Updated: May 24, 2026
Location and Projects
Address
1800 HILLCREST ROAD, San Pablo, CA, 94806
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A-1 Building Service Company Construction
A-1 Building Service Company, 1800 Hillcrest Rd, San Pablo, CA (Employees: Amarjeet Singh, Amarjeet Singh, and Manoj Tripathi) holds a Electrical, General Building license and 5 other licenses according to the California license board.
Their BuildZoom score of 99 ranks in the top 15% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring A-1 Building Service Company, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
A-1 Building Service Company Services
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A-1 Building Service Company Contact Information
Phone Number: (925) 984-1093
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Address: 1800 HILLCREST ROAD, San Pablo, CA 94806
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A-1 Building Service Company San Pablo
Quality
99
85th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
A-1 Building Service Company has a BuildZoom score of 99, which places them above 85% of 336,931 contractors in California.
Activity
|
1 project
|
2023 |
Our building permit records indicate that A-1 Building Service Company has worked on at least
1.0 project 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
|
< $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.
Building Permits by A-1 Building Service Company
This is a sample of this contractor's permits. Click here to access their complete permit history.
Tenant improvement for sourdough & co to include removal of existing wall remove sales/kitchen counter remove prep sink addition new counter type ii hood new lighting in dining area and power for new kitchen equipment
Valuation:
$35,000
Permit #:
B22-0241
Status:
final
Fee:
$2,480
Permit Type:
N/A
Building Type:
N/A
(p) - plumbing - 3+ residential units or commercial (building)
2019-01-25
Plumbing for suite#1: tenant improvement. for new health clinic osita health clinic including 3 exam rooms office blood test room break room in vacant. (e) ada restroom to remain. no exterior work. zc181344 10/15/18 addition one addition sink to scope
Valuation:
N/A
Permit #:
P1802694
Status:
final
Fee:
$518
Permit Type:
N/A
Building Type:
N/A
Need temporary power 120/240 v 1 phase 200amp ** per garth robertshaw and keith denison**
Valuation:
$1,500
Permit #:
BISUB22-04145
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
(m) - mechanical - 3+ residential units or commercial (building)
2019-02-01
Mechanical for suite#1: tenant improvement. for new health clinic osita health clinic including 3 exam rooms office blood test room break room in vacant. (e) ada restroom to remain. no exterior work. zc181344
Valuation:
N/A
Permit #:
M1802243
Status:
final
Fee:
$273
Permit Type:
N/A
Building Type:
N/A
(e) - electrical - 3+ residential units or commercial (building)
2019-01-25
Electrical for suite#1: tenant improvement. for new health clinic osita health clinic including 3 exam rooms office blood test room break room in vacant. (e) ada restroom to remain. no exterior work. zc181344
Valuation:
N/A
Permit #:
E1803765
Status:
final
Fee:
$303
Permit Type:
N/A
Building Type:
N/A
Replace existing meter box with 2 new meter boxes. one for the main house one for new adu 2nd unit
Valuation:
N/A
Permit #:
BIE21-004913
Status:
final
Fee:
$133
Permit Type:
N/A
Building Type:
N/A
(p) - plumbing - 3+ residential units or commercial (building)
2018-08-14
Plumbing related to space #3: tenant improvement. for new coffee shop its a grind coffee house in building #4. shell construction under b1600966
Valuation:
N/A
Permit #:
P1801001
Status:
final
Fee:
$919
Permit Type:
N/A
Building Type:
N/A
(m) - mechanical - 3+ residential units or commercial (building)
2018-08-14
Mechanical related to space #3: tenant improvement. for new coffee shop its a grind coffee house in building #4. shell construction under b1600966
Valuation:
N/A
Permit #:
M1800925
Status:
final
Fee:
$729
Permit Type:
N/A
Building Type:
N/A
(e) - electrical - 3+ residential units or commercial (building)
2018-08-07
Electrical related to space #3: tenant improvement. for new coffee shop its a grind coffee house in building #4. shell construction under b1600966
Valuation:
N/A
Permit #:
E1801438
Status:
final
Fee:
$669
Permit Type:
N/A
Building Type:
N/A
Expedited - suite 20-type 1 cut-in hood- see delta -4 on plan set. added scope of work- not included on com-1717553 (with fryer and griddle)
Valuation:
$10,000
Permit #:
COM-1803593
Status:
final
Fee:
$781
Permit Type:
N/A
Building Type:
N/A
Tenant improvement of 1, 427 sq ft scope of work to include: 1) issue certificate of occupancy 2) addition new non-bearing walls to create exam rooms office reception/waiting area (e) hc toilet prep area surgery room lab storage etc. 3) duct modification of (e) heating & ventilation
Valuation:
$80,000
Permit #:
2014 033153 CI
Status:
final
Fee:
N/A
Permit Type:
Office
Building Type:
N/A
Remodel of backroom into kitchen at an existing convenience store and gas station. backroom plumbing to be redesigned and type-i hood fryer. hand sink and prep added
Valuation:
N/A
Permit #:
BIT16-009490
Status:
final
Fee:
$1,685
Permit Type:
N/A
Building Type:
N/A
Expedited - otc revision to com-1803593 - change equipment type for hood system correction notice from field
Valuation:
N/A
Permit #:
COM-1806291
Status:
complete
Fee:
$246
Permit Type:
N/A
Building Type:
N/A
Ti-remove interior non structural walls; addition new walls within existing (petcura inc.)
