Jefferson Parish presents a county-level underwriting tension: Zillow's supplied 2026-06 median home value was $275,580, up 7.62%, while measured median asking rent was $1,525, down 1.65%. The supplied gross yield is 6.64% before costs, making income underwriting more dependent on current rent than on a valuation narrative. Investors relying on appreciation should be cautious and investigate rent durability and closed-sale evidence. FHFA's separate 2025 annual repeat-transaction HPI rose 2.27%; it supports a positive direction, but is not a dollar home value or a same-period growth rate and should not be averaged with Zillow.
The gross yield must be stress-tested against carrying costs. Market rent is published and sits above HUD's $1,331 two-bedroom FMR; that standard is a payment standard, not an estimate of asking rent. Effective property-tax rate is 0.52%, with median annual tax of $1,312. The combination of a rising Zillow value, softer asking rent, and taxes makes gross yield a screening measure rather than a net return conclusion. Insurance, vacancy, repairs, management, utilities, and financing costs are not supplied.
Demand evidence is mixed. QCEW measures annual covered employment in the parish; its employment growth was 0.66%, and average covered-worker weekly wage was $1,274. Trade, transportation, and utilities was the largest disclosed private supersector, not the whole economy. Tax-return flows show more households moved out than in, while average income was $54,496 for movers in and $57,297 for movers out. Investor mortgages were 365 of 2,933 purchases, or 12.44%. Realtor.com adds MLS evidence of softer asking prices, more visible supply, longer marketing time, and price reductions; none is closed-sale proof or demand proof by itself.
Risk limits are material. The dominant hazard is hurricane, and the modeled annual climate-loss ratio is 0.50% of building value; that is modeled loss, not a property-specific insurance quote, deductible, or cash expense. Before underwriting, obtain wind and flood coverage terms, deductibles, claims history, condition details, lease-level rent comps, vacancy, and closed-sale comparables. The missing operating expenses and insurance prevent a net yield or DSCR conclusion; absent closed-sale evidence prevents deciding whether the Zillow value is realizable.