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Updated: May 15, 2026
Location and Projects
Address
207 Mcpherson St, Santa Cruz, CA, 95060
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Allterra Solar Photos
Allterra Solar Engineer
Allterra was founded in 2004 by brothers James and Nathaniel Allen. Allterra began as an environmental engineering firm that investigated and remediated dissolved contaminants in groundwater. Clients include agriculture, energy, and public agencies. In just a few short years, the company successfully investigated and closed 30 groundwater contamination cases in the SF Bay Region.
In 2009, Allterra launched its solar division to accelerate the adoption of renewable energy on the central coast. Allterra’s unique data driven approach and unparalleled customer service has fueled the company’s success. In 2012, Allterra Solar was awarded Best Solar Company in Santa Cruz County by readers of the Good Times and Santa Cruz Sentinel, titles that have yet to be relinquished. Subsequent awards include Best Place to Work in Monterey Bay by Monterey County Business Council and 2015 Cool Climate Leader by California Air Resources Board, an award earned by only five other companies in California.
From BuildZoom: Allterra Solar, 207 Mcpherson St, Santa Cruz, CA (Employees: James Andrew Allen and Nathaniel Haven Allen) holds a General Engineering, General Building, Solar license and 1 other license according to the California license board.
Their BuildZoom score of 123 ranks in the top 1% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Allterra Solar, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Allterra Solar Services
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Allterra Solar Contact Information
Phone Number: (831) 425-2608
Address: 207 Mcpherson St, Santa Cruz, CA 95060
Allterra Solar Santa Cruz
Quality
123
99th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Allterra Solar has a BuildZoom score of 123, which places them above 99% of 336,931 contractors in California.
Activity
|
139 projects
|
2025 |
|
124 projects
|
2024 |
|
204 projects
|
2023 |
Our building permit records indicate that Allterra Solar has worked on at least
467.0 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
|
14 projects
|
Commercial Renovations |
Analyzing permits over the last 4 years shows that Allterra Solar mostly works on
commercial renovation
projects.
Pricing
|
15 projects
|
< $5k |
|
123 projects
|
$5k-$20k |
|
229 projects
|
$20k-$50k |
|
24 projects
|
$50k-$100k |
|
1 project
|
$100k-$250k |
The typical size of their permits is approximately $25,000. 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.
Solar photovoltaic roof mount grid tied ess (battery) power inlet box pv: 9.24 kw 22 panels one-story residence $63 000 valuation ess: 10 kw 15 kwh 1 module franklin apower 2 franklin agate power inlet box reliance pr50 50a 240v nema 3r integrated 50a breaker air conditioning disconnect siemens gnf222r 60a 240v 200a subpanel 200a feed breaker
Valuation:
$63,000
Permit #:
BLD25-00237
Status:
final
Fee:
$993
Permit Type:
1 - 2 family dwel...
Building Type:
1 - 2 family dwel...
Residential roof mounted photovoltaic system. 2.88 kw 9 panels. existing electrical panel will be used. 125 amps - remove and re-installation of existing photovoltaic system to allow for work to be done for re-roof. photovoltaic permit issued under 18cp00949. no changes to equipment or layout
Valuation:
$4,100
Permit #:
25CP01401
Status:
issued
Fee:
$238
Permit Type:
N/A
Building Type:
N/A
Solar photovoltaic roof mounted grid-tied energy storage system (batteries) 8.40 kw photovoltaic 20 panels one-story residence $55 000 valuation 11.5 kw ess 1 module tesla powerwall 3 meter collar 125a subpanel 100a feed breaker related permit: bld2025-00770 - ess expired permit: bld2019-02370 - water heater (resolved)
Valuation:
N/A
Permit #:
BLD2025-00396
Status:
final
Fee:
$1,069
Permit Type:
N/A
Building Type:
N/A
Photovoltaic solar roof mount grid tied ess (battery) 6.30 kw photovoltaic 15 panels 10 kw ess 1 module franklin apower 2 franklin agate air conditioning disconnect 60a 240v siemens gnf322r 200a subpanel 200a feed breaker
Valuation:
$52,000
Permit #:
BLD25-01078
Status:
final
Fee:
$1,484
Permit Type:
N/A
Building Type:
N/A
Solar photovoltaic ground mount grid tied ess (batteries) evse 12.6 kw photovoltaic 30 panels $108 000 valuation 23 kw ess 2 modules tesla powerwall 3 meter collar evse tesla gen 3 connector 40a 9.6 kwh hardwired 50a ocpd related evc permit- bld2025-01756 related pvs permit- bld2025-00922
Valuation:
N/A
Permit #:
BLD2025-00923
Status:
issued
Fee:
$923
Permit Type:
N/A
Building Type:
N/A
Solar photovoltaic ground mount grid tied ess (batteries) evse 12.6 kw photovoltaic 30 panels $108 000 valuation 23 kw ess 2 modules tesla powerwall 3 meter collar evse tesla gen 3 connector 40a 9.6 kwh hardwired 50a ocpd **address was incorrectly listed as 105 hildebrand rd. updated to correct project address: 110 hildebrand rd - wt 9/3/25** related evc permit- bld2025-01756 related ... see more
