Updated: Oct 03, 2025
Location and Projects
Address
6C St, Petaluma, CA, 94952
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Mahoney Architects & Interiors Photos
Mahoney Architects & Interiors
Mahoney Architects & Interiors is an award-winning architectural firm specializing in residential work throughout the Bay Area. The firm was established in 1986 by lead architect Colleen Mahoney. Colleen's work has been recognized by many organizations and publications for excellence. For a portfolio of work please look at www.Mahoney-Architects.com or on Houzz.com
From BuildZoom: Mahoney Architects & Interiors, 6 C St, Petaluma, CA (Owned by: Colleen Mahoney) holds a Architect license according to the California license board.
Their BuildZoom score of 109 ranks in the top 5% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Mahoney Architects & Interiors, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Mahoney Architects & Interiors Services
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Mahoney Architects & Interiors Contact Information
Phone Number: (415) 517-0912
Address: 6C St, Petaluma, CA 94952
Mahoney Architects & Interiors Petaluma
Quality
109
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Mahoney Architects & Interiors has a BuildZoom score of 109, which places them above 95% of 336,931 contractors in California.
Activity
|
2 projects
|
2025 |
|
2 projects
|
2024 |
|
5 projects
|
2023 |
Our building permit records indicate that Mahoney Architects & Interiors has worked on at least
9.0 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
|
3 projects
|
Home Additions |
Analyzing permits over the last 4 years shows that Mahoney Architects & Interiors mostly works on
home addition
projects.
Pricing
|
2 projects
|
$100k-$250k |
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 Mahoney Architects & Interiors
This is a sample of this contractor's permits. Click here to access their complete permit history.
Single family dwelling addition of a new bathroom 89 sf addition a new bathroom at the rear of an existing house adjacent to the existing main bedroom
Valuation:
N/A
Permit #:
BLD25-1721
Status:
issued
Fee:
$1,906
Permit Type:
N/A
Building Type:
N/A
Floor plan has been revised to reduce the scope of work for the kitchen remodel. existing entry hall door and closet are to remain intact. window and door openings have been revised on the north and east elevations. this submittal includes new versions of the sheet a5.1 kitchen plan and elevations new sheet e1 electrical plan and revisions on a2.1 floor plan a3.1 exterior elevations a... see more
Valuation:
N/A
Permit #:
BLD22-8462.R02
Status:
complete
Fee:
$229
Permit Type:
N/A
Building Type:
N/A
Adding a garage loft which is open to garage below and its area is less than 1/3 of the garage of the garage it has one light and one receptacle. also included are minor revisions including grab bar and towel bar locations sound mitigation notes and details cabinetry design elect outlet and light locations
Valuation:
N/A
Permit #:
BLD21-5310.R01
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
During construction work under the issued permit proposed new beams as shown on approved plan sheet s2.1 were reconfigured to be sistered to existing beams discovered during demolition. details 6/s3.1 and 7/s3.1 were revised to show the new beam configuration and to show the alternate grk fastener option. two construction bulletins were issued by the structural engineer along with rev... see more
Valuation:
N/A
Permit #:
BLD22-3137.R01
Status:
complete
Fee:
$452
Permit Type:
N/A
Building Type:
N/A
Interior remodel of two bathrooms; enclosure of existing 24 sq. ft. entry porch; construction of new porch and ramp to front door; new landing deck at rear sliding glass door; full roof replacement; furnace replacement. main panel upgrade
Valuation:
$38,200
Permit #:
BLDR-2022-0723
Status:
issued
Fee:
$2,382
Permit Type:
N/A
Building Type:
N/A
Kitchen windows door roof
Valuation:
$200,000
Permit #:
BR21-245
Status:
issued
Fee:
$6,234
Permit Type:
Full construction
Building Type:
N/A
Interior remodel and window replacement new deck new front pavement
Valuation:
$175,000
Permit #:
BLDR-2024-0115
Status:
issued
Fee:
$6,066
Permit Type:
N/A
Building Type:
N/A
Residential remodel (1 152 sf) & addition to existing deck (313 sf)
Valuation:
N/A
Permit #:
BLD22-8462
Status:
final
Fee:
$4,174
Permit Type:
N/A
Building Type:
N/A
Sfd_ interior remodel of kitchen and master bathroom; repair of existing wood deck
Valuation:
N/A
Permit #:
BLD22-3137
Status:
final
Fee:
$2,089
Permit Type:
N/A
Building Type:
N/A
Addition to lower floor bathroom & pool
Valuation:
$320,000
Permit #:
BR16-072
Status:
final
Fee:
$8,555
Permit Type:
Full construction
Building Type:
N/A
Upgrade and relocate main electrical panel electrical meter and sub-panel
Valuation:
N/A
Permit #:
BLD22-8462.R01
Status:
complete
Fee:
$93
Permit Type:
N/A
Building Type:
N/A
Remodel kit bathroom remove chimney
Valuation:
$95,000
Permit #:
BR17-363
Status:
final
Fee:
$3,767
Permit Type:
Full construction
Building Type:
N/A
Construction of new conditioned art studio with loft
Valuation:
N/A
Permit #:
BLD20-7482
Status:
final
Fee:
$4,871
Permit Type:
N/A
Building Type:
N/A
Addition and remodel
Valuation:
$200,000
Permit #:
BR16-132
Status:
final
Fee:
$6,301
Permit Type:
Full construction
Building Type:
N/A
Interior remodel
Valuation:
$130,000
Permit #:
CC18-028
Status:
final
Fee:
$4,326
Permit Type:
Construction and ...
Building Type:
N/A
Addition remodel alteration
Valuation:
$200,000
Permit #:
BPA15-246
Status:
final
Fee:
$6,259
Permit Type:
Full construction
Building Type:
N/A
Kitchen, 2 baths & powder room remodel
Valuation:
N/A
Permit #:
P1711-022
Status:
final
Fee:
$125
Permit Type:
Alter-sfd
Building Type:
N/A
Kitchen, 2 baths & powder room remodel
Valuation:
N/A
Permit #:
M1711-026
Status:
final
Fee:
$125
Permit Type:
Alter-sfd
Building Type:
N/A
Kitchen, 2 baths & powder room remodel
Valuation:
N/A
Permit #:
E1711-020
Status:
final
Fee:
$125
Permit Type:
Alter-sfd
Building Type:
N/A
Kitchen, 2 baths & powder room remodel
Valuation:
N/A
Permit #:
B1710-168
Status:
final
Fee:
$3,886
Permit Type:
Alter-sfd
Building Type:
N/A
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Verified License
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Mahoney Architects & Interiors License info
Verified License
| License # | C15359 |
| Status | Active |
| State | California |
| Type | Architect |
- BuildZoom verified this license was active as of October 2025.
Verify this license's status for Mahoney Architects & Interiors at the California Architect License Board.
This is a sample of licensing data; click here to access a complete history.
109
BuildZoom Score
47
Permits
- Building permit records show that Mahoney Architects & Interiors has worked on 47 permitted projects.
Mahoney Architects & Interiors Employees
Colleen Mahoney
Owner
MA
Mahoney Colleen Ann
Owner