Updated: May 26, 2026
Location and Projects
Address
P O BOX 2364, Rancho Santa Fe, CA, 92067
Use our bidding system to
request a quote
William F Roskowski Construction
William F Roskowski, Rancho, Po Box 2364, Rancho Santa Fe, CA (Owned by: William Frank Roskowski) holds a General Building license and 1 other license according to the California license board.
Their BuildZoom score of 94 ranks in the top 24% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring William F Roskowski, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
William F Roskowski Services
Start a project today:
William F Roskowski Contact Information
Phone Number: (858) 756-6861
Edit
Address: P O BOX 2364, Rancho Santa Fe, CA 92067
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
William F Roskowski Rancho Santa Fe
Quality
94
76th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
William F Roskowski has a BuildZoom score of 94, which places them above 76% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
Our building permit records indicate that William F Roskowski has worked on at least
1.0 project over the past year.
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
|
< $5k |
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.
Trade permit for residential water heater - mep plumbing
2025-06-16
Replace 2 water heaters
Valuation:
$4,000
Permit #:
MEPR-033375-2024
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New primary residential structure single family dwelling or mh - plan check-permit
2004-02-17
Office:sm cross street: artesian rd tb: 1169 a3 description of work: 918 sq ft single story single family dwelling air conditioning & fs 280 sq ft porches 200 amp temp power. 05/12/06 this is now a second dwelling...vmd/dlf 5/26/05 - this is a main dwelling not a 2nd dwelling see c of a. 5/31/05 - plan change - customer change scope to main dwelling. see condiotions of approval. old s... see more
Valuation:
$84,169
Permit #:
PDS2004-1003-20040159
Status:
complete
Fee:
$2,389
Permit Type:
N/A
Building Type:
N/A
New residential detached accessory structure - plan check-permit
2003-10-17
Office:sm cross street: artesian rd tb: 1169 a3 description of work: 918 sq ft single story 2nd dwelling air conditioning & fs 280 sq ft porches 200 amp temp power. this is a main dwelling not a 2nd dwelling original p/c 1001-20031078 for main single family dwelling expired therefore this permit is considered a main dwelling (1st structure on lot) see c of a
Valuation:
$84,169
Permit #:
PDS2003-1001-20031820
Status:
complete
Fee:
$883
Permit Type:
N/A
Building Type:
N/A
Residential alteration or addition - plan check-permit
2005-07-13
Cross street:artesian rd description of work:outdoor fireplace (wood burning) w 6 wall
Valuation:
$1,850
Permit #:
PDS2005-1005-20050676
Status:
complete
Fee:
$234
Permit Type:
N/A
Building Type:
N/A
Deck repair and new guardrail
Valuation:
$2,400
Permit #:
A-12118
Status:
issued
Fee:
$142
Permit Type:
N/A
Building Type:
N/A
T i - st malo center - construct new arched opening
Valuation:
$90,000
Permit #:
BLDG13-0353
Status:
withdrawn
Fee:
$0
Permit Type:
Non-struct 400
Building Type:
N/A
Similar Contractors See more
195
BZ Score
$16.5K
Avg Project
-
Projects
191
BZ Score
$21.2K
Avg Project
-
Projects
163
BZ Score
$15K
Avg Project
-
Projects
William F Roskowski Reviews
BuildZoom hasn't received any reviews for William F Roskowski. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
William F Roskowski License info
Verified License
| License # | 345564 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for William F Roskowski at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 345564 |
| Status | Inactive |
| City | Oceanside |
| Type | Contractor |
| Business Type | Sole Ownership |
- According to the City of Oceanside, CA, 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 William F Roskowski at the City of Oceanside, CA.
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
William F Roskowski Employees
WR
William Frank Roskowski
Owner