Table Data - New Private Housing Units Authorized by Building Permits: 1-Unit Structures for Washington

Title New Private Housing Units Authorized by Building Permits: 1-Unit Structures for Washington
Series ID WABP1FHSA
Source U.S. Census Bureau
Release Housing Units Authorized By Building Permits (Not a Press Release)
Seasonal Adjustment Seasonally Adjusted
Frequency Monthly
Units Units
Date Range 1988-01-01 to 2026-01-01
Last Updated 2026-03-24 12:10 PM CDT
Notes This series represents the total number of building permits for 1-unit structure types. The 1-unit structure type is a single-family home or house. A single-family home or house types include fully detached, semidetached (semidetached, side-by-side), row houses, and townhouses. For attached units, each must be separated from the adjacent unit by a ground-to-roof wall in order to be classified as a single-family structure. These units also must not share heating/air-conditioning systems or utilities. Units built on top of one another and those built side-by-side that do not have a ground-to-roof wall and/or have common facilities (i.e., attic, basement, heating plant, plumbing, etc.) are not included under single-family structures.

The Federal Reserve Bank of St. Louis seasonally adjusts this series by using the 'statsmodels' library from Python with default parameter settings. The package uses the U.S. Bureau of the Census X-13ARIMA-SEATS Seasonal Adjustment Program. More information on the 'statsmodels' X-13ARIMA-SEATS package can be found here. More information on X-13ARIMA-SEATS can be found here.

Many series include both seasonally adjusted (SA) and not seasonally adjusted (NSA) data. Occasionally, updates to the data will not include sufficient seasonal factors to trigger a seasonal adjustment. In these cases, the NSA series will be updated normally; but the SA series will also be updated with the NSA data. The NSA series can be located here here.

Some seasonally adjusted series may exhibit negative values because they are created from a seasonal adjustment process regardless of the actual meaning or interpretation of the given indicator.
DATE VALUE
1988-01-01 1620.538262186980
1988-02-01 1678.133863453770
1988-03-01 1824.084125370160
1988-04-01 1751.615972683890
1988-05-01 1652.170045972740
1988-06-01 1717.082023579920
1988-07-01 1736.617540273820
1988-08-01 1849.784376777750
1988-09-01 1882.840373532150
1988-10-01 1809.341306653170
1988-11-01 2053.976526341930
1988-12-01 1907.075858464670
1989-01-01 1954.030059148300
1989-02-01 1750.206229539320
1989-03-01 1906.690047286030
1989-04-01 1988.767490756130
1989-05-01 2066.213029562700
1989-06-01 2076.066593164070
1989-07-01 1981.021167473730
1989-08-01 2202.226338062250
1989-09-01 2273.510586046040
1989-10-01 2494.216818593610
1989-11-01 2652.119303065620
1989-12-01 2284.191130048610
1990-01-01 3126.401430557580
1990-02-01 2651.252624241420
1990-03-01 2487.900719566290
1990-04-01 2373.818111403700
1990-05-01 2376.806578713010
1990-06-01 2226.103882216520
1990-07-01 2303.253671780220
1990-08-01 2218.764281400330
1990-09-01 1976.982792460190
1990-10-01 1930.589207233180
1990-11-01 1756.619809513000
1990-12-01 1441.830619230190
1991-01-01 1659.546048407360
1991-02-01 1885.570126528200
1991-03-01 1793.175967746000
1991-04-01 2018.680918669310
1991-05-01 2254.739582658630
1991-06-01 2280.145833268910
1991-07-01 2488.643969897930
1991-08-01 1975.717357536070
1991-09-01 2119.235492055820
1991-10-01 2186.286453173120
1991-11-01 2207.738014876430
1991-12-01 2322.853695125410
1992-01-01 2506.415318138020
1992-02-01 2533.263340364950
1992-03-01 2596.601355308140
1992-04-01 2502.629598751680
1992-05-01 2354.368953619770
1992-06-01 2467.429734124800
1992-07-01 2506.841777187180
1992-08-01 2275.793599866530
1992-09-01 2547.561910979290
1992-10-01 2613.322065355910
