Martinez is Contra Costa County's county seat and a smaller, older community with a mix of historic single-family neighborhoods and newer planned developments on the city's edges. HOA density is lower here than in Walnut Creek or Concord, but the associations that do exist tend to manage properties with above-average deferred maintenance — older common areas, aging landscaping infrastructure, and reserve studies that were last updated when construction costs were 40% lower than today.
nexova ai is expanding to Martinez as part of our Contra Costa County launch in Q3 2026. Join the waitlist to get early access.

