Orange County starts at ~1.05% (the 1% Prop 13 base plus small voter-approved bonds). Because Santa Ana is an older, built-out city with little Mello-Roos, the effective all-in rate usually stays close to that base — well below the 1.4–1.8% you see in the newer CFD suburbs. Lower home values here also mean lower absolute tax dollars. Still budget for the one-time supplemental bill about a year after closing: it charges the gap between the seller’s old assessed value and your purchase price.

Santa Ana was largely developed before the Mello-Roos era (the CFD law dates to 1982), so most homes carry no special CFD tax at all — a real part of why it is more affordable than Irvine or Ladera Ranch. A handful of newer infill projects can carry an assessment, so it is still worth reading the parcel’s Orange County tax bill line by line, but for the typical Santa Ana home this line is zero.

Confirm at the OC Treasurer Mello-Roos database — most Santa Ana parcels show none.

Flat, dense and urban, Santa Ana sits outside CAL FIRE’s wildland hazard maps — wildfire is not the risk here. The risk-based cost is flood. Parts of the city near the Santa Ana River and its historic floodplain fall in FEMA Special Flood Hazard Areas, where a lender requires flood insurance (commonly ≈$600–$2,000/yr depending on the zone and elevation). Decades of channel work and the Prado Dam improvements have moved many areas out of the high-risk zone, so it varies block to block — pull the exact parcel on the FEMA flood map before you assume either way.

Santa Ana is Southern California Edison territory — about $259/mo at 750 kWh (~34.5¢/kWh, Jan 2026 advisory), among the pricier utilities in the state, with no municipal-utility break the way Anaheim or Roseville have. Natural gas is SoCalGas. On an older Santa Ana home, factor in that dated insulation, windows and HVAC can push usage — and the bill — higher than the average.