Property Electrical Profile
Type in an address and see what public county records suggest about its electrical service — the wiring era, the panel brands common to it, the service size it was probably built with, and what has actually been permitted since. Free, no sign-up, and it works for homes and commercial property across Tucson and Pima County.
Why the year a building went up tells you so much
Electrical work is governed by the code in force the day it was installed, and almost nothing forces an existing building to catch up. So the build year is a genuinely good predictor of what is behind the walls — and of what will stop a permit the first time you add real load.
- Before 1950 — knob-and-tube may survive in untouched areas; services were 30–60 A; branch circuits are usually ungrounded.
- 1965–1973 — the solid aluminum branch-circuit window. It is a known hazard at the terminations and needs an approved repair, not a wire nut.
- Into the 1980s — Federal Pacific Stab-Lok and Zinsco panels were still being installed. Both have failure-to-trip histories and no reliable modern breaker supply.
- Before 1996 — GFCI protection at kitchen counters was required only within 6 feet of the sink (1987 code); it did not reach every counter receptacle until 1996. AFCI protection did not enter the code until 1999 (bedrooms, effective 2002) and did not reach most living areas until 2008.
None of that proves what is in your panel. It tells you what to go look for — and whether to expect a service upgrade before an EV charger, a heat pump, or a casita.
Where the data comes from
Everything above is public record, read live from the City of Tucson and Pima County GIS services: the county address file, the assessor’s parcel and land-use records, and the city’s building permit history. Parcel, zoning, jurisdiction, and use are available county-wide. Year built is published only for properties inside Tucson city limits — outside them, the tool asks you for the decade instead and gives you the same read.
We don’t store the address you type. Nothing is sent to us unless you click through to the contact form yourself, and you can see exactly what goes with it before you send it.
The authoritative record for any parcel is the Pima County Assessor.
Curious how your area compares? The Tucson neighborhood electrical guide has build-year and wiring-era data for 140 registered neighborhoods.