Updated: Jul 14, 2026
Location and Projects
Address
99 THUNDER HILL DR, Stamford, CT, 06901
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William A Demartino III Electrician
William A Demartino III, 99 Thunder Hill Dr, Stamford, CT (Employee: William Demartino) holds a Electrical Unlimited Contractor license according to the Connecticut license board.
Their BuildZoom score of 95 ranks in the top 22% of 12,093 Connecticut licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring William A Demartino III, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
William A Demartino III Contact Information
Address: 99 THUNDER HILL DR, Stamford, CT 06901
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William A Demartino III Stamford
Quality
95
78th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
William A Demartino III has a BuildZoom score of 95, which places them above 78% of 12,093 contractors in Connecticut.
Activity
|
1 project
|
2025 |
|
1 project
|
2023 |
Our building permit records indicate that William A Demartino III has worked on at least
2.0 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.
Pricing
|
1 project
|
$5k-$20k |
|
1 project
|
$500k-$1mil |
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 William A Demartino III
This is a sample of this contractor's permits. Click here to access their complete permit history.
To remove existing shingles down to sheathing replace any rotted plywood install 6 ft. of ice & water barrier on edges of the roof. install synthetic paper on remaining uncovered areas install white aluminum drip edge install starter strips on all edges of the roof install gaf hdz architectural shingles install ridge vents install ridge caps matching shingles install white 5 inch seam... see more
Valuation:
$18,880
Permit #:
B-25-1318
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New fema compliant 2 story s.f. dwelling with 5 bedrooms
Valuation:
$971,000
Permit #:
BLD-2021-04466
Status:
complete
Fee:
$9,962
Permit Type:
N/A
Building Type:
N/A
Connect wire and power inlet for portable generator tied to existing transfer switch
Valuation:
$2,000
Permit #:
E-21-1559
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Single family
Generator installation connected to propane tank installed under separate permit
Valuation:
$10,000
Permit #:
B-22-588
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
200a service upgrade. rewire bathroom family room new hvac
Valuation:
N/A
Permit #:
E-21-1426
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Single family
Wire addition and remodeled portion of house. replace main panel. relocate sub panel. device counts are approximate
Valuation:
$20,000
Permit #:
E-19-505
Status:
complete
Fee:
N/A
Permit Type:
Electrical
Building Type:
Single family
Wire new generator
Valuation:
N/A
Permit #:
E-22-674
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Single family
Wire fujitsu ac/heat pump split unit in exterior condensor. wire servicemans outlet
Valuation:
$2,000
Permit #:
E-21-515
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Wiring of new lights outlets switches. and equipment in addition
Valuation:
$35,000
Permit #:
E-21-610
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace recessed lighting. addition smoke detectors. addition undercabinet lighting
Valuation:
$4,000
Permit #:
E-21-1005
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Single family
Replace deteriorated meter pan
Valuation:
$5,000
Permit #:
E-21-1427
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Wire addition and remodeled portion of house. relocate service. device count are approximate
Valuation:
N/A
Permit #:
E-19-504
Status:
complete
Fee:
$50
Permit Type:
Electrical
Building Type:
Single family
Crs #7745884 - install 200 amp overhead temporary service
Valuation:
N/A
Permit #:
BLD-2021-04469
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Wire new rooftop ac unit with disconnect switch ****remove and issue when tb-18-353 is approved and fee is paid****
Valuation:
$3,000
Permit #:
E-18-264
Status:
complete
Fee:
$76
Permit Type:
Electrical
Building Type:
Commercial
Re-wire house
Valuation:
$45,000
Permit #:
E-20-173
Status:
issued
Fee:
N/A
Permit Type:
Electrical
Building Type:
Single family
Appartment renovation addition
Valuation:
$10,000
Permit #:
E-20-676
Status:
issued
Fee:
N/A
Permit Type:
Electrical
Building Type:
Single family
Appartment renovation addition
Valuation:
$10,000
Permit #:
TE-20-676
Status:
filed
Fee:
N/A
Permit Type:
Electrical
Building Type:
Single family
Replace meter pan and service cable crs # 3310689
Valuation:
$1,000
Permit #:
E-19-983
Status:
issued
Fee:
$60
Permit Type:
Service (electrical)
Building Type:
Single family
Crs #12937081 - new 200 amp service. *note - new crs# was emailed by electrician on 5-9-23
Valuation:
N/A
Permit #:
BLD-2022-02678
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Provide power to electric gate operator
Valuation:
$4,000
Permit #:
E-19-711
Status:
issued
Fee:
$76
Permit Type:
Electrical
Building Type:
Apartments
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William A Demartino III License info
Verified License
| License # | ELC.0184694-E1 |
| Status | Active |
| State | Connecticut |
| Type | Electrical Unlimited Contractor |
| Date Issued | 10-01-2025 |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for William A Demartino III at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
96
Permits
- Building permit records show that William A Demartino III has worked on 96 permitted projects.
William A Demartino III Employees
WD
William Demartino