The immediate tension in 85255 is a high current asking-rent level alongside a recent retreat and a far more expensive resale market. Zillow’s ZIP-level ZORI, a typical observed asking-rent index blended across rental types, is $2,327 per month and has slipped from a year earlier. For wider context, Scottsdale city’s asking-rent index is $2,173, Maricopa County’s asking-rent index is $1,729, and the Phoenix-Mesa-Chandler, AZ metro asking-rent index is $1,733; these are broader-geography context measures, not ZIP rental comparables. The ZIP index therefore sits above each named context measure, but its blended design does not represent a specific available home, lease term, or rental configuration.
The backward-looking ZORI path does not show a simple continued acceleration. Exact same-month change was −1.0% over one year, +0.1% annualized over three years, and +2.9% annualized over five years. Recent direction therefore breaks from the positive five-year path and is weaker than the essentially flat three-year trend. History coverage is complete across 138 observations, which supports the measurement record but does not convert it into a forecast. At 3.7%, annualized monthly-return variability indicates that a single current rent reading warrants moderate caution rather than high precision. The largest peak-to-trough decline was 3.4%, showing that prior reversals were limited but meaningful. Transparent national discovery ranks of 2,566 for momentum and 2,777 for the balanced measure are descriptive ranks among history-eligible ZIPs, where lower ranks are higher; they are not investment signals or recommendations.
Source differences matter before comparing these rent figures. The 85255 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. In the ACS 2024 five-year survey, occupied renter homes had median gross rent of $2,483, with a margin of error of $123. That measure includes selected utilities and reflects survey responses from occupied renter homes, unlike Zillow’s asking-rent index; ZORI is 6.3% below that ACS median. HUD’s bedroom-specific administrative FMR or SAFMR standard is also not asking rent: its local two-bedroom standard is $2,760, placing the ZIP index 15.7% below that administrative benchmark.
The bedroom view is a modelled estimate, produced by scaling ZIP ZORI with the local HUD bedroom ladder rather than observing bedroom-specific asking rents. The resulting monthly estimates are $1,846 for a studio, $2,007 for one bedroom, $2,327 for two bedrooms, $3,103 for three bedrooms, and $3,440 for four bedrooms. These figures are useful for maintaining the ZIP’s current ZORI level while expressing the local HUD size relationship. They are not measured bedroom rents, HUD asking rents, or proof that listings at those amounts are available. A particular property can differ because bedroom count alone does not identify condition, included utilities, lease structure, furnishing, or concessions.
Income and renter-burden figures present a different affordability screen. The matched ZCTA’s median household income is $140,616, while the arithmetic income needed to keep the current ZORI at 30% of gross income is $93,080. The resulting asking-rent-to-median-income comparison is 19.9%, but it compares a ZIP asking-rent index with an area-wide household-income median and is not applicant qualification guidance. ACS estimates that 2,269 of 5,339 renter households, or 42.5%, paid at least the burden threshold; the renter-burden count has a margin of error of 376. This establishes an area-level survey condition, not the affordability or rent burden of any particular household or unit. The ZIP’s higher asking-rent index also needs to be read alongside the broader city, county, and metro context rather than treated as a stand-alone household budget.
Housing stock and vacancy complicate a simple tight-or-loose interpretation. The matched ZCTA contains 23,364 housing units, of which 3,535 are vacant, for a 15.1% vacancy rate. Seasonal vacancies account for 2,232 units, while 518 units are recorded as vacant for rent; these categories indicate differing uses and do not establish current rental availability at a particular building or price. The physical inventory is weighted toward 18,011 single-family units, compared with 2,637 units in large multifamily structures. This composition helps describe the survey-area stock but cannot identify which structures compete with the blended ZORI index. Nor does the reported vacancy rate prove future rent movement, landlord bargaining behavior, or conditions at an individual property.
The direct rolling-three-month ZIP resale observation points in a direction that is not fully confirmed by rent history. Median sold price was $1,549,650, up 5.1% from a year earlier, with 375 homes sold and median marketing time of 72 days. Inventory was 382 homes and months of supply stood at 3.1. Sale-to-list signals remained below full list pricing: the average sale-to-list ratio was 96.1%, 4.4% of sales closed above list, and 18.9% went off market within two weeks. These are ZIP for-sale and resale observations, not rental transactions or rental comparables. Annualized ZIP ZORI divided by median sold price is 1.8%, a cross-source screening ratio only, not a cap rate, net return, expected return, or property yield. Rising resale pricing alongside weak recent asking-rent history challenges a simple conclusion that the rental screen and resale evidence are moving together.