1992-11-01 2438.067274814250
1992-12-01 2469.081572360600
1993-01-01 1972.834722972600
1993-02-01 2234.150641385600
1993-03-01 2434.837360452400
1993-04-01 2384.014541992550
1993-05-01 2297.165007369310
1993-06-01 2500.355653493340
1993-07-01 2589.554035054750
1993-08-01 2652.449027722090
1993-09-01 2814.320713628840
1993-10-01 2705.290421635600
1993-11-01 2986.397865762700
1993-12-01 2974.730278630450
1994-01-01 3113.341063979840
1994-02-01 2718.674460302530
1994-03-01 2889.798886624700
1994-04-01 2829.192225501180
1994-05-01 2777.017979462250
1994-06-01 2681.165978779660
1994-07-01 2653.379702859710
1994-08-01 2728.328770296090
1994-09-01 2637.064908317340
1994-10-01 2461.276254353220
1994-11-01 2362.093223918600
1994-12-01 2035.618062703380
1995-01-01 2251.726445351250
1995-02-01 2309.036460563540
1995-03-01 2149.995117643660
1995-04-01 1997.766139861910
1995-05-01 2313.702821232810
1995-06-01 2472.563281846990
1995-07-01 2114.646624003750
1995-08-01 2308.553008779650
1995-09-01 2028.382339495980
1995-10-01 2400.267456524110
1995-11-01 2559.902633204710
1995-12-01 2933.013187290140
1996-01-01 2633.393014718440
1996-02-01 2733.990266933170
1996-03-01 2630.739877906690
1996-04-01 2632.570917624470
1996-05-01 2564.023951262030
1996-06-01 2337.199709457080
1996-07-01 2537.753306040070
1996-08-01 2380.383638499580
1996-09-01 2256.946404554560
1996-10-01 2360.233975436000
1996-11-01 2272.110220121400
1996-12-01 2304.562254019140
1997-01-01 2283.729669875000
1997-02-01 2360.898186837960
1997-03-01 2113.589665924010
1997-04-01 2353.851102722740
1997-05-01 2450.917192587480
1997-06-01 2509.670876294720
1997-07-01 2574.639969110900
1997-08-01 2363.902459867670
1997-09-01 2732.822060824390
1997-10-01 2734.863339578830
1997-11-01 2566.211223223300
1997-12-01 2719.260079922840
1998-01-01 2531.355294770270
1998-02-01 2558.804506408230
1998-03-01 2672.150176474610
1998-04-01 2719.548673991810
1998-05-01 2526.580622964800
1998-06-01 2640.743066752880
1998-07-01 2566.927203407330
1998-08-01 2416.669862658220
1998-09-01 2546.905783539820
1998-10-01 2477.722426322300
1998-11-01 2456.035929009270
1998-12-01 2359.963452590010
1999-01-01 2444.724520149590
1999-02-01 2383.451745917220
1999-03-01 2510.333788540230
1999-04-01 2475.950148428560
1999-05-01 2437.230836637820
1999-06-01 2723.546335631320
1999-07-01 2434.078063629720
1999-08-01 2487.450357613950
1999-09-01 2434.193411493450
1999-10-01 2284.020348439670
1999-11-01 2438.345851959140
1999-12-01 2460.681230016200
2000-01-01 2173.180802203940
2000-02-01 2327.186486864440
2000-03-01 2264.842551859250
2000-04-01 2132.697665385540
2000-05-01 2391.816536948820
2000-06-01 2212.683639586460
2000-07-01 2019.546965940640
2000-08-01 2645.786622126880
2000-09-01 2247.146269258680
2000-10-01 2389.937461248600
2000-11-01 2354.769198288920
2000-12-01 2267.081607538060
2001-01-01 2497.143045708100
2001-02-01 2436.456396749620
2001-03-01 2512.016384255370
2001-04-01 2374.631471459820
2001-05-01 2338.898119252210
2001-06-01 2298.294761848560
2001-07-01 2238.501801109910
2001-08-01 2558.977072787770
2001-09-01 2207.612199651530
2001-10-01 2142.879347300880
2001-11-01 2133.959417480500
2001-12-01 2207.382831010870
2002-01-01 2369.786342619540
2002-02-01 2400.899243222270
2002-03-01 2252.799654161210
2002-04-01 2711.758435434060
2002-05-01 2688.439407498210
2002-06-01 2689.845818863130
2002-07-01 2840.520053974800
2002-08-01 2803.585502840560
2002-09-01 2661.872181004050
2002-10-01 3023.567428193170
2002-11-01 3109.299189648520
2002-12-01 2828.383130351600
2003-01-01 3062.949357596370
2003-02-01 2899.171757187060
2003-03-01 2715.369727372040
2003-04-01 3255.554119512050
2003-05-01 2567.407258989320
2003-06-01 2475.220252926680
2003-07-01 2846.279341936080
2003-08-01 2775.566003372040
2003-09-01 2858.618749933720
2003-10-01 2848.975820073180
2003-11-01 2677.869590162200
