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 2026-06-01
Last Updated 2026-07-24 8:43 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 2570.784530500900
1999-01-01 2100.421094086870
1999-02-01 2368.363697407980
1999-03-01 2439.477441106340
1999-04-01 2545.256971093760
1999-05-01 2328.833991340250
1999-06-01 2277.761491231340
1999-07-01 2599.068386217150
1999-08-01 2340.673542949770
1999-09-01 2269.698466833760
1999-10-01 2163.783976840120
1999-11-01 2297.063647882900
1999-12-01 2314.054688297800
2000-01-01 2459.553009873640
2000-02-01 2487.720167343220
2000-03-01 2917.600127896320
2000-04-01 2121.960531241240
2000-05-01 2446.055717446380
2000-06-01 2501.758631328010
2000-07-01 2240.951579874740
2000-08-01 2443.754514790520
2000-09-01 1910.775274148580
2000-10-01 2477.718774405420
2000-11-01 3218.765840720560
2000-12-01 2626.288241822320
2001-01-01 2533.680123401670
2001-02-01 2573.967970590020
2001-03-01 2381.239025866230
2001-04-01 2154.353563222980
2001-05-01 2290.419533818840
2001-06-01 2346.906833982830
2001-07-01 2203.076977846860
2001-08-01 2333.749988941300
2001-09-01 2223.860531241530
2001-10-01 2495.785668377770
2001-11-01 2594.872227860140
2001-12-01 2026.371532401970
2002-01-01 2561.524273686640
2002-02-01 2730.270298773090
2002-03-01 2106.701570113900
2002-04-01 2379.881214515570
2002-05-01 2268.153054111850
2002-06-01 2298.483516145510
2002-07-01 2630.904170580270
2002-08-01 2650.740671757410
2002-09-01 2711.233084819340
2002-10-01 2843.796417496700
2002-11-01 2522.208912762650
2002-12-01 2308.851847220630
2003-01-01 2497.687637372530
2003-02-01 2191.754499544910
2003-03-01 2488.917382161100
2003-04-01 2520.978328602700
2003-05-01 2740.819674781050
2003-06-01 3163.793377713300
2003-07-01 2539.905302447720
2003-08-01 2462.139479429100
2003-09-01 2509.996154870140
2003-10-01 2469.246149235770
2003-11-01 2171.322340666940
2003-12-01 2623.641775672150
2004-01-01 2411.063841819490
2004-02-01 1840.642123503570
2004-03-01 2353.021554676060
2004-04-01 2387.701738149820
2004-05-01 1988.077154643840
2004-06-01 1885.571749616800
2004-07-01 2138.209193216470
2004-08-01 2287.909618111130
2004-09-01 2947.900030118370
2004-10-01 2015.031484386190
2004-11-01 2099.270304641650
2004-12-01 2478.152088494750
2005-01-01 1994.408882315740
2005-02-01 1995.988782914730
2005-03-01 2300.858283093480
2005-04-01 2137.230076692120
2005-05-01 2356.348364314960
2005-06-01 2572.774885915900
2005-07-01 1970.070639499210
2005-08-01 1806.235231519600
2005-09-01 1884.029830590300
2005-10-01 1966.936173249440
2005-11-01 1991.694797986840
2005-12-01 1668.569527937490
2006-01-01 1962.844428694720
2006-02-01 1901.805821289200
2006-03-01 1662.990447770640
2006-04-01 1525.741714508750
2006-05-01 1611.174848789920
2006-06-01 1474.459610183890
2006-07-01 1266.587608858550
2006-08-01 1436.196568877570
2006-09-01 1439.138527730790
2006-10-01 1334.261255504530
2006-11-01 1461.500801491740
2006-12-01 1223.633860519850
2007-01-01 1293.076138298460
2007-02-01 1595.690615655350
2007-03-01 1417.792464704460
2007-04-01 1127.580046460930
2007-05-01 1513.537717138180
2007-06-01 1268.527196202770
2007-07-01 1298.764633247410
2007-08-01 1170.399948455750
2007-09-01 949.724050825417
