Updated: Jul 02, 2026
Location and Projects
Address
23 Dorset Ln, Mill Valley, CA, 94941
Use our bidding system to
request a quote
Plonowski Architects & Builders, Inc
Plonowski Architects & Builders, Inc, 23 Dorset Ln, Mill Valley, CA holds a General Building license and 2 other licenses 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 Plonowski Architects & Builders, Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Plonowski Architects & Builders, Inc Services
Start a project today:
Plonowski Architects & Builders, Inc Contact Information
Address: 23 Dorset Ln, Mill Valley, CA 94941
Plonowski Architects & Builders, Inc Mill Valley
Quality
109
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Plonowski Architects & Builders, Inc has a BuildZoom score of 109, which places them above 95% of 336,931 contractors in California.
Activity
|
6 projects
|
2025 |
|
1 project
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Plonowski Architects & Builders, Inc 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.
Pricing
|
2 projects
|
$5k-$20k |
|
1 project
|
$20k-$50k |
|
2 projects
|
$100k-$250k |
|
2 projects
|
$250k-$500k |
The typical size of their permits is approximately $50,000. 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 Plonowski Architects & Builders, Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replace in kind 12 existing wood double hung windows at the front facade. new replacement windows shall be painted wood framed double hung double glazed windows to match existing
Valuation:
$102,000
Permit #:
202506057992
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Interior remodeling to building a new 1-bedroom unit at 1st floor. (legal unit under density) new unit to include new kitchen living and closets and laundry closet
Valuation:
$120,163
Permit #:
202308174696
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Remove and rebuild in kind existing front stairs and entryp
Valuation:
$28,000
Permit #:
B2503-226
Status:
final
Fee:
$1,949
Permit Type:
Alter-sfd
Building Type:
N/A
Remove and rebuild in kind existing front stairs and entryp
Valuation:
$28,000
Permit #:
B2503-226
Status:
final
Fee:
$1,949
Permit Type:
Alter-sfd
Building Type:
N/A
Repair e) front roof deck. remove e) tile & concrete slab. install new waterproof decking & new matel guard
Valuation:
$18,000
Permit #:
202506128630
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Repair e) front roof deck. remove e) tile & concrete slab. install new waterproof decking & new matel guard
Valuation:
$18,000
Permit #:
202506128630
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Remodel existing 2nd floor bathroom
Valuation:
$50,000
Permit #:
B-050561
Status:
canceled
Fee:
$891
Permit Type:
N/A
Building Type:
N/A
Remodel existing 2nd floor bathroom
Valuation:
$50,000
Permit #:
B-050561
Status:
canceled
Fee:
$891
Permit Type:
N/A
Building Type:
N/A
Reframe garage door opening install nw overhead door install new trench drain. remove extg 2nd f. interior walls install n post & beams. remodel kitchen with n cabs counter elect lighting $ plumbing install n washer/dryer at 3rd fl. replace e clay f.p. flue w/new metal pipe
Valuation:
$52,000
Permit #:
201812289330
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Remodel kitchen; remove 3 linear feet of non-bearing wall
Valuation:
$40,000
Permit #:
171682
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Tear-off and reroof approx. 35 sq. class a comparable. shingles
Valuation:
N/A
Permit #:
B2406-025
Status:
final
Fee:
N/A
Permit Type:
Reroof-sfd
Building Type:
N/A
Unit 580 & 582: in each unit remodel (e) kitchen in-kind install new cabinets counter top new appliances new electrical & lighting new sink/faucet. no walls moved/removed/added/infilled. all (e) layouts to remain unchanged
Valuation:
$42,000
Permit #:
201707141968
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Remod addtn deck struc windw
Valuation:
$375,000
Permit #:
165717
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Upgrade existing fire alarm system per new ordinance 165-16(with 75 dba at all living area) per section 1103.7.6 (2016 sffc with original system was installed under 200804078967). addition 78 horns
Valuation:
$15,600
Permit #:
201812319378
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Remodel master + bathroom lower level
Valuation:
$25,000
Permit #:
BR16-345
Status:
final
Fee:
$1,267
Permit Type:
Full construction
Building Type:
N/A
Residential remodel - kitchen remodel remove wall post, bea
Valuation:
N/A
Permit #:
B-041433
Status:
final
Fee:
N/A
Permit Type:
Additions/remodels
Building Type:
N/A
Reroof
Valuation:
$14,000
Permit #:
BR17-394
Status:
final
Fee:
$799
Permit Type:
Reroof
Building Type:
N/A
Interior remodeling and window replacement
Valuation:
$400,000
Permit #:
B2407-044
Status:
final
Fee:
$12,576
Permit Type:
Alter-sfd
Building Type:
N/A
Student bathroom remodel
Valuation:
N/A
Permit #:
BC23-012
Status:
issued
Fee:
$5,034
Permit Type:
Remodel/alteration
Building Type:
N/A
Remodel 3/f: bathroom including: 3 new ckts new gfi outlet new exhaust fan new lighting new electrical raditant in-floor heating
Valuation:
N/A
Permit #:
E201411104300
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Plonowski Architects & Builders, Inc Reviews
BuildZoom hasn't received any reviews for Plonowski Architects & Builders, Inc. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Hiring a contractor?
Verified License
BuildZoom confirmed this contractor's license
Plonowski Architects & Builders, Inc License info
Verified License
| License # | 649916 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Plonowski Architects & Builders, Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | C23049 |
| Status | Active |
| State | California |
| Type | Architect |
| Business Type | Corporation |
- BuildZoom has not verified this license since May, 2025.
Verify this license's status for Plonowski Architects & Builders, Inc at the California Architect License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 880131 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Plonowski Architects & Builders, Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
109
BuildZoom Score
Bonded
| Bonded Agent | Business Alliance Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Clear Spring Property & Casualty Company |
46
Permits
- Building permit records show that Plonowski Architects & Builders, Inc has worked on 46 permitted projects.