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 2026-05-01
Last Updated 2026-06-24 8:44 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 2328.833991340250
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 2459.553009873530
2000-02-01 2487.720167343120
2000-03-01 2917.600127896230
2000-04-01 2121.960531241240
2000-05-01 2446.055717446460
2000-06-01 2501.758631328120
2000-07-01 2240.951579874870
2000-08-01 2443.754514790650
2000-09-01 1910.775274148630
2000-10-01 2477.718774405390
2000-11-01 3218.765840720410
2000-12-01 2626.288241822050
2001-01-01 2533.680123401340
2001-02-01 2573.967970589860
2001-03-01 2381.239025866370
2001-04-01 2154.353563223350
2001-05-01 2290.419533819200
2001-06-01 2346.906833982790
2001-07-01 2203.076977846360
2001-08-01 2333.749988940140
2001-09-01 2223.860531240410
2001-10-01 2495.785668377880
2001-11-01 2594.872227862330
2001-12-01 2026.371532404400
2002-01-01 2561.524273689150
2002-02-01 2730.270298774390
2002-03-01 2106.701570113170
2002-04-01 2379.881214513200
2002-05-01 2268.153054107930
2002-06-01 2298.483516147480
2002-07-01 2630.904170576090
2002-08-01 2650.740671753120
2002-09-01 2711.233084816220
2002-10-01 2843.796417498860
2002-11-01 2522.208912771670
2002-12-01 2308.851847231160
2003-01-01 2497.687637383520
2003-02-01 2191.754499549530
2003-03-01 2488.917382156950
2003-04-01 2520.978328591080
2003-05-01 2740.819674763900
2003-06-01 3163.793377715980
2003-07-01 2539.905302444600
2003-08-01 2462.139479428560
2003-09-01 2509.996154867360
2003-10-01 2469.246149239990
2003-11-01 2171.322340670280
2003-12-01 2623.641775670870
2004-01-01 2411.063841815380
2004-02-01 1840.642123597800
2004-03-01 2353.021554683940
2004-04-01 2387.701737945840
2004-05-01 1988.077154665600
2004-06-01 1885.571749655920
2004-07-01 2138.209193252150
2004-08-01 2287.909618135960
2004-09-01 2947.900030126630
2004-10-01 2015.031484379920
2004-11-01 2099.270304601480
2004-12-01 2478.152088420180
2005-01-01 1994.408882243600
2005-02-01 1995.988783067550
2005-03-01 2300.858283105760
2005-04-01 2137.230076401160
2005-05-01 2356.348364467350
2005-06-01 2572.774886135490
2005-07-01 1970.070639621750
2005-08-01 1806.235231549630
2005-09-01 1884.029830545200
2005-10-01 1966.936173196200
2005-11-01 1991.694797773370
2005-12-01 1668.569527774400
2006-01-01 1962.844428538760
2006-02-01 1901.805821449490
2006-03-01 1662.990447700230
2006-04-01 1525.741714067910
2006-05-01 1611.174849779000
2006-06-01 1474.459610119930
2006-07-01 1266.587608656890
2006-08-01 1436.196568827910
2006-09-01 1439.138527529630
2006-10-01 1334.261255563340
2006-11-01 1461.500801663740
2006-12-01 1223.633860924040
2007-01-01 1293.076138612670
2007-02-01 1595.690615801950
2007-03-01 1417.792464296220
2007-04-01 1127.580045554360
2007-05-01 1513.537718395430
2007-06-01 1268.527195504420
2007-07-01 1298.764632442260
2007-08-01 1170.399948339290
2007-09-01 949.724050834877
2007-10-01 967.298382956501
2007-11-01 974.608659348618
2007-12-01 908.045781798808
2008-01-01 924.617781725122
2008-02-01 825.784122539210
2008-03-01 733.853777669453
2008-04-01 779.590837517125
