Home maintenance for Anaheim homeowners
Anaheim is two maintenance cities under one name: flat, dense west and central neighborhoods where about a quarter of homes predate 1960, and Anaheim Hills, master-planned from 1971 and the only part of the city with mapped Very High fire hazard land. The city runs its own water utility, and its groundwater averages about 18 grains per gallon of hardness.
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Home maintenance help in Anaheim
Half the homes in Anaheim are more than 50 years old, so much of the work here is catching worn pipes, wiring and roofing before they fail. OakTend gives Anaheim homeowners free home maintenance help during our preview: add your house once and get a reminder when each check is due.
Homes in Anaheim, at a glance
- Population
- About 344,000 to 347,000 peopleCensus Vintage 2024 estimate and the 2020 Census count. Source: U.S. Census Bureau
- Median year built
- 1973Source: Census Reporter, ACS 2020-2024 five-year table B25035
Anaheim runs up into the foothills, so parts of the city take more heat, more wind funneled through the canyons, and more wildfire exposure than the flat parts of the county.
When homes were built
- Homes counted
- About 110,705
- Built before 1960
- 26.7%
- Built in the 1960s
- 15.3%
- Built in the 1970s
- 23.1%
- Built in the 1980s
- 11.2%
- Built in the 1990s
- 9.4%
- Built 2000 or later
- 14.3%
Two thirds of the city is older than 1980, the age for panels, sewer laterals and original plumbing.
Source: Census Reporter, ACS 2020-2024 five-year tables B25034 and B25035
Weather
The city's planning documents put the historical average annual high near 76 degrees, projected toward 80 by 2064, on about 14 inches of rain a year. Heat on roofs, attics and air conditioning is the seasonal load here, not freezing.
Fire service
Anaheim Fire & Rescue is the city's own department: more than 250 fire professionals and 11 stations covering about 50 square miles, including homes, commercial areas and land that meets the wildlands.
Real neighborhoods in Anaheim
- Anaheim Colony
- West Anaheim
- Platinum Triangle
- Anaheim Canyon
- Anaheim Hills
Anaheim Colony is the city's first and largest historic district, about 1.8 square miles matching the German colony founded in 1857, with over 1,000 qualifying buildings. West Anaheim is older, flatter housing, the Platinum Triangle around the stadium is where most new high-density housing is going up, and Anaheim Hills is the hillside east end.
Water, permits, and local rules in Anaheim
Water
Anaheim Public Utilities blends Orange County basin groundwater with imported water, and groundwater served over 80 percent of customers in 2025. Hardness depends on which water reaches your address: the city's 2026 report puts its groundwater at 316 ppm, about 18 grains per gallon, and water treated at its Lenain plant at 298 ppm, about 17 grains, with detections from 162 to 431 ppm.
Anaheim Public Utilities · Source: Water quality report
Permits
Anaheim Next runs on Accela, but only three permit types are fully self-service online: residential solar, EV chargers and electrical panel upgrades. Everything else, water heaters and HVAC included, goes through staff review.
City of Anaheim Building Division permit portal · Source: City building division
Wildfire zones
The city's adopted map puts Very High Fire Hazard Severity Zone land in Anaheim Hills and the unincorporated sphere east of Highway 241, and Very High is the only Cal Fire tier inside city limits. The municipal code also designates a wildland-urban interface fire area east of the 55 and south of the 91. Central and western Anaheim sit outside it.
Building rules in the fire zone
Inside that zone, new construction, additions and some remodels fall under California Building Code Chapter 7A for roofing, attic vents, exterior walls, windows and decking, plus 100 feet of defensible space and an ember-resistant five feet around the house. A reroof or window order in the hills is a code decision, not just a price one.
Landslides
The city records two Anaheim Hills landslides: the 1993 Santiago slide, which destroyed more than 30 homes after an El Nino storm, and the 2005 Ramsgate slide, which took three homes and a private street during a 20-day rain event. Eastern slopes rate high for landslide risk, on the same ground as the fire zone, and hillside grading needs an approved grading plan and a geological report.
Flood zones
FEMA 100-year and 500-year floodplains cover parts of Anaheim, mostly along the Santa Ana River and Carbon Creek on the west side and the 91 corridor in the east.
Source: City of Anaheim General Plan PEIR, hydrology chapter
Mello-Roos tax
Most of Anaheim predates the 1982 law that created Mello-Roos districts, but newer infill such as the high-density housing around the stadium came long after it, so there is no citywide answer. The county Treasurer-Tax Collector's parcel lookup has yours.
Source: OC Treasurer-Tax Collector
What OakTend does
A maintenance plan built around your home
OakTend turns your home's age, systems, and history into a plan of what to check and when, not a generic checklist.
Ask OakTend anything about your house
Get answers about your systems, their ages, and what's likely to need attention next, any time.
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Guides for Anaheim homeowners
Roof replacement cost
In the Anaheim Hills fire zone, the roofing material is set by Chapter 7A.
Electrical panel upgrade cost
Two thirds of Anaheim predates 1980, and the panel permit can be issued fully online.
Water heater replacement cost
City groundwater averages about 18 grains per gallon, hard on tanks.
Orange County home maintenance checklist
Includes the defensible space work a Very High zone lot in the hills needs.
Maintenance that matters in Anaheim
Repiping a house in Orange County
The median Anaheim home was built in 1973. If a house that age has had more than one leak, read when a whole-house repipe makes sense.
Fire hazard severity zones in Orange County
Check whether your Anaheim street is in a mapped fire hazard severity zone.
How to clean your gutters before the rain
Clear the gutters before the first rain and after a Santa Ana event.
Does your Orange County city have hard water?
Anaheim's water comes from Anaheim Public Utilities. See how hard it is, from the provider's own report.
Nearby cities
Questions from Anaheim homeowners
Has Anaheim Hills burned before?
Yes. The 2008 Freeway Complex fire crossed the 91 into Anaheim Hills and damaged or destroyed homes and apartments there, and the 2017 Canyon Fire 2 started off East Santa Ana Canyon Road west of Gypsum Canyon.
What does Anaheim require for a water heater replacement?
A plumbing permit, reviewed by staff rather than issued online. The city's bulletin offers an over-the-counter plan check if you bring a gas-pipe isometric drawing in its format, requires a pressure test at final inspection on any new gas run over six feet, and requires planning and zoning approval for a heater moved outside the building.
Local facts on this page last checked .