Federal Reserve Economic Data

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 2025-08-01
Last Updated 2025-09-24 8:48 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 1705.8429316549802
1988-02-01 2396.2327294235197
1988-03-01 2455.9610756583397
1988-04-01 2414.1894596317600
1988-05-01 2243.9234874969100
1988-06-01 2248.6657977675100
1988-07-01 2502.8455757956700
1988-08-01 2893.8134982351400
1988-09-01 2624.5655338732900
1988-10-01 2304.3754432206697
1988-11-01 2594.5719101758300
1988-12-01 2597.2407725714997
1989-01-01 2159.5010996011100
1989-02-01 2010.5163523020000
1989-03-01 1666.7016999649697
1989-04-01 2060.9900942929103
1989-05-01 1761.2016321864398
1989-06-01 1829.8180020653501
1989-07-01 1831.5537399788800
1989-08-01 1671.6571167359803
1989-09-01 2103.9098963795900
1989-10-01 1557.8842578534698
1989-11-01 2159.4078208145897
1989-12-01 1624.5463104989200
1990-01-01 1853.4241017783602
1990-02-01 1772.4627642624698
1990-03-01 1585.9778270498700
1990-04-01 1383.3302106412400
1990-05-01 1435.9717938054998
1990-06-01 1369.4275819860400
1990-07-01 1087.8779567918700
1990-08-01 1380.5159178930999
1990-09-01 1085.1323453661998
1990-10-01 1227.2531007315600
1990-11-01 977.5365517042329
1990-12-01 1022.4506771229500
1991-01-01 902.4917509004380
1991-02-01 754.3882380095731
1991-03-01 1194.1404247465000
1991-04-01 1152.1768760996001
1991-05-01 1459.6973926681500
1991-06-01 1298.8423006553598
1991-07-01 1384.8772082776300
1991-08-01 1209.4231789369800
1991-09-01 1259.1144044162100
1991-10-01 1346.1465011121800
1991-11-01 1410.9045176467200
1991-12-01 1419.9253177045300
1992-01-01 1745.1418359188700
1992-02-01 1612.6029113268398
1992-03-01 1725.6039899478500
1992-04-01 1773.7365747134302
1992-05-01 1790.6591428242300
1992-06-01 1674.5247835941000
1992-07-01 1745.1249730746000
1992-08-01 1500.3292791506399
1992-09-01 1806.6251881246300
1992-10-01 1887.2447445386802
1992-11-01 1698.7932937353400
1992-12-01 1927.7474003173300
1993-01-01 2157.8851300558104
1993-02-01 2062.5772480311102
1993-03-01 1968.9313824956400
1993-04-01 2410.7577532660800
1993-05-01 1949.5193268409803
1993-06-01 2085.0157065975800
1993-07-01 2329.3342892832998
1993-08-01 2119.7996100039604
1993-09-01 2197.5335618464396
1993-10-01 2226.3714582974103
1993-11-01 2476.3424470837600
1993-12-01 2238.9346041695200
1994-01-01 2065.7879690771000
1994-02-01 2238.3973870040400
1994-03-01 2168.8122291361396
1994-04-01 2114.4507898966800
1994-05-01 2320.0399119472800
1994-06-01 2482.4908350613000
1994-07-01 2042.2798108783397
1994-08-01 2432.6834677716100
1994-09-01 2432.8246314015900
1994-10-01 1931.4719377346698
1994-11-01 2022.2939758428602
1994-12-01 2201.4832325048800
1995-01-01 1803.2584874827899
1995-02-01 1628.9195986097302
1995-03-01 2349.2888915437000
1995-04-01 1709.0441997898001
1995-05-01 1671.8322782201000
1995-06-01 1729.6692584929501
1995-07-01 1812.6471218458300
1995-08-01 2531.3982897831697
1995-09-01 1793.1743403693301
1995-10-01 2248.0487687188000
1995-11-01 2043.8309698618900
1995-12-01 1766.7424974716600
1996-01-01 1662.4441424977600
1996-02-01 1990.1753909233200
1996-03-01 1930.1000066048998
1996-04-01 1916.4921215467398
1996-05-01 2380.0260515983200
1996-06-01 1858.6326611998397
1996-07-01 1903.7237098071803
1996-08-01 2053.5488968976997
1996-09-01 1865.4327599744300
1996-10-01 1914.1673371842498
1996-11-01 1920.8295796279801
1996-12-01 1662.7609064909900
