First time on the market in over 50+ years! Opportunity knocks in one of the San Gabriel Valley’s most sought-after markets. Situated on a generous lot in a high-demand area, 3777 Brookline Ave presents an exceptional opportunity for investors, builders, or buyers looking to unlock the full potential of land in a thriving community. The property sits on a spacious parcel with strong development potential, making it ideal for those exploring options such as expansion, adding an ADU, redevelopment, or creating a multi-generational living setup (buyer to verify with city). With land becoming increasingly scarce in the area, large lots like this offer the flexibility and long-term upside that savvy investors seek. Located in a prime pocket of Rosemead, the home benefits from close proximity to major freeways, employment centers, shopping, and dining, all of which continue to drive strong rental demand and potential for long-term property appreciation throughout the San Gabriel Valley. Whether you're looking to renovate, expand, build additional units, or hold for future growth, this property represents a rare chance to capitalize on lot size, location, and market momentum. Opportunities like this don’t come around often—bring your vision and explore the possibilities.