Boston’s Zillow measures put typical city home value at $788,881 and typical observed market rent at $3,469 monthly. That produces a 5.3% gross yield before operating costs, financing and vacancy. The value is 8.1x ACS median household income, while annualized Zillow rent equals 42.8% of that benchmark; both indicate demanding affordability, not household qualification. Zillow home value fell 1.3% year over year as rent rose 2.9%, a mixed setup rather than evidence of future direction.
Citywide, renters occupy 64.3% of occupied homes, and housing-stock vacancy is 8.8%. ACS median owner-reported home value is $731,700, while ACS median gross rent is $2,147 monthly, including contract rent plus selected utilities. These survey measures describe occupied housing; Zillow’s typical value and observed market rent use different constructs and periods. Do not average them or treat their gap as a property discount, achievable rent or return.
Direct city depth shows an ACS rent-burden rate of 51.2%. Single-family homes comprise 18.3% of units and large multifamily buildings 27.8%. Of vacant units, 32.6% are recorded as for rent; other reasons include for-sale and seasonal use. Population was 2.6% lower between overlapping ACS vintages; this is not annualized and may reflect boundary changes. Median household income is $97,344; poverty is 16.6% and unemployment 6.1%, descriptive demand constraints, not causes. These citywide facts neither identify available investment inventory nor prove lease-up speed.
In Suffolk County, Realtor context shows a median 45 days on market and price reductions on 16.9% of active listings, useful for negotiation context but not city transaction performance. Suffolk County’s reported property-tax rate is 0.66%, which does not determine a parcel’s bill. In the broader Boston, MA metro, employment declined 0.8% year over year and building permits totaled 12,696, separate indicators with different denominators. The national Freddie Mac 30-year mortgage rate is 6.58%, a financing benchmark rather than a Boston borrowing quote.
The principal underwriting gap is property-level economics: headline gross yield omits taxes, insurance, maintenance, management, utilities, capital work, financing and downtime. Before acting, verify asking price, achievable lease rent and included utilities; inspect condition and deferred maintenance; review leases, collections and turnover; confirm parcel taxes, insurance terms, flood or climate exposure, zoning, permits and legal use; and model debt service and reserves under conservative vacancy and repair assumptions. Let building type and tenancy, rather than citywide averages, drive those checks.