Electrical permit history — 420 E 7th St

Commercial property

420 E 7th St

Built 1919 — 1910s commercial stock · last permitted panel/service work 2001 (finaled); a newer 2026 permit is issued · HVAC 2003 (finaled)

Permanent link: Electrical permit history for 420 E 7th St (aztucsonelectricalsolutions.com/property/117050880/420-e-7th-st-tucson-az-85705) · Public records last checked 2026-08-16

Parcel

117050880

Built

1919 (county record)

Jurisdiction

Tucson

Zoning

C-3

Assessor use

Retail Strip Center

Parcel size

0.31 acres

Building area

7,565 sq ft (assessor record)

Sewer

Connection on file (2008) (county sewer connection records)

Flood zone

X (shaded) — 0.2% annual-chance flood hazard (FEMA)

Historic preservation

Fourth Avenue Commercial Historic District — National Register district (City of Tucson)

Service on record

City records show the 2001 permit was finalized; the permit description states “ELEC:UPGRADE:100-200AMP(APA)” — an increase in capacity as described, not a confirmed installed rating.

See the property

Pima County orthophoto (Pictometry 2024 / PAG 2023 / NAIP 2023 mosaic) — parcel outlined in yellow. Aerials can predate recent work and show nothing about what is inside; context, not evidence.

Street ViewGoogle Maps satelliteGoogle Earth (3D, historical imagery) ↗

Is it time to upgrade?

• Electrical service & distributionCurrentA newer 2026 permit for the same system is recorded as “Inspections” — The work was permitted, but final completion is not confirmed. The permit description states “100A Electrical service upgrade to 10 units, tie into existing subs/ Master Permit: TC-COM-1223-02899 (408 E 7TH ST TUCSON, AZ 85705) Sub permits: See master permit for approved plans. TC-COM-0626-00829 (341 N HOFF AV TUCSON, AZ 85705) TC-COM-0626-00830 (343 N HOFF AV TUCSON, AZ 85705) TC-COM-0626-00831 (406 E 7TH ST TUCSON, AZ 85705) TC-COM-0626-00833 (410 E 7TH ST TUCSON, AZ 85705) TC-COM-0626-00834 (412 E 7TH ST TUCSON, AZ 85705) TC-COM-0626-00835 (414 E 7TH ST TUCSON, AZ 85705) TC-COM-0626-00840 (416 E 7TH ST TUCSON, AZ 85705) TC-COM-0626-00841 (418 E 7TH ST TUCSON, AZ 85705) TC-COM-0626-00842 (420 E 7TH ST TUCSON, AZ 85705)”. Last permitted 2001 (25 years ago). City inspection record: ELECTRIC - FINAL approved 2001-04-19. Contractor of record: DESERT HILLS ELECTRIC INC,*C. The permit describes an increase in capacity, which is the single best sign the electrical has actually been brought forward. Separately from replacement: NFPA 70E expects the arc-flash study to be reviewed at least every five years, or after any change to the service. T01EL00071 — ELEC:UPGRADE:100-200AMP(APA)
• Heating, cooling & mechanicalLikely dueLast permitted 2003 (23 years ago). City inspection record: MECHANICAL - FINAL approved 2004-03-04. Contractor of record: TECHNICAL BUILDING SERVICES INC. Packaged rooftop units work harder in Tucson than almost anywhere, so 12 to 15 years is a realistic service life rather than the 15 to 20 the industry quotes. Equipment from before about 2010 generally runs R-22, which has not been produced since 2020 — repairs mean reclaimed refrigerant at a price that often exceeds replacing the unit. T03ME00733 — REPLACE:FLOOR FURNACE
• Fire alarm & life safetyCurrentLast permitted 2020 (6 years ago). Panels and devices age out on their own schedule, and the code moves underneath them — a system that was compliant when installed is not automatically compliant now. T20FC00629 — INSTALL A UL 300, NFPA 17A COMPLAINT FIRE SYSTEM IN NEW TYPE I GREASE HOOD PER MANUFACTURES INSTALLATION REQUIREMENT
• RoofNot in this windowNothing in the permit records we read for this parcel that names this system. Roof age matters electrically too: it sets what can be penetrated for new rooftop units, conduit, or solar.

A found permit means a lot. A missing one means less. We read the City of Tucson’s own permit file, not a recent extract of it — back to about 2006, and into the 1990s on properties with that much history. Microfiche before then was never fully digitised. Every record links to the city’s official file. A blank line does not say nothing was done: work gets done without permits all the time. The only way to know what is actually installed is to look at it.

What that usually means electrically

• Era-based check — high priority

  Distribution gear this age is frequently past the point where the manufacturer still supports it. Breakers and fusible switches for obsolete lines can carry long lead times, which turns an outage into a shutdown. The permit record does not confirm this; an on-site inspection is required.

• Era-based check

  NFPA 70E expects arc-flash studies to be reviewed at least every five years, or after any change to the service. Buildings this age often have labeling that no longer matches the installed gear. The permit record does not confirm this; an on-site inspection is required.

• Worth confirming

  There is an electrical reconnect permit from 2018. The service was disconnected at some point and brought back — usually after a vacancy, a utility disconnect, or work that required the power off. Worth knowing what prompted it.

Most recent permit on record for this parcel: 2026-06-05 (TC-COM-0626-00829) — 100A Electrical service upgrade to 10 units, tie into existing subs/ Master Permit: TC-COM-1223-02899 (408 E 7TH ST TUCSON, AZ 85705) Sub permits: See master permit for approved plans. TC-COM-0626-00829 (341 N HOFF AV TUCSON, AZ 85705) TC-COM-0626-00830 (343 N HOFF AV TUCSON, AZ 85705) TC-COM-0626-00831 (406 E 7TH ST TUCSON, AZ 85705) TC-COM-0626-00833 (410 E 7TH ST TUCSON, AZ 85705) TC-COM-0626-00834 (412 E 7TH ST TUCSON, AZ 85705) TC-COM-0626-00835 (414 E 7TH ST TUCSON, AZ 85705) TC-COM-0626-00840 (416 E 7TH ST TUCSON, AZ 85705) TC-COM-0626-00841 (418 E 7TH ST TUCSON, AZ 85705) TC-COM-0626-00842 (420 E 7TH ST TUCSON, AZ 85705).

Permit history (69)

61 older records are not shown here. Show all 69 records — each links to its official file.

How to read the status column: Final / Complete / C of O — city records show the permit was finalized. Issued — the work was permitted, but final completion is not confirmed. Applied / In review / Approved / Fees paid — proposed, not completion. Expired — the permit expired without a confirmed final status. Void / Withdrawn / Canceled — not evidence the work was installed. Any other status is shown exactly as the issuing office records it, without a completion reading.

Code enforcement (26)

Code cases and housing-code violations recorded against this parcel, by category. Closed cases stay on the record, and most of these are closed — check the status column. We show the category and the official record number rather than the complaint text, which often names people who have nothing to do with the property.

Record numbers link to the City of Tucson’s official file. Highlighted rows are the ones that imply electrical work or an unpermitted-work finding.

This is an inference from public records — the year a structure was built, how it is classified, and what has been permitted. It is not an inspection, and nothing here confirms what is actually installed at this address. The only way to know is to look in the panel.

The contractor’s read is a plain-English brief of the record above, written by AI — what it shows across electrical, mechanical and the building itself, what is missing for the era, and what to verify on site.