Regional Data Reference
Seattle Housing Market Data
The authoritative Seattle metro housing reference. NWMLS full-footprint dashboards, Redfin weekly and monthly metro feeds, and Zillow Research data, aggregated into a single continuously-updated page for press, research, and cross-market analysis. All housing types, full metro scope.
For Jeff Reynolds\' curated condo-only submarket breakouts (Downtown Seattle, Capitol Hill, Downtown Bellevue, Kirkland), see the Seattle Condo Market Data dashboard.
This is a curated, continuously-updated aggregation of the three most authoritative Seattle housing data sources: NWMLS (the local MLS and source of truth for closed sales), Redfin (high-frequency weekly and monthly metro feeds), and Zillow Research (ZHVI, ZORI, and the research data portal). Every chart below is authoritative and attributable. Every metric is defined in the glossary. Every source is documented in the methodology section. Cite this page as the reference and cite the underlying sources as the data.
Interactive · Self-Serve
NWMLS Seattle Condos, Interactive Dashboards
The full NWMLS Seattle condos dataset, published by Northwest Multiple Listing Service on Tableau Public. Use the filters and tooltips inside each dashboard to explore the full-footprint data at your own pace.
Seattle Condos, NWMLS Overview
NWMLS · TableauTop-line interactive view of the Seattle condo market across the full NWMLS footprint. Filter by time range, area, and property characteristics directly inside the dashboard.
Seattle Condo Trends, NWMLS
NWMLS · TableauLongitudinal trend view with small-multiples across price, inventory, and velocity metrics published by NWMLS Communications.
NWMLS, Year-over-Year Active Inventory
NWMLS · TableauYear-over-year active inventory comparison across the full NWMLS footprint. Filter to Seattle or any sub-market to see how today's supply compares to prior years.
Dashboards published by NWMLS Communications on Tableau Public. Interactive filtering, tooltips, and cross-chart highlighting are available inside each embed.
Weekly + Monthly Metro Signal
Seattle Metro, Redfin Housing Dashboards
Weekly and monthly all-housing data for the Seattle metro area, sourced from Redfin and published on Tableau Public. These panels update on Redfin\'s own cadence and catch metro-wide momentum earlier than monthly NWMLS prints. Scope: all housing types, single-family + townhome + condo combined.
Seattle Metro, Housing Market Overview
Redfin · TableauMulti-panel Redfin weekly dashboard for the Seattle metro housing market. Combines new listings, pending sales, closed sales, and price trends into a single overview view. All housing types.
Seattle Metro, New Listings (Weekly)
Redfin · TableauWeekly new listings count for the Seattle metro area. Leading indicator for supply pressure. All housing types, sourced from Redfin.
Seattle Metro, Pending Sales (Weekly)
Redfin · TableauWeekly pending sales count for the Seattle metro area. Leading indicator for next month's closed volume. All housing types, sourced from Redfin.
Seattle Metro, Homes Sold (Weekly)
Redfin · TableauWeekly closed sales count for the Seattle metro area. Actual transaction volume, not offers or contracts. All housing types, sourced from Redfin.
Seattle Metro, Median Sales Price (Weekly)
Redfin · TableauWeekly median sales price for the Seattle metro area. Higher frequency than monthly NWMLS data, useful for catching inflection points early. All housing types, sourced from Redfin.
Seattle Metro, Monthly Housing Snapshot
Redfin · TableauRedfin's comprehensive monthly housing snapshot for the Seattle metro area. Multi-panel stacked dashboard covering median sale price, price per square foot, inventory, months of supply, sale-to-list ratio, days on market, and sold-above-list metrics. All housing types.
Seattle Metro, Rent Market Dashboard
Redfin · TableauRedfin's rent market dashboard for the Seattle metro area. Median asking rent, year-over-year change, and rental momentum across the metro. Essential context for investors evaluating rent-to-price ratios and cap rates at current market prices.
Data sourced from Redfin\'s housing market pipeline, published on Tableau Public. Scope is the full Seattle metro statistical area across all housing types.
