A rare opportunity in the sought-after Sunnybrae neighborhood of San Mateo, 1018 10th Avenue offers endless potential on an expansive lot. This 2-bedroom, 1-bathroom home is in its original condition, ideal for those looking to renovate or develop. The large lot provides excellent ADU (Accessory Dwelling Unit) potential, perfect for rental income, extended family, or a home office. Inside, original hardwood floors and vintage details await transformation. The traditional floor plan includes a light-filled living room and a functional kitchen ready for modernization. The spacious backyard offers ample room for outdoor living or future expansion. A detached garage provides additional storage or conversion potential. With close proximity to parks and downtown San Mateo's dining and shopping, plus easy access to major highways and public transit, this property is perfect for investors, developers, or those looking to create their dream home.