Updated: Jul 06, 2026
Location and Projects
Address
747 Stony Hill Road, Philadelphia, PA, 19019
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Delong Service Company Plumber
Delong Service Company Inc, 747 Stony Hill Rd, Philadelphia, PA (Owned by: Mihail I Giannaros) holds a Refrigeration (Ref) license and 5 other licenses according to the Virginia license board.
Their BuildZoom score of 101 ranks in the top 12% of 125,106 Pennsylvania licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Delong Service Company Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Delong Service Company Inc Services
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Delong Service Company Inc Contact Information
Phone Number: (215) 369-9800
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Address: 747 Stony Hill Road, Philadelphia, PA 19019
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Delong Service Company Inc Philadelphia
Quality
101
88th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Delong Service Company Inc has a BuildZoom score of 101, which places them above 88% of 125,106 contractors in Pennsylvania.
Activity
|
1 project
|
2025 |
|
3 projects
|
2024 |
Our building permit records indicate that Delong Service Company Inc has worked on at least
4.0 projects over the past 2 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
|
4 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that Delong Service Company Inc mostly works on
plumbing project
projects.
Pricing
|
3 projects
|
< $5k |
|
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.
Building Permits by Delong Service Company Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Backflow prevention assembly installation
Valuation:
$4,995
Permit #:
PP-2025-010980
Status:
complete
Fee:
N/A
Permit Type:
Alterations
Building Type:
N/A
Rough plumbing for 2 kitchens-3 baths- 1 laundry
Valuation:
$2,800
Permit #:
PP-2020-011953
Status:
complete
Fee:
N/A
Permit Type:
Alterations
Building Type:
N/A
For a walk-in cooler installation
Valuation:
$20,850
Permit #:
MP-2023-005211
Status:
complete
Fee:
N/A
Permit Type:
Addition and/or a...
Building Type:
N/A
Made final connections to prep sink.the installation will comply with the philadephia plubming code 2004
Valuation:
N/A
Permit #:
912265
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Backflow preventer replacment
Valuation:
$1,800
Permit #:
PP-2024-007013
Status:
complete
Fee:
N/A
Permit Type:
Alterations
Building Type:
N/A
Replace 1 backflow device
Valuation:
$1,800
Permit #:
PP-2023-017051
Status:
issued
Fee:
N/A
Permit Type:
Alterations
Building Type:
N/A
Installation of one new roof mounted condensing and evaporator unit to serve display case for space bc-18a in an existing airport as per approved plans
Valuation:
N/A
Permit #:
933157
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 2 hvac units for upstairs apts 3rd fl front and rear 2 ton for each apartment and 6, 000 btu new duct for each apartment. relocation 2nd floor existing duct. all equipment must be contained with in units served. call inspector for an initial inspection prior to the start of work
Valuation:
N/A
Permit #:
507761
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Ez permit ductwork - for the installation of new ductwork registers/grilles/diffusers as per attached standard. deviations from this standard will result in permit revocation and require submission of construction plans
Valuation:
N/A
Permit #:
591898
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Interior alterations to include new barn oak wood planks will be placed throughout and existing wall in kitchen area will recieve stainless steel panels. the remainder of existing walls to recieve barn oak wood planks throughout for the existing bar restaurant on the first floor in a one story structure with basement. no change to occupancy as previously approved under ap#78413
Valuation:
N/A
Permit #:
401667
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install one cooling and heating unit gas fired direct vented and duct work for 1ft floor apartment. 2 ton unit and install 3 ton unit for 2nd floor apartment and ductwork. gas fired direct vent. all equipment and associated duct work to be contained entirely within tenant space. no communicating ductwork. gas fired appliances not to be located in ceiling space where used as a return a... see more
Valuation:
N/A
Permit #:
404556
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install duct-work and one 80.000 btu warm air unit all contained in 2nd floor apartment. installation of mechanical equipment. all equipment is to be installed within the same dwelling unit with no penetrations of fire rated assemblies and installed as per manufactures specifications. installation must meet the code requirements of the international mechanical code and the internation... see more
Valuation:
N/A
Permit #:
351341
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
For the installation of nine (9) rooftop units and ductwork throughout building. all duct penetrations in rated corridor shall be constructed of steel with minimum thickness of 0.019 in
Valuation:
N/A
Permit #:
456102
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of duct work and diffusers, exhaust fans and connect to existing roof top units hvac system. in conjunction with see prior mechanical permits ap341692 & ap340953. comply with issued violations
Valuation:
N/A
Permit #:
342531
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace the existing air conditioning unit and duct at 1st floor area. 1 3 ton unit all duct work to remain within the first floor commercial space and basement
Valuation:
N/A
Permit #:
456081
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of duct work for 25 exhaust fans supply and return duct work. separate permit required for shaft construction
Valuation:
N/A
Permit #:
388396
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Basement use to assembly/storage. 1s floor use to admin offices assembly storage and training. 2nd floor use to training accessory office and cafeteria
Valuation:
N/A
Permit #:
374582
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
For the replacement of floor joists to partial first floor as per approved plans. no other work under this permit
Valuation:
N/A
Permit #:
736036
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Amend permit # 399612 for hvac work. see a/p 401231 for plan
Valuation:
N/A
Permit #:
427304
Status:
COMPLETED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Interior clean out of debris replace doors and windows in existing openings
Valuation:
N/A
Permit #:
388402
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Delong Service Company Inc Reviews
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Verified License
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Delong Service Company Inc License info
Verified License
| HIC # | 2705156161 |
| Status | Active |
| State | Virginia |
| Type | Refrigeration (Ref) |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Delong Service Company Inc at the Virginia Department of Professional and Occupational Regulation.
This is a sample of licensing data; click here to access a complete history.
Verified License
| HIC # | 38398 |
| Status | Active |
| City | Philadelphia |
| Type | Contractor |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Delong Service Company Inc at the City of Philadelphia Licensed Contractors.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| HIC # | PA009141 |
| Status | Active |
| State | Pennsylvania |
- When BuildZoom last verified this license, it had an expiration date of July, 2025. Check the current license status of Delong Service Company 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
| HIC # | 27868 |
| Status | Active |
| State | Pennsylvania |
| Type | Contractor |
- When BuildZoom last verified this license, it had an expiration date of May, 2011. Check the current license status of Delong Service Company 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
| HIC # | 27868 |
| Status | Inactive |
| City | Philadelphia |
| Type | Plumber |
- According to the City of Philadelphia Licensed Contractors, 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 Delong Service Company Inc at the City of Philadelphia Licensed Contractors.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| HIC # | 31370 |
| Status | Inactive |
| City | Philadelphia |
| Type | Sheet Metal Technician |
- According to the City of Philadelphia Licensed Contractors, 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 Delong Service Company Inc at the City of Philadelphia Licensed Contractors.
This is a sample of licensing data; click here to access a complete history.
101
BuildZoom Score
Insured
| Insurer | State Farm Insurance |
| Insured up to | $1,000,000 |
29
Permits
- Building permit records show that Delong Service Company Inc has worked on 29 permitted projects.
Delong Service Company Inc Employees
JD
Joseph A. Delong
President
MG
Mihail I Giannaros
Owner
PD
Paul Delong
Vice President