Electrical permit history — 427 E 20th St

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427 E 20th St

Built 1933 — pre-1950 knob-and-tube era · last permitted panel/service work 2024 (permitted, completion not confirmed)

Permanent link: Electrical permit history for 427 E 20th St (aztucsonelectricalsolutions.com/property/117082900/427-e-20th-st-tucson-az-85701) · Public records last checked 2026-08-17

Parcel

117082900

Built

1933 (county record)

Jurisdiction

Tucson

Zoning

R-2

Assessor use

Mixed Complex

Parcel size

0.29 acres

Living area

2,466 sq ft (assessor record)

Sewer

No connection on file (sewer or septic status not confirmed by the record — verify on site)

Flood zone

X — minimal flood hazard (FEMA)

Historic preservation

Armory Park Historic Residential District — National Register district (City of Tucson)

Typical original service for a 1933 home

approximately 30–60 A

Service on record

A 2024 permit was issued; completion is not confirmed in the available record; the permit description states “Electrical panel upgrade 60amp to 100 amp” — 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 & panelPermitted — completion not confirmedA 2024 permit specifies this work (the permit description states “Electrical panel upgrade 60amp to 100 amp”), but the available record does not show a final inspection. The work was permitted, but final completion is not confirmed. Official status: Inspections. City inspection record: last recorded inspection 2024-08-07; no approved final is shown. TC-RES-0124-00093 — Electrical panel upgrade 60amp to 100 amp
• Heating & coolingNot in this windowNothing in the permit records we read for this parcel that names this system. Cooling equipment works 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.
• Water heaterNot in this windowNothing in the permit records we read for this parcel that names this system. Water heaters are frequently swapped without a permit, so this line is especially weak evidence either way.
• RoofNot in this windowNothing in the permit records we read for this parcel that names this system.
• Plumbing work on recordNot in this windowNothing in the permit records we read for this parcel that names this system. Unremarkable — plenty of buildings never need a permitted plumbing repair.

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

  Knob-and-tube wiring may still be present in original, un-remodeled areas. It has no ground and is not rated for modern loads or insulation contact. The permit record does not confirm this; an on-site inspection is required.

• Era-based check — high priority

  Original services this age were 30–60 A fuse panels. Nearly every one still in place is undersized for a modern household. The permit record does not confirm this; an on-site inspection is required.

• Era-based check — high priority

  Branch circuits from this era are typically ungrounded two-wire — the reason you see two-prong outlets or ungrounded three-prong replacements. The permit record does not confirm this; an on-site inspection is required.

Most recent permit on record for this parcel: 2024-04-16 (TR-UTL-0424-00810) — WO T109065 - TEP REPLACING TWO POLES & 1 ANCHOR. 1 POLE IS IN THE ROW & THE OTHER ON PROPERTY OF 405 E 20TH ST THE HOLES ARE 6’ DEEP 22” DIAMETER. PLEASE NOTE AN ARCHEOLIGICAL MONITOR WILL BE REQUIRED AND THE CONTACT INFORMATION IS AVI BUCKLES, MA D: (520) 382-8903 C: (520) 419-3867..

Permit history (3)

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 (5)

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. See an error in this public-record report? Report a correction · About this data.

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.