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 2026-04-01
Last Updated 2026-06-01 11:08 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 3560.470237906980
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 3534.824413990160
2000-04-01 3104.938200959640
2000-05-01 3158.365264612060
2000-06-01 2944.333511592910
2000-07-01 3117.911583005900
2000-08-01 3267.752044799960
2000-09-01 3052.237414723510
2000-10-01 2994.768334037480
2000-11-01 3271.365926213690
2000-12-01 2295.706212226040
2001-01-01 3448.531411078560
2001-02-01 3136.035526342190
2001-03-01 3222.154873313860
2001-04-01 3185.443963194320
2001-05-01 3569.145047346530
2001-06-01 3392.540692768020
2001-07-01 3314.931998854950
2001-08-01 3406.869338294410
2001-09-01 2937.347038162510
2001-10-01 3133.146803170490
2001-11-01 3178.574689360350
2001-12-01 3112.547718245730
2002-01-01 3723.547825317440
2002-02-01 3606.836325983140
2002-03-01 3108.693264602950
2002-04-01 3790.522956405790
2002-05-01 3554.299728950650
2002-06-01 3323.061339204790
2002-07-01 3295.769805089080
2002-08-01 3240.544692362370
2002-09-01 3575.247471335030
2002-10-01 3810.649764205230
2002-11-01 3431.422777447670
2002-12-01 3995.202937666740
2003-01-01 3486.697040438860
2003-02-01 3332.100251099520
2003-03-01 3339.193235707860
2003-04-01 3598.125228023120
2003-05-01 3404.344669200590
2003-06-01 3869.230422767310
2003-07-01 3886.997750241330
2003-08-01 3664.042920608510
2003-09-01 3939.789428484390
2003-10-01 4028.772731864580
2003-11-01 3239.788447171650
2003-12-01 3768.428701554620
2004-01-01 4027.449171815890
2004-02-01 3777.050248349860
2004-03-01 4026.234131456170
2004-04-01 3739.098609687320
2004-05-01 3488.514029314440
2004-06-01 3779.550170368680
2004-07-01 3877.918122275870
2004-08-01 4220.455065002780
2004-09-01 3964.187050683710
2004-10-01 3182.762115021840
2004-11-01 3774.983360443340
2004-12-01 4055.095506730480
2005-01-01 3570.217530151600
2005-02-01 4034.656430233830
2005-03-01 3875.200291196080
2005-04-01 3936.573783548090
2005-05-01 3912.656481356520
2005-06-01 4110.131369844840
2005-07-01 4155.264060066700
2005-08-01 4145.559433431520
2005-09-01 4252.803658656200
2005-10-01 3703.645983080250
2005-11-01 4615.598820196540
2005-12-01 4493.652219472260
2006-01-01 4439.199007063080
2006-02-01 4297.093685228540
2006-03-01 3833.524688605830
2006-04-01 3465.946836881950
2006-05-01 3583.979644816950
2006-06-01 3126.501402328280
2006-07-01 2989.388409733400
2006-08-01 3128.685803769280
2006-09-01 2734.500450537100
2006-10-01 2611.356262610400
2006-11-01 2602.171209934150
2006-12-01 2405.061502525570
2007-01-01 2851.899934559230
2007-02-01 2236.738000221520
2007-03-01 2430.547541982310
2007-04-01 2119.833201664810
2007-05-01 2414.856330933790
2007-06-01 2215.968049149880
2007-07-01 2068.015304640370
2007-08-01 1993.723877535840
2007-09-01 1650.549477805410
2007-10-01 1822.151255128200
2007-11-01 1595.046503881960
2007-12-01 1506.041145896380
2008-01-01 1477.069175419810
2008-02-01 1268.467596055320
2008-03-01 999.797649029030
2008-04-01 1310.430876814250
2008-05-01 1160.391943035970
2008-06-01 1063.366163465360
2008-07-01 1102.751354333590
2008-08-01 905.654474872365
2008-09-01 1046.002946364820
2008-10-01 865.518599579747
2008-11-01 767.886642099096
2008-12-01 641.057251063345
2009-01-01 548.040751428622
2009-02-01 916.026985386514
2009-03-01 504.516631057314
2009-04-01 636.441783819885
2009-05-01 618.151191409804
2009-06-01 706.573999030610
2009-07-01 871.632477211450
2009-08-01 673.153678995806
2009-09-01 750.822861863715
2009-10-01 748.090592976593
2009-11-01 763.242767481714
2009-12-01 778.759811958051
2010-01-01 648.174916774856
2010-02-01 827.677446787627
2010-03-01 745.033604982461
2010-04-01 778.269499253273
2010-05-01 658.458487642148
2010-06-01 669.852057530475
2010-07-01 597.870277481407
2010-08-01 575.709239217539
2010-09-01 608.923144518653
2010-10-01 531.166833855565
2010-11-01 762.243503614901
2010-12-01 551.567018988889
2011-01-01 572.642927766470
2011-02-01 584.462160446708
2011-03-01 638.220718214753
2011-04-01 554.884346725962
2011-05-01 582.989607031611
2011-06-01 583.480386880092
2011-07-01 557.221084844343
2011-08-01 634.044270539920
2011-09-01 584.918206648712
2011-10-01 607.764228158534
2011-11-01 637.865681956148
2011-12-01 696.168408598551
2012-01-01 689.920116246185
2012-02-01 660.851669896006
2012-03-01 741.990136958527
2012-04-01 631.499277275237
2012-05-01 770.699129711540
2012-06-01 689.620430296745
2012-07-01 736.765510754231
2012-08-01 836.770491428906
2012-09-01 743.341421387184
2012-10-01 810.512382666939
2012-11-01 774.276237330184
