Table Data - New Private Housing Units Authorized by Building Permits: 1-Unit Structures for Illinois

Title New Private Housing Units Authorized by Building Permits: 1-Unit Structures for Illinois
Series ID ILBP1FHSA
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 8:48 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 2088.309778660630
1988-02-01 2241.233662257600
1988-03-01 2757.426450039660
1988-04-01 2725.029109963440
1988-05-01 2745.906209908230
1988-06-01 2919.840948585000
1988-07-01 2819.941950292630
1988-08-01 2834.121878961420
1988-09-01 2818.391376417000
1988-10-01 2862.875660500850
1988-11-01 2823.271475378570
1988-12-01 3235.999778149900
1989-01-01 2741.314977301880
1989-02-01 2366.441095641110
1989-03-01 2397.732670537770
1989-04-01 2443.489064052570
1989-05-01 2463.196309704710
1989-06-01 2327.613533932540
1989-07-01 2356.957971105770
1989-08-01 2390.170377750350
1989-09-01 2679.208004797970
1989-10-01 2661.665108015030
1989-11-01 2761.245543034120
1989-12-01 2014.364623455550
1990-01-01 3123.620243018590
1990-02-01 2788.534460382640
1990-03-01 2614.850246192460
1990-04-01 2341.132003106160
1990-05-01 2367.668677400970
1990-06-01 2322.609156665160
1990-07-01 2214.818680564370
1990-08-01 2340.119811431830
1990-09-01 2005.184694371930
1990-10-01 1965.374422109670
1990-11-01 1847.083600281140
1990-12-01 1683.103440843370
1991-01-01 1393.323983184550
1991-02-01 1778.625759083960
1991-03-01 1862.351305255870
1991-04-01 2246.539160080810
1991-05-01 2294.875036470390
1991-06-01 2197.471089822760
1991-07-01 2487.382539314680
1991-08-01 2188.212459763250
1991-09-01 2077.091104610420
1991-10-01 2147.375436245540
1991-11-01 2089.657142834450
1991-12-01 1952.405277785800
1992-01-01 2915.586567445860
1992-02-01 2705.808474134660
1992-03-01 2578.006038342280
1992-04-01 2554.222646510190
1992-05-01 2353.635928985970
1992-06-01 2628.020383101310
1992-07-01 2666.604980234040
1992-08-01 2469.394706756900
1992-09-01 2892.334327150150
1992-10-01 2734.482102640600
1992-11-01 2447.367363406550
1992-12-01 2752.800695681280
1993-01-01 2956.400004583760
1993-02-01 2754.880898490960
1993-03-01 2618.827464411230
1993-04-01 2657.401249285540
1993-05-01 2710.429605971930
1993-06-01 2851.993822113450
1993-07-01 2784.835886435910
1993-08-01 2996.035595265170
1993-09-01 2931.595716872210
1993-10-01 3203.102583425510
1993-11-01 3459.743109116890
1993-12-01 3488.599852017890
1994-01-01 3263.036776118850
1994-02-01 2668.795800992830
1994-03-01 3440.768808825060
1994-04-01 3165.084942181650
1994-05-01 3492.511881629600
1994-06-01 3192.065800913940
1994-07-01 3118.014077735440
1994-08-01 3313.639348598130
1994-09-01 3167.464116731020
1994-10-01 3049.024475869150
1994-11-01 3088.297965895410
1994-12-01 2993.954762479770
1995-01-01 2727.286268175860
1995-02-01 2721.417204166330
1995-03-01 3065.568348400170
1995-04-01 2474.254211932100
1995-05-01 2891.638284426020
1995-06-01 3027.172115161200
1995-07-01 2890.657228288800
1995-08-01 3058.248079456440
1995-09-01 3100.801164756410
1995-10-01 3138.819778287340
1995-11-01 3177.002425368790
1995-12-01 2807.091921701050
1996-01-01 3290.709968479280
1996-02-01 3234.277410313610
1996-03-01 2804.846687596770
1996-04-01 3359.609838829970
1996-05-01 3094.620607923550
1996-06-01 2844.645230462220
1996-07-01 3160.481817249200
1996-08-01 3132.387181959510
1996-09-01 2984.224412448840
1996-10-01 3071.974356284020
