Updated: May 01, 2026
Location and Projects
Address
P O BOX 20873, Castro Valley, CA, 94546
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Amtech Construction
Serving Castro Valley and surrounding areas in California, Amtech Inc brings over three decades of experience to the electrical contracting industry. Since its founding 36 years ago, the company has focused on delivering electrical solutions tailored to both residential and commercial properties. Project capabilities include electrical system installation, troubleshooting, and repair. Amtech Inc works with homeowners, business owners, property managers, and developers seeking expertise in electrical upgrades, panel replacements, and wiring for new construction or renovation projects. Known in the Castro Valley region for its reliability in handling a range of electrical needs, the company emphasizes safety and adherence to current codes. Amtech Inc provides solutions suited for single-family homes, multi-unit residences, offices, and retail spaces throughout the local community.
Amtech Inc Services
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Amtech Inc Contact Information
Phone Number: (510) 690-9980
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Address: P O BOX 20873, Castro Valley, CA 94546
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Amtech Inc Castro Valley
Quality
95
78th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Amtech Inc has a BuildZoom score of 95, which places them above 78% of 336,931 contractors in California.
Activity
|
1 project
|
2023 |
Our building permit records indicate that Amtech Inc has worked on at least
1.0 project 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.
Pricing
|
1 project
|
$20k-$50k |
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.
Replace two air conditioning units on rooftop like for like
Valuation:
$40,000
Permit #:
M23-0002
Status:
final
Fee:
$1,488
Permit Type:
N/A
Building Type:
N/A
R/r air conditioning unit at existing location; structural upgrade to prove support and seismic anchorage for new roof mounted mechanical unit. (bldg. mech)
Valuation:
$15,000
Permit #:
CB18-0544
Status:
final
Fee:
$1,020
Permit Type:
N/A
Building Type:
N/A
Replace furnace same location garage addition air conditioning unit side of house air conditioning unit can be no closer than 4.5ft to side property line per planning dept
Valuation:
$6,500
Permit #:
BLDG-2013-02034
Status:
final
Fee:
$200
Permit Type:
N/A
Building Type:
N/A
Permit value$6.5k replace furnace same location garage addition air conditioning unit side of house. air conditioning unit can be no closer than 4.5ft to side property line per planning dept
Valuation:
N/A
Permit #:
BLDG-2013-02034
Status:
FINAL
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove and replace air-conditioning unit at peter pan school. plan check o-t-c by jim kirkman. (bldg. mech.)
Valuation:
$15,000
Permit #:
CB16-0679
Status:
final
Fee:
$571
Permit Type:
N/A
Building Type:
N/A
Replace existing air conditioning unit with new on rooftop
Valuation:
$0
Permit #:
BI-2014-0458
Status:
final
Fee:
$543
Permit Type:
N/A
Building Type:
N/A
Replace furnace with 80& efficiency unit
Valuation:
N/A
Permit #:
RM1200988
Status:
final
Fee:
$163
Permit Type:
N/A
Building Type:
N/A
Rooftop air conditioning unit
Valuation:
$14,000
Permit #:
201705716
Status:
complete
Fee:
$453
Permit Type:
Equipment install...
Building Type:
N/A
Mechanical for duct extensions/corrid smoke dampers (oliver arts center)
Valuation:
$0
Permit #:
M9901881
Status:
Final
Fee:
$127
Permit Type:
N/A
Building Type:
N/A
Mechanical for tenant improvement. - 2 air conditioning units & 2 low pressure ducts
Valuation:
$0
Permit #:
M0000840
Status:
Final
Fee:
$138
Permit Type:
N/A
Building Type:
N/A
Replace water heater
Valuation:
N/A
Permit #:
201500877
Status:
issued
Fee:
$168
Permit Type:
Water heater permit
Building Type:
N/A
Installing 2 heating systems for each floor
Valuation:
$0
Permit #:
M9000888
Status:
Expired
Fee:
$118
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
BI-2011-1793
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of furnace, flue and duct
Valuation:
$0
Permit #:
RM9501555
Status:
Final
Fee:
$88
Permit Type:
N/A
Building Type:
N/A
Replace heating system damaged by fire
Valuation:
$0
Permit #:
C9200325
Status:
Expired
Fee:
$60
Permit Type:
N/A
Building Type:
N/A
2 heating systems and ventilation
Valuation:
$0
Permit #:
RM9401608
Status:
Expired
Fee:
$324
Permit Type:
N/A
Building Type:
N/A
Repl furnace and duct work and flue
Valuation:
$0
Permit #:
M9101333
Status:
Final
Fee:
$82
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
BI-2009-3291
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Duct system split sys heat pump
Valuation:
$0
Permit #:
M9200361
Status:
Final
Fee:
$63
Permit Type:
N/A
Building Type:
N/A
Hvac central heating system
Valuation:
N/A
Permit #:
M9200420
Status:
EXPIRED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
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Amtech Inc License info
Verified License
| License # | 560006 |
| Status | Active |
| State | California |
| Type | Sheet Metal, General Building, Warm Air Heating, Ventilating And Air Conditioning, Plumbing, Refrigeration |
| Business Type | Corporation |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Amtech Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 405621 |
| Status | Inactive |
| State | California |
| Type | General Building, Warm Air Heating, Ventilating And Air Conditioning, Sheet Metal, Plumbing, Refrigeration |
| 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. If this is your business, please update your license status.
Check this license's status for Amtech Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Clear Spring Property & Casualty Company |
30
Permits
- Building permit records show that Amtech Inc has worked on 30 permitted projects.
Amtech Inc Employees
JC
James William Caldwell
Ceo/President
TH
Terrence Edward Holland
Rmo / Ceo / Pres
YH
Yadira Holland
Officer
YH
Yadira Holland
Officer