Updated: May 07, 2026
Location and Projects
Address
420 MILLER AVENUE, Mill Valley, CA, 94941
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Chambers Barbara Szantho Architect
Chambers Barbara Szantho, 420 Miller Ave, Mill Valley, CA (Employee: Donald C Chambers) holds a Architect license and 2 other licenses according to the California license board.
Their BuildZoom score of 102 ranks in the top 11% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Chambers Barbara Szantho, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Chambers Barbara Szantho Services
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Chambers Barbara Szantho Contact Information
Phone Number: (916) 676-8325
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Address: 420 MILLER AVENUE, Mill Valley, CA 94941
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Chambers Barbara Szantho Mill Valley
Quality
102
89th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Chambers Barbara Szantho has a BuildZoom score of 102, which places them above 89% of 336,931 contractors in California.
Activity
|
3 projects
|
2025 |
|
1 project
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Chambers Barbara Szantho has worked on at least
6.0 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.
Pricing
|
1 project
|
$100k-$250k |
|
1 project
|
$1mil+ |
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 Chambers Barbara Szantho
This is a sample of this contractor's permits. Click here to access their complete permit history.
Interior remodel and windows
Valuation:
$1,250,000
Permit #:
BR21-161
Status:
final
Fee:
$28,035
Permit Type:
Full construction
Building Type:
N/A
Permit merged with br17-422 remodel addition
Valuation:
$350,000
Permit #:
BR18-099
Status:
final
Fee:
$19,446
Permit Type:
Construction only
Building Type:
N/A
Interior remodel windows
Valuation:
$900,000
Permit #:
BR21-025
Status:
final
Fee:
$26,928
Permit Type:
Full construction
Building Type:
N/A
Residential -convert attached garage into new 800 sq ft adu
Valuation:
N/A
Permit #:
REVAL-050069
Status:
final
Fee:
$12,281
Permit Type:
Residential
Building Type:
N/A
Residential remodel including convert basement to adu
Valuation:
$203,655
Permit #:
REVAL-048397
Status:
issued
Fee:
$5,133
Permit Type:
Residential
Building Type:
N/A
67 sf addition and covered porch extension
Valuation:
N/A
Permit #:
BD2212-0005
Status:
final
Fee:
$17,576
Permit Type:
N/A
Building Type:
N/A
Replacement single family dwelling with attached garage
Valuation:
N/A
Permit #:
BLD19-3686
Status:
issued
Fee:
$19,983
Permit Type:
N/A
Building Type:
N/A
Residential remodel including convert basement to adu
Valuation:
N/A
Permit #:
B-045177
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel two bathrooms second floor addition
Valuation:
N/A
Permit #:
B-039802
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Demolition of a 3 bedroom 2 bathroom house totaling 2, 720 sq. f
Valuation:
N/A
Permit #:
B-035294
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Upper floor remodel adding on bathroom and one bedroom and
Valuation:
N/A
Permit #:
B-035265
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential - added bathroom with (e) conditioned space
Valuation:
$20,000
Permit #:
B-041834
Status:
final
Fee:
$1,695
Permit Type:
N/A
Building Type:
N/A
Interior remodel
Valuation:
N/A
Permit #:
BR23-163
Status:
final
Fee:
$5,286
Permit Type:
Full construction
Building Type:
N/A
Residential - remodel @ master bathroom
Valuation:
N/A
Permit #:
B-039871
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New two bedroom home with attached second unit
Valuation:
N/A
Permit #:
B-036422
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel and addition
Valuation:
N/A
Permit #:
B-035772
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel main floor and expand second floor new windows doo
Valuation:
N/A
Permit #:
B-034392
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove door and exterior stair from north wall and replace w
Valuation:
N/A
Permit #:
B-035997
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Final re-val
Valuation:
$348,026
Permit #:
REVAL-000246
Status:
final
Fee:
$6,264
Permit Type:
Residential
Building Type:
N/A
Residential addition & remodel
Valuation:
N/A
Permit #:
B-038054
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
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Chambers Barbara Szantho License info
Verified License
| License # | C19454 |
| Status | Active |
| State | California |
| Type | Architect |
- BuildZoom verified this license was active as of August 2025.
Verify this license's status for Chambers Barbara Szantho at the California Architect License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 413521 |
| Status | Inactive |
| State | California |
| Type | B - GENERAL BUILDING CONTRACTOR |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Chambers Barbara Szantho at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 413521 |
| Status | Inactive |
| State | California |
| Type | General Building |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Chambers Barbara Szantho at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
102
BuildZoom Score
Bonded
| Bonded Agent | This License Filed A Contractor's Bond With |
| Bond Value | $5,000 |
58
Permits
- Building permit records show that Chambers Barbara Szantho has worked on 58 permitted projects.
Chambers Barbara Szantho Employees
CS
Chambers Barbara Szantho
Owner
DC
Donald C Chambers
Sole Owner