Palo Verde: permit history and electrical signals

Palo Verde by the numbers

Among the 12 neighborhoods in this hub, Palo Verde ranks 10th for permit activity per home since 2022, 5th for panel and service upgrades per home (2 per 100 homes with a build year), and 9th for the share of pre-1974 housing.

Counts are City of Tucson GIS permit layers 85 (residential), 81 (commercial) and 102 (code enforcement) inside the neighborhood boundary, issued or opened on or after 1 January 2022 — the window those layers cover. Older permits exist in the City’s Property Research Online file and show up in the per-address report. Build years are the assessor’s published values, which stop at 2009. “Per 100 homes” divides by homes with a published build year; the comparison figure uses the same measure summed over the City’s 140 registered neighborhoods, not every parcel in the city.

When Palo Verde was built

• Before 195037%
• 1950–196438%
• 1965–19738%
• 1974–19899%
• 1990–19951%
• 1996–20075%
• 2008 or later1%

Highlighted bands are the eras that carry a known wiring or panel issue in Tucson housing.

Knob-and-tube and ungrounded circuits

About 37% of the homes with a published build year here predate 1950. In original, un-remodeled areas that can still mean knob-and-tube wiring — no ground, not rated for modern loads, and not safe in contact with blown-in insulation. It is also why so many houses in this part of town still have two-prong outlets, or three-prong outlets with nothing behind the ground pin. Both are fixable, and neither is an emergency on its own. That is the 5th-largest share of the 12 neighborhoods in this hub.

Post-war services and ungrounded circuits

About 38% went up between 1950 and 1964 — Tucson's post-war boom. Services from those years were 60 to 100 amps, often a fuse panel since swapped for breakers without the service itself ever being enlarged. Grounded branch circuits did not become the norm until the early 1960s, and the cloth jacket on that era's cable embrittles in a Tucson attic. That is the 7th-largest share of the 12 neighborhoods in this hub.

Permit activity by year

Recent permits worth noticing in Palo Verde

• panel2026-08-13 · TC-RES-0726-04180 — Mpu 100-200
• panel2026-08-08 · TC-RES-0726-03821 — service upgrade from 100amp to 200 amp
• hvac2026-07-29 · TC-RES-0726-04144 — HVAC REPLACEMENT: SWAPPING OUT AN OLD 1-TON MINISPLIT CONDENSER UNIT WITH A NEW 1-TON MINISPLIT CONDENSER UNIT
• remodel2026-05-26 · TC-RES-0226-00943 — Porch and Remodel Unpermitted Porch enclosure into Living Room and Bedroom Suite
• remodel2026-05-19 · TC-RES-0326-01069 — ADU located in NE corner of residential lot, replacing old carport. Primary access via alley, single level.
• solar2026-04-30 · TC-RES-0426-02047 — Install a 0.76 kW DC rooftop addition to the existing 5.1 kW DC rooftop solar electric system. Also installing a new 10.
• remodel2026-04-29 · TC-RES-0326-01544 — The remodel of an existing ADU
• remodel2026-04-27 · TC-RES-1125-05548 — Family, Laundry, two Bedrooms & Bathrooms, and Garage Addition

Permit number, date, type and the City’s own description — nothing else. Each links to the official record.

Example property reports in Palo Verde

Real parcels in the neighborhood with a permit history deep enough to read. Each opens the full report.

• 1150 N Richey Bl — built 1946, 27 permits on record
• 3201 E Seneca St — built 1972, 26 permits on record
• 3526 E Bellevue St — built 1947, 5 permits on record
• 1220 N Dodge Bl — built 1959, 8 permits on record

Look up an address in Palo Verde

Any address in Pima County works. You get the parcel, the year built, the full permit history (City file back to about 2006), the code cases, and what each system’s record implies — plus an AI read of the whole record and of the plan sheets behind a City permit.