Updated: Mar 25, 2026
Location and Projects
Address
822 HARTZ WAY STE 240, Danville, CA, 94526
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Northstar Solar
Northstar Solar, 822 Hartz Way, Danville, CA (Employees: Nathaniel David Catalano and Ryan Thomas Burns) holds a Solar, Painting And Decorating, General Building license and 1 other license according to the California license board.
Their BuildZoom score of 111 ranks in the top 4% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Northstar Solar, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Northstar Solar Contact Information
Phone Number: (925) 400-7479
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Address: 822 HARTZ WAY STE 240, Danville, CA 94526
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Northstar Solar Danville
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Northstar Solar has a BuildZoom score of 111, which places them above 96% of 336,931 contractors in California.
Activity
|
55 projects
|
2025 |
|
72 projects
|
2024 |
|
73 projects
|
2023 |
Our building permit records indicate that Northstar Solar has worked on at least
200.0 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
|
11 projects
|
Home Additions |
|
4 projects
|
Commercial Renovations |
|
171 projects
|
Solar installations |
Analyzing permits over the last 4 years shows that Northstar Solar mostly works on
solar installation
and home addition
projects.
Pricing
|
9 projects
|
< $5k |
|
25 projects
|
$5k-$20k |
|
122 projects
|
$20k-$50k |
|
31 projects
|
$50k-$100k |
The typical size of their permits is approximately $30,653. 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 roof mounted solar 14.26kw 31 panels (3) tesla dc expansion battery units at 13.5kw each (1) universal car charger (n) 200amp sub panel (backup panel) ***field rev sub 1 3/4/25 - moved gateway outside of home to new 200amp sub panel. moved evc from left side of garage to divider between the 2-car garage and single car stall. changed mci verbiage from 1 mci per 3 panels to... see more
Valuation:
$63,650
Permit #:
B25-0415
Status:
final
Fee:
$1,622
Permit Type:
N/A
Building Type:
N/A
Re roof 1600 sqft of exisitng comparable shingle roof reinstall 1600 sqft of new comparable shingle install 16 roof mounted rec 460w solar panels 1 tesla backup switch 1 tesla powerwall 3 1 tesla dc expansion unit 1 120v outlet near main panel
Valuation:
$62,675
Permit #:
BRSOLAR-25-0122
Status:
complete
Fee:
$863
Permit Type:
Reinstall
Building Type:
N/A
Re-roof comparable to comparable 35 sq
Valuation:
$54,381
Permit #:
R25-008347
Status:
final
Fee:
$384
Permit Type:
N/A
Building Type:
N/A
Cacnelled by contractor re roof 2 structures 1. main house 1800 sqft 2. garage 400 sqft gutter and down spouts existing removal and re roof 1800 sqft replace with certainted landmark pro on main house removal and re roof 400 sqft replace with landmark solaris on detached garage
Valuation:
$18,800
Permit #:
BD-2025-299119
Status:
canceled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 20 rec 460w solar panels. 1 tesla powerwall 3. 1 tesla expansion unit. 1 tesla backup switch. rev 31: move battery location from right side of window to under windows. (iss 4.8.25)
Valuation:
$44,200
Permit #:
BD-2025-297707
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 23 rec 460w roof mounted solar panels 1 tesla battery 1 tesla ev charger replace 5’ of fasha board re roof to comparable shingle 18 squares main house 350sqft re roof to comparable shingle on detached structor class a
Valuation:
$60,250
Permit #:
BD-2025-299240
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Photovoltaic roof mounted solar 26 panels 10.92kw (2) tesla powerwall batteries 13.5kw each (1) tesla ev charger existing solar b14-1145 and existing ev charger b19-1566
Valuation:
$54,900
Permit #:
B25-0728
Status:
final
Fee:
$956
Permit Type:
N/A
Building Type:
N/A
