Welcome to 2461 Saint Pierre Avenue — a charming California bungalow with ADU nestled in the heart of Altadena! This rare income-generating property offers two well-maintained 2-bedroom, 1-bath units, perfect for owner-occupants, investors, or multi-generational living. The front unit features a light-filled living area with original character, hardwood flooring, and a spacious kitchen. The ADU, accessible via a private entrance, includes its own full kitchen, living room, and separate meter — providing excellent rental income potential or flexibility for extended family. Recent upgrades include new copper plumbing, updated heating systems, and refreshed paint. The property also features a gated driveway with dual access, accommodating multiple vehicles. Located minutes from Old Town Pasadena, JPL, the Rose Bowl, Caltech, and scenic hiking trails — this property combines urban convenience with the natural beauty of the foothills. Whether you're looking to live in one unit and rent the other, fully lease both for passive income, or explore development opportunities, this Altadena gem checks all the boxes.