2007-10-01 967.298384818053
2007-11-01 974.608657434772
2007-12-01 908.045778861950
2008-01-01 924.617778021293
2008-02-01 825.784120110140
2008-03-01 733.853777281219
2008-04-01 779.590840140840
2008-05-01 646.821400268213
2008-06-01 771.737711065291
2008-07-01 780.606179309932
2008-08-01 765.212270441336
2008-09-01 740.733429030368
2008-10-01 1161.406712676320
2008-11-01 609.161273847207
2008-12-01 678.985527461636
2009-01-01 611.410593098694
2009-02-01 658.096838697451
2009-03-01 672.759782711174
2009-04-01 741.004635630221
2009-05-01 608.915425680035
2009-06-01 763.395424554736
2009-07-01 839.745568759440
2009-08-01 675.936720902133
2009-09-01 861.621772893346
2009-10-01 874.425208562471
2009-11-01 798.894908264871
2009-12-01 930.472501751189
2010-01-01 824.513698854340
2010-02-01 535.141203021809
2010-03-01 912.926567403631
2010-04-01 911.510771214140
2010-05-01 743.002735364211
2010-06-01 727.851387397536
2010-07-01 721.647814362169
2010-08-01 801.768196185793
2010-09-01 789.297095912095
2010-10-01 624.969828014613
2010-11-01 792.361968182750
2010-12-01 655.573256566808
2011-01-01 749.951690532741
2011-02-01 745.124349261857
2011-03-01 755.824224473029
2011-04-01 687.590922256025
2011-05-01 812.108653435016
2011-06-01 781.232525445370
2011-07-01 793.919807757731
2011-08-01 849.096332298622
2011-09-01 786.490784175876
2011-10-01 818.555269744373
2011-11-01 740.259287481189
2011-12-01 933.589541194794
2012-01-01 893.688579155371
2012-02-01 1083.676431351940
2012-03-01 713.243971099226
2012-04-01 704.632226810001
2012-05-01 1066.452186675390
2012-06-01 926.253510526911
2012-07-01 878.797070702572
2012-08-01 1018.606349289540
2012-09-01 970.683950491378
2012-10-01 967.353871771679
2012-11-01 1074.823014974030
2012-12-01 1085.876733253550
2013-01-01 1102.318032147560
2013-02-01 1326.238412117640
2013-03-01 1265.180134417620
2013-04-01 1330.130298578190
2013-05-01 1267.757499545510
2013-06-01 933.462658486329
2013-07-01 1308.050269360010
2013-08-01 1061.927669106160
2013-09-01 1091.132197615520
2013-10-01 1294.015216940000
2013-11-01 1190.506975072670
2013-12-01 1006.256398124510
2014-01-01 1069.771012422350
2014-02-01 1069.773433926130
2014-03-01 1052.689378601720
2014-04-01 1075.000748965320
2014-05-01 1153.227980598980
2014-06-01 1036.457487070430
2014-07-01 1059.439594464330
2014-08-01 1152.347903523370
2014-09-01 1152.189464877920
2014-10-01 1065.648928671770
2014-11-01 1066.482395212990
2014-12-01 949.376224215158
2015-01-01 1021.732094081630
2015-02-01 806.178213406157
2015-03-01 940.195221211454
2015-04-01 1030.577682321580
2015-05-01 948.564984152919
2015-06-01 1165.801607930740
2015-07-01 1137.836149539910
2015-08-01 1023.410272348640
2015-09-01 1003.269053293510
2015-10-01 1192.480354091720
2015-11-01 971.372480815005
2015-12-01 1201.718984642150
2016-01-01 1122.603670269820
2016-02-01 1000.149107511270
2016-03-01 1107.163555606520
2016-04-01 1017.976451313160
2016-05-01 1048.523438066010
2016-06-01 1053.338605121700
2016-07-01 974.050128530421
2016-08-01 1275.536205083220
2016-09-01 1078.222042857380
2016-10-01 939.507228612204
2016-11-01 1117.121479026410
2016-12-01 1299.665849292020
2017-01-01 1057.916512694040
2017-02-01 1241.908602591070
2017-03-01 1294.895950810600
