Updated: Jun 11, 2026
Location and Projects
Address
155 LAKEWOOD RD, Walnut Creek, CA, 94598
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Hafen Construction Solar Contractor
Hafen Construction, 155 Lakewood Rd, Walnut Creek, CA (Employees: Kayla Louise Carlisle, Mark Frank Hafen, and Paul Wayne Hafen) holds a General Building, Roofing, Solar 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 Hafen Construction, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Hafen Construction Contact Information
Phone Number: (925) 324-7176
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Address: 155 LAKEWOOD RD, Walnut Creek, CA 94598
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Hafen Construction Walnut Creek
Quality
109
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Hafen Construction has a BuildZoom score of 109, which places them above 95% of 336,931 contractors in California.
Activity
|
4 projects
|
2025 |
|
2 projects
|
2024 |
|
28 projects
|
2023 |
Our building permit records indicate that Hafen Construction has worked on at least
34.0 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
|
33 projects
|
Solar installations |
Analyzing permits over the last 4 years shows that Hafen Construction mostly works on
solar installation
projects.
Pricing
|
2 projects
|
< $5k |
|
11 projects
|
$5k-$20k |
|
7 projects
|
$20k-$50k |
The typical size of their permits is approximately $17,000. 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.
Includes ground mounted 8.4 kw solar system. 21 solaria 400r panels and 21 enphase iq7a microinverters. 2 enphase encharge 10 batteries “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 co... see more
Valuation:
N/A
Permit #:
BLD2022-02813
Status:
triage
Fee:
$1,110
Permit Type:
N/A
Building Type:
N/A
Remove and replace existing solar photovoltaic panels due to reroof. replace in same location and use same layout reroof on separate permit b25-1260
Valuation:
$1,850
Permit #:
B25-1428
Status:
final
Fee:
$121
Permit Type:
N/A
Building Type:
N/A
36.8 kw roof mount solar. 4 enphase encharge battery backups **12/14/22 revision: show lug kit in main panel. show generator on plans** mchin
Valuation:
$125,000
Permit #:
BIPVR22-009687
Status:
final
Fee:
$874
Permit Type:
N/A
Building Type:
N/A
Install 2.05kw dc roof mounted photovoltaic system (5 modules) and associated equipment
Valuation:
$5,000
Permit #:
REP2026-00165
Status:
complete
Fee:
$483
Permit Type:
N/A
Building Type:
N/A
Photovoltaic plan #4608. 17 photovoltaic modules x 395 watts 1000 = 6.715kw. new subpanel; (roof mount 6.7 kw system. 17 qcells 395w panels and 17 iq7a microinverters)
Valuation:
N/A
Permit #:
E202209072268
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Roof mount 4.46 kw photovoltaic system. 11 rec 405w panels and enphase iq8m microinverters. 2 iq5p batteries 5.0 kwh size batteries total. new backup load 100a subpanel
Valuation:
N/A
Permit #:
B2023-06095
Status:
final
Fee:
$127
Permit Type:
N/A
Building Type:
N/A
Photovoltaic roof mounted solar system - 8.2 kw 20 maxeon 410w panels + 13.5kwh tesla powerwall 3 energy storage system (1 battery) + 11.5 kw tesla inverter + 200a tesla backup gateway 3
Valuation:
$30,000
Permit #:
B25-2866
Status:
issued
Fee:
$583
Permit Type:
N/A
Building Type:
N/A
Plan #5277. residential solar permit; install 14 photovoltaic modules 400 watts per module 5.6 (dc) kw system
Valuation:
N/A
Permit #:
E202304176204
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Roof mount photovoltaic installation of (15) 370w solaria panels and (15) enphase iq7+ microinverters. also install (1) enphase encharge 10 battery and one enphase enpower switch jobsite contact: mark hafen (925) 324-7176 “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 th... see more
Valuation:
$20,000
Permit #:
BLD2020-02236
Status:
final
Fee:
$346
Permit Type:
Alteration
Building Type:
N/A
Install 6.0 (dc) 5.45 (ac) kw photovoltaic solar panels (15 modules) on the roof. fire zone 2 property
Valuation:
N/A
Permit #:
B2023-02999
Status:
issued
Fee:
$127
Permit Type:
N/A
Building Type:
N/A
Install 10.94 (dc) 10.11 (ac) kw photovoltaic solar panels (27 modules) on the roof. fire zone 2 property
Valuation:
N/A
Permit #:
B2023-01303
Status:
approved
Fee:
$127
Permit Type:
N/A
Building Type:
N/A
One battery storage type enphase encharge battery system. this battery will be installed to existing studs and it has a capacity of 10.5 kwh
Valuation:
N/A
Permit #:
BIE22-002940
Status:
final
Fee:
$683
Permit Type:
N/A
Building Type:
N/A
Roof mount photovoltaic system and 2 battery backups. (21) 400w panel installation. 8.4 kw system. (2) enphase encharge 10 batteries and transfer switch
Valuation:
N/A
Permit #:
BIPVR21-011312
Status:
final
Fee:
$414
Permit Type:
N/A
Building Type:
N/A
Roof mount 6.4 kw photovoltaic system. panel information error on prior submission. the correct panel type is the solaria powerx-400r panels
Valuation:
N/A
Permit #:
BLD2023-06789-001
Status:
triage
Fee:
$52
Permit Type:
N/A
Building Type:
N/A
Roof mount 2.8 kw photovolatic. 7-solaria powerx 400r 7 - enphase iq8a micorinverters **for the adu** fabdul-rahman
Valuation:
$7,000
Permit #:
BIPVR23-004205
Status:
final
Fee:
$382
Permit Type:
N/A
Building Type:
N/A
Roof mount installation of (14) 370w photovoltaic panels and (14) enphase iq7+ microinverters and two enphase battery backups and a transfer switch
Valuation:
N/A
Permit #:
BIPVR21-007700
Status:
final
Fee:
$410
Permit Type:
N/A
Building Type:
N/A
The following plans are for an addition of two enphase encharge batteries. the batteries will be installed to existing studs and have a capacity of 21.0 kwh
Valuation:
N/A
Permit #:
BIE21-001182
Status:
final
Fee:
$718
Permit Type:
N/A
Building Type:
N/A
16.8 kw solar roof mount. three enphase encharge 10 battery backups and transfer switch
Valuation:
$70,000
Permit #:
BIPVR22-001076
Status:
final
Fee:
$438
Permit Type:
N/A
Building Type:
N/A
Roof mount photovoltaic 8.8 kw. 22 400w solaria panels and 22 enphase i8a microinverters
Valuation:
$22,000
Permit #:
BIPVR24-005015
Status:
plan check distribution begin
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Roof mount solar 13.6 kw. 34 400w panels 34 enphase iq8a micros
Valuation:
$34,000
Permit #:
BIPVR23-006388
Status:
final
Fee:
$383
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Hafen Construction License info
Verified License
| License # | 937645 |
| Status | Active |
| State | California |
| Type | General Building, Roofing, Solar |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Hafen Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 324941 |
| 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 Hafen Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
109
BuildZoom Score
Bonded
| Bonded Agent | Old Republic Surety Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
157
Permits
- Building permit records show that Hafen Construction has worked on 157 permitted projects.
Hafen Construction Employees
KC
Kayla Louise Carlisle
Officer
MH
Mark Frank Hafen
Sole Owner
PH
Paul Wayne Hafen
Sole Owner