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 2026-06-01
Last Updated 2026-07-24 8:47 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 2814.744764581610
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 3052.014001574390
1998-05-01 2914.875724520720
1998-06-01 3144.506910597610
1998-07-01 2943.876924117900
1998-08-01 2813.236818505650
1998-09-01 2898.660567765410
1998-10-01 2965.965424275500
1998-11-01 2939.200096964290
1998-12-01 3674.406393941940
1999-01-01 2988.228734802530
1999-02-01 3193.288470627730
1999-03-01 3221.415772826110
1999-04-01 3132.277908168560
1999-05-01 3016.709677006460
1999-06-01 3286.756293016380
1999-07-01 3195.639599724370
1999-08-01 3352.704995625010
1999-09-01 3560.470237906950
1999-10-01 3331.385830230280
1999-11-01 3681.627252593470
1999-12-01 3516.343862506810
2000-01-01 3518.291887913130
2000-02-01 3397.248184785370
2000-03-01 3534.824413990280
2000-04-01 3104.938200959710
2000-05-01 3158.365264612070
2000-06-01 2944.333511592850
2000-07-01 3117.911583005830
2000-08-01 3267.752044799910
2000-09-01 3052.237414723530
2000-10-01 2994.768334037590
2000-11-01 3271.365926213840
2000-12-01 2295.706212226090
2001-01-01 3448.531411078460
2001-02-01 3136.035526341900
2001-03-01 3222.154873313280
2001-04-01 3185.443963193550
2001-05-01 3569.145047347150
2001-06-01 3392.540692767750
2001-07-01 3314.931998856010
2001-08-01 3406.869338295320
2001-09-01 2937.347038164630
2001-10-01 3133.146803171700
2001-11-01 3178.574689359420
2001-12-01 3112.547718242390
2002-01-01 3723.547825312340
2002-02-01 3606.836325977850
2002-03-01 3108.693264599870
2002-04-01 3790.522956405380
2002-05-01 3554.299728956830
2002-06-01 3323.061339210530
2002-07-01 3295.769805097290
2002-08-01 3240.544692367320
2002-09-01 3575.247471335740
2002-10-01 3810.649764203180
2002-11-01 3431.422777426930
2002-12-01 3995.202937638900
2003-01-01 3486.697040420050
2003-02-01 3332.100251091720
2003-03-01 3339.193235714900
2003-04-01 3598.125228042620
2003-05-01 3404.344669231210
2003-06-01 3869.230422788550
2003-07-01 3886.997750255070
2003-08-01 3664.042920606280
2003-09-01 3939.789428464950
2003-10-01 4028.772731844510
2003-11-01 3239.788447132770
2003-12-01 3768.428701526000
2004-01-01 4027.449171554930
2004-02-01 3777.050248393380
2004-03-01 4026.234131550210
2004-04-01 3739.098609776300
2004-05-01 3488.514029403450
2004-06-01 3779.550170414220
2004-07-01 3877.918122286020
2004-08-01 4220.455064979430
2004-09-01 3964.187050606320
2004-10-01 3182.762114940760
2004-11-01 3774.983360312380
2004-12-01 4055.095506597130
2005-01-01 3570.217529556480
2005-02-01 4034.656430117850
2005-03-01 3875.200292257080
2005-04-01 3936.573783489070
2005-05-01 3912.656481350840
2005-06-01 4110.131369849830
2005-07-01 4155.264060100050
2005-08-01 4145.559433461280
2005-09-01 4252.803658039230
2005-10-01 3703.645983093540
2005-11-01 4615.598820212560
2005-12-01 4493.652219533820
2006-01-01 4439.199005583600
2006-02-01 4297.093685179340
2006-03-01 3833.524690552010
2006-04-01 3465.946836648290
2006-05-01 3583.979644196330
2006-06-01 3126.501401457760
2006-07-01 2989.388408962020
2006-08-01 3128.685803350610
2006-09-01 2734.500450146120
2006-10-01 2611.356264198530
2006-11-01 2602.171212498050
2006-12-01 2405.061505000020
2007-01-01 2851.899934350520
