Updated: Jul 12, 2026
Location and Projects
Address
3900 PROSPECT AVE UNIT B, Yorba Linda, CA, 92886
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Cal Building Systems Electrician
Cal Building Systems, 3900 Prospect Ave, Yorba Linda, CA (Owned by: John Bryant Calvin) holds a Low Voltage Systems, Electrical, Fire Protection license and 1 other 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 Cal Building Systems, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Cal Building Systems Contact Information
Phone Number: (714) 993-9650
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Address: 3900 PROSPECT AVE UNIT B, Yorba Linda, CA 92886
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Cal Building Systems Yorba Linda
Quality
109
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Cal Building Systems has a BuildZoom score of 109, which places them above 95% of 336,931 contractors in California.
Activity
|
6 projects
|
2025 |
|
6 projects
|
2024 |
|
5 projects
|
2023 |
Our building permit records indicate that Cal Building Systems has worked on at least
17.0 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 Cal Building Systems mostly works on
home addition
projects.
Pricing
|
4 projects
|
< $5k |
|
1 project
|
$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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Fire alarm tenant improvement for elevator modernization. guest elevator: addition 3 new control relays. service elevator: addition 4 new control relays. 1st floor service elevator machine room: install a smoke detector and a heat detector
Valuation:
$3,500
Permit #:
F24-0119
Status:
issued
Fee:
$1,005
Permit Type:
N/A
Building Type:
N/A
Fire - fire dept (alarms sprinkler & underground)
2024-11-19
Online- sprinkler ti- staybridge suites- relocate 10 sprinkler heads and addition 4 new ones in the 2nd & 3rd floor housekeeping rooms
Valuation:
N/A
Permit #:
F24-4424
Status:
issued
Fee:
N/A
Permit Type:
Fire sprinklers t...
Building Type:
N/A
Fire alarm submittal for 5-story hotel with site improvements and parking for springhill suites by marriott - 1 fire alarm panel and (298) devices
Valuation:
$100,000
Permit #:
F22-0055
Status:
issued
Fee:
$2,149
Permit Type:
N/A
Building Type:
N/A
Fire alarm for 110-key 5-story hotel with site improvements for towneplace suites by marriott - new (1) control panel and (317) devices
Valuation:
$100,000
Permit #:
F22-0062
Status:
final
Fee:
$2,149
Permit Type:
N/A
Building Type:
N/A
Pc# 16-143689 fire scope: *** install fire alarm devices & appliances with new panel for delmas apts -new multifamily *** bdlg scope of work: construct a 120 unit apartment building over garage on 4 combined parcels
Valuation:
N/A
Permit #:
2022 696779 FE
Status:
filed
Fee:
$2,099
Permit Type:
Fire alarm system
Building Type:
N/A
E-plan fire alarm revisions to approved plans addition area smoke coverage affecting 1st and 2nd floors where fire smoke dampers are
Valuation:
N/A
Permit #:
21041-10001-30936
Status:
triage
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Commercial - fire alarm upgrade (270 devices)
Valuation:
N/A
Permit #:
F2025-5090
Status:
issued
Fee:
$2,228
Permit Type:
N/A
Building Type:
N/A
Commercial fire alarm tenant improvement (x2019-1471) atria sr living. 392 devices
Valuation:
$120,000
Permit #:
F2021-0164
Status:
final
Fee:
$2,564
Permit Type:
N/A
Building Type:
N/A
Fire alarm tenant improvement for infinite smile dental - addition (17) devices
Valuation:
$5,000
Permit #:
F22-0075
Status:
final
Fee:
$1,183
Permit Type:
N/A
Building Type:
N/A
Manufactured - fire alarm system updrade (210 devices)
Valuation:
$0
Permit #:
F2025-5115
Status:
issued
Fee:
$1,875
Permit Type:
N/A
Building Type:
N/A
Manufactured - fire alarm system updrade (210 devices)
Valuation:
$0
Permit #:
F2025-5114
Status:
issued
Fee:
$1,875
Permit Type:
N/A
Building Type:
N/A
Manufactured upgrade fire alarm system (217 devices)
Valuation:
N/A
Permit #:
F2025-5016
Status:
issued
Fee:
$1,719
Permit Type:
N/A
Building Type:
N/A
Addition addressable monitor module for kitchen hood ansul system
Valuation:
$1,000
Permit #:
FAP2024-00269
Status:
final
Fee:
$298
Permit Type:
N/A
Building Type:
N/A
Fire alarm for workday/suites # 100 and 175 tenant improvement/construction of offices and conference rooms. includes mechanical electrical and lighting
Valuation:
$5,000
Permit #:
F19-0110
Status:
issued
Fee:
$786
Permit Type:
N/A
Building Type:
N/A
Fire alarm tenant improvement for 5 devices
Valuation:
N/A
Permit #:
22041-90000-13428
Status:
final
Fee:
N/A
Permit Type:
Public safety only
Building Type:
N/A
Install a new cellular communicator for the existing fire alarm panel
Valuation:
N/A
Permit #:
PMT2023-00058
Status:
final
Fee:
$1,058
Permit Type:
N/A
Building Type:
N/A
Fire alarm tenant improvement workday (wellness center) suite 150 & 160 install 22 new devices no new panel
Valuation:
$5,000
Permit #:
F21-0043
Status:
final
Fee:
$1,078
Permit Type:
N/A
Building Type:
N/A
Alteration of existing fire sprinkler system due to interior building improvements.- 22 new/relocated heads 3 relocated
Valuation:
N/A
Permit #:
PMT2019-01739
Status:
final
Fee:
$964
Permit Type:
N/A
Building Type:
N/A
Commercial fire alarm tenant improvement with 53 devices
Valuation:
N/A
Permit #:
PC2023-2503
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Fire alarm for workday interior including demolish of existing space conference room break room new walls doors millwork finishes mep and flooring
Valuation:
$5,000
Permit #:
F18-0073
Status:
issued
Fee:
$780
Permit Type:
N/A
Building Type:
N/A
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Cal Building Systems Reviews
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Verified License
BuildZoom confirmed this contractor's license
Cal Building Systems License info
Verified License
| License # | 521087 |
| Status | Active |
| State | California |
| Type | Low Voltage Systems, Electrical, Fire Protection |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Cal Building Systems at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 0083713 |
| Status | Inactive |
| State | Nevada |
| Type | C 41 Fire Protection |
| Business Type | Sole Ownership |
- According to the Nevada State Contractors 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 Cal Building Systems at the Nevada State Contractors Board.
This is a sample of licensing data; click here to access a complete history.
109
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Everest National Insurance Company |
133
Permits
- Building permit records show that Cal Building Systems has worked on 133 permitted projects.
Cal Building Systems Employees
CB
Calvin, John Bryant
Treasurer Director
HT
Hassler, John Thomas
Secretary Director
JC
John Bryant Calvin
Owner
JH
John Thomas Hassler
Ceo / President
RS
Russell Scott Stafford
Rme
SS
Stafford, Russell Scott
President Director