The strongest cross-market tension is that the direct rolling-three-month Redfin ZIP resale observation is softer than the rent index. In 78702, the median sold price was $635,856, down 6.83% year over year, while 109 homes sold and inventory stood at 260 homes. Supply measured 7.2 months and the median marketing time was 68 days. Sellers received 96.41% of list price on average, and 12.28% of sales closed above list. Those are for-sale liquidity and pricing signals, not rental transactions; they challenge any attempt to treat the current rent reading as a complete statement about local housing-market conditions.
The five-digit 78702 label is both a Zillow ZIP market identifier and a matched Census ZCTA. A ZCTA is a statistical area and is not identical to a USPS delivery ZIP. Zillow ZORI was $2,051, representing a typical observed asking-rent index blended across rental types rather than a lease-level comparable. The ACS five-year median gross rent was $2,041, a survey measure for occupied renter homes that includes selected utilities. The two measures were therefore only about 0.5% apart, but they remain distinct evidence universes. HUD's two-bedroom $1,852 standard is administrative and bedroom-specific, not an asking-rent measure; ZORI was 10.7% above that HUD benchmark.
The bedroom view is a modelled estimate, not measured bedroom rent. It scales the ZIP-wide ZORI using the local HUD bedroom ladder, preserving the ladder's relative spacing while retaining the ZIP index as the overall anchor. The resulting monthly estimates are $1,632 for a studio, $1,730 for one bedroom, $2,051 for two bedrooms, $2,599 for three bedrooms, and $3,057 for four bedrooms. This is useful for sizing a broad rent screen, but it cannot establish the asking rent, condition, utility treatment, or availability of a particular unit. HUD standards themselves should likewise not be read as observed listings.
The backward-looking rent path supports the packet's cooling classification, although the timeframe matters. Exact same-month Zillow ZORI change was negative over one year at 0.82% and over three years at 1.65%, so the recent direction confirms the medium-term cooling path. The five-year change remained positive at 0.86% annually, meaning the latest decline does not erase the longer net increase. History has complete coverage: 126 observations and 125 consecutive monthly returns. Annualized monthly-return variability of 3.28% argues against overconfidence in one current index snapshot, while the maximum drawdown of 8.25% shows that a meaningful pullback occurred within the observed record. Transparent national discovery ranks were 2,670 for momentum, 2,016 for stability, and 2,724 for the balanced measure, where lower ranks are higher; these are descriptive discovery tools, not forecasts.
The income and burden screen is less uniformly relaxed than the household-income comparison alone. ACS reports median household income of $102,171, while paying the current $2,051 monthly ZORI at 30% of income requires $82,040 annually. That arithmetic puts the ZIP-wide asking-rent-to-income screen at 24.1% of median household income. Separately, 48.6% of surveyed renter households paid at least 30% of income toward rent in the ACS burden measure. The required-income calculation is arithmetic, not advice or an applicant qualification rule, and the burden statistic cannot show that any particular household or available unit is affordable or unaffordable.
Housing stock and vacancy add another layer of uncertainty to the rent snapshot. The matched ZCTA contained 14,986 housing units, of which 1,227 were vacant, producing an 8.2% vacancy rate. Renters occupied 59.1% of occupied homes, and 493 vacant units were classified as for rent. The stock includes both single-family and large multifamily structures, so it is not a single building type. These ACS five-year counts describe a survey-based area-wide inventory rather than live vacancies; in particular, vacant-for-rent units do not prove that a specific property has availability, concessions, or a comparable lease offering.
Wider places provide context but should not replace ZIP evidence: Austin city context rent was $1,615, Travis County context rent was $1,649, and the Austin-Round Rock-Georgetown, TX metro context rent was $1,653. Each is below the ZIP's current $2,051 ZORI, while city and county survey gross-rent context also sits below the ZIP's ACS gross-rent result. The ZIP's renter share and vacancy rate are both above the corresponding city and county context measures, but those comparisons do not identify the mix, timing, or availability of housing within an individual property. City, county, and metro figures remain wider-scope reference points rather than ZIP rental comps.
Annualized ZIP ZORI divided by the Redfin median sold price produces a 3.87% cross-source screening ratio. It is not a cap rate, net return, expected return, property yield, or measure of operating economics. The resale decline, lengthy marketing time, months of supply, and below-list sale-to-list result form a tension with the still-high ZIP rent level and the prior five-year rent increase. A property-level review would need to verify the actual asking rent, bedroom count, included utilities, listing status, occupancy, condition, and sale/list details before connecting these area measures to a specific home. The available evidence supports comparison, not a conclusion about any individual lease or transaction.