1997-01-01 2278.6595485736602
1997-02-01 1913.8920225629300
1997-03-01 1757.5213657052302
1997-04-01 1974.8769097781500
1997-05-01 2069.5396604969396
1997-06-01 1853.8963138875301
1997-07-01 1975.0958864512600
1997-08-01 1745.9863314922400
1997-09-01 1991.8912922079100
1997-10-01 1988.5173024250400
1997-11-01 1841.6544866142500
1997-12-01 2095.1770609400896
1998-01-01 2156.1129637505300
1998-02-01 1974.5674989567900
1998-03-01 2196.7245105942397
1998-04-01 2131.1900541294300
1998-05-01 2154.9613692841604
1998-06-01 2365.1309662002600
1998-07-01 2344.6863721814398
1998-08-01 2295.9059384319103
1998-09-01 3262.4699139835800
1998-10-01 2250.1745038155200
1998-11-01 2330.5573678554300
1998-12-01 2570.7845305009000
1999-01-01 2100.4210940868697
1999-02-01 2368.3636974079800
1999-03-01 2439.4774411063000
1999-04-01 2545.2569710937196
1999-05-01 2328.8339913402200
1999-06-01 2277.7614912313500
1999-07-01 2599.0683862172300
1999-08-01 2340.6735429499200
1999-09-01 2269.6984668339396
1999-10-01 2163.7839768402600
1999-11-01 2297.0636478829000
1999-12-01 2314.0546882975400
2000-01-01 2459.5530098730200
2000-02-01 2487.7201673426603
2000-03-01 2917.6001278958100
2000-04-01 2121.9605312412400
2000-05-01 2446.0557174468200
2000-06-01 2501.7586313286100
2000-07-01 2240.9515798754800
2000-08-01 2443.7545147913000
2000-09-01 1910.7752741489103
2000-10-01 2477.7187744052700
2000-11-01 3218.7658407196900
2000-12-01 2626.2882418208100
2001-01-01 2533.6801233998400
2001-02-01 2573.9679705890900
2001-03-01 2381.2390258669698
2001-04-01 2154.3535632250896
2001-05-01 2290.4195338208397
2001-06-01 2346.9068339825500
2001-07-01 2203.0769778441100
2001-08-01 2333.7499889348500
2001-09-01 2223.8605312353600
2001-10-01 2495.7856683785300
2001-11-01 2594.8722278724700
2001-12-01 2026.3715324155103
2002-01-01 2561.5242737005900
2002-02-01 2730.2702987801300
2002-03-01 2106.7015701096398
2002-04-01 2379.8812145020897
2002-05-01 2268.1530540896900
2002-06-01 2298.4835161568803
2002-07-01 2630.9041705569102
2002-08-01 2650.7406717336900
2002-09-01 2711.2330848023200
2002-10-01 2843.7964175094103
2002-11-01 2522.2089128136000
2002-12-01 2308.8518472794800
2003-01-01 2497.6876374335100
2003-02-01 2191.7544995699200
2003-03-01 2488.9173821370400
2003-04-01 2520.9783285372100
2003-05-01 2740.8196746857802
2003-06-01 3163.7933777314197
2003-07-01 2539.9053024311397
2003-08-01 2462.1394794249400
2003-09-01 2509.9961548499200
2003-10-01 2469.2461492526104
2003-11-01 2171.3223406809600
2003-12-01 2623.6417756650200
2004-01-01 2411.0638418028900
2004-02-01 1840.6421240393697
2004-03-01 2353.0215547413600
2004-04-01 2387.7017370221397
2004-05-01 1988.0771547717602
2004-06-01 1885.5717498300198
2004-07-01 2138.2091933875000
2004-08-01 2287.9096182025896
2004-09-01 2947.9000300969897
2004-10-01 2015.0314843208898
2004-11-01 2099.2703044399800
2004-12-01 2478.1520881851698
2005-01-01 1994.4088820557502
2005-02-01 1995.9887839178698
2005-03-01 2300.8582832691100
2005-04-01 2137.2300749624696
2005-05-01 2356.3483649293700
2005-06-01 2572.7748867374000
2005-07-01 1970.0706399390900
2005-08-01 1806.2352316474300
2005-09-01 1884.0298305085603
2005-10-01 1966.9361734183603
2005-11-01 1991.6947970864800
2005-12-01 1668.5695274887100
2006-01-01 1962.8444281657800
2006-02-01 1901.8058222308898
2006-03-01 1662.9904471124100
2006-04-01 1525.7417112532098
2006-05-01 1611.1748529867903
2006-06-01 1474.4596095273700
