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 2026-07-01
Last Updated 2026-08-25 8:46 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 2278.659548573670
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 2095.177060940100
1998-01-01 2156.112963750530
1998-02-01 1974.567498956800
1998-03-01 2196.724510594250
1998-04-01 2131.190054129430
1998-05-01 2154.961369284160
1998-06-01 2365.130966200250
1998-07-01 2344.686372181430
1998-08-01 2295.905938431900
1998-09-01 3262.469913983570
1998-10-01 2250.174503815520
1998-11-01 2330.557367855440
1998-12-01 2570.784530500910
1999-01-01 2100.421094086890
1999-02-01 2368.363697408030
1999-03-01 2439.477441106280
1999-04-01 2545.256971093710
1999-05-01 2328.833991340200
1999-06-01 2277.761491231330
1999-07-01 2599.068386217220
1999-08-01 2340.673542949920
1999-09-01 2269.698466833950
1999-10-01 2163.783976840260
1999-11-01 2297.063647882900
1999-12-01 2314.054688297530
2000-01-01 2459.553009873020
2000-02-01 2487.720167342730
2000-03-01 2917.600127895790
2000-04-01 2121.960531241290
2000-05-01 2446.055717446910
2000-06-01 2501.758631328260
2000-07-01 2240.951579875600
2000-08-01 2443.754514791430
2000-09-01 1910.775274148980
2000-10-01 2477.718774405310
2000-11-01 3218.765840719670
2000-12-01 2626.288241820700
2001-01-01 2533.680123399640
2001-02-01 2573.967970588830
2001-03-01 2381.239025866410
2001-04-01 2154.353563224690
2001-05-01 2290.419533820870
2001-06-01 2346.906833982470
2001-07-01 2203.076977845640
2001-08-01 2333.749988937350
2001-09-01 2223.860531237480
2001-10-01 2495.785668378880
2001-11-01 2594.872227869850
2001-12-01 2026.371532410060
2002-01-01 2561.524273695770
2002-02-01 2730.270298776690
2002-03-01 2106.701570108950
2002-04-01 2379.881214503790
2002-05-01 2268.153054093760
2002-06-01 2298.483516162120
2002-07-01 2630.904170562590
2002-08-01 2650.740671740200
2002-09-01 2711.233084807410
2002-10-01 2843.796417507770
2002-11-01 2522.208912802500
2002-12-01 2308.851847260930
2003-01-01 2497.687637416690
2003-02-01 2191.754499560890
2003-03-01 2488.917382138230
2003-04-01 2520.978328548000
2003-05-01 2740.819674703180
2003-06-01 3163.793377747950
2003-07-01 2539.905302432960
2003-08-01 2462.139479426110
2003-09-01 2509.996154857100
2003-10-01 2469.246149253790
2003-11-01 2171.322340687990
2003-12-01 2623.641775672400
2004-01-01 2411.063841817390
2004-02-01 1840.642123896050
2004-03-01 2353.021554719270
2004-04-01 2387.701737266120
2004-05-01 1988.077154722250
2004-06-01 1885.571749786580
2004-07-01 2138.209193336420
2004-08-01 2287.909618184360
2004-09-01 2947.900030123200
2004-10-01 2015.031484365590
2004-11-01 2099.270304546250
2004-12-01 2478.152088331270
2005-01-01 1994.408882183130
2005-02-01 1995.988783674250
2005-03-01 2300.858283205790
2005-04-01 2137.230075232880
2005-05-01 2356.348364606700
2005-06-01 2572.774886364520
2005-07-01 1970.070639756230
2005-08-01 1806.235231670870
2005-09-01 1884.029830702480
2005-10-01 1966.936173821200
2005-11-01 1991.694797461570
2005-12-01 1668.569527850420
2006-01-01 1962.844428492470
2006-02-01 1901.805821979310
2006-03-01 1662.990447119110
2006-04-01 1525.741711592890
2006-05-01 1611.174851008180
2006-06-01 1474.459609280850
2006-07-01 1266.587608611290
2006-08-01 1436.196569814260
2006-09-01 1439.138529993900
2006-10-01 1334.261258781020
2006-11-01 1461.500802572820
2006-12-01 1223.633860463030
