Resale softness and a still-elevated asking index form the central tension in this ZIP. Zillow's June 2026 ZIP ZORI is $2,661 per month, a 1.04% year-over-year decline. ZORI is a typical observed asking-rent index blended across rental types, rather than a single-property quote. That level exceeded the Seattle city context of about $2,224, the King County context of $2,330, and the Seattle-Tacoma-Bellevue metro context of $2,269. These city, county, and metro figures are wider-geography context only; they are not ZIP rental comps. The reading therefore combines a local premium to broad contexts with a modest latest-period retreat.
History makes that retreat more consequential than its size alone. On exact same-month comparisons, the one-year change is the decline cited above, whereas three-year and five-year annualized changes are gains of 2.22% and 2.61%. Recent direction therefore breaks from, rather than confirms, the longer positive path. The available series has 100% coverage. Monthly rent changes had 3.69% annualized variability, which reduces the confidence a reader should place in one current ZORI snapshot; separately, the maximum peak-to-trough drawdown reached 17.58%, documenting a meaningful historical setback. Transparent national discovery ranks were 2,211 for momentum, 2,413 for stability, and 2,641 for the balanced measure, where a lower rank is higher. These are backward-looking measurements, not forecasts or investment recommendations.
The 98121 label is both a Zillow 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 ACS five-year survey, median gross rent was $2,337 for occupied renter homes and includes selected utilities, making the current ZORI level 13.9% higher. That gap reflects distinct source universes rather than a contradiction or a direct lease comparison. ACS also reports median household income of $152,019. Dividing annualized ZORI by that income produces a 21.0% asking-rent-to-income screen, while using the monthly ZORI in the stated 30% screen produces required annual income of $106,440. This required-income calculation is arithmetic only, neither affordability advice nor an applicant qualification rule.
Bedroom figures should be used only as a structured translation of the ZIP index. Scaling ZIP ZORI through the local HUD ladder yields modelled monthly estimates of $2,207 for a studio, $2,283 for one bedroom, $2,661 for two bedrooms, $3,481 for three bedrooms, and $4,093 for four bedrooms. These are modelled estimates, never measured bedroom rents, and cannot establish a candidate unit's asking price. The local HUD FMR/SAFMR ladder is an administrative, bedroom-specific standard rather than asking rent; its FY2026 two-bedroom standard is $2,501. Its role here is to set relative bedroom scaling, not to serve as an observed rental comparable or a landlord pricing measure.
Stock data add a marketwide availability lens without identifying any unit's condition or terms. The ACS ZCTA reports 16,684 housing units, with renters representing 77.4% of occupied homes and an overall vacancy rate of 14.4%. The structure mix is overwhelmingly large multifamily rather than single-family. Vacancy categories include homes classified as for rent, but this survey-based measure is not a live leasing inventory. Nor does vacancy prove that a particular apartment is available, comparable, affordable, or offered at the ZORI level. This renter-heavy, multifamily stock profile is useful context for interpreting an index blended across rental types, not evidence about a specific building.
Observed burden describes a different affordability reality from the mechanical income screen. In the ACS renter-home universe, 33.1% were in the high-burden group based on gross rent and the stated income-share threshold. That ZIP share is below the separately reported Seattle city context share and King County context share, each of which retains a wider geographic scope. The lower burden share does not demonstrate that a given listing is affordable to a given household, just as the ZORI calculation does not pair actual applicant income with a particular unit. Together, the measures show why historical household spending and a present asking-rent screen must remain separate.
The Redfin block is a direct rolling-three-month ZIP resale observation, not rental transaction evidence. At the stated endpoint, its median sold price was $579,869, down 9.4% year over year, with 52 homes sold, a median marketing time of 39 days, inventory of 158 homes, and 9.1 months of supply. The average sale-to-list result was 97.82%, while 9.81% of sales closed above list. These are for-sale liquidity and pricing signals only. The resale price decline agrees in direction with the current rental retreat, yet it creates a tension with the longer positive rent history and the current ZIP asking-rent premium to broader contexts. Annualized ZIP ZORI divided by median sold price is a 5.51% cross-source screening ratio only; it does not measure property economics.