2003-12-01 2900.723123465120
2004-01-01 2652.500992140640
2004-02-01 2759.863622838630
2004-03-01 2869.060537360640
2004-04-01 2967.580391998250
2004-05-01 3183.843717659180
2004-06-01 3252.930782653750
2004-07-01 3040.534280563340
2004-08-01 2878.531561771850
2004-09-01 3244.073775857110
2004-10-01 3057.821889845580
2004-11-01 3311.074986705620
2004-12-01 3179.124013718870
2005-01-01 3412.917750525540
2005-02-01 3186.062625679060
2005-03-01 3476.102879218420
2005-04-01 3196.100722786620
2005-05-01 3116.216163695070
2005-06-01 3135.947064288200
2005-07-01 3062.977240222670
2005-08-01 3602.570086766720
2005-09-01 3490.226183215920
2005-10-01 3347.183120989740
2005-11-01 4061.438984429020
2005-12-01 3476.943786278720
2006-01-01 3049.918085631710
2006-02-01 3205.028053831960
2006-03-01 2988.429718382230
2006-04-01 2849.562928570210
2006-05-01 2821.329064569160
2006-06-01 2901.286342168880
2006-07-01 2371.446022856090
2006-08-01 3186.171984042390
2006-09-01 2571.980016231240
2006-10-01 2721.864002271270
2006-11-01 2533.028244050540
2006-12-01 2100.495181664620
2007-01-01 2839.219509199510
2007-02-01 2681.451058813820
2007-03-01 2899.230309394400
2007-04-01 2532.191908560510
2007-05-01 2714.354460462220
2007-06-01 2492.590251891260
2007-07-01 2375.083126853320
2007-08-01 2279.907106134620
2007-09-01 1987.028633562430
2007-10-01 2141.697390679850
2007-11-01 1860.508271091630
2007-12-01 1360.937067517770
2008-01-01 1739.151519149320
2008-02-01 1705.577196710710
2008-03-01 1505.447881563760
2008-04-01 1628.928181079030
2008-05-01 1518.359290568070
2008-06-01 1412.159176077340
2008-07-01 1455.524088698760
2008-08-01 1236.484433197630
2008-09-01 1402.021877518890
2008-10-01 1143.430618257290
2008-11-01 911.297793849942
2008-12-01 884.666804617933
2009-01-01 803.975290646032
2009-02-01 872.906603110075
2009-03-01 810.905436433713
2009-04-01 939.535975147004
2009-05-01 983.562821407603
2009-06-01 1075.771289212930
2009-07-01 1195.617006346200
2009-08-01 1229.301026004330
2009-09-01 1203.908464939220
2009-10-01 1214.691912644730
2009-11-01 1140.578955686890
2009-12-01 1303.923643246380
2010-01-01 1254.403493604500
2010-02-01 1361.886889389220
2010-03-01 1578.812216472350
2010-04-01 1278.347326118960
2010-05-01 981.180229400799
2010-06-01 1257.775281048050
2010-07-01 1081.120838287380
2010-08-01 1110.770118220000
2010-09-01 1120.416824551540
2010-10-01 1120.035351222240
2010-11-01 1170.951875154640
2010-12-01 1119.895195963350
2011-01-01 1369.441851416170
2011-02-01 1056.017672421080
2011-03-01 1141.324888864470
2011-04-01 1120.253947669150
2011-05-01 1030.786878693990
2011-06-01 1043.952490770290
2011-07-01 1046.019815286010
2011-08-01 1147.348666466740
2011-09-01 1148.617288774760
2011-10-01 998.177472802489
2011-11-01 1308.058697495570
2011-12-01 1007.989012222210
2012-01-01 1184.691891560150
2012-02-01 1246.180574574750
2012-03-01 1572.366985048800
2012-04-01 1223.245512728840
2012-05-01 1435.250111888520
2012-06-01 1340.235969458840
2012-07-01 1396.199759094310
2012-08-01 1564.829489517490
2012-09-01 1445.295121363370
2012-10-01 1649.007637648450
2012-11-01 1563.504022107100
2012-12-01 1583.221343519930
2013-01-01 1647.861611437670
2013-02-01 1567.586524923130
2013-03-01 1582.011297837430
2013-04-01 1637.594842626120
2013-05-01 1604.495802745040
2013-06-01 1564.116861305920
2013-07-01 1647.671421307150
2013-08-01 1456.950858061510
2013-09-01 1219.744762894540
2013-10-01 1541.167670175580
2013-11-01 1457.590085614150
2013-12-01 1400.933769709290
2014-01-01 1653.209532852240
2014-02-01 1305.925452375950
2014-03-01 1327.519530879530
2014-04-01 1401.020683870920
2014-05-01 1349.604751579500
2014-06-01 1443.640573881610
2014-07-01 1553.979451233280
2014-08-01 1392.993067008580
2014-09-01 1508.434979457590
2014-10-01 1409.047717487750
2014-11-01 1469.513068653230
2014-12-01 1755.558636935400
2015-01-01 1502.807395158840
