Snapshot
Population
41,705
US Census ACS, 2024 / FBI UCR Table 8, 2024
Median home price
$1,576,457
Redfin, 2026-08
Median rent
$2,355/mo
US Census ACS, 2024
Crime / 1k
Data pending
Market
Price / sq ft
$755
Redfin, 2026-08
Months of supply
2.3
Redfin, 2026-08
Median days on market
41
Redfin, 2026-08
Renter-occupied
23.1%
US Census ACS, 2024
Median household income
$128,720
US Census ACS, 2024
Housing units
15,815
US Census ACS, 2024
Developments
2214 N. Windsor Avenue
54 unitsA 54-unit mixed-use building fully entitled before the Eaton Fire sold for about $6.25 million in July 2026, with the buyer pursuing a 52-unit fully affordable redesign for fire survivors while the original entitlements stay valid.
Agave
58 unitsAgave, a 58-unit permanent supportive housing project on the Lake Avenue corridor, was mid-construction when the Eaton Fire damaged it, and is now leasing toward a Winter 2026 finish.
What you can build here — ADU
Unincorporated; LA County Title 22 controls. Typical SFR lot: 1 attached ADU + 1 detached ADU + 1 JADU. SB9 dual units allowed outside VHFHSZ and outside Eaton Fire boundaries (EO N-32-25). State 750 SQFT impact-fee and 500 SQFT school-fee exemptions apply. Ministerial ADU clock is 60 days; fire rebuild plan review goal <10 business days.
§22.140.640. Last verified 2026-08-18. Not legal advice — confirm current requirements with Altadena's planning department. See the statewide ADU floor every city sits on top of.
What you can build here — zoning standards
| Zone(s) | Density | Height | Setbacks F / S / R | Lot coverage | |
|---|---|---|---|---|---|
| Single-family | R-1 (6,000–40,000 sf min by suffix) | 1 du/lot (~5–8.7 du/ac by suffix) | 30–35 ft / <2 stories | 20' avg (min) / 5–10' / 10–25' | 35–45% |
| Duplex | R-2 | 2 units/lot (~14 du/ac) | 20–30 ft / 2 stories | 20' avg / 5–15' / 10–20' | ~40% |
| Townhome | R-3 / Planned residential | ~16–30 du/ac density-bonus eligible | 35 ft base | Per zone (varies) | Per zone |
| Multifamily | R-3 | ~16–30 du/ac | 35 ft | 15' / per zone / per zone | Per zone |
| R-4 | Higher density with overlays | 35+ ft with approval | Per zone | Per zone |
Parking · SFR 2 covered; Duplex 1.5 covered + 0.5 uncovered/unit; MF 1.5–2 covered + guest (varies).
Overlays to check · SB 9 lot-split eligible · Density Bonus Law applicable · Hillside Overlay · Historic Overlay · CSD overlays (Altadena CSD modifies R-1 yards/height)
Base zoning — always check for a project-specific overlay or density-bonus increase. Not legal advice. LA County Title 22 Ch 22.18 (base residential zones), Altadena CSD 22.306.070-A/B, DRP zoning summary. Last verified 2026-08-21. Full zoning code
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