Zillow Research
Zillow Home Value Index, Rent Index, and Research Data
Zillow\'s smoothed, seasonally-adjusted measures of typical home value (ZHVI), typical observed rent (ZORI), and the full Zillow Research data portal. Links below open the authoritative Zillow Research pages where you can view the latest numbers, download historical CSVs, and run your own analysis. Native charts fed by a build-time CSV fetch pipeline are on the roadmap, this is the link-out version.
Zillow Home Value Index (ZHVI)
Seattle-Tacoma-Bellevue MSA
Zillow's smoothed, seasonally-adjusted measure of typical home value across the Seattle metro area. ZHVI reflects the 35th to 65th percentile range of homes and is the closest Zillow analog to a city-wide Case-Shiller style index. Use it for long-horizon trend analysis and when you need a value measure that is less noisy than monthly median sale price.
View ZHVI on Zillow →Zillow Observed Rent Index (ZORI)
Seattle-Tacoma-Bellevue MSA
Zillow's smoothed measure of typical observed market rent across the Seattle metro area. ZORI is repeat-rent adjusted and captures the rent that a rental unit would command if it came onto the market today. Essential for rent-to-price ratio analysis and anyone tracking the rental side of the Seattle housing market.
View ZORI on Zillow →Zillow Research Data Portal
Seattle-Tacoma-Bellevue MSA
Zillow's full research data portal publishes downloadable CSV time series for housing inventory, new listings, median list price, days to pending, and several other metrics at the metro, city, and ZIP level. The portal is the canonical source for anyone wanting to run their own analysis against Zillow's complete Seattle dataset.
Open Zillow Research Data →Zillow Research is the research arm of Zillow Group. ZHVI and ZORI are proprietary Zillow metrics, please cite Zillow Research as the underlying source when referencing these numbers.
Methodology
How This Page Is Sourced
Three sources. Three different geography definitions. Three different cadences. Read this section before citing any number on the page, it will save you from comparing apples to oranges.
Northwest Multiple Listing Service (NWMLS)
- Role
- Authoritative local MLS. The source of truth for every condo and residential transaction in the Seattle region.
- Scope
- King, Pierce, Snohomish, and surrounding Western Washington counties. Published at the full footprint level and at the NWMLS numbered area level (for example Area 701 Downtown Seattle, Area 390 Capitol Hill, Area 520 Downtown Bellevue, Area 560 Kirkland).
- Products
- NWMLS InfoSparks widgets (area-specific time series, embedded as iframes) and NWMLS Communications Tableau Public dashboards (full-footprint interactive dashboards).
- Cadence
- Updates as new closed sales are reported to the MLS. No quarterly lag, no hand-entered figures.
- Geography
- NWMLS defines its own numbered areas. These do not map one-to-one to either Redfin's metro definition or Zillow's MSA definition. When comparing across sources, match geography definitions explicitly.
Redfin
- Role
- National real estate brokerage that publishes a weekly and monthly housing market data feed via Tableau Public. Useful for high-frequency metro-wide momentum reads.
- Scope
- Seattle metropolitan statistical area (MSA) as defined by Redfin's own metro boundaries. Includes all housing types: single-family, townhome, and condo combined. Not broken out by property type at the metro level.
- Products
- Tableau Public dashboards covering weekly new listings, pending sales, homes sold, and median sales price, plus a monthly housing snapshot and a rent market dashboard.
- Cadence
- Weekly feeds refresh weekly. Monthly Snapshot and Rent dashboards refresh monthly.
- Geography
- Redfin's Seattle metro is broader than Seattle city limits and does not match the NWMLS full footprint. Numbers from Redfin and NWMLS will diverge, that divergence is not an error, it reflects the different underlying geographies.
Zillow Research
- Role
- Zillow's in-house research team publishes national housing market data products. The two most cited are the Zillow Home Value Index (ZHVI) and the Zillow Observed Rent Index (ZORI).
- Scope
- Seattle-Tacoma-Bellevue MSA as defined by the Office of Management and Budget (the standard Core-Based Statistical Area definition). Zillow also publishes city-level and ZIP-level data for many metrics.
- Products
- ZHVI (typical home value time series), ZORI (typical rent time series), and the full Zillow Research data portal with downloadable CSV files for inventory, new listings, median list price, and days to pending.
