 1st floor storage to new habitable space infill under extg floor above approx 93 sq ft and partial renovation of extg bathroom. 3)interior renovation of 954 including: legalize 4th floor and provide nftp 13r sprinklers
Valuation:
$200,000
Permit #:
202212299374
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
First floor single story addition at rear with roof deck. 1st and 2nd floor renovation. window & exterior door replacement. front facade stucco replacement. new rear deck
Valuation:
$200,000
Permit #:
202208190941
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Revision to pa#202206216655 to address nov #202311161: new egress door from lot 9 to sidewalk relocation of existing store front and door and associated path of travel. permit #202206216655 was original issued under lot 0512/031 then was subdivided as 2301 lombard (0512/91) and
Valuation:
$5,000
Permit #:
202411195269
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
33 - barber/beaut...
Rev pa# 201806192232 for 159 bonview & in coordination w 157 bonview easement in pa# 204810042285 field discovered conditions repair & remove extg crumbing & deteriorating exterior stair wall provide new reinforced concrete wall per structural drawings
Valuation:
$4,000
Permit #:
202305318898
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Rev pa# 201806192232 for 159 bonview & in coordination w 157 bonview easement in pa# 204810042285 field discovered conditions repair & remove extg crumbing & deteriorating exterior stair wall provide new reinforced concrete wall per structural drawings
Valuation:
$4,000
Permit #:
202305318898
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
1. complying with nov #202422466 & nov # 202288431. 2. addition of adu as per state program
Valuation:
$25,000
Permit #:
202504144365
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
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Verified License
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Architect Mason Kirby, Inc License info
Verified License
| License # | C29468 |
| Status | Active |
| State | California |
| Type | Architect |
- BuildZoom verified this license was active as of July 2025.
Verify this license's status for Architect Mason Kirby, Inc at the California Architect License Board.
This is a sample of licensing data; click here to access a complete history.
110
BuildZoom Score
135
Permits
- Building permit records show that Architect Mason Kirby, Inc has worked on 135 permitted projects.