2007-02-01 2236.737999878320
2007-03-01 2430.547541575820
2007-04-01 2119.833198462250
2007-05-01 2414.856327388230
2007-06-01 2215.968046517240
2007-07-01 2068.015303846010
2007-08-01 1993.723878752300
2007-09-01 1650.549479985000
2007-10-01 1822.151260190340
2007-11-01 1595.046509596430
2007-12-01 1506.041149589710
2008-01-01 1477.069174075720
2008-02-01 1268.467592314030
2008-03-01 999.797644293234
2008-04-01 1310.430870114770
2008-05-01 1160.391941114050
2008-06-01 1063.366166132710
2008-07-01 1102.751360555810
2008-08-01 905.654481170634
2008-09-01 1046.002950024280
2008-10-01 865.518599090683
2008-11-01 767.886637791485
2008-12-01 641.057242250812
2009-01-01 548.040743870057
2009-02-01 916.026976684812
2009-03-01 504.516631219834
2009-04-01 636.441762182117
2009-05-01 618.151213848408
2009-06-01 706.574026263210
2009-07-01 871.632506575107
2009-08-01 673.153707039900
2009-09-01 750.822848324136
2009-10-01 748.090550223742
2009-11-01 763.242704508366
2009-12-01 778.759728056982
2010-01-01 648.174859474044
2010-02-01 827.677408438456
2010-03-01 745.033614380339
2010-04-01 778.269507854342
2010-05-01 658.458619819098
2010-06-01 669.852190284575
2010-07-01 597.870362769942
2010-08-01 575.709276976596
2010-09-01 608.923072642938
2010-10-01 531.166703370612
2010-11-01 762.243071541705
2010-12-01 551.566872661511
2011-01-01 572.642816975462
2011-02-01 584.462117297080
2011-03-01 638.220738271887
2011-04-01 554.884563618857
2011-05-01 582.989904514241
2011-06-01 583.480695416718
2011-07-01 557.221334232568
2011-08-01 634.044454547729
2011-09-01 584.918219799180
2011-10-01 607.763165367067
2011-11-01 637.865141144043
2011-12-01 696.167983477896
2012-01-01 689.919957210794
2012-02-01 660.852080151371
2012-03-01 741.989693550817
2012-04-01 631.499784429521
2012-05-01 770.699849288087
2012-06-01 689.621218374305
2012-07-01 736.766556806554
2012-08-01 836.771833968533
2012-09-01 743.342846497283
2012-10-01 810.505775778884
2012-11-01 774.276599507390
2012-12-01 793.654897421299
2013-01-01 789.643457712980
2013-02-01 776.755225652469
2013-03-01 734.010093685891
2013-04-01 816.921015369168
2013-05-01 810.042904058021
2013-06-01 801.206758504020
2013-07-01 882.626975453279
2013-08-01 856.924518306056
2013-09-01 803.684716731030
2013-10-01 883.084795237503
2013-11-01 969.900554147059
2013-12-01 891.760704119522
2014-01-01 644.447675964354
2014-02-01 814.435445752203
2014-03-01 822.671749013150
2014-04-01 1012.170839561300
2014-05-01 827.484935416829
2014-06-01 822.222675584582
2014-07-01 862.732937294498
2014-08-01 803.922714807420
2014-09-01 866.340104805848
2014-10-01 934.447014168084
2014-11-01 780.342909248208
2014-12-01 1046.340993295160
2015-01-01 764.943812984588
2015-02-01 636.612593870161
2015-03-01 756.314529053377
2015-04-01 894.335992827499
2015-05-01 895.363633188921
2015-06-01 952.032356443995
2015-07-01 969.808941731240
2015-08-01 873.565596346760
2015-09-01 956.225861498811
2015-10-01 826.934361387816
2015-11-01 929.814307422893
2015-12-01 907.067711176370
2016-01-01 975.625682013931
2016-02-01 912.069867001655
2016-03-01 998.807305448538
2016-04-01 893.958900396401
2016-05-01 882.840995168105
2016-06-01 902.933303790418
2016-07-01 790.033167341339
2016-08-01 872.772548503131
2016-09-01 911.850481842744
2016-10-01 918.385056707687
