Updated: Jul 28, 2026
Location and Projects
Address
1700 Montgomery St, San Francisco, CA, 94111
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Solarunion
Their BuildZoom score of 0 does not rank in the top 50% of California contractors.
If you are thinking of hiring Solarunion, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Solarunion Services
Start a project today:
Solarunion Contact Information
Phone Number: (888) 363-9373
Address: 1700 Montgomery St, San Francisco, CA 94111
Solarunion San Francisco
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are Solarunion, log in and update your license info in the “Edit Profile” tab.
Activity
|
16 projects
|
2025 |
|
64 projects
|
2024 |
|
115 projects
|
2023 |
Our building permit records indicate that Solarunion has worked on at least
195.0 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
|
12 projects
|
Home Additions |
|
5 projects
|
New Constructions |
|
176 projects
|
Solar installations |
Analyzing permits over the last 4 years shows that Solarunion mostly works on
solar installation
and home addition
projects.
Pricing
|
1 project
|
< $5k |
|
20 projects
|
$5k-$20k |
|
26 projects
|
$20k-$50k |
|
8 projects
|
$50k-$100k |
The typical size of their permits is approximately $23,220. 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.
Photovoltaic plan #6356 r1 32 photovoltaic modules x 400 watts 1000 =12.8 kw. (batteries and new subpanel) please notify district sffd inspector at the start of work 415.558.3369
Valuation:
N/A
Permit #:
E202501309692
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Photovoltaic plan #6592 25 photovoltaic modules x 410 watts 1000 = 10.25 kw. (batteries and new subpanel) please notify district sffd inspector at the start of work 415.558.3369
Valuation:
N/A
Permit #:
E202501309693
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Photovoltaic plan #6860 10 photovoltaic modules x 405 watts 1000 = 4.05 kw. (batteries) please notify district sffd inspector at the start of work 415.558.3369
Valuation:
N/A
Permit #:
E202501309695
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Photovoltaic solar plan# 6707: 8 photovoltaic modules: 405 watts per module: 3.24 system (dc) kw. batteries new subpanel. addition plan review fee. addition 1 cat3 fee(s) 225a. *** please notify district fire inspector at the start of work 415-558-3354. ***
Valuation:
N/A
Permit #:
E202411128159
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Photovoltaic solar plan# 6708: 8 photovoltaic modules: 405 watts per module: 3.24 system (dc) kw. batteries. addition plan review fee. addition 1 cat3 fee(s) 225a. *** please notify district fire inspector at the start of work 415-558-3354. ***
Valuation:
N/A
Permit #:
E202411128152
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of roof mounted 11.20kw solar photovoltaic system “it is the permittee’s obligation and responsibility to ensure that all work associated with this permit complies with all current orders of the health officer of the county of san mateo related to the novel coronavirus disease 2019 (covid-19). the county of san mateo assumes no responsibility for work performed by permitt... see more
Valuation:
N/A
Permit #:
BLD2022-02873
Status:
final
Fee:
$555
Permit Type:
N/A
Building Type:
N/A
Installation of roof mounted 3.2kw solar photovoltaic system consisting of 8 panels and 1 inverter 200a main service panel upgrade - 8 roof-mounted solar photovoltaic modules 400 watts per module 1 interactive inverter total no. of rating 3.8 kw
Valuation:
N/A
Permit #:
EW202303290042
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of roof mounted 3.2kw solar photovoltaic system consisting of 8 panels and 1 inverter 200a main service panel upgrade - 8 roof-mounted solar photovoltaic modules 400 watts per module 1 interactive inverter total no. of rating 3.8 kw
Valuation:
N/A
Permit #:
EW202303290041
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of roof mounted 3.2kw solar photovoltaic system consisting of 8 panels and 1 inverter 200a main service panel upgrade - 8 roof-mounted solar photovoltaic modules 400 watts per module 1 interactive inverter total no. of rating 3.8 kw
Valuation:
N/A
Permit #:
EW202303290040
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Photovoltaic solar plan# 6506-r1: 15 photovoltaic modules: 405 watts per module: 6.075 system (dc) kw. batteries service upgrade. addition plan review fee. *** please notify district fire inspector at the start of work 415-558-3316. ***
Valuation:
N/A
Permit #:
E202411128156
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of roof mounted 3.2kw solar photovoltaic system consisting of 8 panels and 1 inverter new subpanel and ev charger - 8 roof-mounted solar photovoltaic modules 400 watts per module 1 interactive inverter total no. of rating 3.8 kw
