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 2026-08-01
Last Updated 2026-09-24 8:51 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 3104.938200959700
2000-05-01 3158.365264612070
2000-06-01 2944.333511592860
2000-07-01 3117.911583005830
2000-08-01 3267.752044799910
2000-09-01 3052.237414723530
2000-10-01 2994.768334037590
2000-11-01 3271.365926213830
2000-12-01 2295.706212226090
2001-01-01 3448.531411078460
2001-02-01 3136.035526341900
2001-03-01 3222.154873313290
2001-04-01 3185.443963193560
2001-05-01 3569.145047347130
2001-06-01 3392.540692767760
2001-07-01 3314.931998856000
2001-08-01 3406.869338295330
2001-09-01 2937.347038164600
2001-10-01 3133.146803171680
2001-11-01 3178.574689359430
2001-12-01 3112.547718242430
2002-01-01 3723.547825312410
2002-02-01 3606.836325977920
2002-03-01 3108.693264599910
2002-04-01 3790.522956405380
2002-05-01 3554.299728956700
2002-06-01 3323.061339210440
2002-07-01 3295.769805097170
2002-08-01 3240.544692367310
2002-09-01 3575.247471335770
2002-10-01 3810.649764203160
2002-11-01 3431.422777427300
2002-12-01 3995.202937639340
2003-01-01 3486.697040420320
2003-02-01 3332.100251091810
2003-03-01 3339.193235714780
2003-04-01 3598.125228042370
2003-05-01 3404.344669230800
2003-06-01 3869.230422788350
2003-07-01 3886.997750254840
2003-08-01 3664.042920606170
2003-09-01 3939.789428464830
2003-10-01 4028.772731844190
2003-11-01 3239.788447133340
2003-12-01 3768.428701526850
2004-01-01 4027.449171559300
2004-02-01 3777.050248393690
2004-03-01 4026.234131549860
2004-04-01 3739.098609775510
2004-05-01 3488.514029402290
2004-06-01 3779.550170413460
2004-07-01 3877.918122285550
2004-08-01 4220.455064979250
2004-09-01 3964.187050606470
2004-10-01 3182.762114940700
2004-11-01 3774.983360313520
2004-12-01 4055.095506599270
2005-01-01 3570.217529565970
2005-02-01 4034.656430122350
2005-03-01 3875.200292241280
2005-04-01 3936.573783490010
2005-05-01 3912.656481354560
2005-06-01 4110.131369852880
2005-07-01 4155.264060101770
2005-08-01 4145.559433461710
2005-09-01 4252.803658047250
2005-10-01 3703.645983085600
2005-11-01 4615.598820199100
2005-12-01 4493.652219519600
2006-01-01 4439.199005641810
2006-02-01 4297.093685165080
2006-03-01 3833.524690566640
2006-04-01 3465.946836632270
2006-05-01 3583.979644183470
2006-06-01 3126.501401439770
2006-07-01 2989.388408947720
2006-08-01 3128.685803338390
2006-09-01 2734.500450162700
2006-10-01 2611.356264224170
2006-11-01 2602.171212545890
2006-12-01 2405.061505048510
2007-01-01 2851.899934388550
2007-02-01 2236.737999869630
2007-03-01 2430.547541569340
2007-04-01 2119.833198381960
2007-05-01 2414.856327302920
2007-06-01 2215.968046439800
2007-07-01 2068.015303797460
2007-08-01 1993.723878726970
2007-09-01 1650.549480006070
2007-10-01 1822.151260258030
2007-11-01 1595.046509720440
2007-12-01 1506.041149920970
2008-01-01 1477.069174468630
2008-02-01 1268.467592669830
2008-03-01 999.797644490993
2008-04-01 1310.430869984790
2008-05-01 1160.391940487090
2008-06-01 1063.366165211820
2008-07-01 1102.751359632820
2008-08-01 905.654480725776
2008-09-01 1046.002950218860
2008-10-01 865.518599999346
2008-11-01 767.886639192240
2008-12-01 641.057243967974
2009-01-01 548.040745156307
2009-02-01 916.026978344424
2009-03-01 504.516631673176
2009-04-01 636.441760910508
2009-05-01 618.151211968426
2009-06-01 706.574023332357
2009-07-01 871.632502856003
2009-08-01 673.153705573076
2009-09-01 750.822848501360
2009-10-01 748.090553481555
2009-11-01 763.242711216476
2009-12-01 778.759738975922
2010-01-01 648.174868700445
2010-02-01 827.677417747216
2010-03-01 745.033618669752
2010-04-01 778.269502272543
2010-05-01 658.458608908949
2010-06-01 669.852176101804
2010-07-01 597.870350847242
2010-08-01 575.709271511990
2010-09-01 608.923072649190
2010-10-01 531.166708717149
2010-11-01 762.243129877203
2010-12-01 551.566887355493
2011-01-01 572.642834124662
2011-02-01 584.462132512850
2011-03-01 638.220751796047
2011-04-01 554.884550112740
2011-05-01 582.989886566620
2011-06-01 583.480667377948
2011-07-01 557.221302185691
2011-08-01 634.044418834965
2011-09-01 584.918180841910
2011-10-01 607.763211642730
2011-11-01 637.865197908745
2011-12-01 696.168048228640
2012-01-01 689.919983489891
2012-02-01 660.852126796542
2012-03-01 741.989905774232
2012-04-01 631.499768458620
2012-05-01 770.699808122257
2012-06-01 689.621137719995
2012-07-01 736.766407636119
2012-08-01 836.771587308054
2012-09-01 743.342523224467
2012-10-01 810.506267580719
2012-11-01 774.276502308415
2012-12-01 793.654955925975
2013-01-01 789.643548518816
2013-02-01 776.755426225636