2016-11-01 878.660760744861
2016-12-01 853.237557392017
2017-01-01 874.137840013085
2017-02-01 995.548083304879
2017-03-01 882.590146720972
2017-04-01 823.494163143406
2017-05-01 865.896685784516
2017-06-01 940.710968550782
2017-07-01 924.790620477694
2017-08-01 970.313391180083
2017-09-01 895.392632716330
2017-10-01 765.046316518989
2017-11-01 929.012056705935
2017-12-01 873.276597720851
2018-01-01 766.192104646185
2018-02-01 795.913543077727
2018-03-01 969.206201401852
2018-04-01 871.126051074020
2018-05-01 942.108992082262
2018-06-01 862.240052262212
2018-07-01 804.968181030222
2018-08-01 930.104588568546
2018-09-01 767.938160990420
2018-10-01 921.093591324963
2018-11-01 841.764584644051
2018-12-01 718.469682419758
2019-01-01 890.479409894624
2019-02-01 757.375042275552
2019-03-01 724.209684674066
2019-04-01 861.021827491749
2019-05-01 858.412280283125
2019-06-01 678.345713409589
2019-07-01 798.442131703531
2019-08-01 640.605670398647
2019-09-01 753.368839372750
2019-10-01 765.735050745863
2019-11-01 737.927360999166
2019-12-01 774.323697463465
2020-01-01 885.212641702382
2020-02-01 826.749370490270
2020-03-01 645.869230594557
2020-04-01 621.693693961665
2020-05-01 645.563372565004
2020-06-01 826.276431044727
2020-07-01 926.906628321441
2020-08-01 828.939548189806
2020-09-01 967.599097311859
2020-10-01 860.307510693136
2020-11-01 864.090346384578
2020-12-01 1023.422663546220
2021-01-01 985.548839172179
2021-02-01 940.755606120401
2021-03-01 949.804064648181
2021-04-01 1046.906444778600
2021-05-01 864.462924795207
2021-06-01 880.352088484557
2021-07-01 828.421452844806
2021-08-01 1053.461033866920
2021-09-01 905.696600381114
2021-10-01 720.084885075938
2021-11-01 945.415907033919
2021-12-01 986.422427364058
2022-01-01 864.919521978461
2022-02-01 845.901590463922
2022-03-01 944.353281363268
2022-04-01 874.101447466632
2022-05-01 836.285922521028
2022-06-01 854.955953938733
2022-07-01 696.040124408911
2022-08-01 731.752235115389
2022-09-01 692.788258136461
2022-10-01 692.217779484379
2022-11-01 629.613911078399
2022-12-01 552.176220913120
2023-01-01 618.075357709375
2023-02-01 668.296670816258
2023-03-01 708.612542048668
2023-04-01 649.778522424351
2023-05-01 842.899750123726
2023-06-01 704.699600537629
2023-07-01 739.676790380653
2023-08-01 729.025146281051
2023-09-01 722.672790827408
2023-10-01 735.592244587047
2023-11-01 917.982470533468
2023-12-01 857.413045068145
2024-01-01 807.806093350066
2024-02-01 886.484283634623
2024-03-01 783.311839754944
2024-04-01 845.923067125584
2024-05-01 982.434060517760
2024-06-01 789.949537211521
2024-07-01 859.374551607240
2024-08-01 852.580151717087
2024-09-01 867.100308253787
2024-10-01 904.252132933069
2024-11-01 838.341909900547
2024-12-01 871.223143620908
2025-01-01 1019.081416829010
2025-02-01 855.566326671895
2025-03-01 872.939546162320
2025-04-01 878.436814094709
2025-05-01 896.318127003632
2025-06-01 1019.754472028320
2025-07-01 935.055472540261
2025-08-01 929.557585409047
2025-09-01 910.927442927394
2025-10-01 943.050779142616
2025-11-01 705.571229403518
2025-12-01 946.871232581346
2026-01-01 899.094688703029
2026-02-01 1069.772337496780
2026-03-01 894.367985607442
2026-04-01 907.647527995284
2026-05-01 837.845231844946
2026-06-01 846.395076545201

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