2007-01-01 1293.076136440390
2007-02-01 1595.690612091880
2007-03-01 1417.792460343610
2007-04-01 1127.580041812070
2007-05-01 1513.537721115370
2007-06-01 1268.527195669560
2007-07-01 1298.764634986590
2007-08-01 1170.399952447830
2007-09-01 949.724055477990
2007-10-01 967.298393271474
2007-11-01 974.608658355353
2007-12-01 908.045775877129
2008-01-01 924.617770363736
2008-02-01 825.784112070946
2008-03-01 733.853771187257
2008-04-01 779.590836625327
2008-05-01 646.821406580022
2008-06-01 771.737715337214
2008-07-01 780.606183748730
2008-08-01 765.212273767900
2008-09-01 740.733431980690
2008-10-01 1161.406727534570
2008-11-01 609.161275086545
2008-12-01 678.985526972272
2009-01-01 611.410593587290
2009-02-01 658.096819765998
2009-03-01 672.759745340663
2009-04-01 741.004598377453
2009-05-01 608.915513747772
2009-06-01 763.395435298384
2009-07-01 839.745573654402
2009-08-01 675.936716749739
2009-09-01 861.621762806131
2009-10-01 874.425207151077
2009-11-01 798.894900848115
2009-12-01 930.472499512677
2010-01-01 824.513707758343
2010-02-01 535.141179608794
2010-03-01 912.926475116645
2010-04-01 911.510690288902
2010-05-01 743.002955334690
2010-06-01 727.851437952305
2010-07-01 721.647789447000
2010-08-01 801.768215929136
2010-09-01 789.297118311002
2010-10-01 624.969647494541
2010-11-01 792.362001946355
2010-12-01 655.573280704285
2011-01-01 749.951720579981
2011-02-01 745.124299754978
2011-03-01 755.824099362782
2011-04-01 687.590826217356
2011-05-01 812.109020157973
2011-06-01 781.232660716618
2011-07-01 793.919799898821
2011-08-01 849.096427129137
2011-09-01 786.490843625836
2011-10-01 818.554750533487
2011-11-01 740.259254494126
2011-12-01 933.589443088710
2012-01-01 893.688462345077
2012-02-01 1083.676423538210
2012-03-01 713.243839162646
2012-04-01 704.632218563634
2012-05-01 1066.452911453810
2012-06-01 926.254006296207
2012-07-01 878.797231562945
2012-08-01 1018.606576604720
2012-09-01 970.683882661458
2012-10-01 967.352466489299
2012-11-01 1074.822286511370
2012-12-01 1085.875796784160
2013-01-01 1102.317379995160
2013-02-01 1326.238534000450
2013-03-01 1265.180698257870
2013-04-01 1330.131731221810
2013-05-01 1267.759816144330
2013-06-01 933.463739952339
2013-07-01 1308.050242274380
2013-08-01 1061.928802660930
2013-09-01 1091.130419932090
2013-10-01 1294.008535923710
2013-11-01 1190.505067032420
2013-12-01 1006.252463398490
2014-01-01 1069.770651876610
2014-02-01 1069.774651189810
2014-03-01 1052.692382432890
2014-04-01 1075.005148750440
2014-05-01 1153.233761062120
2014-06-01 1036.461151610070
2014-07-01 1059.440810274060
2014-08-01 1152.351166095960
2014-09-01 1152.172249337910
2014-10-01 1065.639532024710
2014-11-01 1066.478707618560
2014-12-01 949.364938320417
2015-01-01 1021.730757801230
2015-02-01 806.179646830551
2015-03-01 940.202379756014
2015-04-01 1030.590506401310
2015-05-01 948.578354184442
2015-06-01 1165.817729836990
2015-07-01 1137.850707315570
2015-08-01 1023.424914131440
2015-09-01 1003.176283639980
2015-10-01 1192.487214299630
2015-11-01 971.368998452774
2015-12-01 1201.693256037110
2016-01-01 1122.598263307940
2016-02-01 1000.152807368390
2016-03-01 1107.181387143720
2016-04-01 1018.004890445480
2016-05-01 1048.555337158280
2016-06-01 1053.369915200690
2016-07-01 974.075684287034
2016-08-01 1275.561204640460
2016-09-01 1078.031827526020
2016-10-01 939.522382507386
