Wednesday, July 23, 2025

L.A. County Supervisors Designate Altadena’s First Historic District

An image of the boundaries of the Historic Highlands Landmark District (Source: LA County Regional Planning)

The Los Angeles County Board of Supervisors on Tuesday voted to approve the County’s first-ever historic district and landmark designation in Altadena, marking a milestone in the preservation of the area’s architectural and cultural heritage.

The newly adopted ordinance adds the northern portion of the Historic Highlands neighborhood to Title 22 (Planning and Zoning) of the Los Angeles County Code, officially recognizing the Historic Highlands Historic District. The district comprises 77 parcels, primarily early-20th-century single-family residences, and enters the County Register effective immediately upon adoption.

The designation reflects the recommendations of the Historical Landmarks and Records Commission and the Regional Planning Commission, following years of community engagement and local advocacy. More than 50% of property owners in the area supported the proposal, exceeding the County’s threshold for historic district consideration.

“Altadena recently suffered a great loss, and it is especially meaningful to take this action now to ensure that the community’s historic treasures are preserved,” said Supervisor Kathryn Barger. “Today’s vote affirms our commitment to honor Altadena’s past while safeguarding it for future generations.”

The Historic Highlands neighborhood is noted for its concentration of Craftsman, Spanish Colonial Revival, Tudor, and other period styles. Its development during the 1920s economic boom transformed subdivided orange groves into a thriving suburban community. Though the area was not impacted by the Eaton Fire, residents have long expressed a desire to protect the neighborhood’s historic integrity.

Preservation guidelines established under the new district will help maintain the area’s unique character while allowing for thoughtful upgrades and responsible growth. County officials will notify affected property owners of the designation’s implications.

“This is a proud moment for Altadena,” Barger added. “By formally recognizing the Historic Highlands as the County’s first historic district, we are setting a precedent for celebrating the history embedded in our unincorporated communities.”