1996-11-01 2898.532397820830
1996-12-01 2693.371021163470
1997-01-01 2638.502937940610
1997-02-01 2553.721492219040
1997-03-01 2586.727017970040
1997-04-01 2727.407825431990
1997-05-01 2814.744764581600
1997-06-01 2755.905658292260
1997-07-01 2913.267026721020
1997-08-01 2603.681900217880
1997-09-01 2856.765947408270
1997-10-01 2645.726629490460
1997-11-01 2398.535601097000
1997-12-01 2880.306674993920
1998-01-01 2786.488236428570
1998-02-01 3079.554850403110
1998-03-01 2826.606521692440
1998-04-01 3052.014001574380
1998-05-01 2914.875724520710
1998-06-01 3144.506910597610
1998-07-01 2943.876924117890
1998-08-01 2813.236818505650
1998-09-01 2898.660567765410
1998-10-01 2965.965424275510
1998-11-01 2939.200096964310
1998-12-01 3674.406393941970
1999-01-01 2988.228734802560
1999-02-01 3193.288470627740
1999-03-01 3221.415772826090
1999-04-01 3132.277908168530
1999-05-01 3016.709677006430
1999-06-01 3286.756293016360
1999-07-01 3195.639599724360
1999-08-01 3352.704995625020
1999-09-01 3560.470237906990
1999-10-01 3331.385830230330
1999-11-01 3681.627252593520
1999-12-01 3516.343862506850
2000-01-01 3518.291887913150
2000-02-01 3397.248184785320
2000-03-01 3534.824413990150
2000-04-01 3104.938200959630
2000-05-01 3158.365264612060
2000-06-01 2944.333511592910
2000-07-01 3117.911583005910
2000-08-01 3267.752044799960
2000-09-01 3052.237414723510
2000-10-01 2994.768334037470
2000-11-01 3271.365926213680
2000-12-01 2295.706212226040
2001-01-01 3448.531411078570
2001-02-01 3136.035526342210
2001-03-01 3222.154873313900
2001-04-01 3185.443963194370
2001-05-01 3569.145047346490
2001-06-01 3392.540692768040
2001-07-01 3314.931998854880
2001-08-01 3406.869338294370
2001-09-01 2937.347038162370
2001-10-01 3133.146803170410
2001-11-01 3178.574689360410
2001-12-01 3112.547718245950
2002-01-01 3723.547825317780
2002-02-01 3606.836325983510
2002-03-01 3108.693264603170
2002-04-01 3790.522956405850
2002-05-01 3554.299728950260
2002-06-01 3323.061339204430
2002-07-01 3295.769805088550
2002-08-01 3240.544692362050
2002-09-01 3575.247471334890
2002-10-01 3810.649764205150
2002-11-01 3431.422777448900
2002-12-01 3995.202937668480
2003-01-01 3486.697040440130
2003-02-01 3332.100251100260
2003-03-01 3339.193235707890
2003-04-01 3598.125228022590
2003-05-01 3404.344669199440
2003-06-01 3869.230422766570
2003-07-01 3886.997750240130
2003-08-01 3664.042920607300
2003-09-01 3939.789428483080
2003-10-01 4028.772731862890
2003-11-01 3239.788447172840
2003-12-01 3768.428701557060
2004-01-01 4027.449171837190
2004-02-01 3777.050248351350
2004-03-01 4026.234131455630
2004-04-01 3739.098609685160
2004-05-01 3488.514029310780
2004-06-01 3779.550170365820
2004-07-01 3877.918122273360
2004-08-01 4220.455065000530
2004-09-01 3964.187050682590
2004-10-01 3182.762115020440
2004-11-01 3774.983360445150
2004-12-01 4055.095506736250
2005-01-01 3570.217530194820
2005-02-01 4034.656430248800
2005-03-01 3875.200291148200
2005-04-01 3936.573783556540
2005-05-01 3912.656481365140
2005-06-01 4110.131369849210
2005-07-01 4155.264060066070
2005-08-01 4145.559433428610
2005-09-01 4252.803658682550
2005-10-01 3703.645983055970
2005-11-01 4615.598820154460
2005-12-01 4493.652219426200
2006-01-01 4439.199007288290
2006-02-01 4297.093685185160
2006-03-01 3833.524688653180
2006-04-01 3465.946836836140
2006-05-01 3583.979644767780
2006-06-01 3126.501402262200
2006-07-01 2989.388409665320
