Located in one of Altadena's most coveted neighborhoods, this expansive half-acre parcel offers a unique opportunity to create a custom estate in a premier setting. The lot is predominantly flat and showcases breathtaking panoramic views of city lights and the San Gabriel Mountains. Previously the site of a 3,929 square-foot residence and once home to a world-renowned musician and former Composer-In-Residence at the LA Philharmonic, it is now a blank canvas poised for redevelopment. The current Altadena Community Standards District Ordinance allows for a gross structural area of up to 6,512 square feet, with additional allotments for a garage or ADU, providing ample space for a visionary design. Please note that this is a drive-by-only listing; for safety reasons, on-site access is restricted at this time. Phase I of the property clean-up has been completed, and Phase II is scheduled to follow.