A cooling rent signal conflicts with firmer resale signals in ZIP 22311. Zillow’s typical observed asking-rent index, ZORI, was $1,806 in the stated June period, down 3.9% from the same month a year earlier, while the direct ZIP for-sale record points to materially stronger pricing. That split is the central decision tension: a current asking-rent snapshot has softened, but the available sale-market evidence does not mirror it. Neither reading converts into a forecast, a property valuation, or a transaction recommendation. The useful interpretation is narrower: leasing conditions summarized by ZORI should be evaluated separately from resale conditions summarized by Redfin.
The backward-looking ZORI path makes the recent decline more notable. The exact same-month one-year rent-history measure is -3.9%, whereas the three-year measure is +1.6% annualized and the five-year measure is +3.3% annualized. Thus, recent direction breaks from, rather than confirms, the longer positive path. History coverage is complete across 64 observations and 63 consecutive monthly returns. Annualized monthly-return variability is 2.6%, quantifying movement around the path and limiting the precision warranted for one current rent snapshot. Separately, maximum drawdown reached 4.5%, showing the largest cumulative retreat in the observed series. Transparent national discovery ranks among history-eligible ZIPs are 2,540 for momentum, 881 for stability, and 2,141 for the balanced measure; lower ranks are higher. These are retrospective sorting tools, not forecasts or investment recommendations.
The evidence sources answer different questions. Zillow ZORI is a ZIP-level, typical observed asking-rent index blended across rental types. By contrast, the matched Census ZCTA five-year survey reports median gross rent of $1,963, with a $71 margin of error, for occupied renter homes and includes selected utilities. That ACS figure is 8.0% above ZORI, a difference that should not be treated as a direct rent-comp gap. The five-digit 22311 label is both a Zillow ZIP market identifier and a Census ZCTA match; a ZCTA is a statistical area, not the same thing as a USPS delivery ZIP. HUD’s two-bedroom standard is $2,160, placing ZORI 16.4% below it, but HUD FMR/SAFMR is an administrative bedroom-specific standard rather than asking rent.
The bedroom ladder is useful only as a modelled translation of the ZIP-wide index. Scaling ZORI with the local HUD ladder produces modelled monthly ZIP estimates of $1,580 for a studio, $1,605 for one bedroom, $1,806 for two bedrooms, $2,258 for three bedrooms, and $2,667 for four bedrooms. These are modelled estimates, never measured bedroom rents, and they do not establish what any particular available unit should command. Their value is internal consistency across bedroom sizes, while their limitation is that they inherit the ZIP index and HUD ladder rather than observed unit-level listings, lease terms, concessions, or utility treatment.
The affordability screen is comparatively tight even though the ZIP-wide asking index is below ACS gross rent. At a 30% required-income screen, $1,806 monthly asking rent implies $72,240 in annual income; this is arithmetic, not advice and not an applicant qualification rule. The matched ZCTA median household income is $87,626, making the ZIP asking-rent-to-income measure 24.7%. ACS also counts 6,868 renter-occupied homes, or 81.5% of occupied housing, and 3,454 renter households reporting rent burdens at or above 30%, equal to 50.3% of renters. The 8.6% vacancy rate, along with 4,092 large-multifamily units versus 1,730 single-family units, describes aggregate stock rather than availability or affordability at a particular unit. Neither burden nor vacancy proves conditions for an individual property.
Wider comparisons reinforce that this ZIP is a lower-rent pocket within the supplied contextual series, but those geographies are not substitutes for ZIP evidence: the Alexandria city context Zillow rent is $2,318, the Alexandria City county context Zillow rent is $2,284, and the Washington-Arlington-Alexandria, DC-VA-MD-WV metro context Zillow rent is $2,448. The city-context ACS median gross rent is $2,089, while metro-context apartment vacancy is 6.8%. These city, county, and metro values provide scale only; they cover broader populations and, in the ACS and apartment-vacancy cases, different measurement universes. They should not overwrite the ZIP’s cooling ZORI history, renter concentration, or local housing-stock composition.
Redfin supplies direct rolling-three-month ZIP resale evidence, not rental transactions. Its median sold price was $714,838, up 9.6% year over year, with 30 homes sold and median marketing time of 20 days. Active listings numbered 47, inventory was 18 homes and stood 52.3% higher than a year earlier, and months of supply were 1.9. Sale-to-list signals were also firm: the average sale-to-list ratio was 100.7%, 48.3% of sales closed above list, and 69.1% went off market within two weeks. This liquidity and price evidence challenges any simplistic reading that a falling asking-rent index alone means a uniformly weaker housing market. Annualized ZIP ZORI divided by median sold price is a 3.03% cross-source screening ratio only; it is not property-specific economics.
