ZIP 85051 is both Zillow’s ZIP market identifier and a matched Census ZCTA. A ZCTA is a statistical area and is not identical to a USPS delivery ZIP. At the stated June 2026 Zillow endpoint, the ZIP’s ZORI was $1,275, up 0.9% from a year earlier. Zillow ZORI is a typical observed asking-rent index blended across rental types, rather than a lease-level rent quote or a bedroom-specific measure. The matched ACS 2024 five-year ZCTA survey reports a $1,322 median gross rent for occupied renter homes, a separate universe that includes selected utilities. The lower ZORI reading does not establish that current listings are cheaper than every occupied renter household’s housing cost; it principally reflects different concepts, populations, and timing.
The historical path is mixed rather than uniformly strong. Exact same-month ZORI growth was 0.9% over one year, 0.7% annualized over three years, and 3.9% annualized over five years. Thus, the recent positive direction confirms that asking rent is no longer declining over the latest year, but it breaks from the materially faster longer five-year rise. Coverage is complete across the available history. Monthly-return variability annualized to 3.0%, indicating that a single current index reading should be treated as a useful benchmark but not a highly precise representation of every available unit. Separately, the maximum drawdown was 4.2%, documenting a past decline within the series. Transparent national discovery ranks among history-eligible ZIPs were 2,075 for momentum, 1,678 for stability, and 2,223 for the balanced measure; lower ranks are higher and these are backward-looking discovery measures, not forecasts or investment recommendations.
Bedroom figures should be read as modelled estimates, not measured bedroom rents. Scaling ZIP ZORI by the supplied local HUD ladder produces monthly modelled estimates of $992 for a studio, $1,083 for one bedroom, $1,275 for two bedrooms, $1,725 for three bedrooms, and $1,958 for four bedrooms. The FY2026 HUD two-bedroom standard is $1,530. HUD FMR/SAFMR is an administrative, bedroom-specific standard and not asking rent, so its ladder is being used here only to allocate the ZIP-wide ZORI across bedroom counts. It cannot verify an advertised unit’s bedroom rent, utilities, condition, availability, concessions, or lease terms.
A 30% required-income screen turns the $1,275 ZIP asking-rent index into $51,000 of annual income by arithmetic. That screen is not advice and is not an applicant qualification rule. The ZCTA’s ACS median household income is $69,189, making the simple annualized asking-rent-to-median-income comparison 22.1%; it is not a distribution of renter incomes or an affordability finding for an individual household. The ACS burden data provide a different and more direct household-cost lens: 3,540 of 7,140 renter households, or 49.6%, reported gross rent at or above 30% of income. The gross-rent median’s $71 margin of error also warrants restraint when comparing close survey values. Aggregate burden does not prove that a particular available unit is affordable or unaffordable.
The ACS ZCTA housing inventory totals 16,992 units, with 1,070 vacant units, for a 6.3% vacancy rate. Its 7,140 renter-occupied homes represent a 44.8% renter share of occupied homes. The structure mix is led by single-family homes, while large multifamily structures are also present, so the ZIP-wide rental index can blend different property forms. Some vacant homes are categorized as for rent, but vacancy is an aggregate Census estimate, not evidence that a specific unit is vacant, lease-ready, competitively priced, or suitable for a particular household. Likewise, the renter share describes occupied housing in the survey, not a current listing mix.
Broader figures place the ZIP’s rent level below its surrounding contexts, but they remain context rather than substitutes for ZIP evidence: the Phoenix citywide rent context is $1,569, the Maricopa County-wide rent context is $1,729, and the Phoenix-Mesa-Chandler, AZ metro-wide rent context is $1,733. Those city, county, and metro values cover wider geographies and should not be treated as local rent comparables for 85051. Their main descriptive use is to show that the ZIP’s current Zillow asking-rent index sits at a lower level than each named broader-area benchmark, while the ACS, HUD, and resale datasets still answer different questions.
The direct rolling-three-month Redfin ZIP resale observation adds a meaningful tension. Median sold price was $334,924, down 9.1% year over year, while 97 homes sold and median marketing time was 42 days. Inventory was 91 homes and months of supply stood at 2.9. Sale-to-list evidence was also below full list realization on average, at 98.1%, with 25.6% of sales above list. This is for-sale market evidence, not rental transactions or rental comps. The resale price decline challenges any simplistic reading of the modestly positive current rent change as uniformly strengthening housing-market conditions, while the completed sales and limited supply describe ongoing resale activity. Annualized ZIP ZORI divided by median sold price equals a 4.6% cross-source screening ratio only; it is not a cap rate, net return, expected return, property yield, or property-level economics.
