Table Data - New Private Housing Units Authorized by Building Permits: 1-Unit Structures for Washington-Arlington-Alexandria, DC-VA-MD-WV (MSA)

Title New Private Housing Units Authorized by Building Permits: 1-Unit Structures for Washington-Arlington-Alexandria, DC-VA-MD-WV (MSA)
Series ID WASH911BP1FHSA
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 2026-04-01
Last Updated 2026-06-01 10:59 AM 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 1705.842931654980
1988-02-01 2396.232729423520
1988-03-01 2455.961075658340
1988-04-01 2414.189459631760
1988-05-01 2243.923487496910
1988-06-01 2248.665797767510
1988-07-01 2502.845575795670
1988-08-01 2893.813498235140
1988-09-01 2624.565533873290
1988-10-01 2304.375443220670
1988-11-01 2594.571910175830
1988-12-01 2597.240772571500
1989-01-01 2159.501099601110
1989-02-01 2010.516352302000
1989-03-01 1666.701699964970
1989-04-01 2060.990094292910
1989-05-01 1761.201632186440
1989-06-01 1829.818002065350
1989-07-01 1831.553739978880
1989-08-01 1671.657116735980
1989-09-01 2103.909896379590
1989-10-01 1557.884257853470
1989-11-01 2159.407820814590
1989-12-01 1624.546310498920
1990-01-01 1853.424101778360
1990-02-01 1772.462764262470
1990-03-01 1585.977827049870
1990-04-01 1383.330210641240
1990-05-01 1435.971793805500
1990-06-01 1369.427581986040
1990-07-01 1087.877956791870
1990-08-01 1380.515917893100
1990-09-01 1085.132345366200
1990-10-01 1227.253100731560
1990-11-01 977.536551704233
1990-12-01 1022.450677122950
1991-01-01 902.491750900438
1991-02-01 754.388238009573
1991-03-01 1194.140424746500
1991-04-01 1152.176876099600
1991-05-01 1459.697392668150
1991-06-01 1298.842300655360
1991-07-01 1384.877208277630
1991-08-01 1209.423178936980
1991-09-01 1259.114404416210
1991-10-01 1346.146501112180
1991-11-01 1410.904517646720
1991-12-01 1419.925317704530
1992-01-01 1745.141835918870
1992-02-01 1612.602911326840
1992-03-01 1725.603989947850
1992-04-01 1773.736574713430
1992-05-01 1790.659142824230
1992-06-01 1674.524783594100
1992-07-01 1745.124973074600
1992-08-01 1500.329279150640
1992-09-01 1806.625188124630
1992-10-01 1887.244744538680
1992-11-01 1698.793293735340
1992-12-01 1927.747400317330
1993-01-01 2157.885130055810
1993-02-01 2062.577248031110
1993-03-01 1968.931382495640
1993-04-01 2410.757753266080
1993-05-01 1949.519326840980
1993-06-01 2085.015706597580
1993-07-01 2329.334289283300
1993-08-01 2119.799610003960
1993-09-01 2197.533561846440
1993-10-01 2226.371458297410
1993-11-01 2476.342447083760
1993-12-01 2238.934604169520
1994-01-01 2065.787969077100
1994-02-01 2238.397387004040
1994-03-01 2168.812229136140
1994-04-01 2114.450789896680
1994-05-01 2320.039911947280
1994-06-01 2482.490835061300
1994-07-01 2042.279810878340
1994-08-01 2432.683467771610
1994-09-01 2432.824631401590
1994-10-01 1931.471937734670
1994-11-01 2022.293975842860
1994-12-01 2201.483232504880
1995-01-01 1803.258487482790
1995-02-01 1628.919598609730
1995-03-01 2349.288891543700
1995-04-01 1709.044199789800
1995-05-01 1671.832278220100
1995-06-01 1729.669258492950
1995-07-01 1812.647121845830
1995-08-01 2531.398289783170
1995-09-01 1793.174340369330
1995-10-01 2248.048768718800
1995-11-01 2043.830969861890
1995-12-01 1766.742497471660
1996-01-01 1662.444142497760
1996-02-01 1990.175390923320
1996-03-01 1930.100006604900
1996-04-01 1916.492121546740
1996-05-01 2380.026051598320
1996-06-01 1858.632661199840
1996-07-01 1903.723709807180