2008-05-01 646.821397623680
2008-06-01 771.737706089993
2008-07-01 780.606175434997
2008-08-01 765.212270007818
2008-09-01 740.733431482312
2008-10-01 1161.406715283240
2008-11-01 609.161280553438
2008-12-01 678.985538033582
2009-01-01 611.410603126427
2009-02-01 658.096842966707
2009-03-01 672.759785680553
2009-04-01 741.004621739875
2009-05-01 608.915402875913
2009-06-01 763.395410702665
2009-07-01 839.745560315922
2009-08-01 675.936727215649
2009-09-01 861.621795360056
2009-10-01 874.425233673708
2009-11-01 798.894935110845
2009-12-01 930.472527168920
2010-01-01 824.513715451312
2010-02-01 535.141202484415
2010-03-01 912.926569497950
2010-04-01 911.510740457014
2010-05-01 743.002690194929
2010-06-01 727.851349787450
2010-07-01 721.647747102103
2010-08-01 801.768214835313
2010-09-01 789.297125350211
2010-10-01 624.970021292735
2010-11-01 792.361985773513
2010-12-01 655.573265497488
2011-01-01 749.951695011360
2011-02-01 745.124342936432
2011-03-01 755.824230839114
2011-04-01 687.590886424491
2011-05-01 812.108554566142
2011-06-01 781.232403037831
2011-07-01 793.919592399405
2011-08-01 849.096310755300
2011-09-01 786.490834343742
2011-10-01 818.555832161472
2011-11-01 740.259449468448
2011-12-01 933.589811045765
2012-01-01 893.688896515955
2012-02-01 1083.675797206960
2012-03-01 713.244111752467
2012-04-01 704.632193640704
2012-05-01 1066.451868253040
2012-06-01 926.252959482558
2012-07-01 878.796382938022
2012-08-01 1018.606068232910
2012-09-01 970.684080844787
2012-10-01 967.355305512080
2012-11-01 1074.824088953040
2012-12-01 1085.878209844050
2013-01-01 1102.319377881550
2013-02-01 1326.237063627920
2013-03-01 1265.180371514040
2013-04-01 1330.129511532250
2013-05-01 1267.755990296510
2013-06-01 933.461174654591
2013-07-01 1308.048224427670
2013-08-01 1061.925404940910
2013-09-01 1091.132382815780
2013-10-01 1294.023020514490
2013-11-01 1190.508646158760
2013-12-01 1006.263315413540
2014-01-01 1069.772491286380
2014-02-01 1069.770892883400
2014-03-01 1052.688028310080
2014-04-01 1074.997936066240
2014-05-01 1153.223664833080
2014-06-01 1036.453492185320
2014-07-01 1059.436434839870
2014-08-01 1152.343403920350
2014-09-01 1152.196158380440
2014-10-01 1065.660231904420
2014-11-01 1066.483348063310
2014-12-01 949.397935709958
2015-01-01 1021.730069852630
2015-02-01 806.173263401839
2015-03-01 940.189731746558
2015-04-01 1030.569595926650
2015-05-01 948.556548816047
2015-06-01 1165.791546338910
2015-07-01 1137.827215175660
2015-08-01 1023.400169549220
2015-09-01 1003.304663472430
2015-10-01 1192.507703227730
2015-11-01 971.369704498387
2015-12-01 1201.762052145160
2016-01-01 1122.595717097760
2016-02-01 1000.136086891730
2016-03-01 1107.147423860490
2016-04-01 1017.955603053490
2016-05-01 1048.499202033030
2016-06-01 1053.314014559940
2016-07-01 974.032274058500
2016-08-01 1275.523089465160
2016-09-01 1078.314655012990
2016-10-01 939.571683720797
2016-11-01 1117.164093601710
2016-12-01 1299.759433172730
2017-01-01 1057.875193830110
2017-02-01 1241.836802999990
2017-03-01 1294.765243447010
2017-04-01 1082.441203920990
2017-05-01 1337.499807383950
2017-06-01 1185.109164885760