2016-11-01 1117.107337528700
2016-12-01 1299.617378484690
2017-01-01 1057.894988214930
2017-02-01 1241.973258923830
2017-03-01 1294.900585291150
2017-04-01 1082.497767393670
2017-05-01 1337.910747969100
2017-06-01 1185.101469054740
2017-07-01 1141.871141924150
2017-08-01 1287.858686610040
2017-09-01 1389.086822631530
2017-10-01 1148.732688601640
2017-11-01 1289.829884905760
2017-12-01 953.270063862444
2018-01-01 1240.280382726140
2018-02-01 1144.734525622480
2018-03-01 1125.425420311420
2018-04-01 1220.463297213560
2018-05-01 1122.621141241520
2018-06-01 1131.168820382500
2018-07-01 1197.654520508940
2018-08-01 1101.297621537090
2018-09-01 855.045013579993
2018-10-01 1268.330290114600
2018-11-01 1032.889796577670
2018-12-01 1094.224411693600
2019-01-01 1017.530951722550
2019-02-01 1051.934134660320
2019-03-01 1024.528649590790
2019-04-01 1200.605953271950
2019-05-01 1058.953065578260
2019-06-01 1063.382535639720
2019-07-01 1094.389342812270
2019-08-01 1068.466202290190
2019-09-01 963.000714166848
2019-10-01 1000.285161157470
2019-11-01 1050.652122589800
2019-12-01 927.493785517155
2020-01-01 1080.372232909220
2020-02-01 1167.701667265690
2020-03-01 818.961766506345
2020-04-01 862.974640268843
2020-05-01 806.835662615927
2020-06-01 981.515692477348
2020-07-01 1087.425673789170
2020-08-01 1049.794885740510
2020-09-01 1250.819245199590
2020-10-01 1343.098914698650
2020-11-01 1228.517281987430
2020-12-01 1296.489460445300
2021-01-01 1345.404267725900
2021-02-01 1120.776816264380
2021-03-01 1234.066255785460
2021-04-01 1064.197014729830
2021-05-01 1087.042759560170
2021-06-01 1085.480818738250
2021-07-01 958.004607682533
2021-08-01 1025.266404388570
2021-09-01 1074.166359547260
2021-10-01 988.813546886717
2021-11-01 1042.838593759400
2021-12-01 1153.442775767910
2022-01-01 1009.735411917510
2022-02-01 1155.595185448490
2022-03-01 1279.134200063000
2022-04-01 993.485785730473
2022-05-01 1060.023217051390
2022-06-01 980.947455151065
2022-07-01 731.043403195415
2022-08-01 868.269778724037
2022-09-01 872.365310778252
2022-10-01 858.639095532147
2022-11-01 899.487550116399
2022-12-01 749.105159769339
2023-01-01 707.483493129548
2023-02-01 826.876641434880
2023-03-01 856.007847700596
2023-04-01 904.933696338426
2023-05-01 1116.224618612380
2023-06-01 870.889221327308
2023-07-01 656.550954170174
2023-08-01 948.696914667267
2023-09-01 824.811765172181
2023-10-01 847.414413722417
2023-11-01 828.752992162456
2023-12-01 854.883403239974
2024-01-01 1008.809040460240
2024-02-01 1043.234518862170
2024-03-01 1003.546752149650
2024-04-01 1056.536160969540
2024-05-01 911.695089376511
2024-06-01 800.680696333265
2024-07-01 930.594175315990
2024-08-01 914.349625416454
2024-09-01 738.409127313903
2024-10-01 1018.006634868670
2024-11-01 1025.233732552030
2024-12-01 967.281527055632
2025-01-01 1223.850055429670
2025-02-01 890.660814926588
2025-03-01 819.029626849881
2025-04-01 765.101684897967
2025-05-01 870.972824415499
2025-06-01 901.187541660635
2025-07-01 888.422853448752
2025-08-01 774.470645870852
2025-09-01 781.884867765091
2025-10-01 688.193932521955
2025-11-01 651.663265460729
2025-12-01 970.287983004695
2026-01-01 723.567958790856
2026-02-01 760.714993056455
2026-03-01 766.455575077232
2026-04-01 845.667999937651
2026-05-01 854.369946992475
2026-06-01 940.518230152841
2026-07-01 865.660403860279

Back to Top