1996-08-01 2053.548896897700
1996-09-01 1865.432759974430
1996-10-01 1914.167337184250
1996-11-01 1920.829579627980
1996-12-01 1662.760906490990
1997-01-01 2278.659548573660
1997-02-01 1913.892022562930
1997-03-01 1757.521365705230
1997-04-01 1974.876909778150
1997-05-01 2069.539660496940
1997-06-01 1853.896313887530
1997-07-01 1975.095886451260
1997-08-01 1745.986331492240
1997-09-01 1991.891292207910
1997-10-01 1988.517302425040
1997-11-01 1841.654486614240
1997-12-01 2095.177060940090
1998-01-01 2156.112963750530
1998-02-01 1974.567498956790
1998-03-01 2196.724510594240
1998-04-01 2131.190054129430
1998-05-01 2154.961369284170
1998-06-01 2365.130966200260
1998-07-01 2344.686372181440
1998-08-01 2295.905938431920
1998-09-01 3262.469913983580
1998-10-01 2250.174503815520
1998-11-01 2330.557367855430
1998-12-01 2570.784530500890
1999-01-01 2100.421094086870
1999-02-01 2368.363697407980
1999-03-01 2439.477441106330
1999-04-01 2545.256971093760
1999-05-01 2328.833991340240
1999-06-01 2277.761491231350
1999-07-01 2599.068386217170
1999-08-01 2340.673542949800
1999-09-01 2269.698466833800
1999-10-01 2163.783976840150
1999-11-01 2297.063647882900
1999-12-01 2314.054688297750
2000-01-01 2459.553009873520
2000-02-01 2487.720167343110
2000-03-01 2917.600127896220
2000-04-01 2121.960531241240
2000-05-01 2446.055717446470
2000-06-01 2501.758631328130
2000-07-01 2240.951579874880
2000-08-01 2443.754514790670
2000-09-01 1910.775274148640
2000-10-01 2477.718774405390
2000-11-01 3218.765840720390
2000-12-01 2626.288241822020
2001-01-01 2533.680123401300
2001-02-01 2573.967970589840
2001-03-01 2381.239025866380
2001-04-01 2154.353563223400
2001-05-01 2290.419533819250
2001-06-01 2346.906833982780
2001-07-01 2203.076977846310
2001-08-01 2333.749988940010
2001-09-01 2223.860531240280
2001-10-01 2495.785668377890
2001-11-01 2594.872227862570
2001-12-01 2026.371532404650
2002-01-01 2561.524273689430
2002-02-01 2730.270298774540
2002-03-01 2106.701570113100
2002-04-01 2379.881214512940
2002-05-01 2268.153054107480
2002-06-01 2298.483516147750
2002-07-01 2630.904170575610
2002-08-01 2650.740671752620
2002-09-01 2711.233084815850
2002-10-01 2843.796417499080
2002-11-01 2522.208912772660
2002-12-01 2308.851847232280
2003-01-01 2497.687637384700
2003-02-01 2191.754499550000
2003-03-01 2488.917382156450
2003-04-01 2520.978328589810
2003-05-01 2740.819674762150
2003-06-01 3163.793377716760
2003-07-01 2539.905302444460
2003-08-01 2462.139479428540
2003-09-01 2509.996154866790
2003-10-01 2469.246149239980
2003-11-01 2171.322340669930
2003-12-01 2623.641775669960
2004-01-01 2411.063841814400
2004-02-01 1840.642123608860
2004-03-01 2353.021554685340
2004-04-01 2387.701737923710
2004-05-01 1988.077154668920
2004-06-01 1885.571749661120
2004-07-01 2138.209193256280
2004-08-01 2287.909618137930
2004-09-01 2947.900030125370
2004-10-01 2015.031484377380
2004-11-01 2099.270304595110
2004-12-01 2478.152088411210
2005-01-01 1994.408882236300
2005-02-01 1995.988783087810
2005-03-01 2300.858283109630
2005-04-01 2137.230076368760
2005-05-01 2356.348364483270
2005-06-01 2572.774886156690
2005-07-01 1970.070639633120
2005-08-01 1806.235231552890
2005-09-01 1884.029830542690
2005-10-01 1966.936173192060
2005-11-01 1991.694797741810
2005-12-01 1668.569527759690
2006-01-01 1962.844428520940
2006-02-01 1901.805821465420
2006-03-01 1662.990447688010
2006-04-01 1525.741714013490
2006-05-01 1611.174849895570
