St. Clair County presents a yield-versus-liquidity and risk screen: the published 7.12% gross yield on a $277,589 Zillow county median home value warrants investigation by cash-flow buyers, while buyers dependent on rapid resale or untested flood costs should be cautious. Zillow’s observation is labeled 2026-06 and is a county home-value measure, not a sale-price comp. The thesis is conditional on rent durability, carrying costs, and flood exposure.
In that Zillow label, median asking market rent is $1,647 monthly, and the supplied yield is annual market rent before operating costs. HUD’s $1,266 two-bedroom FMR is a payment standard, not an asking-rent estimate; it cannot replace measured market rent or recast yield. The effective property-tax rate is 0.32%, a carrying-cost input alongside insurance, repairs, vacancy, financing, and flood mitigation, none published. Net yield and property-level debt coverage cannot be determined.
Price and demand evidence require restraint. Zillow’s county value increased 2.97%, while Realtor’s median MLS listing price fell 2.42% under that same source label. Active listings rose, and 18.96% carried a price reduction. These are asking-price, visible-supply, and seller-concession measures—not closed sales or stand-alone proof of buyer demand. Tax-return migration was net positive by 539 households, with inbound mover AGI $3,616 above outbound. Investor mortgages were 4.63% of 1,513 purchases, a countywide participation measure rather than evidence of bidding behavior. The QCEW annual record shows covered workplace employment increased 1.87%; Trade, transportation, and utilities is the largest disclosed private supersector, not the whole economy.
FHFA’s 2025 repeat-transaction HPI rose 0.64% annually. It shares Zillow’s positive direction but uses an earlier source period and a different method, so the rates should not be blended and the index is not a home value. Inland flood is the dominant hazard, alongside modeled expected climate loss of 0.17% of building value per year; this is not a property insurance quote or dollar loss. Flood-zone status, insurance and mitigation costs, unit-level rent comps, occupancy, condition, and sale comps are not published, preventing a net-cash-flow or resale-liquidity conclusion.