Is JF HIERHOLZER MECHANICAL & ELECTRIC INC a real contractor?

JF HIERHOLZER MECHANICAL & ELECTRIC INC appears in public building-permit records with 20 permits filed through 2026 in and around City of Philadelphia, PA. Permits are filed with local government before work begins, so this is a matter of public record, not a self-reported listing.

How is JF HIERHOLZER MECHANICAL & ELECTRIC INC's track record verified?

Every figure on this page comes from building permits pulled from municipal records and matched to JF HIERHOLZER MECHANICAL & ELECTRIC INC by the contractor name on each permit. Permit records cannot be purchased or faked the way online reviews can, which makes them a stronger signal of real, completed work.

Is JF HIERHOLZER MECHANICAL & ELECTRIC INC licensed and insured?

This profile is built from permit records, which confirm permitted work but do not include license status. JF HIERHOLZER MECHANICAL & ELECTRIC INC has not claimed this profile to add license or insurance details. Confirm licensing directly with your state or local board before hiring.

How recent is JF HIERHOLZER MECHANICAL & ELECTRIC INC's work?

The most recent permit on record for JF HIERHOLZER MECHANICAL & ELECTRIC INC is dated 2026-05-08, with 20 permits on file in total.

City of Philadelphia, PA

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JF HIERHOLZER MECHANICAL & ELECTRIC INC

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Permit records

Median project value

Not on record

Most recent job

2026-05-08

Is JF HIERHOLZER MECHANICAL & ELECTRIC INC legit?

What the public permit record shows, not self-reported reviews.

Is JF HIERHOLZER MECHANICAL & ELECTRIC INC a real contractor?: JF HIERHOLZER MECHANICAL & ELECTRIC INC appears in public building-permit records with 20 permits filed through 2026 in and around City of Philadelphia, PA. Permits are filed with local government before work begins, so this is a matter of public record, not a self-reported listing.
How is JF HIERHOLZER MECHANICAL & ELECTRIC INC's track record verified?: Every figure on this page comes from building permits pulled from municipal records and matched to JF HIERHOLZER MECHANICAL & ELECTRIC INC by the contractor name on each permit. Permit records cannot be purchased or faked the way online reviews can, which makes them a stronger signal of real, completed work.
Is JF HIERHOLZER MECHANICAL & ELECTRIC INC licensed and insured?: This profile is built from permit records, which confirm permitted work but do not include license status. JF HIERHOLZER MECHANICAL & ELECTRIC INC has not claimed this profile to add license or insurance details. Confirm licensing directly with your state or local board before hiring.
How recent is JF HIERHOLZER MECHANICAL & ELECTRIC INC's work?: The most recent permit on record for JF HIERHOLZER MECHANICAL & ELECTRIC INC is dated 2026-05-08, with 20 permits on file in total.

Trades on record

remodel Demolition

Recent permitted projects

electrical work for cooling towers. ( MP-2026-001869 2 TOWERS)City of Philadelphia · 2026
Emergency Installation of qty - (3) 480volt 3 phase 60KW electric Heaters. We will connect to the existing breakers using SOOW cable. The heaters will be in operation for up to one month according to the 2017 NEC.City of Philadelphia · 2024
Demo existing lighting and receptacles, Provide new lighting package and receptacles. Provide power to fan coil units. Installation shall comply with 2017 NEC.City of Philadelphia · 2024
Replace 1 laboratory sink and all associated plumbing appurtenance in kind and replace 2" and 1 1/2" sanitary piping to a separate laboratory sink in kind.City of Philadelphia · 2024
Replacement of lighting fixtures and controls. Replace multiple electrical circuits.City of Philadelphia · 2024
Disconnect and remove existing non medical Natural Gas, Vacuum, Air, and Domestic Water. Install 1 new cabinet mounted sink and 1 faucet according to the 2018 PPC and per plans.City of Philadelphia · 2024
REPLACE 1-1/2" BACKFLOW DEVICE.City of Philadelphia · 2024
Plumbing Permit for combo SP-2023-000350

Permit activity in City of Philadelphia

Busiest remodeling contractors · 2025 Busiest remodeling contractors · 2024

Area served

City of Philadelphia

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Track record sourced from public building-permit records. Figures reflect permitted projects, not self-reported work. Listed on Proven Pros.