In 94115, Zillow’s typical observed asking-rent index, which blends rental types, stood at $4,596 in June 2026 after a 23.4% same-month increase. The five-digit label is both a Zillow ZIP market identifier and a matched Census ZCTA identifier. A ZCTA is a Census statistical area, however, and is not identical to a USPS delivery ZIP. That distinction matters because the current Zillow reading represents observed asking-rent conditions in the ZIP market, while the Census measures describe surveyed households in the matched statistical area rather than a set of currently advertised units.
The matched ZCTA’s ACS 2024 five-year median gross rent was $2,476, and gross rent is a survey measure for occupied renter homes that includes selected utilities. The current asking-rent index is therefore 1.86 times that ACS median, a substantial source-universe gap rather than proof that any given occupied household or vacant listing is priced at either figure. For wider context, San Francisco city’s asking-rent context was $4,401, San Francisco County’s asking-rent context was $4,401, and the San Francisco-Oakland-Berkeley, CA metro asking-rent context was $3,301. Those city, county, and metro figures provide broader comparison scopes only; they are not ZIP-level substitutes.
A local HUD bedroom ladder scales the ZIP index into modelled monthly estimates of $3,169 for a studio, $3,796 for one bedroom, $4,596 for two bedrooms, $5,871 for three bedrooms, and $6,085 for four bedrooms. These are modelled estimates, not measured bedroom rents, and they preserve the relationship between the local HUD ladder and the ZIP-wide Zillow index. The corresponding HUD standards are $2,485, $2,977, $3,604, $4,604, and $4,772. HUD FMR/SAFMR is an administrative, bedroom-specific standard rather than an asking-rent observation, so neither the HUD figures nor the scaled estimates establish what a particular available apartment commands.
The affordability screen sharpens the difference between an index and household survey data. ACS reports median household income of $151,524, while annualizing the current asking-rent index and applying a 30% screen produces required income of $183,840; the resulting asking-rent-to-income screen is 36.4%. This is arithmetic, not advice and not an applicant qualification rule. Separately, 33.9% of surveyed renter households were rent burdened at 30% or more of income. The ZCTA housing evidence also shows an 11.9% vacancy rate, including 489 units vacant for rent, while 6,409 housing units were in large multifamily structures. Vacancy and burden describe aggregate conditions and cannot prove availability, affordability, or financial strain for a particular unit or household.
The historical record shows strong recent direction but a less even path underneath it. Exact same-month ZIP asking-rent changes annualized to 23.4% over one year, 10.9% over three years, and 8.7% over five years, so the latest movement accelerates beyond both longer lookbacks rather than breaking from their positive direction. When monthly changes are annualized, variability reaches 3.8%, meaning a single current reading should carry less confidence than a similarly rising but steadier series. The index also experienced an 18.2% maximum drawdown. Coverage was 98.4%; the transparent national discovery ranks were 8 for momentum and 2,483 for stability among history-eligible ZIPs. These are backward-looking measurements, not forecasts or investment recommendations.
The direct rolling-three-month ZIP resale observation presents a separate for-sale market picture. Median sold price was $2,029,041, up 27.2% year over year, with 88 homes sold and a median 20 days on market. There were 128 active listings, down 21.2%, while reported inventory was 25, down 59.5%, and months of supply stood at 0.8. Average sale-to-list reached 110.6%, with 65.2% of sales closing above list. Together, those resale signals describe transaction pace, available supply, and sale pricing in 94115’s for-sale market; they are not rental transactions, rental comparables, or evidence about lease economics.
The strongest tension is that resale and rent evidence both show sharp recent upward movement, yet the broader affordability and history evidence argues against treating that shared direction as a complete current-rent conclusion. Annualized ZIP ZORI divided by the ZIP median sold price equals a 2.7% cross-source screening ratio. It is only a comparison of an asking-rent index with a resale median and does not incorporate operating costs, financing, taxes, vacancy experience, or the terms of a specific lease. The large difference from ACS gross rent, the income screen, and the earlier drawdown each limit how much confidence belongs in one headline rent or resale snapshot.
Interpretation remains limited by differing geographies, timing, and measurement rules: Zillow tracks a blended asking-rent index, ACS is a five-year household survey with sampling uncertainty, HUD supplies administrative standards, and Redfin records recent resale activity. Property-level review should reconcile the advertised rent with bedroom count, lease length, concessions, included utilities, condition, and comparable active listings; a resale review should separately verify property type, list history, condition, and recently closed ZIP transactions. The evidence does not establish a unit’s actual rent, vacancy, buyer demand, or household affordability. Does the specific property evidence align with the index-based and resale-based signals without mixing their distinct source universes?