The evidence supports bounded comparisons rather than property-level conclusions. Zillow measures blended asking-rent conditions, ACS measures surveyed occupied renter homes and household characteristics, HUD supplies administrative size standards, and Redfin describes resale activity. None provides operating expenses, property taxes, insurance, financing terms, unit condition, actual lease concessions, or a verified rent roll. A property-level review would need to distinguish the actual bedroom count, included utilities, lease duration, furnishings, listing age, concessions, occupied status, and recent comparable asking rents from the area indexes. The central unresolved issue is whether a specific home’s lease terms and rental position align with the modelled ladder while the resale market remains much more valuable than the current rent snapshot suggests.
","findings":[{"body":"The ZIP asking-rent index exceeds the named Scottsdale city, Maricopa County, and Phoenix-Mesa-Chandler metro context indexes. Yet it falls below the ACS median gross-rent measure and the HUD two-bedroom administrative standard. Those comparisons are directionally useful only after preserving their separate universes: asking rents, occupied renter survey responses with selected utilities, and administrative bedroom standards are not interchangeable measures.","title":"Current rent is elevated versus wider context, but not versus every benchmark"},{"body":"The latest same-month annual change is negative, whereas the five-year annualized path remains positive and the three-year result is nearly flat. Complete historical coverage supports confidence that the measurements were observed consistently, but monthly variability and prior drawdown show that one current index reading should not be treated as a stable endpoint. The history is backward-looking, not a projection.","title":"Recent rent direction weakens the longer record"},{"body":"The mechanical income screen using current asking rent is below the matched ZCTA median household income, while a substantial share of surveyed renter households still meets the burden threshold. These measures address different populations and calculations. Median household income is not renter income, and burden estimates do not prove the payment position, lease terms, or utility costs for any specific renter or property.","title":"Area-level affordability is stronger than the renter-burden result alone suggests"},{"body":"The ZIP resale observation shows a high median sold price and positive annual price change, while recent asking-rent history is weaker. Marketing time, supply, sale-to-list performance, and quick off-market activity describe for-sale liquidity only. The annual-rent-to-sale-price calculation is a cross-source screening ratio, so it cannot substitute for property operating data or be treated as a return measure.","title":"Resale strength creates a cross-market tension"}],"risks":["The current asking-rent index is blended across rental types, so it may not match a specific home’s bedroom count, condition, included utilities, lease term, furnishing status, or concession package.","ACS ZCTA estimates are survey-based area measures with margins of error, and the statistical ZCTA boundary is not identical to a USPS delivery ZIP or a particular rental submarket.","Reported vacancy includes seasonal and other non-rental uses, so the vacancy figures cannot demonstrate immediately available inventory, landlord pricing power, or negotiating conditions for a specific property.","Redfin resale measures describe homes that sold or were listed in the for-sale market, not rental transactions, property expenses, financing costs, lease economics, or achievable rent for an individual home."],"qa":[{"a":"Zillow ZORI is a ZIP-level typical observed asking-rent index blended across rental types. ACS median gross rent is a five-year survey result for occupied renter homes and includes selected utilities. They differ in timing, sampled population, utility treatment, and methodology, so their difference is informative context rather than a contradiction or a direct valuation adjustment.","q":"Why does the current Zillow rent figure differ from ACS median gross rent?"},{"a":"No. The bedroom figures are modelled monthly ZIP estimates created by applying the local HUD bedroom ladder to the ZIP ZORI level. They preserve a size relationship rather than report observed asking rents for each bedroom count. A specific property can differ materially because the model does not capture condition, amenities, utilities, concessions, lease term, or furnishing.","q":"Are the bedroom figures observed rents for studio through four-bedroom homes?"},{"a":"The required-income figure is an arithmetic screen that divides annualized current asking rent by the stated gross-income share. It is not advice, a lending standard, or an applicant qualification rule. Comparing that result with area median household income provides broad context only, because household income is not necessarily renter income and individual housing costs vary.","q":"What does the required-income screen say about affordability?"},{"a":"The resale data should remain in the direct ZIP for-sale universe: sold prices, marketing time, inventory, supply, and sale-to-list outcomes describe resale conditions. Comparing annualized ZORI with median sold price can flag a cross-source tension, but it does not measure operating income, expenses, financing, vacancy losses, or a property-level investment outcome.","q":"How should the resale data be used alongside the rental data?"}],"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 crosswalk and 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