2006-06-01 1474.459610127770
2006-07-01 1266.587608663380
2006-08-01 1436.196568828690
2006-09-01 1439.138527527820
2006-10-01 1334.261255551310
2006-11-01 1461.500801604090
2006-12-01 1223.633860882170
2007-01-01 1293.076138572510
2007-02-01 1595.690615786170
2007-03-01 1417.792464284360
2007-04-01 1127.580045536420
2007-05-01 1513.537718671380
2007-06-01 1268.527195563970
2007-07-01 1298.764632491390
2007-08-01 1170.399948325260
2007-09-01 949.724050761135
2007-10-01 967.298382714061
2007-11-01 974.608659099736
2007-12-01 908.045781582139
2008-01-01 924.617781651201
2008-02-01 825.784122673749
2008-03-01 733.853777923559
2008-04-01 779.590837865147
2008-05-01 646.821398099261
2008-06-01 771.737706290233
2008-07-01 780.606175323333
2008-08-01 765.212269492337
2008-09-01 740.733430782416
2008-10-01 1161.406713770710
2008-11-01 609.161279962130
2008-12-01 678.985537606481
2009-01-01 611.410603287843
2009-02-01 658.096843470852
2009-03-01 672.759786735481
2009-04-01 741.004623354674
2009-05-01 608.915404451572
2009-06-01 763.395411043399
2009-07-01 839.745559483559
2009-08-01 675.936725335117
2009-09-01 861.621792366207
2009-10-01 874.425230223131
2009-11-01 798.894932964168
2009-12-01 930.472525862724
2010-01-01 824.513716459178
2010-02-01 535.141203979919
2010-03-01 912.926573194120
2010-04-01 911.510746145284
2010-05-01 743.002696513936
2010-06-01 727.851354039867
2010-07-01 721.647733138400
2010-08-01 801.768216404920
2010-09-01 789.297127110598
2010-10-01 624.970000015477
2010-11-01 792.361990871014
2010-12-01 655.573270256311
2011-01-01 749.951701657017
2011-02-01 745.124347273738
2011-03-01 755.824232818962
2011-04-01 687.590886843904
2011-05-01 812.108555146048
2011-06-01 781.232408719864
2011-07-01 793.919568285309
2011-08-01 849.096331792008
2011-09-01 786.490856338285
2011-10-01 818.555789803434
2011-11-01 740.259457221393
2011-12-01 933.589806084713
2012-01-01 893.688880322260
2012-02-01 1083.675799150290
2012-03-01 713.244104092759
2012-04-01 704.632192770968
2012-05-01 1066.451874173310
2012-06-01 926.252991605510
2012-07-01 878.796372737979
2012-08-01 1018.606140941810
2012-09-01 970.684135136246
2012-10-01 967.355201288085
2012-11-01 1074.824035390740
2012-12-01 1085.878099320710
2013-01-01 1102.319278463160
2013-02-01 1326.237075916770
2013-03-01 1265.180489080700
2013-04-01 1330.129681805470
2013-05-01 1267.756099829170
2013-06-01 933.461205460626
2013-07-01 1308.048067120840
2013-08-01 1061.925359358070
2013-09-01 1091.132113531320
2013-10-01 1294.023943481540
2013-11-01 1190.508424692430
2013-12-01 1006.262058711520
2014-01-01 1069.772457597260
2014-02-01 1069.771038553280
2014-03-01 1052.688426837160
2014-04-01 1074.998410221420
2014-05-01 1153.224112548220
2014-06-01 1036.453783916590
2014-07-01 1059.436567971740
2014-08-01 1152.343791983370
2014-09-01 1152.193518290270
2014-10-01 1065.662241155710
2014-11-01 1066.482951275220
2014-12-01 949.394283857072
2015-01-01 1021.729282189410
2015-02-01 806.173080927995
2015-03-01 940.190677458110
2015-04-01 1030.571559015740
2015-05-01 948.558502767550
2015-06-01 1165.794199660370
2015-07-01 1137.829676124320
2015-08-01 1023.401989670960
2015-09-01 1003.288467151640
2015-10-01 1192.520725458400
2015-11-01 971.366846499386
2015-12-01 1201.750307740330
2016-01-01 1122.590305367280
2016-02-01 1000.133998184050
2016-03-01 1107.150827715500
2016-04-01 1017.965526775470
2016-05-01 1048.513082197670
2016-06-01 1053.329558772350