2015-02-01 1535.275228363260
2015-03-01 1534.270147582350
2015-04-01 1585.380929775490
2015-05-01 1555.022991017630
2015-06-01 1586.014640958720
2015-07-01 1657.770639954430
2015-08-01 1617.815010219340
2015-09-01 1728.008766025880
2015-10-01 1760.641719575190
2015-11-01 1715.753967314490
2015-12-01 1812.603910220710
2016-01-01 1695.005928157600
2016-02-01 1872.517184859750
2016-03-01 1960.646271789800
2016-04-01 1858.498251922310
2016-05-01 1891.861273340400
2016-06-01 1922.179684004700
2016-07-01 1748.897223533550
2016-08-01 1778.388887466350
2016-09-01 1706.786439817800
2016-10-01 1688.806966969270
2016-11-01 1855.972744327170
2016-12-01 1822.567616045370
2017-01-01 1813.270699574270
2017-02-01 1891.899513596200
2017-03-01 1741.307842698140
2017-04-01 1773.013957786360
2017-05-01 2076.293343469990
2017-06-01 1916.412343325530
2017-07-01 1895.459890695660
2017-08-01 2061.762497266250
2017-09-01 1986.783580038060
2017-10-01 2012.361537860880
2017-11-01 1996.298549721150
2017-12-01 2031.275830375530
2018-01-01 2086.470360597540
2018-02-01 1967.865802688020
2018-03-01 2122.813648737480
2018-04-01 1999.932883592170
2018-05-01 1919.750384926860
2018-06-01 2008.334434591890
2018-07-01 1850.550829453690
2018-08-01 2112.056118684730
2018-09-01 1923.034148436220
2018-10-01 1999.744540528790
2018-11-01 1910.169305458480
2018-12-01 1679.735315387960
2019-01-01 1736.494708153100
2019-02-01 1604.269985727780
2019-03-01 1743.968314950950
2019-04-01 1906.231550218940
2019-05-01 1925.233124106920
2019-06-01 1849.140694067710
2019-07-01 2080.826345389670
2019-08-01 1999.345556148400
2019-09-01 1936.553919001300
2019-10-01 2055.986745117090
2019-11-01 2346.179346197790
2019-12-01 2144.197038331040
2020-01-01 2073.969210978460
2020-02-01 2010.325725223630
2020-03-01 1876.293418638390
2020-04-01 1050.316868305280
2020-05-01 1574.730357351000
2020-06-01 1916.636967675580
2020-07-01 2101.446291826060
2020-08-01 1968.564472152850
2020-09-01 2248.460607522950
2020-10-01 2303.255550169120
2020-11-01 2151.320117651520
2020-12-01 2357.754292476080
2021-01-01 2374.996616358050
2021-02-01 2404.638113409590
2021-03-01 2546.146543896260
2021-04-01 2148.361527630770
2021-05-01 1741.683092676130
2021-06-01 2008.658585511030
2021-07-01 1979.813977751280
2021-08-01 1994.398871953520
2021-09-01 2036.795564129660
2021-10-01 1947.384982077070
2021-11-01 2075.146827291190
2021-12-01 2167.677036850750
2022-01-01 2031.686847857530
2022-02-01 2128.279549941240
2022-03-01 2071.647837778860
2022-04-01 1818.040274045020
2022-05-01 1887.491385437980
2022-06-01 1797.231843657390
2022-07-01 1500.577129102140
2022-08-01 1725.489220192360
2022-09-01 1472.608544506270
2022-10-01 1250.412769089270
2022-11-01 1329.730907783400
2022-12-01 1154.652934518400
2023-01-01 1168.874202161950
2023-02-01 1214.945390332800
2023-03-01 1313.364487903510
2023-04-01 1361.368556079420
2023-05-01 1535.588750259130
2023-06-01 1642.346521597580
2023-07-01 1525.927738965830
2023-08-01 1607.038495882370
2023-09-01 1559.015589170240
2023-10-01 1620.265564337770
2023-11-01 1678.639982401480
2023-12-01 1652.822067058570
2024-01-01 1934.529485421300
2024-02-01 1655.219019362770
2024-03-01 1589.987383648600
2024-04-01 1624.008656743060
2024-05-01 1467.985679621750
2024-06-01 1248.705587930930
2024-07-01 1516.961172365110
2024-08-01 1594.513913959930
2024-09-01 1627.435208506770
2024-10-01 1675.003165212870
2024-11-01 1513.334572154910
2024-12-01 1533.639165273940
2025-01-01 1546.132088855700
2025-02-01 1475.769090795740
2025-03-01 1447.111683251790
2025-04-01 1591.821775455140
2025-05-01 1453.345395808890
2025-06-01 1357.792426039190
2025-07-01 1594.533215695830
2025-08-01 1331.486162114930
2025-09-01 1380.805061362980
2025-10-01 1432.029325491530
2025-11-01 1438.609146234560
2025-12-01 1740.053271677720
2026-01-01 1543.181288395900

Back to Top