Historic Los Altos apartments at 4121 Wilshire Blvd. to add ADUs

The Los Altos Apartments in Windsor Square, a Spanish Colonial landmark that is listed on the National Register of Historic Places, is slated to add new housing, according to plans unearthed via ATC.

Completed in 1925 at 4121 Wilshire Boulevard, the five-story building has played host to a who's who of Hollywood luminaries in its 100 years of existence. A 1990 restoration transformed the building into a mixed-income housing complex featuring a total of 75 homes.

Architectural plans submitted recently to Los Angeles Planning officials indicate that building owner Allen Gross is now looking to take advantage of state law to convert unused space within the structure into more housing. A basement area at the southeastern corner of the property is to be transformed into eight accessory dwelling units, ranging from 364 to 597 square feet in size.

Plans indicate that Peter T. Erdeyli & Associates, Inc. is designing the ADUs.

Past projects from Gross include the conversion of a shuttered Downtown department store into housing more than a decade ago.

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• Windsor Square (Urbanize LA)