2016-07-01 974.042510031087
2016-08-01 1275.522189576410
2016-09-01 1078.262041042630
2016-10-01 939.560505200650
2016-11-01 1117.120397614560
2016-12-01 1299.720965890160
2017-01-01 1057.885088335130
2017-02-01 1241.891897335710
2017-03-01 1294.827332469240
2017-04-01 1082.487414991600
2017-05-01 1337.632611523950
2017-06-01 1185.094352976510
2017-07-01 1141.864608150990
2017-08-01 1287.842538858580
2017-09-01 1389.529922575710
2017-10-01 1148.812305177140
2017-11-01 1289.870266499650
2017-12-01 953.358164611738
2018-01-01 1240.247162629180
2018-02-01 1144.579839941110
2018-03-01 1125.296488610350
2018-04-01 1220.471416304350
2018-05-01 1122.194927173860
2018-06-01 1131.228424072910
2018-07-01 1197.730737776660
2018-08-01 1101.357379594800
2018-09-01 855.368029905434
2018-10-01 1268.471098333620
2018-11-01 1032.957277913980
2018-12-01 1094.347301507410
2019-01-01 1017.487486058710
2019-02-01 1051.718659682270
2019-03-01 1024.176911419860
2019-04-01 1200.625370247070
2019-05-01 1058.333101557350
2019-06-01 1063.450129817600
2019-07-01 1095.060964868150
2019-08-01 1068.525371597130
2019-09-01 963.344640922887
2019-10-01 1000.382442940730
2019-11-01 1050.712110661000
2019-12-01 927.569037818812
2020-01-01 1080.283099314770
2020-02-01 1167.374974095290
2020-03-01 818.471147542788
2020-04-01 862.902704905939
2020-05-01 806.198893168046
2020-06-01 981.485931825030
2020-07-01 1089.269254645040
2020-08-01 1049.882467199350
2020-09-01 1251.252282826460
2020-10-01 1343.380491973080
2020-11-01 1228.699270568530
2020-12-01 1296.498019210500
2021-01-01 1344.927342514890
2021-02-01 1119.933650103880
2021-03-01 1232.555777968300
2021-04-01 1063.660572841500
2021-05-01 1085.834725933140
2021-06-01 1085.996180488810
2021-07-01 960.924102884020
2021-08-01 1025.766779391270
2021-09-01 1074.862072473090
2021-10-01 989.493108383017
2021-11-01 1043.271594999950
2021-12-01 1153.185061615090
2022-01-01 1008.644647472700
2022-02-01 1153.284078209460
2022-03-01 1276.060030771560
2022-04-01 991.554575628581
2022-05-01 1058.859466171660
2022-06-01 982.598206282915
2022-07-01 734.614565692809
2022-08-01 869.868405526481
2022-09-01 873.979227346573
2022-10-01 860.323898355370
2022-11-01 900.735775798179
2022-12-01 748.661828652886
2023-01-01 705.816878307014
2023-02-01 823.101110587854
2023-03-01 850.742196629258
2023-04-01 897.490322459226
2023-05-01 1113.969244508090
2023-06-01 880.906451957383
2023-07-01 662.088389292108
2023-08-01 951.075588491260
2023-09-01 827.900700826929
2023-10-01 849.947310559898
2023-11-01 829.850909264072
2023-12-01 853.048287824526
2024-01-01 1003.660762644290
2024-02-01 1034.363856790830
2024-03-01 992.455168257972
2024-04-01 1040.294967055990
2024-05-01 910.774916952608
2024-06-01 821.204703375447
2024-07-01 941.185331397394
2024-08-01 916.754972730434
2024-09-01 742.462646654377
2024-10-01 1021.624838256790
2024-11-01 1026.006043366640
2024-12-01 963.336073223984
2025-01-01 1213.880977909660
2025-02-01 879.207657118869
2025-03-01 805.235760276306
2025-04-01 747.347755007573
2025-05-01 871.146367259096
2025-06-01 940.051165351754
2025-07-01 901.182462198201
2025-08-01 775.882514346072
2025-09-01 787.000918677093
2025-10-01 690.402677460668
2025-11-01 651.020034714125
2025-12-01 963.622263306594
2026-01-01 714.904517451097
2026-02-01 747.335380867412
2026-03-01 749.663995776613
2026-04-01 821.261112111937

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