The central measured tension in 78717 is a declining asking-rent path alongside an appreciating resale median. Zillow’s ZIP asking-rent index stood at $1,660 in June 2026, while exact same-month history recorded a 1.2% one-year decline, a 4.1% annualized three-year decline, and a 0.7% annualized five-year decline. Recent direction therefore confirms rather than breaks from the longer weak rent path, with the three-year result showing the sharpest contraction. These are backward-looking rent measurements, not forecasts, investment recommendations, or evidence that every available listing is being repriced in the same way.
History coverage is strong but does not make a single current reading frictionless to interpret: 99.2% coverage produced 123 observations and 121 consecutive monthly returns. Annualized monthly-return variability was 3.1%, meaning the index has moved enough over time that a reader should place moderate, rather than absolute, confidence in one current rent snapshot. Separately, the maximum drawdown reached 16.2%, documenting the size of the largest historical retreat. Transparent national discovery ranks among history-eligible ZIPs were 2,760 for momentum, 1,804 for stability, and 2,703 for the balanced measure, where a lower rank is higher. Those ranks organize past-data discovery only; they do not predict rent performance.
The $1,660 figure is Zillow ZORI, a typical observed asking-rent index blended across rental types, rather than a survey median of occupied homes. The five-digit label 78717 is both Zillow’s ZIP market identifier and a Census ZCTA match; a ZCTA is a statistical area and is not identical to a USPS delivery ZIP. In the matched ACS 2024 five-year survey, median gross rent was $1,867 with a $69 margin of error. That occupied-renter-home measure includes selected utilities and sits 11.1% above ZORI, so the two values should not be treated as competing quotes for the same unit. ACS median household income was $145,325; annualizing current ZORI equals 13.7% of that figure. The $66,400 income associated with a 30% rent screen is arithmetic only, not advice or an applicant qualification rule.
Bedroom figures add useful structure without creating measured bedroom rents. Scaling ZIP ZORI by the local HUD ladder produces modelled monthly estimates of $1,321 for a studio, $1,400 for one bedroom, $1,660 for two bedrooms, $2,104 for three bedrooms, and $2,474 for four bedrooms. These are modelled estimates, not observed asking rents or transaction rents. HUD FMR/SAFMR is an administrative, bedroom-specific standard rather than asking rent; its local two-bedroom standard is $1,852. The ladder is useful for showing relative bedroom steps, but unit condition, lease terms, utilities, availability, and concessions can all make a specific listing differ from the modelled range.
The ACS ZCTA housing base contained 15,361 units, with a 2.7% overall vacancy rate and renters accounting for 48.7% of occupied homes. Of the vacant inventory, 322 units were classified as vacant for rent. The stock mix included 8,835 single-family units and 3,164 units in large multifamily structures, indicating that neither building form alone represents the full housing base. ACS also reports that 40.5% of renter households faced rent burden at or above the standard threshold. That burden result is a household-survey measure, not proof that a particular vacant unit is unaffordable, improperly priced, or likely to remain available.
Wider geography provides context, not substitutes for ZIP evidence: Austin city context rent was $1,614.53 with a 5.6% vacancy rate; Williamson County context rent was $1,685; and Austin-Round Rock-Georgetown metro context rent was $1,653 with a 9.5% apartment vacancy rate. ZIP ZORI is therefore near the metro context but below the county context, while the ZIP’s overall vacancy rate is below the city and metro vacancy measures. These comparisons require caution because their geographic scopes and, for the metro apartment vacancy figure, their housing-universe definition differ from the direct ZIP asking-rent index and the ACS ZCTA household survey.
Redfin’s direct rolling-three-month ZIP resale observation describes the for-sale market, not rental transactions. Its median sold price was $659,851, up 5.6% year over year; 87 homes sold and median marketing time was 41 days. Inventory was 143 homes, equal to 5.0 months of supply. Sale-to-list signals remained below a fully at-list outcome on average: the average sale-to-list ratio was 98.0%, and 13.0% of sales closed above list. This resale evidence challenges a simple reading of the rent history: sales pricing increased even as Zillow’s asking-rent index declined. Annualized ZIP ZORI divided by the median sold price equals a 3.0% cross-source screening ratio only, not a cap rate, net return, expected return, or property yield.
The data support comparison, not property-level conclusions. Check the current asking rent, bedroom count, lease length, included utilities, concessions, fees, availability date, and whether the listing’s property type matches the blended ZORI universe. For resale review, verify the actual sale date, physical condition, lot and building characteristics, financing or seller concessions, and the relevant list-price history rather than applying the ZIP median to an individual home. Reconcile any unit-level rent quote with the distinction between ZORI, ACS gross rent, HUD standards, and Redfin resale evidence before drawing a conclusion from the current snapshot.