300 31st Avenue, San Mateo, CA 94403

About this single-family home

Welcome to this beautifully remodeled 3-bedroom, 2-bath home (1620sf) with the ADDED BONUS of a detached ADU (341sf), providing a total of 1961sf of living space. Designed for modern living, the open-concept kitchen features a large island with seating and flows seamlessly into the dining and living rooms, perfect for everyday living and entertaining. The private bedroom wing includes a spacious primary suite with backyard views and two additional bedrooms sharing an updated bath. A versatile playroom adds extra flexibility. The detached ADU, complete with kitchenette and full bath, offers ideal space for guests, extended family, or a home office. Outdoor living shines with an expansive yard featuring a fire pit with built-in seating, a deck, lawn, and dedicated play space. Additional highlights include a two-car garage and prime location across from a pocket park and just a short walk to the newly reimagined Hillsdale Shopping Center. Move-in ready and thoughtfully upgraded, this home truly has it all.

Listing description from the October 2025 sale, as reported to CRMLS.

Sale history

$2,350,000

Sold October 2025 · listed $2,199,000, on market September 2025 · MLS #ML82021175 · Source: CRMLS

Listing Agent: Sternsmith Group · Listing Office: Compass · Contact: (650) 375-1111 · Bought with: Mattie Wei · RE/MAX Accord

$2,247,000

Sold July 2021 · listed $1,898,000, on market June 2021 · MLS #ML81850981 · Source: CRMLS

Listing Agent: Lana Morin · Listing Office: Intero Real Estate Services · Contact: (650) 931-8300 · Bought with: Sternsmith Group · Compass

$1,605,000

Sold April 2017 · listed $1,598,000, on market February 2017 · MLS #ML81639117 · Source: CRMLS

Listing Agent: Herb Schmulewicz · Listing Office: KW Advisors · Contact: (650) 627-3700 · Bought with: Lana Morin · Intero Real Estate Services

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