Valuation:
N/A
Permit #:
EW202303290044
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of solar photovoltaic system reviewed and approved under permit 202211216925. [6kw roof mounted solar photovoltaic system consisting of 15 - panasonic evpv400h photovoltaic modules and 1 solaredge se6000h-us inverter]
Valuation:
N/A
Permit #:
EW202403147368
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of roof mounted 4kw solar photovoltaic system consisting of 10 solar panel and 1 inverter - 10 roof-mounted solar photovoltaic modules 400 watts per module 1 interactive inverter total no. of rating 3.8 kw
Valuation:
N/A
Permit #:
EW202305101037
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of roof mounted 3.2kw solar photovoltaic system consisting of 8 panels and 1 inverter - 8 roof-mounted solar photovoltaic modules 400 watts per module 1 interactive inverter total no. of rating 3.8 kw
Valuation:
N/A
Permit #:
EW202401266392
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of roof mounted 3.2kw solar photovoltaic system consisting of 8 panels and 1 inverter - 8 roof-mounted solar photovoltaic modules 400 watts per module 1 interactive inverter total no. of rating 3.8 kw
Valuation:
N/A
Permit #:
EW202401266391
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of roof mounted 3.2kw solar photovoltaic system consisting of 8 panels and 1 inverter - 8 roof-mounted solar photovoltaic modules 400 watts per module 1 interactive inverter total no. of rating 3.8 kw
Valuation:
N/A
Permit #:
EW202401266390
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of roof mounted 4kw solar photovoltaic system consisting of 10 modules and 1 inverter - 10 roof-mounted solar photovoltaic modules 400 watts per module 1 interactive inverter total no. of rating 3.8 kw
Valuation:
N/A
Permit #:
EW202305231320
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of roof mounted 3.2kw solar photovoltaic system consisting of 8 panels and 1 inverter - 8 roof-mounted solar photovoltaic modules 400 watts per module 1 interactive inverter total no. of rating 3.8 kw
Valuation:
N/A
Permit #:
EW202305111052
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of roof mounted 4kw solar photovoltaic system consisting of 10 panels and 1 inverter - 10 roof-mounted solar photovoltaic modules 400 watts per module 1 interactive inverter total no. of rating 3.8 kw
Valuation:
N/A
Permit #:
EW202305111051
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of roof mounted 3.20kw solar photovoltaic system consisting of 8 panels and 1 inverter - 8 roof-mounted solar photovoltaic modules 400 watts per module 1 interactive inverter total no. of rating 3.8 kw
Valuation:
N/A
Permit #:
EW202305101029
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Solarunion Reviews
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Solarunion License info
Inactive License
| License # | 990354 |
| Status | Inactive |
| City | Oceanside |
| Type | Contractor |
| Business Type | Corporation |
- According to the City of Oceanside, CA, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Solarunion at the City of Oceanside, CA.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 990354 |
| Status | Inactive |
| City | Butte County |
| Type | Contractor |
| Business Type | Corporation |
- According to the Butte County, CA, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Solarunion at the Butte County, CA.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 990354 |
| Status | Inactive |
| State | California |
| Type | Solar, Electrical |
| 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 Solarunion at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 1010382 |
| Status | Inactive |
| State | California |
| Type | Solar |
| 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 Solarunion at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Unverified License
| Status | Unable To Verify |
| Business Type | Corporation |
- BuildZoom was not able to verify this license with the licensing board
This is a sample of licensing data; click here to access a complete history.
Unverified License
| Status | Unable To Verify |
| Business Type | Corporation |
- BuildZoom was not able to verify this license with the licensing board
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
- How the BuildZoom Score works
- *No active license on file. If you are Solarunion, log in and update your license info in the “Edit Profile” tab.
Bonded
| Bonded Agent | Business Alliance Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
900
Permits
- Building permit records show that Solarunion has worked on 900 permitted projects.
Solarunion Employees
IL
Ivan Lafrinere-Sandoval
Owner
IS
Ivan Sergio La Frinere Sandoval
Rmo
RC
Renzo Castillo
Officer