The evidence is strongest as a ZIP-level screen with clear boundaries. ZORI does not disclose unit-specific asking terms, ACS is a five-year survey rather than a current listing census, HUD is an administrative standard, and Redfin’s rolling resale metrics do not establish rental transaction values. Concrete property-level checks should therefore distinguish advertised base rent from utilities, deposits, fees, concessions, parking, lease length, bedroom count, square footage, condition, availability date, and comparable nearby listings. For a resale-linked review, the relevant checks also include recent property-specific sales, list history, actual days marketed, and any differences between the subject home and ZIP medians. The central unresolved question is whether a specific available unit resembles the broad ZORI benchmark after those terms are known.
","findings":[{"body":"Zillow’s June 2026 ZIP asking-rent index was modestly higher than a year earlier, yet the one- and three-year annualized gains were far below the five-year pace. That pattern supports a mixed reading: the series has recently moved upward, but current momentum does not match the longer historical appreciation rate. Historical measures are descriptive, not predictive.","title":"Recent rent growth is positive but subdued"},{"body":"The simple ZORI-to-income screen is below the 30% threshold when ZIP asking rent is annualized against ZCTA median household income. In contrast, nearly half of surveyed renter households reported gross-rent burdens of at least 30% of income. This difference is expected because the first is arithmetic using medians, while ACS burden measures actual surveyed household relationships.","title":"Affordability indicators differ by population and method"},{"body":"The ZCTA has a substantial renter-occupied segment and a housing base led by single-family units, with large multifamily buildings also represented. Its reported vacancy rate is an aggregate ACS estimate. It can frame broad availability conditions, but it cannot confirm whether a particular rental is vacant, ready to lease, priced near the index, or comparable to another unit.","title":"Housing composition and vacancy are aggregate signals"},{"body":"Redfin’s direct ZIP resale data show a lower median sold price than a year earlier alongside completed sales, limited months of supply, and average sales below list price. Those for-sale signals neither measure rents nor establish property economics. They do challenge a simplistic interpretation that modest asking-rent growth alone describes all local housing-market conditions.","title":"Resale conditions complicate the rent-only picture"}],"risks":["Zillow ZORI, ACS median gross rent, and HUD FMR/SAFMR use different populations, timing, and definitions. Treating any one of them as interchangeable with a current unit’s advertised rent can create false precision.","The ACS burden, vacancy, renter-share, income, and housing-stock figures are ZCTA five-year survey estimates with margins of error where supplied. They describe aggregates and cannot establish conditions for a particular household or property.","The bedroom ladder is modelled by scaling ZIP ZORI with the local HUD standard. It is not observed bedroom-rent data and may differ from current listings because of unit quality, utilities, incentives, and lease terms.","Redfin’s rolling ZIP resale observation concerns home sales rather than rental transactions. The rent-price screening ratio omits financing, taxes, insurance, maintenance, vacancy, fees, and property-specific differences, so it cannot represent investment performance."],"qa":[{"a":"Zillow ZORI is a ZIP-level typical observed asking-rent index blended across rental types at its stated endpoint. ACS median gross rent is a matched ZCTA five-year survey measure for occupied renter homes and includes selected utilities. Different timing, covered homes, and rent concepts mean the two values should be compared for context, not treated as interchangeable.","q":"Why is the Zillow rent index different from ACS median gross rent?"},{"a":"No. The studio through four-bedroom figures are modelled monthly estimates created by scaling the ZIP-wide Zillow ZORI using the supplied local HUD bedroom ladder. HUD FMR/SAFMR is an administrative standard rather than asking rent. The estimates do not measure current listings or account for unit condition, utilities, concessions, or lease structure.","q":"Are the bedroom rent figures actual observed rents for 85051 listings?"},{"a":"It only converts the ZIP asking-rent index into an annual income amount using a 30% arithmetic threshold. It is not financial advice, an applicant qualification requirement, or proof of affordability for any household. The ACS rent-burden statistic is a separate survey-based measure showing how surveyed renter households’ gross rent related to their reported incomes.","q":"What does the 30% affordability screen establish?"},{"a":"Use them as a separate direct ZIP for-sale observation. Sold price, sale volume, marketing time, inventory, supply, and sale-to-list measures describe resale conditions, not rental transactions. Dividing annualized ZORI by median sold price produces only a cross-source screening ratio; it does not measure cap rate, net income, future return, or property-specific economics.","q":"How should the Redfin resale figures be used with 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 Small Area FMRs — 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