Valuation:
N/A
Permit #:
BLD2025-00922
Status:
issued
Fee:
$1,669
Permit Type:
N/A
Building Type:
N/A
Energy storage system (batteries) install 54kwh tesla powerwall 3 (4) meter collar two-story residence $59 000 valuation 125a subpanel 125a feed breaker existing photovoltaic system finale (bld2020-01490)
Valuation:
N/A
Permit #:
BLD2025-00541
Status:
final
Fee:
$1,486
Permit Type:
N/A
Building Type:
N/A
Energy storage system grid tied 30 kw 45 kwh 3 modules franklin apower 2 franklin agate 200a subpanel 200a main breaker power inlet box reliance pr50 50a 240v nema 3r integrated 50a breaker
Valuation:
$55,000
Permit #:
25CP01801
Status:
issued
Fee:
$356
Permit Type:
N/A
Building Type:
N/A
Removal and re-installation of existing photovoltaic system permitted under issued b-185143. install or verify listed smoke detectors and carbon monoxide alarms or combination smoke and carbon monoxide detectors/alarms in the existing dwelling
Valuation:
N/A
Permit #:
B-246858
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Single residence
Removal and reinstallation of existing photovoltaic system to allow for work to be done to the roof. original photovoltaic permit 15cp00771. no changes to equipment or layout
Valuation:
$6,900
Permit #:
25CP01403
Status:
triage
Fee:
$239
Permit Type:
N/A
Building Type:
N/A
Photovoltaic solar roof mount grid tied 6.3 kw 15 panels one-story residence $31 000 valuation 30a air conditioning disconnect siemens hf221r
Valuation:
N/A
Permit #:
BLD2025-00563
Status:
final
Fee:
$1,784
Permit Type:
N/A
Building Type:
N/A
Revision: address change from 207 palma street to 220 valencia avenue note: nothing has changed but the address solar photovoltaic | gridtied | roofmount | 3.20kw 8 modules | (n) micro-inverters | (n) 125 a busbar up to 4 acbc iq envoy monitoring
Valuation:
N/A
Permit #:
REV2022-00061-001
Status:
issued
Fee:
$261
Permit Type:
N/A
Building Type:
N/A
Revision: address change from 207 palma street to 220 valencia avenue note: nothing has changed but the address solar photovoltaic | gridtied | roofmount | 3.20kw 8 modules | (n) micro-inverters | (n) 125 a busbar up to 4 acbc iq envoy monitoring
Valuation:
N/A
Permit #:
REV2022-00061-001
Status:
issued
Fee:
$261
Permit Type:
N/A
Building Type:
N/A
Residential roof mounted photovoltaic system. 13.86 kw 33 panels. existing electrical panel will be used. 200 amps
Valuation:
$35,000
Permit #:
25CP01043
Status:
final
Fee:
$593
Permit Type:
N/A
Building Type:
N/A
Residential roof mounted photovoltaic system. 16.38 kw 39 panels. existing electrical panel will be used. 400 amps
Valuation:
$35,000
Permit #:
25CP00831
Status:
final
Fee:
$501
Permit Type:
N/A
Building Type:
N/A
Solar photovoltaic roof mount grid tied array 1: 2.52 kw 6 panels array 2: 1.96 kw 6 panels total pv: 4.48 kw 12 panels
Valuation:
$15,000
Permit #:
BLD25-01281
Status:
final
Fee:
$892
Permit Type:
N/A
Building Type:
N/A
4.20 kw photovoltaic 10 panels two-story residence $44 100 valuation 10 kw ess 1 module franklin apower 2 agate isolation switch 60a air conditioning disconnect siemens gnf322r
Valuation:
N/A
Permit #:
24CP03928-REV1
Status:
final
Fee:
$121
Permit Type:
N/A
Building Type:
N/A
Evse tesla gen 3 connector 40a 9.6 kwh hardwired 50a ocpd related ess permit- bld2025-00923 related pvs permit- bld2025-00922
Valuation:
N/A
Permit #:
BLD2025-01756
Status:
final
Fee:
$451
Permit Type:
N/A
Building Type:
N/A
Energy storage system (battery) 11.5 kw 1 module tesla powerwall 3 meter collar related permit: bld2025-00396 - pvs expired permit: bld2019-02370 - water heater (resolved)
Valuation:
N/A
Permit #:
BLD2025-00770
Status:
final
Fee:
$857
Permit Type:
N/A
Building Type:
N/A
7.56kw roof mounted grid-tied photovoltaic system & energy storage system 15.36kw 20.0kwh
Valuation:
$60,000
Permit #:
BLD25-00058
Status:
issued
Fee:
$643
Permit Type:
1 - 2 family dwel...
Building Type:
1 - 2 family dwel...
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Allterra Solar License info
Verified License
| License # | 847973 |
| Status | Active |
| State | California |
| Type | General Engineering, General Building, Solar |
| Business Type | Corporation |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Allterra Solar at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 842748 |
| Status | Inactive |
| State | California |
| Type | General Engineering, 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 Allterra Solar at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
123
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Workers' Compensation History |
1.7K
Permits
- Building permit records show that Allterra Solar has worked on 1658 permitted projects.
Allterra Solar Employees
JA
James Andrew Allen
General Partner
NA
Nathaniel Haven Allen
General Partner