1. (n) 7.82 kw photovoltaic -17 roof mounted solar panels (n) 13.5 kw battery backup and (n) 200 amp main service panel upgrade 2. (n) 2600 sqft comparable to comparable reroof and (n) replacing facia damage replacing siding damage and trim plus prime and painting to waterproof and match
Valuation:
$56,150
Permit #:
BLD24-03347
Status:
final
Fee:
$1,488
Permit Type:
N/A
Building Type:
N/A
Removing 13 (e) panels from upper roof installing 14 rec 420 to upper roof 12 (e) lg electronics lg300n1c-a3 300w on flat roof reconnecting 5 (e) lg electronics lg300n1c-a3 300w panels with new iq8 micos - disconnecting remaining 7 panels but keeping installed
Valuation:
$5,000
Permit #:
B2024-03793
Status:
issued
Fee:
$195
Permit Type:
N/A
Building Type:
N/A
Install (16) rec aa pure-rx roof mounted solar panels (1) tesla powerwall 3 (1) tesla backup switch (1) 60 amp disconnect
Valuation:
$30,750
Permit #:
BRSOLAR-25-0050
Status:
final
Fee:
$588
Permit Type:
New
Building Type:
N/A
Alteration to a single family residence to addition one tesla expansion unit to existing solar and battery system 21
Valuation:
$7,000
Permit #:
BPA2025-00885
Status:
filed
Fee:
N/A
Permit Type:
Alteration
Building Type:
N/A
Installing 24 rec 460w solar panels 1 tesla backup switch 1 tesla powerwall 3 1 tesla expansion unit new 200 service upgrade related photovoltaic permit- bld2025-01722
Valuation:
N/A
Permit #:
BLD2025-01544
Status:
final
Fee:
$1,731
Permit Type:
N/A
Building Type:
N/A
Revison: edited the elevation drawings to show distance from the gas meter to the battery is a foot total
Valuation:
N/A
Permit #:
BLD2025-01497-001
Status:
triage
Fee:
$146
Permit Type:
N/A
Building Type:
N/A
Removal of old roofing material and reinstallation of 4500 sq. feet of certainteed landmark pro solaris cool shingle **45 squares crrc 0668-0140a**rgeorge
Valuation:
$29,250
Permit #:
BIRR23-004766
Status:
final
Fee:
$460
Permit Type:
N/A
Building Type:
N/A
Roof mounted photovoltaic system 7.56 kw (2) ess 200a sub panel
Valuation:
$45,042
Permit #:
M25-032134
Status:
final
Fee:
$532
Permit Type:
N/A
Building Type:
N/A
Install 10.58 (dc) kw photovoltaic solar panels (23 modules) on the roof with two (2) 27kwh tesla powerwalls new 200 amp main service panel upgrade & 125 amp load center
Valuation:
N/A
Permit #:
B2024-04311
Status:
approved
Fee:
$327
Permit Type:
N/A
Building Type:
N/A
Re-roof comparable to comparable 58 sq *existing solar*
Valuation:
$54,000
Permit #:
R25-008277
Status:
final
Fee:
$499
Permit Type:
N/A
Building Type:
N/A
Roof mounted photovoltaic system 10.08 kw 1 ess
Valuation:
$71,300
Permit #:
M25-032129
Status:
final
Fee:
$464
Permit Type:
N/A
Building Type:
N/A
Removal and reinstallation of 2000 sqft of comparable roofing material. black color. *pv/ess/subpanel(elec) permit attached to this job bl-pvsapp-2024-00135*
Valuation:
$21,100
Permit #:
BL-ROOF-2024-00219
Status:
complete
Fee:
$684
Permit Type:
N/A
Building Type:
N/A
(n) 30 roof mounted solar panels creating a 12.30kw dc stc (n) 3 enphase battery backups for 15.0kwh 11.52kw air conditioning of backup (n) 125 amp subpanel
Valuation:
$62,500
Permit #:
BIPVR24-001962
Status:
final
Fee:
$384
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Northstar Solar License info
Verified License
| License # | 1006316 |
| Status | Active |
| State | California |
| Type | Solar, Painting And Decorating, General Building |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Northstar Solar 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 # | 1006316 |
| Status | Active |
| State | California |
- When BuildZoom last verified this license, it had an expiration date of January, 2021. Check the current license status of Northstar Solar with the California Contractors State License Board
This is a sample of licensing data; click here to access a complete history.
111
BuildZoom Score
Bonded
| Bonded Agent | This License Filed A Contractor's Bond With |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
297
Permits
- Building permit records show that Northstar Solar has worked on 297 permitted projects.
Northstar Solar Employees
NC
Nathaniel David Catalano
Rmo
RB
Ryan Thomas Burns
Sole Owner