2006-08-01 3128.685803728260
2006-09-01 2734.500450596690
2006-10-01 2611.356262699500
2006-11-01 2602.171210094300
2006-12-01 2405.061502684630
2007-01-01 2851.899934662120
2007-02-01 2236.738000191340
2007-03-01 2430.547541949580
2007-04-01 2119.833201407400
2007-05-01 2414.856330690030
2007-06-01 2215.968049039730
2007-07-01 2068.015304762590
2007-08-01 1993.723877959290
2007-09-01 1650.549478464740
2007-10-01 1822.151255891700
2007-11-01 1595.046503903280
2007-12-01 1506.041144501710
2008-01-01 1477.069172431320
2008-02-01 1268.467592614260
2008-03-01 999.797646635148
2008-04-01 1310.430875941390
2008-05-01 1160.391946785260
2008-06-01 1063.366170230440
2008-07-01 1102.751361781620
2008-08-01 905.654479004466
2008-09-01 1046.002945728030
2008-10-01 865.518593883541
2008-11-01 767.886632746960
2008-12-01 641.057239552238
2009-01-01 548.040742356376
2009-02-01 916.026973454285
2009-03-01 504.516627827018
2009-04-01 636.441784236629
2009-05-01 618.151205924564
2009-06-01 706.574022017693
2009-07-01 871.632506849813
2009-08-01 673.153693930884
2009-09-01 750.822859892088
2009-10-01 748.090568440685
2009-11-01 763.242720670180
2009-12-01 778.759740218793
2010-01-01 648.174858193760
2010-02-01 827.677388897754
2010-03-01 745.033578286487
2010-04-01 778.269511310542
2010-05-01 658.458554793818
2010-06-01 669.852149880023
2010-07-01 597.870360136936
2010-08-01 575.709291226776
2010-09-01 608.923158911534
2010-10-01 531.166817142827
2010-11-01 762.243038876647
2010-12-01 551.566944795485
2011-01-01 572.642828133381
2011-02-01 584.462079020227
2011-03-01 638.220648607974
2011-04-01 554.884380461482
2011-05-01 582.989726262428
2011-06-01 583.480571000882
2011-07-01 557.221299528449
2011-08-01 634.044518164861
2011-09-01 584.918460436425
2011-10-01 607.763945533851
2011-11-01 637.865148902027
2011-12-01 696.167982715799
2012-01-01 689.919988907534
2012-02-01 660.851467249735
2012-03-01 741.988932162878
2012-04-01 631.499372666787
2012-05-01 770.699510695646
2012-06-01 689.621014857122
2012-07-01 736.766428807089
2012-08-01 836.771858113731
2012-09-01 743.343092650470
2012-10-01 810.509603491964
2012-11-01 774.276178459495
2012-12-01 793.654278469192
2013-01-01 789.642885795170
2013-02-01 776.753278393391
2013-03-01 734.008232647923
2013-04-01 816.920025964843
2013-05-01 810.042491665999
2013-06-01 801.206617432011
2013-07-01 882.626840145041
2013-08-01 856.924636328074
2013-09-01 803.685166708519
2013-10-01 883.092379960827
2013-11-01 969.900778587033
2013-12-01 891.760726266008
2014-01-01 644.448015279018
2014-02-01 814.422145430708
2014-03-01 822.667991067741
2014-04-01 1012.167706287920
2014-05-01 827.483151275869
2014-06-01 822.222116577222
2014-07-01 862.734944763128
2014-08-01 803.927825793387
2014-09-01 866.347342811341
2014-10-01 934.459309910578
2014-11-01 780.345846523625
2014-12-01 1046.339020555130
2015-01-01 764.938637271380
2015-02-01 636.586197243516
2015-03-01 756.299595218313
2015-04-01 894.322745947003
2015-05-01 895.356158063049
2015-06-01 952.033132277935
2015-07-01 969.822628683380
2015-08-01 873.591802727356
2015-09-01 956.256831543212
2015-10-01 826.956533778475
2015-11-01 929.820900159694
2015-12-01 907.053061149045
2016-01-01 975.584129015969
2016-02-01 911.985866701975
2016-03-01 998.753702288574
2016-04-01 893.924457471506
2016-05-01 882.824638619686
2016-06-01 902.930952409636
2016-07-01 790.048194464138
2016-08-01 872.869687690296