Valuation:
$70,000
Permit #:
TI150019
Status:
final
Fee:
$1,352
Permit Type:
Add/alter commercial
Building Type:
N/A
New 970 square foot subway sandwiches (bakery rate) - sewer demand fees. codding did not submit a new listing of all tenants in building "b". did not allow tenant any sewer credits. tenant purchased 1.1 esu's at bakery rate. new notice & acknowledgment sent to property owner.
Valuation:
$0
Permit #:
U03-0574
Status:
ISSUED
Fee:
$4,147
Permit Type:
N/A
Building Type:
N/A
Need temporary power 120/240 v 1 phase 200amp ** per garth robertshaw and keith denison**
Valuation:
$1,500
Permit #:
BIEC23-000756
Status:
final
Fee:
$175
Permit Type:
N/A
Building Type:
N/A
Expedited - revision to com-1717553 revised floor plan and equipment schedule
Valuation:
N/A
Permit #:
COM-1800464
Status:
complete
Fee:
$234
Permit Type:
N/A
Building Type:
N/A
Add "extra mile" apc to (e) monument sign. instl bldg sign"extra mile" add (2) chevron word mark sig
Valuation:
$0
Permit #:
201502219
Status:
ISSUED
Fee:
$190
Permit Type:
N/A
Building Type:
N/A
(e) - electrical - 3+ residential units or commercial (building)
2014-07-03
Tenant improvement. to alter for subway deli in suite #c electrical: addition 2 dedicated circuit feeders and receptacles for kitchen equipment
Valuation:
N/A
Permit #:
E1400375
Status:
final
Fee:
$163
Permit Type:
N/A
Building Type:
N/A
Jersey mikes - tenant improvement. with all trades
Valuation:
$55,000
Permit #:
1508-0269
Status:
final
Fee:
$22,343
Permit Type:
Non-residential
Building Type:
N/A
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A-1 Building Service Company Reviews
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Verified License
BuildZoom confirmed this contractor's license
A-1 Building Service Company License info
Verified License
| License # | 1037932 |
| Status | Active |
| State | California |
| Type | Electrical, General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for A-1 Building Service Company at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 974206 |
| Status | Active |
| City | Vallejo |
| Type | Contractor |
| Business Type | Sole Ownership |
- When BuildZoom last verified this license, it had an expiration date of June, 2014. Check the current license status of A-1 Building Service Company with the The City of Vallejo, CA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 974206 |
| Status | Inactive |
| State | California |
| Type | General Building, Electrical, Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Sole Ownership |
- 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 A-1 Building Service Company at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 1007685 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- 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 A-1 Building Service Company at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 988534 |
| Status | Inactive |
| State | California |
| Type | General Building, Electrical, Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Sole Ownership |
- 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 A-1 Building Service Company at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 480739 |
| Status | Inactive |
| State | California |
| Type | General Building, Electrical, Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Sole Ownership |
- 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 A-1 Building Service Company at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
99
BuildZoom Score
Bonded
| Bonded Agent | Wesco Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Norguard Insurance Company |
102
Permits
- Building permit records show that A-1 Building Service Company has worked on 102 permitted projects.
A-1 Building Service Company Employees
AS
Amarjeet Singh
Sole Owner
AS
Amarjeet Singh
Ceo/President
MT
Manoj Tripathi
Ceo / President
MT
Manoj Tripathi
Ceo / President
RB
Randhir Singh Bajwa
Sole Owner