","findings":[{"body":"The direct ZIP resale record shows a 6.83% year-over-year decline in median sold price, 7.2 months of supply, 68 median days on market, and an average sale-to-list result below 100%. That for-sale evidence is materially softer than the one-year ZORI decline of 0.82%. It is a market tension, not evidence that rental transactions followed the same path.","title":"Resale softness is more pronounced than rent cooling"},{"body":"Zillow's $2,051 ZORI and the ACS $2,041 median gross rent are close numerically, yet they describe different universes. ZORI is a blended asking-rent index across rental types. ACS is a five-year survey of occupied renter homes and includes selected utilities. Their similarity should not be converted into a unit-level rent comparable or a claim of identical market timing.","title":"Current asking and survey rent measures are closely aligned but not interchangeable"},{"body":"The 30% arithmetic screen requires $82,040 of annual income to support the current ZORI, below the matched ZCTA's reported median household income. At the same time, 48.6% of surveyed renter households were rent burdened at 30% or more. The contrast shows why median-income arithmetic cannot determine affordability for a particular renter, lease, or building.","title":"Area-wide income screen contrasts with widespread reported burden"},{"body":"One- and three-year same-month ZORI changes were negative, while the five-year annualized change remained positive. Full historical coverage makes those backward-looking measures complete within the observed series, but 3.28% annualized monthly-return variability and an 8.25% maximum drawdown show that the index has moved enough to limit confidence in a single current snapshot.","title":"History warrants caution around a single current reading"}],"risks":["Zillow asking-rent index, ACS gross rent, HUD bedroom standards, and Redfin resale observations use different populations, timing, and concepts. Numerical proximity between them does not make them interchangeable property-level evidence.","The bedroom figures are modelled from ZIP ZORI and the HUD ladder. They may not reflect actual listings, unit condition, concessions, utility inclusion, lease terms, or available inventory for any bedroom size.","Historical rent changes, variability, drawdown, scores, and discovery ranks are backward-looking measurements. They do not forecast future rents, resale prices, tenant demand, property performance, or investment outcomes.","Area vacancy, rent burden, household income, and renter-share statistics describe a surveyed ZCTA population. They cannot establish vacancy, affordability, household qualification, or operating conditions at a particular address."],"qa":[{"a":"Zillow ZORI is a ZIP-level typical observed asking-rent index blended across rental types, whereas ACS median gross rent is a five-year survey result for occupied renter homes and includes selected utilities. Similar dollar values can be informative as a broad consistency check, but different timing, respondent populations, and rent definitions prevent direct substitution.","q":"Why are Zillow ZORI and ACS median gross rent nearly the same here but still different measures?"},{"a":"No. The studio through four-bedroom figures are modelled monthly ZIP estimates created by scaling the overall ZORI with the local HUD bedroom ladder. They are not measured listing rents and cannot establish a unit's actual asking price, amenities, utility treatment, availability, condition, or lease structure.","q":"Are the bedroom estimates observed rents for available apartments or houses?"},{"a":"The observed history indicates recent cooling because the one-year and three-year same-month changes were negative. However, the five-year annualized change remained positive. Complete series coverage strengthens the record's descriptive value, while monthly variability and the maximum drawdown mean a single current reading should be interpreted as an index snapshot rather than a precise local rent quote.","q":"What does the history say about the current rent level?"},{"a":"A property-specific review should verify the actual advertised rent, bedroom count, included utilities, current listing status, occupancy, condition, and relevant sale or list details. Those checks are necessary because the packet combines area-level asking-rent, survey, administrative-standard, and resale evidence rather than a direct appraisal or lease record for one address.","q":"What should be checked before applying these ZIP figures to a particular property?"}],"sources":[{"key":"apartment_list_time_on_market","name":"Apartment List Time on Market — listing liquidity","release":"Apartment List 2026-07","pulledAt":"2026-08-08","url":"https://www.apartmentlist.com/research/category/data-rent-estimates"},{"key":"apartment_list_vacancy","name":"Apartment List Vacancy Index — rental vacancy","release":"Apartment List 2026-07","pulledAt":"2026-08-08","url":"https://www.apartmentlist.com/research/apartment-list-vacancy-index-methodology"},{"key":"census_zcta_facts","name":"Census ACS five-year — ZCTA housing and income","release":"ACS 2024 5-year ZCTA","pulledAt":"2026-08-08","url":"https://api.census.gov/data/2024/acs/acs5.html"},{"key":"hud_zip","name":"HUD USPS 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