| Washington Building Codes | https://fortress.wa.gov/es/apps/sbcc/Default.aspx |
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| Home Price Comparison Index | http://hpci.coldwellbanker.com |
| Home Price Index / First American CoreLogic | http://www.facorelogic.com |
| Interest rates | | http://www.mortgage101.com/Articles/DailyRateSurvey.asp |
| Prime forecaster | | http://forecasts.org/prime.htm |
| Real Estate Outlook | | http://www.pacapp.com/real-estate-snapshot.html |
| S&P/Case Shiller Home Price Indices | http://www2.standardandpoors.com/portal/site/sp/en/us/page.topic/indices_csmahp/0,0,0,0,0,0,0,0,0,3,1,0,0,0,0,0.html |
| Washington City Data | | http://www.city-data.com/city/Washington.html |
| Washington Geospatial Data Archive | http://wagda.lib.washington.edu/data |
| Housing Market Indicators | https://www.huduser.gov/portal/ushmc/hmi-update.html |
| Mortgage Calculator | | https://www.mortgageloan.com/calculator |