The San Diego Multifamily 2–4 Unit Trailing 12 Report provides investors and property owners with an in-depth look at San Diego County’s small multifamily real estate market. Covering October 2025 through September 2026, the report analyzes duplex, triplex, and fourplex sales, price per unit, cap rates, GRMs, and ZIP-code trends to help investors evaluate property values, identify investment opportunities, and make informed decisions about selling, buying, or completing a 1031 exchange.