Updated: May 10, 2026
Location and Projects
Address
9 Marlin Dr., Newark, DE, 19713
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Barnett William J Jr HVAC/Mechanical Contractor
Barnett William J Jr, 9 Marlin Dr, Newark, DE (Employee: William J. Barnett) holds a Hvacr license and 1 other license according to the Delaware license board.
Their BuildZoom score of 0 does not rank in the top 50% of Delaware contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Barnett William J Jr, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Barnett William J Jr Contact Information
Address: 9 Marlin Dr., Newark, DE 19713
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Barnett William J Jr Newark
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are Barnett William J Jr, click “This is My Business” to update your information.
Activity
|
1 project
|
2023 |
Our building permit records indicate that Barnett William J Jr 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
|
$5k-$20k |
|
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.
Partially finished basement (existing egress; no added bedrooms) | notes: on 04/20/2022 the applicant revised floor plan to reduce size of closet adjacent to interior stair addition storage under interior stair and addition a partition to separate the sewin
Valuation:
$6,768
Permit #:
8065699
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New system: replacement of 90, 000-btu natural gas up 80% flow heater; crack heat exchanger--like for like
Valuation:
N/A
Permit #:
202000714
Status:
final
Fee:
$65
Permit Type:
Replacement
Building Type:
Residential
Misc. in town 22 x 4 dock & lift 10 x 13 6 x 5 6 x 5
Valuation:
$30,000
Permit #:
202433
Status:
issued
Fee:
$63
Permit Type:
N/A
Building Type:
N/A
Residence. addition-in town 34 x 23 ground level deck
Valuation:
$6,647
Permit #:
206905
Status:
issued
Fee:
$17
Permit Type:
N/A
Building Type:
N/A
Addition gas line for future gas stove installation from existing gas line. new 3/4 csst tubing to future new
Valuation:
N/A
Permit #:
201903024
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Residential
3/4 gastite csst tubing to new 57, 000 btu gas range from existing manifold
Valuation:
N/A
Permit #:
201902413
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Residential
Replace 72, 000 btu ng 90% heater only (like for like) *(rev. 02/22/18: addition replacement of coil only)*
Valuation:
N/A
Permit #:
201716748
Status:
final
Fee:
$90
Permit Type:
N/A
Building Type:
Commercial
Install (change out) air conditioning 1.5 ton unit & 90+ 40, 000 btu gas heater only
Valuation:
N/A
Permit #:
201715424
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Apartment
Install (change out) air conditioning 1.5 ton unit & 90+ 40, 000 btu gas heater only
Valuation:
N/A
Permit #:
201715423
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Apartment
Install (change out) air conditioning 1.5 ton unit & 90+ 40, 000 btu gas heater only
Valuation:
N/A
Permit #:
201715422
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Apartment
Install (change out) air conditioning 1.5 ton unit & 90+ 40, 000 btu gas heater only
Valuation:
N/A
Permit #:
201715421
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Apartment
Install (change out) air conditioning 1.5 ton unit & 90+ 40, 000 btu gas heater only
Valuation:
N/A
Permit #:
201715420
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Apartment
Replacement duct work home owner has a building permit for finish basement needs climate control for area proposed permit
Valuation:
N/A
Permit #:
201711089
Status:
final
Fee:
$65
Permit Type:
New construction
Building Type:
Residential
Replacement replace 80, 000btu upflow heater with same. like for like
Valuation:
N/A
Permit #:
201905065
Status:
final
Fee:
$65
Permit Type:
Replacement
Building Type:
Residential
Install (change out) heater 90 % 90, 000 btu gas heater only
Valuation:
N/A
Permit #:
201715275
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Residential
Replace trane furnace with new furnace (like-for-like)
Valuation:
N/A
Permit #:
201902134
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Residential
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License # HM-0000114
Newark, DE
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Verified License
BuildZoom confirmed this contractor's license
Barnett William J Jr License info
Verified License
| License # | HM-0000299 |
| Status | Active |
| State | Delaware |
| Type | Hvacr |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Barnett William J Jr at the State of Delaware.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 2017601711 |
| Status | Inactive |
| State | New Castle County |
| Type | Contractor Resident |
- According to the State of Delaware Department of Finance: Division of Revenue, 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 Barnett William J Jr at the State of Delaware Department of Finance: Division of Revenue.
This is a sample of licensing data; click here to access a complete history.
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BuildZoom Score
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- *No active license on file. If you are Barnett William J Jr, click “This is My Business” to update your information.
11
Permits
- Building permit records show that Barnett William J Jr has worked on 11 permitted projects.
Barnett William J Jr Employees
WB
William J. Barnett
Applicant