Several limits remain material. ZORI is an index rather than a quote for a specific home, ACS is a survey with sampling uncertainty and a different utility treatment, HUD is an administrative standard, and Redfin measures resale outcomes rather than rental performance. The periods also differ across the sources, so alignment should not be assumed. Before applying this report to a property, verify the actual asking rent, bedroom count, lease length, included utilities, concessions, availability date, and property condition; separately match resale observations to property type, sale timing, list history, and relevant transaction records. Those checks can test whether the ZIP-level tension is actually present in the property under review. Which documented lease terms and sale comparables truly match the specific home?
","findings":[{"body":"The one-year ZORI change is negative, while the three-year and five-year same-month annualized measures remain positive. That divergence identifies recent cooling rather than a uniformly declining history. Complete coverage supports use of the historical series, but measured variability and drawdown still mean a single current index reading should be treated as a bounded snapshot rather than a durable trajectory.","title":"Cooling rent history breaks from the longer path"},{"body":"Zillow ZORI measures blended observed asking rents, ACS median gross rent describes occupied renter homes and selected utilities, and HUD standards serve administrative bedroom-specific purposes. The matched ZCTA is statistical geography rather than a USPS delivery ZIP. Differences among these figures are informative about scope and method, but they cannot establish an observed rent for a particular bedroom count or property.","title":"Source differences are decision-critical"},{"body":"The ZCTA has a renter-heavy occupied stock and roughly half of renter households report spending at least 30% of income on rent. The income screen is arithmetic rather than a qualification decision. Vacancy and the large-multifamily count describe aggregate supply conditions, but they do not prove availability, pricing power, or affordability for any specific vacant apartment.","title":"Aggregate renter pressure coexists with meaningful vacancy"},{"body":"Redfin’s direct ZIP resale data show a higher median sold price, short marketing time, limited months of supply, and sale-to-list measures above parity. Those for-sale observations do not represent rental transactions, yet they complicate a conclusion based solely on the falling ZORI reading. The rent-to-price figure remains only a cross-source screening ratio and does not measure property-level economics.","title":"Resale liquidity runs against the cooling-rent simplification"}],"risks":["The current ZORI, ACS gross-rent survey, HUD administrative standard, and Redfin resale series cover different populations, timing, and purposes, so direct comparisons can create false precision about a single available home.","The renter-burden and vacancy statistics are area-level measures with survey uncertainty and cannot demonstrate whether a particular unit is affordable, vacant, competitively priced, or likely to lease.","Bedroom figures are modelled from the ZIP-wide index and HUD ladder rather than measured unit rents, leaving lease length, concessions, included utilities, condition, and unit type unobserved.","The resale series shows direct ZIP transaction liquidity but not rental performance, expenses, financing, property condition, or future price behavior, so its apparent strength should not be generalized beyond its for-sale universe."],"qa":[{"a":"It represents Zillow’s typical observed asking-rent index for the ZIP, blended across rental types. It is useful for a broad current asking-rent signal, but it is not a quoted rent for a particular address, lease term, bedroom count, utility package, or available unit.","q":"What does the current Zillow ZORI figure represent?"},{"a":"They are created by scaling the ZIP-wide ZORI with the local HUD bedroom ladder. That method produces a consistent studio-through-four-bedroom comparison, but it does not observe actual bedroom-specific listings or signed leases. The figures therefore describe a modelled allocation, not measured bedroom rents.","q":"Why are the bedroom figures described as modelled estimates?"},{"a":"It divides annualized asking rent by 30% to show the income level associated with that arithmetic threshold. It is not affordability advice, a tenant-screening standard, or an applicant qualification rule. Actual household affordability depends on factors that are not captured in this ZIP-level calculation.","q":"How should the 30% required-income screen be used?"},{"a":"Redfin here reports direct rolling-three-month ZIP for-sale outcomes, including sold prices, time on market, inventory, and sale-to-list signals. Those are resale-market observations rather than rental transactions. They can highlight a cross-market tension, but they cannot be used as rental comps or property-level operating economics.","q":"Why should Redfin resale evidence remain separate from the rental analysis?"