Silver Spring's supplied Zillow snapshot puts the typical city home value at $556,503 and typical observed monthly market rent at $1,966. Those figures imply a 4.2% gross yield, before property tax, insurance, repairs, management, vacancy, utilities, financing and capital work. The Zillow value equals 5.6x ACS median household income, while annual Zillow rent equals 23.6% of that income. This is a screening frame, not a property return: achievable rent, acquisition price and costs can differ materially.
The city has 35,774 housing units; 5.0% are vacant, and renters occupy 61.7% of occupied units. The ACS median home value is $643,300, while ACS median gross rent is $1,913 and includes contract rent plus selected utilities. These surveyed occupied-housing measures must remain separate from Zillow's typical home-value and observed-market-rent series because definitions and periods differ. The ACS median year built is 1964, signaling a need to test building-specific condition rather than infer it from the citywide stock.
Citywide, 52.6% of renter households spend at least 30% of income on gross rent. Single-family homes make up 34.9% of units and large multifamily buildings 43.6%; neither share measures purchasable inventory. Among vacant units, 50.1% are classified for rent, but ACS vacancy reasons do not establish current availability or lease-up speed. Population declined 0.4% between overlapping ACS vintages, which should not be annualized and may reflect boundary changes. Median household income is $99,860, with poverty at 10.6% and unemployment at 5.4%; these are descriptive demand constraints, not proof of tenant performance.
Montgomery County context reports a median 37 days on market and price reductions on 18.3% of active listings; these may inform negotiation expectations but do not measure Silver Spring liquidity. Montgomery County's effective property-tax rate is 0.865%, a preliminary expense input that still requires parcel verification. The broader metro cannot be assessed because no metro record was supplied, and Montgomery County evidence should not be used as a metro substitute. Nationally, Freddie Mac's 30-year mortgage rate is 6.58%, a financing benchmark rather than a Silver Spring borrower quote.
Underwriting remains limited by aggregation: citywide values, rents, tenure, vacancy and burden cannot describe a specific asset, while county and national measures use different geographies and denominators. Reconcile the listing price with a unit-level rent survey and signed leases; verify parcel taxes, insurance, utilities, association fees and local rental requirements. Inspect structure, systems and deferred maintenance, then budget repairs, capital reserves, management, concessions and realistic vacancy. Finally, obtain property-specific financing terms and run downside cash-flow tests before deciding whether the spread compensates for asset-specific risk.