Every source has a different unit, timing, and construction limit. For a candidate rental, verify the quoted asking rent date, rental type, bedroom configuration, utility responsibility, concessions, fees, lease terms, and actual availability before comparing it with ZORI, ACS, or HUD figures. For a resale comparison, verify address-level sale price, list price, marketing chronology, property type, and whether the sale belongs in the reported rolling observation. Neither a ZIP index, a ZCTA survey statistic, a HUD standard, nor a ZIP resale median can supply those property-specific facts. Does the specific property's documentation match the definition of the measure being used for comparison?
","findings":[{"body":"At $2,661, ZIP ZORI fell 1.04% from a year earlier, while exact same-month annualized changes over three and five years remained positive. The near-term result therefore breaks from the longer path. Complete historical coverage supports the record's completeness, but measured variability and drawdown keep the current index from functioning as a definitive stand-alone trend signal.","title":"Recent rent direction breaks from the longer record"},{"body":"ZORI and ACS rent provide divergent but valid reference points. The current ZIP ZORI exceeds ACS median gross rent, yet ACS covers occupied renter homes over five years and includes selected utilities. The required-income screen is a direct calculation from current ZORI, while burden reflects survey household outcomes. Neither measure certifies the affordability of an individual rental.","title":"Affordability screens answer different questions"},{"body":"The matched ZCTA has a renter-heavy occupied base, housing stock concentrated in large multifamily structures, and a material overall vacancy rate. These characteristics help describe the survey area's housing composition and vacant stock. They do not show that a particular rental is currently available, similarly configured, priced at the index level, or affordable to a specific household.","title":"Renter-heavy multifamily stock is context, not unit evidence"},{"body":"The direct ZIP resale observation shows a lower median sold price than a year earlier, substantial months of supply, and sale-to-list results below parity on average. That direction agrees with the latest asking-rent decline, creating a cross-market softness signal. It does not convert resale statistics into rental comps, and the ZORI-to-price figure remains only a cross-source screening ratio.","title":"Resale evidence confirms short-term softness but remains separate"}],"risks":["The current Zillow value is an index blended across rental types. It cannot verify a particular unit's rent, concessions, utilities, availability, bedroom classification, or lease terms.","ACS ZCTA figures are five-year survey estimates rather than a current feed of active listings. Sampling uncertainty, population scope, and selected-utility treatment limit direct comparison with current asking-rent observations.","The HUD ladder uses administrative bedroom standards. Scaling ZORI with it organizes bedroom estimates, but does not verify the actual size, configuration, condition, rent, or utility charges of a property.","Redfin evidence is limited to a rolling ZIP resale window. It may reflect a different timing and property mix from a specific listing and cannot become a rental transaction comparison."],"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 estimate for occupied renter homes and includes selected utilities. HUD FMR/SAFMR is a bedroom-specific administrative standard. Scope, timing, populations, and utility treatment differ, so the figures cannot be substituted for one another.","q":"What is the difference between Zillow ZORI, ACS rent, and HUD FMR/SAFMR?"},{"a":"The estimates begin with ZIP ZORI and apply the local HUD bedroom ladder as a scaling pattern. They are calculated estimates for studio through four-bedroom configurations, not observed rents for actual units. A property's rent can differ because the model does not identify its condition, lease terms, utility responsibility, concessions, or current availability.","q":"Why are the bedroom rent figures modelled rather than measured?"},{"a":"The history uses exact same-month annualized changes and complete observed coverage, documenting a past path rather than a projection. The latest annual decline breaks from positive longer-period changes. Variability and the maximum drawdown show that monthly index movements have not been uniform, so one current rent index reading deserves measured confidence.","q":"How should the historical rent record be interpreted?"},{"a":"Redfin provides a rolling-three-month direct ZIP resale observation, including sale price, transaction count, marketing time, inventory, supply, and sale-to-list measures. These are evidence about the for-sale market and liquidity, not rental transactions. Dividing annualized ZORI by median sold price is only a cross-source screen and does not calculate the economics of a property.","q":"What does the Redfin block say about the relationship between resale and rent?"}],"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 — ZIP rent fallback","release":"ZIP-CBSA 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