Essex County is an investigate-first market: a high-cost ownership basis meets published asking-rent evidence, but not yet a net-return case. That tension matters to yield-focused or leveraged buyers. New York, NY is context only; the record does not establish that Essex represents the metro. The county thesis merits property-level testing of costs, flood exposure, and tenant depth before relying on either income or appreciation.
Zillow's 2026-06 median home value is $675,065 and median asking rent is $2,274. Annual changes are 3.53% and 1.35%, respectively, producing the supplied 4.04% gross yield before costs. This is measured market rent, not HUD's payment standard. FHFA's repeat-transaction HPI rose 5.81% in annual 2025; it is neither a dollar home value nor the same vintage or method as Zillow, so the rates must not be averaged. Carrying costs matter: effective property tax is 1.91%. Market rent is 3.10% above the $2,205 two-bedroom FMR, but that does not validate asking rent or net yield.
Demand is mixed. Tax-return flows show net migration of -3,626, while the average AGI gap favors incoming movers by $4,207; this suggests fewer households but higher average income among arrivals, not proven tenant growth. Investor participation is measurable but not dominant: 859 of 5,393 purchase mortgages (15.93%) went to non-occupants. Realtor.com shows visible supply up 6.77%, with 899 active listings. Those are MLS conditions, not closed-sale prices or proof of demand. QCEW supplies workplace context, not resident or metro labor evidence. Test these signals against unit-level leasing, renewals, vacancy, and employer concentration.
Risk limits are concrete. Inland flood is the dominant hazard, and modeled annual building loss is 0.13%; that is not an insurance quote and does not reveal parcel flood depth, deductibles, exclusions, or claims. Missing operating expenses, vacancy, financing, insurance premiums, flood-zone/elevation detail, and closed-sale comparables prevent a net-yield, cap-rate, or debt-service conclusion. Next checks are parcel and lease review, insurance and tax documentation, comparable-unit rent verification, and financing under actual costs. A county median cannot establish achievable rent for the target unit.