Updated: Apr 23, 2026
Location and Projects
Address
17700 MADISON AVE, Castro Valley, CA, 94546
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Gregory Tyler Cornelius HVAC/Mechanical Contractor
Gregory Tyler Cornelius at 17700 MADISON AVE, Castro Valley, CA 94546, held a HVAC/Mechanical Contractor license (#595183) with the California contractors license board with an expiration date of 12-31-2023. We last verified the license was expired on 04-22-2026.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 336,931 California contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our project planner to be easily matched to qualified, licensed professionals in your area.
Gregory Tyler Cornelius Contact Information
Phone Number: (510) 381-7851
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Address: 17700 MADISON AVE, Castro Valley, CA 94546
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Gregory Tyler Cornelius Castro Valley
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are Gregory Tyler Cornelius, click “This is My Business” to update your information.
Activity
|
4 projects
|
2025 |
|
1 project
|
2024 |
|
3 projects
|
2023 |
Our building permit records indicate that Gregory Tyler Cornelius has worked on at least
8.0 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
|
6 projects
|
HVAC projects |
Analyzing permits over the last 4 years shows that Gregory Tyler Cornelius mostly works on
hvac project
projects.
Pricing
|
1 project
|
< $5k |
|
6 projects
|
$5k-$20k |
|
1 project
|
$20k-$50k |
The typical size of their permits is approximately $11,552. 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.
Building Permits by Gregory Tyler Cornelius
This is a sample of this contractor's permits. Click here to access their complete permit history.
Mobile country club- club hosue office- hvac c/o (2) heat pump package units 5 ton 14.3 seer 8.2 hspf 60k btu
Valuation:
$28,000
Permit #:
592513
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Hvac c/o like for like split system gas furnace 95%afue 14/15seer 2.5 ton in attic
Valuation:
$13,530
Permit #:
592554
Status:
final
Fee:
$268
Permit Type:
N/A
Building Type:
N/A
Web permit - hvac c/o like for like split system 3-ton 14.3 seer 81% afue 60k btu
Valuation:
$17,314
Permit #:
583267
Status:
final
Fee:
$308
Permit Type:
N/A
Building Type:
N/A
Contractor to do emergency sewer lateral repair need to replace all the way into the city main
Valuation:
N/A
Permit #:
EP-2019-04241
Status:
issued
Fee:
N/A
Permit Type:
Work by standards
Building Type:
N/A
Repair/replace failed sewer lateral
Valuation:
N/A
Permit #:
BLDC-2019-04242
Status:
final
Fee:
N/A
Permit Type:
Remodel/repair (e...
Building Type:
N/A
Remove & replace tub surround and valve in bathroom. addition 3 circuits for kitchen. new water/waste line for kitchen sink. extend gas line. new duct for hood. replace subpanel and main subfeed
Valuation:
N/A
Permit #:
BLD2012-02569
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mold repair - remove (e) planter box - repair sheathing and re-stucco - remove interior sheetrock and install new insulation and sheetrick in rooms effected
Valuation:
$8,000
Permit #:
B16-0467
Status:
final
Fee:
$348
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel 169 sq. ft. remove non-bearing wall and addition section of new wall in order to re-orient kitchen to living room area. adding circuits to kitchen for lighting and appliances relocating venting for stove hood sheetrocking and plumbing for icemaker. upgrading electrical service to 200 amps.inspector to verify that walls being removed are non-bearing walls
Valuation:
N/A
Permit #:
BLD2005-01280
Status:
FINALED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel approx. 170 sq. ft per plans. sheetrock changing out cabinets counters floors and appliances upgrading electrical to 200 amps and adding dedicated circuits in kitchen and electrical work in kitchen. adding refrigeration water. updating window and door in kitchen area. remove non-bearing wall between kitchen and family room
Valuation:
N/A
Permit #:
BLD2008-00755
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel hall bathroom 40 sq. ft. replacing shower stall and new sink and sink top. replace swing door with a pocket door. installing ventilation fan
Valuation:
N/A
Permit #:
BLD2013-02532
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Hall bathroom remodel same layout replacement of laundry hook up on adjacent wall
Valuation:
$10,000
Permit #:
B14-2162
Status:
final
Fee:
$230
Permit Type:
N/A
Building Type:
N/A
Repair dry rot damage to 2nd story cantilevered walk way that accesses upstairs unit. like for like.
Valuation:
$0
Permit #:
BI-2014-2314
Status:
issued
Fee:
$350
Permit Type:
N/A
Building Type:
N/A
Hall bathroom remodel due to dryrot damage. repair some water damage to subfloor near tub/replacing tub with new tub/new shower valve. installing ventalator/light. changing light locations over vanity and installing gfci
Valuation:
N/A
Permit #:
BLD2010-00199
Status:
FINALED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace water heater (same location). replace door to exterior water heater closet. repair dryrot damage to back of house - involves spprox. 100 sq. ft. of stucco replacement and rim joist repair at south side of house
Valuation:
N/A
Permit #:
BLD2010-01110
Status:
FINALED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Repair dry rot damage to 2nd story cantilevered walk way that accesses upstairs unit. like for like.
Valuation:
$0
Permit #:
BI-2013-2439
Status:
final
Fee:
$350
Permit Type:
N/A
Building Type:
N/A
To convert a hall closet to a 1/2 bathroom per plans (15 sf remodel)
Valuation:
N/A
Permit #:
BLD2015-00940
Status:
FINALED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel master bathroom (40sf) replace shower wall shower pan valve. extend circuit for light fixture. replace window
Valuation:
N/A
Permit #:
BLD2013-00653
Status:
FINALED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove wood trim and replace with foam belly band and stucco
Valuation:
$2,000
Permit #:
B16-0769
Status:
final
Fee:
$364
Permit Type:
N/A
Building Type:
N/A
Remodel bathroom 55sf
Valuation:
N/A
Permit #:
BLD2014-02822
Status:
FINALED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Supplemental to 2012-02569 replace existing main panel
Valuation:
N/A
Permit #:
BLD2013-00111
Status:
FINALED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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BZ Score
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Avg Project
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BZ Score
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Projects
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Gregory Tyler Cornelius License info
Inactive License
| License # | 595183 |
| 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 Gregory Tyler Cornelius at the California Contractors State License 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 Gregory Tyler Cornelius, click “This is My Business” to update your information.
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
30
Permits
- Building permit records show that Gregory Tyler Cornelius has worked on 30 permitted projects.
Gregory Tyler Cornelius Employees
GC
Gregory Tyler Cornelius
Owner