Updated: Jul 11, 2026
Location and Projects
Address
Newark, DE, 19702
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Hillside Oil Co HVAC/Mechanical Contractor
Hillside Oil Co Inc, Newark, DE (Employee: James Sellers) holds a Non Resident Contractor license and 4 other licenses according to the New Castle County license board.
Their BuildZoom score of 108 ranks in the top 5% of 8,071 Delaware licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Hillside Oil Co Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Hillside Oil Co Inc Contact Information
Phone Number: (302) 738-4144
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This is a sample of this contractor's permits. Click here to access their complete permit history.
New system hvac unit(s) install ductless unit for new sunroom and second floor bedroom. replace ductless unit for pool area. make repairs to existing return duct form storm damage. attach to building permit #202401508
Valuation:
N/A
Permit #:
202416511
Status:
final
Fee:
$79
Permit Type:
New construction
Building Type:
Residential
New system hvac unit(s) duct work installation of gas furnace air conditioning and duct work due to fire damage. attach to building permit#202415561
Valuation:
N/A
Permit #:
202501633
Status:
final
Fee:
$126
Permit Type:
New construction
Building Type:
Residential
New plumbing gas test we will be installing a 500 gallon buried propand storage tank. we will trrench approx 25 from the tank to a generator being installed by advanced electrical services. we will install the tubing regulators fittings. all work outside. no inside wo
Valuation:
N/A
Permit #:
202408833
Status:
final
Fee:
$175
Permit Type:
New construction
Building Type:
Residential
Replacement hvac unit(s) gas test we will remove the oil fired furnace evap coil condenser and oil tank. we will install a 48, 000 btu heat pump witha 100, 000 btu natural gas fired furnace evap coil and comndenser. we will install 25 of 3/4 csst
Valuation:
N/A
Permit #:
202406962
Status:
final
Fee:
$69
Permit Type:
Replacement
Building Type:
Residential
New system hvac unit(s) duct work new system hvac unit(s) duct work see attached proposal for a 2 1/2ton air conditioning and two ton ductless unit
Valuation:
N/A
Permit #:
202504243
Status:
final
Fee:
$187
Permit Type:
New construction
Building Type:
Residential
Replacement hvac unit(s) gas test oil to gas conversion replace furnace and air conditioning. install gas line for furnace and future appliances
Valuation:
N/A
Permit #:
202503553
Status:
final
Fee:
$65
Permit Type:
Replacement
Building Type:
Residential
New system hvac unit(s) tull contracting is building an addition at this property. we will be installing three evaporators (ductless) and one 24 000 btu heatpump in the main house and one evaporator with a 18 000btu heatpump in the addition
Valuation:
N/A
Permit #:
202413277
Status:
final
Fee:
$69
Permit Type:
New construction
Building Type:
Residential
New plumbing gas test we are supply a buried 2 ips poly tubing from the gas meter to the new generator with proper riswers fittings and valves. all of our work is outside. the electricians will be resaponsible for their portion of this work
Valuation:
N/A
Permit #:
202214369
Status:
final
Fee:
$65
Permit Type:
New construction
Building Type:
Residential
Replacement gas test hydronic(boiler/radiant) oil to gas conversion. install new gas boiler and run gas line from meter to boiler
Valuation:
N/A
Permit #:
202500336
Status:
final
Fee:
$65
Permit Type:
Replacement
Building Type:
Residential
New system duct work install supply and returns ducts for duct for finished basement attach to building permit#202502668
Valuation:
N/A
Permit #:
202504554
Status:
issued
Fee:
$65
Permit Type:
New construction
Building Type:
Residential
New system duct work installation of supply and return ducts for finished basement. attach to building permit#202503361
Valuation:
N/A
Permit #:
202503609
Status:
issued
Fee:
$65
Permit Type:
New construction
Building Type:
Residential
New system hvac unit(s) installation of ductless heat pump for addition. attach to building permit number 202501997
Valuation:
N/A
Permit #:
202504820
Status:
final
Fee:
$65
Permit Type:
New construction
Building Type:
Residential
New system duct work addition supply and return ducts for finished basement. attach to building permit #202500719
Valuation:
N/A
Permit #:
202503337
Status:
issued
Fee:
$65
Permit Type:
New construction
Building Type:
Residential
New system duct work install supply and return ducts for finished basement. attach to building permit#202503882
Valuation:
N/A
Permit #:
202505104
Status:
final
Fee:
$65
Permit Type:
New construction
Building Type:
Residential
New system duct work install supply and return ducts for finished basement attach to building permit#202503631
Valuation:
N/A
Permit #:
202505058
Status:
final
Fee:
$65
Permit Type:
New construction
Building Type:
Residential
New system duct work install supply and return ducts for finished basement attach to building permit#202504433
Valuation:
N/A
Permit #:
202505057
Status:
final
Fee:
$65
Permit Type:
New construction
Building Type:
Residential
New system duct work install supply and returns ducts for finished basement attact to building permit#202503699
Valuation:
N/A
Permit #:
202504553
Status:
issued
Fee:
$65
Permit Type:
New construction
Building Type:
Residential
New system duct work install supply and return ducts for finished basement. attach to building permit# 202502391
Valuation:
N/A
Permit #:
202503340
Status:
issued
Fee:
$65
Permit Type:
New construction
Building Type:
Residential
New system duct work install supply and return ducts for finished basement. attach to building permit# 202502603
Valuation:
N/A
Permit #:
202503338
Status:
issued
Fee:
$65
Permit Type:
New construction
Building Type:
Residential
New system hvac unit(s) install ductless heat pumps for finished basement. attach to building permit#202202189
Valuation:
N/A
Permit #:
202502328
Status:
issued
Fee:
$65
Permit Type:
New construction
Building Type:
Residential
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113
BZ Score
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Avg Project
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Projects
113
BZ Score
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Avg Project
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Projects
License # HM-0000114
Newark, DE
111
BZ Score
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Avg Project
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Hillside Oil Co Inc Reviews
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Verified License
BuildZoom confirmed this contractor's license
Hillside Oil Co Inc License info
Verified License
| License # | 2003100610 |
| Status | Active |
| State | New Castle County |
| Type | Non Resident Contractor |
| Date Issued | 01-01-2026 |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Hillside Oil Co Inc 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.
Verified License
| License # | 1989035856 |
| Status | Active |
| State | New Castle County |
| Type | Resident Contractor |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Hillside Oil Co Inc 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.
License Not Verified
| License # | PA109127 |
| Status | Active |
| State | Pennsylvania |
- When BuildZoom last verified this license, it had an expiration date of February, 2026. Check the current license status of Hillside Oil Co Inc with the Pennsylvania Office of the Attorney General
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | PA071340 |
| Status | Active |
| State | Pennsylvania |
| Type | Heating And Air Conditioning Installations And Repairs |
- When BuildZoom last verified this license, it had an expiration date of June, 2016. Check the current license status of Hillside Oil Co Inc with the Pennsylvania Office of the Attorney General
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 13VH07641900 |
| Status | Inactive |
| State | New Jersey |
| Type | Home Improvement Business Contr |
- According to the New Jersey Department of Law & Public Safety, 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 Hillside Oil Co Inc at the New Jersey Department of Law & Public Safety.
This is a sample of licensing data; click here to access a complete history.
108
BuildZoom Score
Insured
| Insurer | Federated Mutual Insurance |
| Insured up to | $1,000,000 |
682
Permits
- Building permit records show that Hillside Oil Co Inc has worked on 682 permitted projects.
Hillside Oil Co Inc Employees
JS
James Sellers
Pres