Knox County presents a price-momentum-versus-carrying-cost verification case: investors who can source property-level rents, taxes, and flood insurance should investigate, while buyers relying on appreciation alone should be cautious. The Zillow county median home value was $123,085 in 2026-06, up 16.56% year over year. That direction is supported, but not matched into a single rate, by FHFA’s repeat-transaction HPI: its 2025 annual change was 5.51%. FHFA is an index rather than a dollar valuation, and its annual observation is neither the same vintage nor method as Zillow’s value measure.
No market asking rent is published, so gross yield cannot be computed. HUD’s two-bedroom FMR of $916 per month is a payment standard, not evidence of market rent and must not fill that gap. Carrying costs warrant direct review: effective property tax is 1.96%, and median annual property tax is $2,190. These county-level tax measures do not identify the bill for a particular parcel; obtain assessment, exemptions, and actual insurance before testing cash flow.
MLS listing-market evidence points to negotiating friction rather than confirmed sales demand: Realtor.com reports 47 median days on market and 14.52% of active listings price-reduced in 2026-06. Those are marketing-time and seller-concession measures, not closed prices or buyer-demand proof. Investor participation was 32 non-occupant purchase mortgages against 506 total purchases, a limited but visible competing-buyer channel. Migration adds a counterweight: net migration was -97 tax-return households, although inbound movers’ average income exceeded outbound movers’ by $2,283. The income gap does not offset the loss of moving households.
Risk remains chiefly property-specific. Inland flood is the dominant hazard, and modeled climate loss equals 0.16% of building value expected per year; it is modeled exposure, not a quoted insurance cost. Missing market rent prevents a yield conclusion, and missing property-level flood zone, claims, elevation, deductible, and premium information prevents a carrying-cost conclusion. Next checks are lease comps and concessions, parcel tax and assessment records, insurance quotes, and transaction-level sales and financing evidence; county aggregates cannot establish a building’s rent, condition, or flood exposure.