2006-07-01 1266.5876085780400
2006-08-01 1436.1965693598002
2006-09-01 1439.1385292816901
2006-10-01 1334.2612579393300
2006-11-01 1461.5008019972302
2006-12-01 1223.6338600871500
2007-01-01 1293.0761362539700
2007-02-01 1595.6906127666500
2007-03-01 1417.7924602595600
2007-04-01 1127.5800415473000
2007-05-01 1513.5377248510001
2007-06-01 1268.5271960328098
2007-07-01 1298.7646351745698
2007-08-01 1170.3999522881900
2007-09-01 949.7240551629990
2007-10-01 967.2983868510230
2007-11-01 974.6086582355380
2007-12-01 908.0457759484950
2008-01-01 924.6177713657589
2008-02-01 825.7841141299300
2008-03-01 733.8537725895620
2008-04-01 779.5908377388209
2008-05-01 646.8214096707530
2008-06-01 771.7377154457339
2008-07-01 780.6061826054089
2008-08-01 765.2122711577879
2008-09-01 740.7334291826360
2008-10-01 1161.4067094632100
2008-11-01 609.1612745566510
2008-12-01 678.9855278253690
2009-01-01 611.4105971598740
2009-02-01 658.0968300570610
2009-03-01 672.7597470678160
2009-04-01 741.0045988126650
2009-05-01 608.9155147351720
2009-06-01 763.3954334282230
2009-07-01 839.7455693375481
2009-08-01 675.9367148147180
2009-09-01 861.6217644365720
2009-10-01 874.4251939649190
2009-11-01 798.8949022387801
2009-12-01 930.4724957823120
2010-01-01 824.5137068022780
2010-02-01 535.1411881254170
2010-03-01 912.9264675447500
2010-04-01 911.5106892298751
2010-05-01 743.0029660581930
2010-06-01 727.8514512979830
2010-07-01 721.6477214922979
2010-08-01 801.7682595446120
2010-09-01 789.2971843563970
2010-10-01 624.9696125939120
2010-11-01 792.3620664269190
2010-12-01 655.5732970787940
2011-01-01 749.9516972940810
2011-02-01 745.1242501675040
2011-03-01 755.8239905477380
2011-04-01 687.5907543828590
2011-05-01 812.1090113183010
2011-06-01 781.2327363067881
2011-07-01 793.9197460616051
2011-08-01 849.0966646495240
2011-09-01 786.4910999670599
2011-10-01 818.5547407022200
2011-11-01 740.2593801826621
2011-12-01 933.5894537977620
2012-01-01 893.6883468760440
2012-02-01 1083.6750233719200
2012-03-01 713.2436232425180
2012-04-01 704.6321579348869
2012-05-01 1066.4531953559100
2012-06-01 926.2547587467329
2012-07-01 878.7978450341091
2012-08-01 1018.6076165483599
2012-09-01 970.6844279913110
2012-10-01 967.3516202082160
2012-11-01 1074.8210460149699
2012-12-01 1085.8736517429902
2013-01-01 1102.3156910115301
2013-02-01 1326.2346177763400
2013-03-01 1265.1817894251199
2013-04-01 1330.1348231721001
2013-05-01 1267.7635590512000
2013-06-01 933.4659575132690
2013-07-01 1308.0505941681500
2013-08-01 1061.9346872868598
2013-09-01 1091.1259308030300
2013-10-01 1293.9998144011700
2013-11-01 1190.4986130370098
2013-12-01 1006.2458850565599
2014-01-01 1069.7674921483000
2014-02-01 1069.7696879547400
2014-03-01 1052.6955884547600
2014-04-01 1075.0114833278901
2014-05-01 1153.2425633496900
2014-06-01 1036.4682487173800
2014-07-01 1059.4474376105802
2014-08-01 1152.3747425792400
2014-09-01 1152.1566511178900
2014-10-01 1065.6346011084000
2014-11-01 1066.4699938895099
2014-12-01 949.3150435236760
2015-01-01 1021.7119521445000
2015-02-01 806.1638897784570
2015-03-01 940.2015794545441
2015-04-01 1030.6066556053700
2015-05-01 948.6042765254581
2015-06-01 1165.8631062540700
2015-07-01 1137.9159612394600
2015-08-01 1023.5118867313199
2015-09-01 1002.9900380060100
2015-10-01 1192.5609313762400
2015-11-01 971.3659333152721
2015-12-01 1201.5526120452500
2016-01-01 1122.5214737360400
2016-02-01 1000.0907128369198
