By Josh Lee | San Mateo Realtor | Real Estate Advisor Even in 2026, smart buyers in San Mateo County still fall into avoidable traps especially with prices high, inventory tight in some segments, and desirable homes moving quickly. Buying here requires more than browsing listings; it requires a clear plan, the right team, and discipline under pressure. Here are three big mistakes San Mateo County buyers still make and how to avoid them. Mistake #1: Shopping Before Getting Tru