Will County, IL

Will County presents a carry-cost-versus-income screen: the 2026-06 Zillow county median home value of $379,266 pairs with measured median asking rent of $2,347 per month and a published 7.43% gross yield. That is a pre-expense screen, not cash flow; the 2.24% effective property-tax rate and $7,173 median annual tax warrant property-level review. Income-oriented buyers should investigate rent durability and tax bills; buyers relying on resale momentum should be cautious.

FHFA's 2025 repeat-transaction HPI increased 4.6% annually and 52.55% over its supplied multiyear measure; it is an appreciation index, not a dollar value, and cannot be averaged with the later, differently constructed Zillow measure. Realtor.com's 2026-06 MLS listing market had asking prices up 5.47%, 1,092 active listings, median marketing time of 31 days, and 13.86% of listings reduced. These are visible supply and seller-concession signals, not closed prices or standalone proof of buyer demand.

Market rent is measured asking rent, while HUD Fair Market Rent is a payment standard rather than an asking-rent estimate; the stated yield uses market rent, not FMR. Tax-return migration was negative because departures exceeded arrivals, although inbound movers reported higher average AGI than outbound movers. Investor mortgages were a minority of total purchases, indicating nonowner buyer presence but not conditions in any neighborhood. QCEW's 2025 increases in covered workplace jobs and average weekly wage add operating context, but they are neither resident employment nor a forecast; Trade, transportation, and utilities is only the largest disclosed private supersector, not the whole economy.

Modeled annual building-value loss is consistent with inland flood as the dominant hazard, requiring parcel flood exposure, insurance availability, and deductible review rather than a countywide loss assumption. Missing evidence includes unit-level achieved rents and vacancy, operating expenses, financing, flood-zone and claims history, and closed-sale comps. Without them, an underwriter cannot test net yield, replacement demand, property-specific flood cost, or whether MLS asking conditions translate into executable acquisition prices.