2016-03-01 1107.1663103812700
2016-04-01 1018.0471253196000
2016-05-01 1048.6381981642400
2016-06-01 1053.4802092893901
2016-07-01 974.2190746435440
2016-08-01 1275.7837740784100
2016-09-01 1077.6487528932400
2016-10-01 939.6384973916611
2016-11-01 1117.1467470260000
2016-12-01 1299.5027646755700
2017-01-01 1057.0876258881501
2017-02-01 1241.9645503299900
2017-03-01 1295.0707789160800
2017-04-01 1082.6683986400699
2017-05-01 1338.5440622023100
2017-06-01 1185.2722476298402
2017-07-01 1142.0837159679400
2017-08-01 1288.1350311941499
2017-09-01 1388.2615869735300
2017-10-01 1148.7783150508599
2017-11-01 1289.7222182982700
2017-12-01 953.1329973998400
2018-01-01 1238.4578492555900
2018-02-01 1144.8640817520200
2018-03-01 1125.9172691148100
2018-04-01 1220.9858183232500
2018-05-01 1123.7476286198700
2018-06-01 1131.4224503080000
2018-07-01 1197.9080601830000
2018-08-01 1101.5821337264100
2018-09-01 854.4334207939740
2018-10-01 1267.9268200916001
2018-11-01 1032.3413017930400
2018-12-01 1093.3937484978999
2019-01-01 1014.5941861894500
2019-02-01 1050.8833308376100
2019-03-01 1029.8148459136999
2019-04-01 1200.4348989809200
2019-05-01 1059.9236004501900
2019-06-01 1063.3931953686501
2019-07-01 1093.6591753459900
2019-08-01 1068.9148981035400
2019-09-01 962.4441007951320
2019-10-01 1000.0436175575100
2019-11-01 1050.2200607159900
2019-12-01 926.7197757528991
2020-01-01 1072.1268679938000
2020-02-01 1166.2250287503100
2020-03-01 827.3633478741181
2020-04-01 862.6705105517860
2020-05-01 807.6582686609840
2020-06-01 981.7408322484480
2020-07-01 1086.7467194359100
2020-08-01 1050.5888226976600
2020-09-01 1250.4694425535200
2020-10-01 1342.3440567973900
2020-11-01 1227.3227597500400
2020-12-01 1294.1656786226900
2021-01-01 1327.2648356103000
2021-02-01 1118.0085486536900
2021-03-01 1252.2457560787500
2021-04-01 1063.8631764108900
2021-05-01 1089.2453925057598
2021-06-01 1087.8515801452500
2021-07-01 958.7703713254170
2021-08-01 1027.1423417728700
2021-09-01 1074.8290977968800
2021-10-01 987.3186556357750
2021-11-01 1039.9944332186699
2021-12-01 1148.6451518692802
2022-01-01 988.1472754627789
2022-02-01 1150.3310557661500
2022-03-01 1296.2629060534500
2022-04-01 993.8444919291840
2022-05-01 1065.0316242935600
2022-06-01 988.4142590365870
2022-07-01 737.0391531942000
2022-08-01 876.2187807210390
2022-09-01 876.1820082726849
2022-10-01 849.7126190823880
2022-11-01 888.6491555620540
2022-12-01 740.8922370381930
2023-01-01 686.4556004287680
2023-02-01 822.9123448133920
2023-03-01 861.6977437363811
2023-04-01 906.5763581871570
2023-05-01 1124.3210504776500
2023-06-01 890.1072093021030
2023-07-01 669.1035842990900
2023-08-01 965.4389795398210
2023-09-01 831.1205848570680
2023-10-01 829.1432232816750
2023-11-01 807.2125995753850
2023-12-01 842.7763154692709
2024-01-01 968.7834563626080
2024-02-01 1033.1195335282300
2024-03-01 997.9995827535870
2024-04-01 1060.9628894610198
2024-05-01 923.3236528640449
2024-06-01 834.1118892007170
2024-07-01 960.5260602753440
2024-08-01 939.2694680102260
2024-09-01 745.8356281573350
2024-10-01 981.7130104602260
2024-11-01 979.3624308812880
2024-12-01 951.4925209956469
2025-01-01 1169.6221297828700
2025-02-01 877.3881362942160
2025-03-01 802.8731058688920
2025-04-01 769.7881855320600
2025-05-01 886.5862240288409
2025-06-01 957.5922855596240
2025-07-01 925.7588510698320
2025-08-01 799.1520198006380

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