Rare infill residential development opportunity in Castro Valley's highly desirable Parsons Estates neighborhood. ±1.58 acre site with previously approved tentative map approval for four premium single family residential lots. Proposed lot sizes ranging from approximately 14,000-18,000 sq ft support a differentiated, larger home product in a supply constrained submarket with strong end user demand. The project offers the opportunity to develop 3,000+ sq ft homes with potential ADU/JADU configurations (buyer to verify), enhancing flexibility and overall project economics. The property may also present additional long term SB9 optionality, offering alternative development pathways subject to buyer verification and County approval. Nearby larger homes and strong local demand support an attractive end product strategy. Strategically located with convenient access to I-580, I-680, BART, Silicon Valley, Oakland, and San Francisco, positioning the site well for commuter oriented buyers seeking premium suburban housing.