Suffolk County’s decision tension is a $763,473 median home value against $3,423 monthly median asking rent and a supplied 5.38% gross yield before costs. Investors able to verify property-level expenses should investigate; buyers requiring a durable post-cost margin should be cautious. The question is whether carrying costs and listing conditions leave net income after a Zillow value series that was nearly flat.
Measured rent exceeds HUD’s two-bedroom Fair Market Rent, but FMR is a payment standard, not an asking-rent estimate; it cannot substitute for market rent or support a separate yield. Zillow’s county value rose 0.17% year over year, versus 2.84% for asking rent. FHFA’s repeat-transaction HPI rose 3.4% annually and 34.77% cumulatively over its five-year interval; it is an index, not a dollar value. Its method and vintage must not be blended with Zillow. The 0.66% effective property-tax rate and $4,649 median annual tax leave gross yield incomplete; insurance, maintenance and financing are not published.
Realtor.com’s MLS listing-market evidence has median listing price down 6.03% year over year, higher visible supply, unchanged marketing time, 16.86% of listings reduced, and a 54.8% pending-to-active ratio. These are asking-price, supply, marketing-time and concession measures, not closed-sale prices or proof of buyer demand. QCEW’s annual covered workplace employment slipped while its average weekly wage rose; Education and health services is the largest disclosed private supersector, not the whole economy. More tax-return households moved out than in, and leavers had higher average income. Investors made 15.87% of 5,161 purchases, signaling participation but not bid levels or investor cash flow.
With inland flood the dominant hazard, modeled expected annual climate loss is 0.08% of building value. That county-level model is not a parcel loss estimate. Flood zone, elevation, claims history, insurance quotes, operating expenses, lease terms, vacancy, assessed value and closed-sale comparables are not published. Those gaps prevent a net-yield conclusion, a target-asset tax estimate, and validation of valuation or achievable property-level rent.