Electrical permit history — 641 W Ocatillo Av

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641 W Ocatillo Av

Built 1935 — pre-1950 knob-and-tube era · no permits on record for this parcel

Permanent link: Electrical permit history for 641 W Ocatillo Av (aztucsonelectricalsolutions.com/property/40125030a/641-w-ocatillo-av-tucson-az-85321) · Public records last checked 2026-08-17

Parcel

40125030A

Built

1935 (assessor record — effective construction year, which can move after a major remodel)

Jurisdiction

Unincorporated Pima County

Zoning

CR-4

Assessor use

Sfr Grade 010-2 Rural Subdivided

Parcel size

0.31 acres

Living area

1,368 sq ft (assessor record)

Cooling

Evaporative (assessor record)

Heating

Other (assessor record)

Roof

Metal (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)

Typical original service for a 1935 home

approximately 30–60 A

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 & panelNot in this windowNothing in the permit records we read for this parcel that names this system. That does not tell you the service is original — only that nothing has been permitted here recently. The build year is the better clue, and it is above.
• Heating & coolingNot in this windowNothing in the permit records we read for this parcel that names this system. The assessor records cooling as Evaporative and heating as Other. 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. The assessor records the roof as Metal.
• 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. This parcel is in unincorporated Pima County, so we read the county’s own permit system — including its historical permits, which reach back into the 1990s where they exist. Every record links to the county’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.

Recorded sales (1)

Recorded sales are the sales the Pima County Assessor has on file from affidavits of property value — not every transfer, not listings, and not a valuation. Parties are never shown here. A sale with no permitted electrical work since is worth knowing before the next sale or a remodel.

Nothing online for this address — but the county's online file holds 39 records for other addresses on this street, so this looks like a gap in the county's records migration rather than evidence about the property. Older county permits were only partially moved online; the authoritative check is a records request to Pima County Development Services.

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.