Updated: Dec 22, 2025
Location and Projects
Address
1370 TRANCAS ST #173, Napa, CA, 94558
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Poon Bill Architect
Their BuildZoom score of 103 ranks in the top 10% of 336,931 California licensed contractors.
If you are thinking of hiring Poon Bill, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Poon Bill Services
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Poon Bill Contact Information
Address: 1370 TRANCAS ST #173, Napa, CA 94558
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Poon Bill Napa
Quality
103
90th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Poon Bill has a BuildZoom score of 103, which places them above 90% of 336,931 contractors in California.
Activity
|
5 projects
|
2025 |
|
3 projects
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that Poon Bill 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
|
4 projects
|
Home Additions |
Analyzing permits over the last 4 years shows that Poon Bill mostly works on
home addition
projects.
Pricing
|
1 project
|
$5k-$20k |
|
4 projects
|
$250k-$500k |
|
1 project
|
$500k-$1mil |
The typical size of their permits is approximately $325,000. 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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Addition: rebuild/enlarge attached deck alterations: remove stair & floor opening & convert foyer at lower level to unconditioned. relocate kitchen & laundry. remodel 2 bathrooms & living room. relocate space conditioning & replace all ducts. relocate/replace water heating. resurface driveway
Valuation:
$450,000
Permit #:
S24-00842-RES
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
2020 lnu fire replace dwelling completely destroyed by 2020 fire with manufactured dwelling on a site-built foundation
Valuation:
$300,000
Permit #:
BR25-01603-RPL
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
2020 lnu fire replace dwelling completely destroyed by 2020 fire with manufactured dwelling on a site-built foundation
Valuation:
$300,000
Permit #:
S25-01319-RES
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Code violation- main dwelling alteration- substandard conditions: demolish dilapidated lower deck & stair. demolish leaning retaining wall & soften slope. relocate shed a. replace balcony guard & skirting; replace abutting stair. repl. front stair guard & handrail. demolish above-ground pool & deck
Valuation:
$10,000
Permit #:
BR24-01938-ALT
Status:
expired
Fee:
$1,628
Permit Type:
N/A
Building Type:
N/A
Remodel (e) 2nd floor kitchen baths (2) enclose entry and addition (n) bathroom @ 1st floor; drywall to (e) garage and remodel (e) living dining. seismic upgrade
Valuation:
$360,000
Permit #:
202306129848
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Code violation- substandard conditions: demolish dilapidated lower deck & stair. demolish leaning retaining wall & soften slope. relocate shed a. replace balcony guard & skirting; replace abutting stair. repl. front stair guard & handrail. demolish above-ground pool & deck
Valuation:
$10,000
Permit #:
S24-01624-RES
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel kitchen & 2.5 bahrooms replace electrical. subpanel
Valuation:
N/A
Permit #:
BD2506-0076
Status:
issued
Fee:
$4,594
Permit Type:
With structural
Building Type:
N/A
Remove elevated deck and replace 98 sf
Valuation:
N/A
Permit #:
BD2503-0010
Status:
final
Fee:
$1,087
Permit Type:
New
Building Type:
N/A
Remove elevated deck and replace like in kind 98 sf
Valuation:
N/A
Permit #:
BD2503-0009
Status:
final
Fee:
$1,087
Permit Type:
Replacement
Building Type:
N/A
Installation of a tesla ev charger with a dedicated 60 amp circuit
Valuation:
$1,008
Permit #:
B2021-0286
Status:
final
Fee:
$114
Permit Type:
Residential
Building Type:
N/A
Construct attached adu within (e) 2 story & extended rear. horizontal addition to both floors. replacce driveways. extend extension stair to access usable open space at rear yard
Valuation:
$525,000
Permit #:
202210194645
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
3rd story vertical addition & 3-story horizontal rear addition for (n) living space including bedroosm bathrooms family room & roof deck
Valuation:
$481,774
Permit #:
201304225129
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
New single family dwelling w/attached accessory dwelling unit. total 4310 sqft
Valuation:
$300,000
Permit #:
B2014-01391
Status:
Issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Legalize & develop ground floor including library playroom & bathroom. new roof deck & exterior stair alter sitting room replace & addition windows repair rotted siding addition shower relocate washer/dryer replace furnace & water heater at rear of building
Valuation:
$60,000
Permit #:
201308124111
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Revision shabu house restaurant tenant improvement
Valuation:
$386,400
Permit #:
B17-2060
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Shabu house restaurant tenant improvement
Valuation:
$386,400
Permit #:
B17-0605
Status:
final
Fee:
$10,288
Permit Type:
N/A
Building Type:
N/A
Design review addition to child care center request for an administrative design review for a 257 sq ft addition to the friends of river childcare services building on a 7921 sq ft parcel
Valuation:
$0
Permit #:
ADR06-0023
Status:
DONE
Fee:
$740
Permit Type:
N/A
Building Type:
N/A
Commercial porch conversion & remodel of offices new trash enclosure new parking lot rpl 50% of foundation 12/5/07 temp occupancy
Valuation:
N/A
Permit #:
BLD06-6472
Status:
final
Fee:
$5,436
Permit Type:
N/A
Building Type:
N/A
Basement conversion and remodel master bedroom electrical meter upgrade & relocation
Valuation:
N/A
Permit #:
BLD05-1930
Status:
final
Fee:
$2,477
Permit Type:
N/A
Building Type:
N/A
Convert (e) storage building to dwelling/add 182 sf
Valuation:
N/A
Permit #:
BLD01-5707
Status:
complete
Fee:
$1,252
Permit Type:
N/A
Building Type:
N/A
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Poon Bill Reviews
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Recent Buildzoom Projects
Poon Bill License info
License Not Verified
| License # | C17475 |
| Status | Active |
| State | California |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of Poon Bill with the California Architect License Board
This is a sample of licensing data; click here to access a complete history.
103
BuildZoom Score
17
Permits
- Building permit records show that Poon Bill has worked on 17 permitted projects.
Poon Bill Employees
PB
Poon Bill
Owner