Almost every office a Pasadena rewire deals with belongs to the city. Building & Safety issues the permit and inspects the work, Pasadena Water & Power supplies the electricity, and Pasadena’s own landmark district rules cover the outside of the house. LA Knob and Tube replaces knob and tube wiring in Pasadena, from the Craftsman blocks of Bungalow Heaven and Historic Highlands to Garfield Heights, Washington Square and Bellefontaine, and a knob and tube replacement in Pasadena is planned around those offices and the fees they publish.
The city also has a lot of the housing where this wiring survives. The Census Bureau counts 18,066 Pasadena homes built before 1940, 28.6% of the city’s housing, and 9,535 of them are owner-occupied single-family houses. In ZIP code 91104, the northwest Pasadena area around Bungalow Heaven, 51.6% of all homes predate 1940, the second-highest share of any ZIP code tested in the region.
A different permit office and a different utility
LADBS has no role in Pasadena, and neither does LADWP. The City of Pasadena’s Building & Safety division issues the electrical permit and its inspectors check the work, while Pasadena Water & Power is a city-owned utility with its own service rules and its own published charges.
That matters most when knob and tube replacement grows into a service upgrade. Replacing branch circuits does not change the meter, and a new panel does not remove any old wiring by itself. Where a house still runs on a small fused service, though, the new circuits can outgrow it, and the meter, mast or service size changes. At that point Pasadena Water & Power is part of the schedule. Its requirements for residential upgrades were not something the research behind this page could retrieve, so they are confirmed with the utility for each address before the panel work is priced. The panel upgrade page explains how to tell whether the house needs one at all.
What Pasadena publishes about fees
Pasadena is one of the few places where both halves of the paperwork cost are public. The city’s fee schedule charges electrical permits by the item: a $78 processing fee, $28 for the first 10 outlets, switches or fixtures, $8 for each one after that, $21 for each breaker and $73 for a service or panel up to 200 amps.
The same schedule lists Pasadena Water & Power’s charges for small residential services: $1,238.19 for an overhead service of 200 amps or less, and $3,190.81 plus civil construction for an underground one. Whether a particular upgrade on an existing service triggers those charges is confirmed with the utility. The permit figures make one point clear: because Pasadena charges per device and per breaker, a whole-house rewire with dozens of outlets carries a larger permit than a partial job on a few circuits. The cost guide shows how permits sit alongside labor, access and plaster restoration.
Landmark districts and the outside of the house
Pasadena’s landmark district map shows 30 districts. Bungalow Heaven was the first, designated in 1989, and it was added to the National Register of Historic Places in 2008 with 522 contributing buildings. Garfield Heights, Historic Highlands, North Pasadena Heights, Washington Square, Rose Villa-Oakdale, Craftsman Heights, Bellefontaine and Governor Markham are among the others.
Pasadena’s district rules work separately from the HPOZ system in Los Angeles, and the research behind this page did not confirm how Pasadena treats interior electrical work. That is checked per address with the city before the permit. The likely friction is on the exterior. A rewire happens inside walls, floors and the attic, while a new meter, a taller mast or a relocated panel can land on a wall that faces the street. Planning the service location early keeps the interior work from waiting on a design question. The historic homes guide covers how preservation review and electrical work usually fit together.
Heat, attics and when to schedule
Pasadena is hot by Los Angeles standards. NOAA’s climate normals put the average August high at 91.3°F, against 84.0°F in downtown Los Angeles, and Pasadena averages 74 days a year at 90°F or above, nearly three times downtown’s 25.5. An attic over a dark roof runs hotter than the air outside.
Attic routes are central to most knob and tube jobs, because second-floor and ceiling circuits are reached from above. In a Pasadena summer that work is slow, which makes the cooler months the easier time for attic-heavy jobs, when daytime highs at the same station sit in the high 60s. Heat also bears on insulation. California permits insulation around knob and tube only after a California-licensed electrical contractor surveys and certifies the wiring, which is why the attic insulation page usually points to replacing the attic circuits first.
How a Pasadena job usually runs
The first visit maps the house: which outlets and lights still run on knob and tube, which old runs are dead, where later wiring was spliced into the original system, and how the panel, attic and crawlspace can be reached. A one-story bungalow with a raised floor is often reachable from both above and below. A two-story house on a hillside lot may need more openings in plaster, and the quote lists each opening and who patches it. The knob and tube inspection is that same map, done before anyone commits to a scope.
The permit goes to Pasadena Building & Safety, and an inspector checks the new wiring before walls are closed and again at the end. Circuits are replaced in sequence so most of the house has power on most days, which the guide to living at home during rewiring describes room by room. Where plaster has to be opened, the plaster wall rewiring page explains how openings are placed at boxes and at framing crossings, and how much restoration follows.
After the Eaton Fire
The Eaton Fire began on January 7, 2025, and CAL FIRE reports it destroyed 9,419 structures in Altadena and Pasadena. Houses rebuilt since then go through permitting under current code and will not have knob and tube. Pre-war houses that were not destroyed still have whatever wiring they had before, and the Census counts on this page were collected before the fire, so they overstate today’s older housing in the burned areas. Altadena itself is unincorporated and permitted by Los Angeles County, not by Pasadena.
Insurance and home sales
Residential California FAIR Plan policies in 91104 nearly doubled between September 2021 and September 2025, from 215 to 415. The FAIR Plan does not publish reasons, and nothing ties that growth to wiring, but it shows how tight coverage has become for owners shopping for a policy. Carriers differ on knob and tube, so a written circuit map helps when an agent asks what is still live. Since January 1, 2026, sellers give buyers a state electrical advisory under Civil Code section 1102.6i, and the buyer’s guide covers what that means in escrow.
Next door, South Pasadena has its own building division and is served by Southern California Edison, while Eagle Rock and Highland Park fall under LADBS and LADWP.