}],"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 2025Q4 + SAFMR FY2026","pulledAt":"2026-07-26","url":"https://www.huduser.gov/portal/datasets/usps_crosswalk.html"},{"key":"realtor_county","name":"Realtor.com Economic Research — county listing inventory","release":"county inventory 2026-06","pulledAt":"2026-07-28","url":"https://www.realtor.com/research/data/"},{"key":"redfin","name":"Redfin Data Center — inventory, days on market, and price cuts","release":"metro tracker through 2026-05-01","pulledAt":"2026-07-26","url":"https://www.redfin.com/news/data-center/"},{"key":"redfin_zip","name":"Redfin Data Center — ZIP resale activity and supply","release":"ZIP rolling 3 months through 2026-06-30; updated 2026-07-03","pulledAt":"2026-08-12","url":"https://www.redfin.com/news/data-center/"},{"key":"zillow_county","name":"Zillow ZHVI and ZORI — county values and rents","release":"county ZHVI/ZORI 2026-06","pulledAt":"2026-07-26","url":"https://www.zillow.com/research/data/"},{"key":"zillow_zori","name":"Zillow ZORI — metro market rents","release":"Metro_zori_uc_sfrcondomfr_sm_sa_month.csv","pulledAt":"2026-07-26","url":"https://www.zillow.com/research/data/"},{"key":"zillow_zori_city","name":"Zillow ZORI — city market rents","release":"zillow_zori_city.csv","pulledAt":"2026-07-29","url":"https://www.zillow.com/research/data/"},{"key":"zillow_zori_zip","name":"Zillow ZORI — ZIP market rents","release":"ZORI ZIP 2026-06","pulledAt":"2026-08-08","url":"https://www.zillow.com/research/data/"}],"history":[{"period":"2021-03-01","rent":1490.715966},{"period":"2021-04-01","rent":1496.146165},{"period":"2021-05-01","rent":1509.735709},{"period":"2021-06-01","rent":1535.881508},{"period":"2021-07-01","rent":1547.136316},{"period":"2021-08-01","rent":1563.035733},{"period":"2021-09-01","rent":1587.608161},{"period":"2021-10-01","rent":1621.359422},{"period":"2021-11-01","rent":1659.829127},{"period":"2021-12-01","rent":1684.385418},{"period":"2022-01-01","rent":1699.154246},{"period":"2022-02-01","rent":1720.108356},{"period":"2022-03-01","rent":1734.114083},{"period":"2022-04-01","rent":1740.135497},{"period":"2022-05-01","rent":1738.89853},{"period":"2022-06-01","rent":1739.06623},{"period":"2022-07-01","rent":1752.891302},{"period":"2022-08-01","rent":1750.109092},{"period":"2022-09-01","rent":1747.868205},{"period":"2022-10-01","rent":1727.080749},{"period":"2022-11-01","rent":1709.654207},{"period":"2022-12-01","rent":1708.045662},{"period":"2023-01-01","rent":1707.734641},{"period":"2023-02-01","rent":1719.757337},{"period":"2023-03-01","rent":1713.102883},{"period":"2023-04-01","rent":1723.132222},{"period":"2023-05-01","rent":1716.557043},{"period":"2023-06-01","rent":1722.142611},{"period":"2023-07-01","rent":1721.013076},{"period":"2023-08-01","rent":1738.016799},{"period":"2023-09-01","rent":1742.233069},{"period":"2023-10-01","rent":1753.29902},{"period":"2023-11-01","rent":1753.145711},{"period":"2023-12-01","rent":1767.774472},{"period":"2024-01-01","rent":1783.7954},{"period":"2024-02-01","rent":1790.810346},{"period":"2024-03-01","rent":1806.347082},{"period":"2024-04-01","rent":1813.919495},{"period":"2024-05-01","rent":1842.657267},{"period":"2024-06-01","rent":1852.604215},{"period":"2024-07-01","rent":1864.885552},{"period":"2024-08-01","rent":1851.632552},{"period":"2024-09-01","rent":1854.334751},{"period":"2024-10-01","rent":1857.913393},{"period":"2024-11-01","rent":1881.48911},{"period":"2024-12-01","rent":1886.400409},{"period":"2025-01-01","rent":1887.606197},{"period":"2025-02-01","rent":1883.845435},{"period":"2025-03-01","rent":1883.480393},{"period":"2025-04-01","rent":1891.581376},{"period":"2025-05-01","rent":1880.044761},{"period":"2025-06-01","rent":1879.164423},{"period":"2025-07-01","rent":1876.494289},{"period":"2025-08-01","rent":1885.819933},{"period":"2025-09-01","rent":1887.738888},{"period":"2025-10-01","rent":1887.435877},{"period":"2025-11-01","rent":1875.063133},{"period":"2025-12-01","rent":1865.379362},{"period":"2026-01-01","rent":1856.67033},{"period":"2026-02-01","rent":1852.047362},{"period":"2026-03-01","rent":1843.293275},{"period":"2026-04-01","rent":1827.572582},{"period":"2026-05-01","rent":1818.320894},{"period":"2026-06-01","rent":1806.247104}],"historySummary":{"pointCount":64,"firstPeriod":"2021-03-01","latestPeriod":"2026-06-01","coverageMonths":64,"coverageRatio":1,"changes":{"1":{"years":1,"startPeriod":"2025-06-01","endPeriod":"2026-06-01","startRent":1879.164423,"endRent":1806.247104,"change":-0.03880305422321206,"cagr":-0.03880305422321206},"3":{"years":3,"startPeriod":"2023-06-01","endPeriod":"2026-06-01","startRent":1722.142611,"endRent":1806.247104,"change":0.04883712444183863,"cagr":0.016020998375683604},"5":{"years":5,"startPeriod":"2021-06-01","endPeriod":"2026-06-01","startRent":1535.881508,"endRent":1806.247104,"change":0.17603284797149876,"cagr":0.032960918289083097}},"maxDrawdown":-0.04511266239068745,"annualizedVolatility":0.025971098983742207,"consecutiveReturnCount":63}}