Altadena CA
265 active listings out of 13K total properties we track across 3 Altadena ZIPs — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.
Download Altadena, CA property data
12,505,422 property records for all of California — address, beds/baths, sqft, year built, status, list and last-sale price, price and tax history. Parquet or CSV.
Files are published by ZIP, county and state; this city is inside the state file.
Monthly snapshot · 1.4 GB Parquet · CSV (2.2 GB)
Records keep changing after a snapshot is compiled.
Rebuilt every day · same columns, same file layout
While you're here, take in the bigger picture — maps below show Los Angeles metro, not just Altadena. Same company, same dataset, different resolution.
Inventory breakdown
Distribution of the 265 currently-active listings in Altadena, CA. Full dataset covers 13K properties — listings, off-market homes, rentals, and full history.
ZIP codes in Altadena
Drill into any ZIP for hex-level breakdowns.
Nearby cities
Other California cities within driving distance.
Get Altadena, CA data in your app
GET https://api.straply.com/v1/markets/city/altadena-ca
Authorization: Bearer $STRAPLY_KEY{
"city": "altadena-ca",
"total_tracked": 12762,
"active": 265,
"median_list": 996500
}Altadena, CA real estate: market summary
As of November 2026, Straply tracks 12,762 homes in Altadena, CA, with 265 active for sale at a median list price of $996,500 (~$637/sq ft). Notably, the market is cooling — the median sale price is down 9% year over year.
- Median list price
- $996,500
- Median $/sq ft
- $637
- Active listings
- 265
- Median sale price
- $855,000 (-9% YoY)
- Properties tracked
- 12,762
Frequently asked: Altadena, CA real estate
What is the median home price in Altadena?
The median list price in Altadena, CA is $996,500 (about $637 per square foot), based on 265 active listings tracked by Straply as of November 2026.
What price range are homes in Altadena?
Active listings in Altadena, CA concentrate in: 32% $1m–$2m and 24% $500k–$750k.
Are home prices in Altadena going up or down?
The median sale price is $855,000, down 9% year over year. Straply tracked 332 sales here over the past 12 months.
How many homes are for sale in Altadena?
Straply is tracking 265 active listings in Altadena, CA out of 12,762 properties on record as of November 2026.
How old are the homes in Altadena?
Most homes in Altadena, CA were built in the 1940s. About 7% were built after 1980, while 37% predate 1940. The newest tracked home dates to 2026.
What types of homes are in Altadena?
Altadena, CA is mostly single-family homes (54% of listings). Also common: lots / land 38%, multi-family homes 6%.
How many bedrooms do homes in Altadena typically have?
The most common size in Altadena, CA is 3 bd.
What areas are near Altadena?
Nearby markets Straply also tracks include Pasadena, Glendale, La Canada Flintridge, Tustin.
Data as of November 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.