- Cadence
- ZHVI and ZORI update monthly. Some inventory and listing metrics refresh weekly.
- Geography
- Zillow's Seattle-Tacoma-Bellevue MSA is the OMB CBSA definition and is the broadest geography of the three sources on this page. For any cross-source comparison, verify you are comparing the same metro definition.
Known Caveats
- Mix effects. Monthly median numbers can move even when underlying prices are flat, because the mix of what closed in the month shifted (more small units, fewer large units, etc). Cross-reference median with price per square foot to spot mix-driven moves.
- Seasonality. Seattle housing is highly seasonal. Always compare year over year, not month over month, for trend analysis.
- Off-market exclusions. NWMLS captures listed transactions only. Cash sales between family members, private off-market sales, and new-construction sales that do not list on the MLS are not captured.
- Geography mismatches. NWMLS Areas, Redfin metro, and Zillow MSA are three different geographic definitions. Numbers from different sources will diverge even when measuring the same month, that divergence is not an error.
Glossary
Plain-English Definitions
Every metric on this page, defined in the same language a buyer, seller, investor, or reporter can use without a real estate background.
Median Sale Price
The middle price point of all closed sales in a period. Median is less sensitive to outliers than average and is the cleanest single number for tracking where a market is pricing right now.
Price per Square Foot (PPSF)
Median sale price divided by median square footage of units sold in the period. The cleanest apples-to-apples comparison across unit sizes. Best long-term indicator of underlying value because it neutralizes the mix of small vs large units closing in any given month.
Days on Market (DOM)
The middle time from listing to accepted contract for closed sales. When this drops, demand is outpacing supply. When it rises, buyers have more leverage.
Months of Inventory (MOI)
Active listings divided by average monthly closed sales pace. Below 4 months is a seller's market. 4 to 6 months is balanced. Above 6 months is a buyer's market.
Sale-to-List Ratio
Final sale price as a percentage of the most recent list price. Above 100% means the unit sold over asking (bidding-war territory). Below 97% means meaningful buyer leverage and room to negotiate.
Sale-to-Original-List Ratio
Final sale price as a percentage of the very first list price, before any reductions. Below 95% means a meaningful price chase, the market did not agree with the initial pricing.
Pending Sale
A unit under contract but not yet closed. Leading indicator for next month's closed sales volume.
New Listing
A unit that came onto the market in the period. Leading indicator for future supply pressure.
Closed Sale
A unit whose sale has been recorded as closed through escrow. The cleanest signal of actual transaction volume.
Zillow Home Value Index (ZHVI)
Zillow's smoothed, seasonally-adjusted measure of typical home value, reflecting the 35th to 65th percentile range of homes in a given geography. The closest Zillow analog to a Case-Shiller style index.
Zillow Observed Rent Index (ZORI)
Zillow's smoothed, repeat-rent adjusted measure of typical observed market rent. Captures the rent that a unit would command if it came onto the rental market today.
Seattle Metro / MSA
Seattle-Tacoma-Bellevue Metropolitan Statistical Area, the OMB-defined Core-Based Statistical Area covering King, Pierce, and Snohomish counties. Different sources use slightly different metro definitions, always verify before cross-source comparison.
For Press + Researchers
How To Cite This Page
This page aggregates, it does not originate. When citing, credit the underlying data sources. This page can be cited as the aggregating reference, but each metric\'s primary source is the organization that published it.
APA Style
Reynolds, J. (n.d.). Seattle housing market data: Live NWMLS, Redfin, and Zillow feed. Jeff Reynolds Seattle. Retrieved from https://jeffreynoldsseattle.com/seattle-housing-market-data/
Chicago Style
Reynolds, Jeff. "Seattle Housing Market Data: Live NWMLS, Redfin, and Zillow Feed." Jeff Reynolds Seattle. Accessed [date]. https://jeffreynoldsseattle.com/seattle-housing-market-data/.
Short Form
Source: NWMLS / Redfin / Zillow, aggregated by jeffreynoldsseattle.com/seattle-housing-market-data
Press Contact
Reporters, analysts, and researchers covering the Seattle housing market are welcome to cite this page and its underlying sources. For expert commentary, building-level context, or a direct quote from Jeff, use any of the channels below.
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