Homes under $400K in San Mateo, CA

6 for sale · 10 homes listed · Updated November 9, 2026

• 1 Baldwin Avenue Unit 816, San Mateo 94401 $319,000 · 1 bd · 2 ba · 1,100 sqft
• 1 Baldwin Avenue #816, San Mateo 94401 $319,000 · 1 bd · 2 ba · 1,100 sqft
• 1 Baldwin Avenue, San Mateo 94401 $299,000 · 1 bd · 1 ba · 813 sqft
• 1 Baldwin Avenue 915, San Mateo 94401 $299,000 · 1 bd · 1 ba · 813 sqft
• 1 Baldwin Avenue #915, San Mateo 94401 $299,000 · 1 bd · 1 ba · 813 sqft
• 1 Baldwin Avenue 816, San Mateo 94401 $319,000 · 1 bd · 2 ba · 1,100 sqft
• 324 Catalpa Street Unit 120, San Mateo 94401 Pending $399,000 · 1 bd · 1 ba · 640 sqft
• 324 Catalpa Street #120, San Mateo 94401 Pending $399,000 · 1 bd · 1 ba · 640 sqft
• 324 Catalpa Street 120, San Mateo 94401 Pending $399,000 · 1 bd · 1 ba · 640 sqft
• 1 Baldwin Avenue 1008, San Mateo 94401 Off market since Oct 2026 $325,000 · 2 bd · 2 ba · 1,125 sqft