2016-09-01 911.896980596739
2016-10-01 918.432758060684
2016-11-01 878.714283776577
2016-12-01 853.302476561286
2017-01-01 873.730846514550
2017-02-01 995.356782409625
2017-03-01 882.634914814814
2017-04-01 823.489049215034
2017-05-01 865.740697942737
2017-06-01 940.770891704749
2017-07-01 924.838117139688
2017-08-01 970.488718855957
2017-09-01 895.434930127684
2017-10-01 765.099306992610
2017-11-01 929.129169920590
2017-12-01 873.461700688855
2018-01-01 765.581070509489
2018-02-01 795.715282643044
2018-03-01 969.355680607993
2018-04-01 871.120561095914
2018-05-01 941.760327458298
2018-06-01 862.332297527563
2018-07-01 805.048092741334
2018-08-01 930.351987708418
2018-09-01 768.092329925710
2018-10-01 920.717047966105
2018-11-01 842.137651089211
2018-12-01 718.915972256126
2019-01-01 889.666400092272
2019-02-01 757.247105020796
2019-03-01 724.412906498072
2019-04-01 860.952322547306
2019-05-01 857.824618365345
2019-06-01 678.369750782406
2019-07-01 798.516086683001
2019-08-01 640.780594160799
2019-09-01 753.626128076444
2019-10-01 764.981350763149
2019-11-01 738.395681015733
2019-12-01 775.687368905434
2020-01-01 884.604539655891
2020-02-01 826.870935579609
2020-03-01 646.327410841767
2020-04-01 621.916071331176
2020-05-01 643.260010005091
2020-06-01 826.690792647517
2020-07-01 927.372276014768
2020-08-01 829.373093970825
2020-09-01 968.157748029026
2020-10-01 858.981514710895
2020-11-01 864.856995658926
2020-12-01 1026.231453720880
2021-01-01 985.056875639607
2021-02-01 941.266986450549
2021-03-01 951.074123797831
2021-04-01 1048.053502064030
2021-05-01 857.983434121157
2021-06-01 881.418933591538
2021-07-01 829.294291559800
2021-08-01 1054.235371656400
2021-09-01 906.266823119252
2021-10-01 718.904532117241
2021-11-01 946.217608308447
2021-12-01 989.708116788408
2022-01-01 864.599774937308
2022-02-01 846.660259559962
2022-03-01 945.997662900968
2022-04-01 875.495328721995
2022-05-01 826.502897557698
2022-06-01 859.058521093067
2022-07-01 696.668151326314
2022-08-01 732.001981831551
2022-09-01 692.961354052852
2022-10-01 690.801956963263
2022-11-01 630.017320166173
2022-12-01 553.644148266225
2023-01-01 617.769739514295
2023-02-01 669.102634689620
2023-03-01 709.978052672838
2023-04-01 651.270858733154
2023-05-01 833.062225487271
2023-06-01 711.612290149965
2023-07-01 737.040730542548
2023-08-01 728.963636984330
2023-09-01 722.248558803908
2023-10-01 733.819021712129
2023-11-01 918.054366306962
2023-12-01 858.888547104743
2024-01-01 807.185768440380
2024-02-01 887.654302868755
2024-03-01 785.107471756586
2024-04-01 848.574927733739
2024-05-01 972.658319988716
2024-06-01 801.689133760726
2024-07-01 852.454159231462
2024-08-01 852.061114625427
2024-09-01 865.671736207782
2024-10-01 901.590947844412
2024-11-01 837.984516316660
2024-12-01 871.133446759041
2025-01-01 1017.751525442060
2025-02-01 856.649794276228
2025-03-01 875.247381751131
2025-04-01 881.962176634626
2025-05-01 891.724122392874
2025-06-01 1037.972358790810
2025-07-01 922.708841274574
2025-08-01 928.790464980978
2025-09-01 908.645196061914
2025-10-01 939.863727491657
2025-11-01 704.994490826290
2025-12-01 945.390672225357
2026-01-01 897.627048798846
2026-02-01 1070.941863259320
2026-03-01 896.856675966188
2026-04-01 911.378116044856
2026-05-01 837.286036973519
2026-06-01 863.186337529245
2026-07-01 926.773649832529

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