2017-04-01 1082.498004974350
2017-05-01 1337.594412933450
2017-06-01 1185.127927356960
2017-07-01 1141.898687117800
2017-08-01 1287.876250185460
2017-09-01 1389.463562229430
2017-10-01 1148.713359918860
2017-11-01 1289.846843785700
2017-12-01 953.297221438132
2018-01-01 1240.279638204410
2018-02-01 1144.571762437290
2018-03-01 1125.386842097430
2018-04-01 1220.478314851280
2018-05-01 1122.130286882940
2018-06-01 1131.311596237240
2018-07-01 1197.825584697570
2018-08-01 1101.427476950330
2018-09-01 855.332526192051
2018-10-01 1268.326264644260
2018-11-01 1032.885064523360
2018-12-01 1094.220148583450
2019-01-01 1017.452052660330
2019-02-01 1051.567203361460
2019-03-01 1024.577519860600
2019-04-01 1200.451441330700
2019-05-01 1058.017965646890
2019-06-01 1063.330270194310
2019-07-01 1096.185729602160
2019-08-01 1068.410985752710
2019-09-01 963.166118943001
2019-10-01 1000.154705221760
2019-11-01 1050.543731296500
2019-12-01 927.408730780823
2020-01-01 1080.176455382310
2020-02-01 1167.106539447330
2020-03-01 819.032903591829
2020-04-01 862.665075492092
2020-05-01 805.783031110812
2020-06-01 981.134195209010
2020-07-01 1091.606166149150
2020-08-01 1049.406600120490
2020-09-01 1250.626269864340
2020-10-01 1342.696007325800
2020-11-01 1228.232675661500
2020-12-01 1296.224561181490
2021-01-01 1345.014328092110
2021-02-01 1120.024675560960
2021-03-01 1234.213328359420
2021-04-01 1063.586625860220
2021-05-01 1085.237654663600
2021-06-01 1084.382991610680
2021-07-01 963.924029191896
2021-08-01 1024.687814433130
2021-09-01 1073.605239673850
2021-10-01 988.451277108365
2021-11-01 1042.527455483280
2021-12-01 1153.093888165950
2022-01-01 1009.343257598340
2022-02-01 1154.674041225010
2022-03-01 1278.963195473330
2022-04-01 992.659047060782
2022-05-01 1058.279340815790
2022-06-01 979.583888797348
2022-07-01 736.292113986868
2022-08-01 867.998107443380
2022-09-01 871.954698989078
2022-10-01 858.519668626408
2022-11-01 899.340009053988
2022-12-01 748.867105405787
2023-01-01 707.199133584475
2023-02-01 826.068922595921
2023-03-01 855.567780811047
2023-04-01 903.602039540358
2023-05-01 1113.691668360200
2023-06-01 868.275290848487
2023-07-01 663.362685282024
2023-08-01 948.788839635239
2023-09-01 824.422114569143
2023-10-01 847.893450571452
2023-11-01 828.692591508412
2023-12-01 854.324120684834
2024-01-01 1008.018920909440
2024-02-01 1041.675933157090
2024-03-01 1002.140296223100
2024-04-01 1054.302829967840
2024-05-01 909.392300566261
2024-06-01 798.033953673473
2024-07-01 942.170369846870
2024-08-01 914.936291512724
2024-09-01 738.161177570704
2024-10-01 1019.427056759830
2024-11-01 1025.205873890730
2024-12-01 966.254800746983
2025-01-01 1222.334465998450
2025-02-01 888.713439060193
2025-03-01 817.060181488995
2025-04-01 762.989523707711
2025-05-01 868.410663019450
2025-06-01 897.843570555426
2025-07-01 902.073673879953
2025-08-01 775.369471522885
2025-09-01 781.567498678813
2025-10-01 689.698509297621
2025-11-01 651.560913361984
2025-12-01 968.697824040698
2026-01-01 722.220178171571
2026-02-01 758.452569522130
2026-03-01 763.827393162116
2026-04-01 842.979259168849
2026-05-01 851.995446931726
2026-06-01 937.893730235035

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