2013-03-01 734.010617311605
2013-04-01 816.921087089951
2013-05-01 810.042902504374
2013-06-01 801.206617545879
2013-07-01 882.626645777147
2013-08-01 856.923991037296
2013-09-01 803.684012013012
2013-10-01 883.085753914354
2013-11-01 969.900037155243
2013-12-01 891.760471017995
2014-01-01 644.447335913109
2014-02-01 814.439103450081
2014-03-01 822.671629149178
2014-04-01 1012.170058043740
2014-05-01 827.484502159453
2014-06-01 822.222346570207
2014-07-01 862.732719450832
2014-08-01 803.922631879773
2014-09-01 866.340070140921
2014-10-01 934.446393947689
2014-11-01 780.344061142642
2014-12-01 1046.342945842150
2015-01-01 764.944481495668
2015-02-01 636.618413575240
2015-03-01 756.312414511433
2015-04-01 894.331996095009
2015-05-01 895.359795407901
2015-06-01 952.029811207522
2015-07-01 969.808550118240
2015-08-01 873.567598155280
2015-09-01 956.229513475456
2015-10-01 826.935135055115
2015-11-01 929.821552687099
2015-12-01 907.074690085863
2016-01-01 975.630769536360
2016-02-01 912.081068691827
2016-03-01 998.796669976728
2016-04-01 893.944423768472
2016-05-01 882.826519007843
2016-06-01 902.922621527455
2016-07-01 790.026657454059
2016-08-01 872.810591386179
2016-09-01 911.852713264737
2016-10-01 918.381988491564
2016-11-01 878.672142433290
2016-12-01 853.253364434581
2017-01-01 874.140116710723
2017-02-01 995.558583595733
2017-03-01 882.594031691993
2017-04-01 823.511962736022
2017-05-01 865.751115322247
2017-06-01 940.724281615904
2017-07-01 924.798741231545
2017-08-01 970.403449342947
2017-09-01 895.393220479378
2017-10-01 765.043928268499
2017-11-01 929.041088118850
2017-12-01 873.332673847516
2018-01-01 766.223602927975
2018-02-01 795.938806054981
2018-03-01 969.214454291347
2018-04-01 871.138852791137
2018-05-01 941.752934849446
2018-06-01 862.215058800372
2018-07-01 804.948374961933
2018-08-01 930.406575650048
2018-09-01 767.955323639384
2018-10-01 920.971584459280
2018-11-01 841.888085483639
2018-12-01 718.641311381649
2019-01-01 890.634469299285
2019-02-01 757.455145134588
2019-03-01 724.211886657331
2019-04-01 860.956160737383
2019-05-01 857.796577327067
2019-06-01 678.216180920263
2019-07-01 798.361479162234
2019-08-01 640.947689093134
2019-09-01 753.458959040155
2019-10-01 765.603935191202
2019-11-01 738.226150697868
2019-12-01 774.515470053695
2020-01-01 885.633594270778
2020-02-01 827.138614011681
2020-03-01 646.145024629599
2020-04-01 621.886084572036
2020-05-01 643.374850157303
2020-06-01 826.407815619984
2020-07-01 927.085583869591
2020-08-01 829.721507078912
2020-09-01 967.846362677672
2020-10-01 860.095681039095
2020-11-01 864.961777163486
2020-12-01 1023.509915491090
2021-01-01 986.229837044454
2021-02-01 941.573203144225
2021-03-01 950.789392889234
2021-04-01 1047.958023765390
2021-05-01 858.368333628135
2021-06-01 881.065674545757
2021-07-01 828.994355532571
2021-08-01 1054.668393895110
2021-09-01 905.973241314283
2021-10-01 719.889278096640
2021-11-01 946.801887771375
2021-12-01 986.173436254239
2022-01-01 865.826302044170
2022-02-01 846.990039013419
2022-03-01 945.909700520933
2022-04-01 875.477901437211
2022-05-01 827.175889433420
2022-06-01 858.188759459148
2022-07-01 696.403679167703
2022-08-01 732.251471974760
2022-09-01 692.629200272474
2022-10-01 691.650838391957
2022-11-01 630.619992676172
2022-12-01 551.775941542393
2023-01-01 618.836693086967
2023-02-01 669.476973400056
2023-03-01 710.187334838997
2023-04-01 651.382788041319
2023-05-01 833.775662531804
2023-06-01 710.362741256112
2023-07-01 736.551111916749
2023-08-01 729.193630593918
2023-09-01 721.772228753205
2023-10-01 734.295197782312
2023-11-01 919.172172814142
2023-12-01 856.455116226904
2024-01-01 809.294122881597
2024-02-01 888.765035969692
2024-03-01 785.957636102865
2024-04-01 849.019991844342
2024-05-01 973.382671986254
2024-06-01 799.276852375115
2024-07-01 851.068793982367
2024-08-01 852.564478552719
2024-09-01 864.862603097436
2024-10-01 901.532552361703
2024-11-01 839.162950367438
2024-12-01 870.004212593103
2025-01-01 1021.270227220890
2025-02-01 858.344640215942
2025-03-01 876.853842220038
2025-04-01 882.754856716291
2025-05-01 891.966817475575
2025-06-01 1033.832878334950
2025-07-01 920.142759493514
2025-08-01 929.759889355076
2025-09-01 907.588035452359
2025-10-01 939.200378819840
2025-11-01 705.958809651253
2025-12-01 945.625189731381
2026-01-01 901.533336597841
2026-02-01 1073.817445496690
2026-03-01 899.120442396351
2026-04-01 912.495476429625
2026-05-01 837.101489677708
2026-06-01 858.743092135582
2026-07-01 923.165113500848
2026-08-01 858.846952524349

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