2017-07-01 1141.912351550440
2017-08-01 1287.912830821660
2017-09-01 1389.721776345920
2017-10-01 1148.913981401630
2017-11-01 1290.004354155500
2017-12-01 953.401945101285
2018-01-01 1240.153845377100
2018-02-01 1144.371649392420
2018-03-01 1125.062311011500
2018-04-01 1220.289244739110
2018-05-01 1121.963532744650
2018-06-01 1131.329600409610
2018-07-01 1197.939943517600
2018-08-01 1101.559461354340
2018-09-01 855.620306486624
2018-10-01 1268.795279640400
2018-11-01 1033.209284398110
2018-12-01 1094.571097465150
2019-01-01 1017.514018710130
2019-02-01 1051.651682012980
2019-03-01 1022.342070965830
2019-04-01 1200.446756102940
2019-05-01 1057.932871245690
2019-06-01 1063.377520243110
2019-07-01 1097.507706940750
2019-08-01 1068.523592311450
2019-09-01 963.503135661826
2019-10-01 1000.584737576080
2019-11-01 1050.989532099010
2019-12-01 927.834599663311
2020-01-01 1080.398399924980
2020-02-01 1167.448482549270
2020-03-01 815.786091411839
2020-04-01 862.846777771219
2020-05-01 805.554586126889
2020-06-01 981.367802683983
2020-07-01 1094.052996578620
2020-08-01 1049.726215907990
2020-09-01 1251.226848477920
2020-10-01 1343.476419304400
2020-11-01 1228.957907256640
2020-12-01 1296.949691744060
2021-01-01 1345.269429790300
2021-02-01 1120.274338769710
2021-03-01 1226.937766336930
2021-04-01 1063.775139673430
2021-05-01 1084.542186120920
2021-06-01 1085.753591649510
2021-07-01 967.097210433108
2021-08-01 1025.313077287930
2021-09-01 1074.477442806140
2021-10-01 989.220955599431
2021-11-01 1043.258270099730
2021-12-01 1153.515369025240
2022-01-01 1009.083167252740
2022-02-01 1153.876798777890
2022-03-01 1270.534607269630
2022-04-01 992.239764402219
2022-05-01 1057.123328276440
2022-06-01 982.154632924528
2022-07-01 739.107935405490
2022-08-01 869.285663617659
2022-09-01 873.425035197326
2022-10-01 859.780506665121
2022-11-01 900.562837184652
2022-12-01 749.084951308318
2023-01-01 706.537128714868
2023-02-01 824.273145948403
2023-03-01 848.112316786759
2023-04-01 900.090536946345
2023-05-01 1107.671145615050
2023-06-01 880.130967910481
2023-07-01 665.978475757764
2023-08-01 949.576166061358
2023-09-01 827.180983479222
2023-10-01 849.359582135013
2023-11-01 829.826419733426
2023-12-01 854.161457867450
2024-01-01 1005.684510345690
2024-02-01 1036.947984790770
2024-03-01 992.139252472265
2024-04-01 1045.692841232770
2024-05-01 900.022417472529
2024-06-01 820.382710476605
2024-07-01 944.905986911211
2024-08-01 914.841261833978
2024-09-01 742.013623183986
2024-10-01 1021.369331403980
2024-11-01 1026.494573362930
2024-12-01 965.592670886131
2025-01-01 1217.676454776720
2025-02-01 882.481710403369
2025-03-01 807.465857728288
2025-04-01 752.920442222862
2025-05-01 854.404864000387
2025-06-01 939.195719237134
2025-07-01 903.359249682207
2025-08-01 773.905854478472
2025-09-01 786.944142661011
2025-10-01 690.762633663358
2025-11-01 651.867511612397
2025-12-01 967.051289017941
2026-01-01 717.995718538090
2026-02-01 750.925100193674
2026-03-01 753.681919413889
2026-04-01 828.608714136538
2026-05-01 835.227827834244

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