2012-12-01 793.654872716745
2013-01-01 789.643328807998
2013-02-01 776.754159934535
2013-03-01 734.011054587032
2013-04-01 816.920158951887
2013-05-01 810.041998885356
2013-06-01 801.205408257905
2013-07-01 882.624839809894
2013-08-01 856.921912609461
2013-09-01 803.681760717152
2013-10-01 883.097921540457
2013-11-01 969.899006650755
2013-12-01 891.760095494006
2014-01-01 644.446348765024
2014-02-01 814.440178102089
2014-03-01 822.668521765636
2014-04-01 1012.164100847840
2014-05-01 827.480503542056
2014-06-01 822.219451535548
2014-07-01 862.732193865498
2014-08-01 803.925250482441
2014-09-01 866.344695778458
2014-10-01 934.462996496831
2014-11-01 780.350360661345
2014-12-01 1046.348071831220
2015-01-01 764.942103229117
2015-02-01 636.615983687769
2015-03-01 756.292771436922
2015-04-01 894.305988651479
2015-05-01 895.338140071999
2015-06-01 952.018532929846
2015-07-01 969.814962312847
2015-08-01 873.593217861184
2015-09-01 956.265827452227
2015-10-01 826.971025904814
2015-11-01 929.857079481461
2015-12-01 907.093145480018
2016-01-01 975.620080616664
2016-02-01 912.050151402976
2016-03-01 998.710724260699
2016-04-01 893.850830976893
2016-05-01 882.744703850088
2016-06-01 902.870017096454
2016-07-01 790.012284811760
2016-08-01 873.015394642575
2016-09-01 911.918939340770
2016-10-01 918.461039625115
2016-11-01 878.785132504078
2016-12-01 853.384622283628
2017-01-01 873.822042347494
2017-02-01 995.419319393077
2017-03-01 882.616341532649
2017-04-01 823.472872012198
2017-05-01 865.090939249841
2017-06-01 940.784979690699
2017-07-01 924.878514927614
2017-08-01 970.888026321614
2017-09-01 895.522172423597
2017-10-01 765.171358055485
2017-11-01 929.288838529681
2017-12-01 873.664462623467
2018-01-01 765.785490325515
2018-02-01 795.791704761853
2018-03-01 969.303377109337
2018-04-01 871.009815160791
2018-05-01 940.187649108925
2018-06-01 862.113362097653
2018-07-01 804.863216245888
2018-08-01 931.891988629844
2018-09-01 768.029406270800
2018-10-01 921.115153389471
2018-11-01 842.417028714330
2018-12-01 719.356283251027
2019-01-01 890.242081289693
2019-02-01 757.444950257865
2019-03-01 724.309038973941
2019-04-01 860.499416014811
2019-05-01 855.214209192048
2019-06-01 677.710642887658
2019-07-01 797.955217743090
2019-08-01 642.553647628304
2019-09-01 753.637282386547
2019-10-01 765.923978889089
2019-11-01 739.320300100145
2019-12-01 776.096306159671
2020-01-01 886.263028159865
2020-02-01 828.099014949984
2020-03-01 646.872466718125
2020-04-01 621.944873619755
2020-05-01 636.385196234941
2020-06-01 825.956279284765
2020-07-01 926.794954054280
2020-08-01 832.866108024772
2020-09-01 968.297383273968
2020-10-01 860.685952159062
2020-11-01 869.069123510134
2020-12-01 1026.934844591510
2021-01-01 988.506299320873
2021-02-01 944.561740515376
2021-03-01 953.843485914512
2021-04-01 1050.135841128400
2021-05-01 835.166617671871
2021-06-01 882.011105413353
2021-07-01 829.966619380351
2021-08-01 1059.747658797080
2021-09-01 907.323155662613
2021-10-01 721.152001992885
2021-11-01 954.810831486615
2021-12-01 990.988031819880
2022-01-01 870.155651216162
2022-02-01 851.787950066580
2022-03-01 951.242599931249
2022-04-01 879.420428399321
2022-05-01 787.178776004460
2022-06-01 862.684180501403
2022-07-01 698.469134946354
2022-08-01 736.732235033054
2022-09-01 694.532818446872
2022-10-01 693.628624761595
2022-11-01 638.279128464949
2022-12-01 555.303634693723
2023-01-01 623.690129342925
2023-02-01 674.413901459432
2023-03-01 716.722437494939
2023-04-01 657.434247011056
2023-05-01 773.619961848573
2023-06-01 716.394645499774
2023-07-01 742.907874782449
2023-08-01 733.114062372365
2023-09-01 725.654347451475
2023-10-01 737.717525736811
2023-11-01 931.761684169406
2023-12-01 862.977526925538
2024-01-01 817.800881865221
2024-02-01 896.134916153556
2024-03-01 795.323817254484
2024-04-01 860.183597544442
2024-05-01 886.063793049119
2024-06-01 808.010803666259
2024-07-01 863.571216950517
2024-08-01 856.121857651738
2024-09-01 871.680171033654
2024-10-01 906.788215848561
2024-11-01 851.889194342761
2024-12-01 877.280595364113
2025-01-01 1033.359013015090
2025-02-01 865.302907284190
2025-03-01 889.466062798308
2025-04-01 897.844474783912
2025-05-01 800.470229209896
2025-06-01 1044.959650820040
2025-07-01 940.097195079049
2025-08-01 932.033710171464
2025-09-01 917.100606698067
2025-10-01 945.883060452089
2025-11-01 716.465620639250
2025-12-01 953.902538805739
2026-01-01 912.767746613008
2026-02-01 1081.647674726660
2026-03-01 911.993463244708
2026-04-01 928.239009304653

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