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 2026-09-01
Last Updated 2026-10-27 8:52 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 1865.850105945600
1988-02-01 2013.347079970160
1988-03-01 2865.633880265770
1988-04-01 2775.223377027730
1988-05-01 2770.841003935080
1988-06-01 2927.139188005690
1988-07-01 2821.721208309890
1988-08-01 2858.446820638370
1988-09-01 2829.492786005340
1988-10-01 2873.506402007020
1988-11-01 2834.732336057010
1988-12-01 3350.980839315750
1989-01-01 2438.933963410250
1989-02-01 2157.841699197790
1989-03-01 2483.780095678020
1989-04-01 2482.890654501480
1989-05-01 2484.189568557310
1989-06-01 2334.075422206030
1989-07-01 2358.975416313940
1989-08-01 2408.030426517930
1989-09-01 2688.839049838970
1989-10-01 2670.783052960900
1989-11-01 2773.250851034780
1989-12-01 2080.212124583910
1990-01-01 2796.985867818640
1990-02-01 2620.115688855200
1990-03-01 2678.022054493320
1990-04-01 2364.951217052840
1990-05-01 2384.862525068180
1990-06-01 2331.533721352440
1990-07-01 2219.102088077810
1990-08-01 2356.912917945680
1990-09-01 2012.821935754870
1990-10-01 1971.898257862770
1990-11-01 1855.653901180020
1990-12-01 1726.512689352640
1991-01-01 1257.984481822310
1991-02-01 1727.288152641170
1991-03-01 1886.514558319990
1991-04-01 2257.708565508310
1991-05-01 2306.995380674140
1991-06-01 2206.572703324280
1991-07-01 2493.550825345940
1991-08-01 2202.803442578500
1991-09-01 2084.766207366690
1991-10-01 2153.404185355720
1991-11-01 2098.925906122410
1991-12-01 1984.602009800300
1992-01-01 2682.315728005230
1992-02-01 2694.919519710330
1992-03-01 2585.636588782960
1992-04-01 2555.063472047470
1992-05-01 2362.622514940720
1992-06-01 2639.341539700230
1992-07-01 2673.987311520870
1992-08-01 2482.761338562000
1992-09-01 2902.352757313990
1992-10-01 2740.145759326440
1992-11-01 2455.452682927250
1992-12-01 2778.651612155040
1993-01-01 2772.082565403990
1993-02-01 2770.255692475220
1993-03-01 2619.944227287050
1993-04-01 2656.786433088180
1993-05-01 2717.429913598560
1993-06-01 2861.926073992750
1993-07-01 2790.502135732810
1993-08-01 3005.276186503630
1993-09-01 2939.241409412400
1993-10-01 3205.801882467890
1993-11-01 3465.601067542870
1993-12-01 3502.285619667610
1994-01-01 3151.105997086080
1994-02-01 2678.924859309430
1994-03-01 3434.261819119910
1994-04-01 3163.988242433800
1994-05-01 3499.354722832050
1994-06-01 3201.163288072370
1994-07-01 3122.962514614860
1994-08-01 3317.412292175580
1994-09-01 3172.685056659370
1994-10-01 3049.470346693500
1994-11-01 3089.562618079100
1994-12-01 2998.583028304780
1995-01-01 2690.130915543190
1995-02-01 2727.845178274570
1995-03-01 3055.376259904190
1995-04-01 2472.972720607410
1995-05-01 2894.561147660700
1995-06-01 3033.188523350620
1995-07-01 2893.784325866600
1995-08-01 3060.280139509280
1995-09-01 3103.509865396280
1995-10-01 3138.828744158670
1995-11-01 3177.307093749880
1995-12-01 2807.588350440610
1996-01-01 3282.222610817800
1996-02-01 3238.529294225050
1996-03-01 2795.122371587100
1996-04-01 3356.738715297620
1996-05-01 3096.742810253740
1996-06-01 2848.607659832140
1996-07-01 3162.518662540630
1996-08-01 3133.864376068770
1996-09-01 2985.109801445800
1996-10-01 3072.260978277370
1996-11-01 2898.641243461530
1996-12-01 2695.654464286340
1997-01-01 2635.310113151270
1997-02-01 2556.118042651600
1997-03-01 2580.678220720390
1997-04-01 2725.324432390470
1997-05-01 2815.780997551430
1997-06-01 2758.677118441510
1997-07-01 2914.339379961820
1997-08-01 2604.542053264160
1997-09-01 2857.491983591370
1997-10-01 2646.139751893070
1997-11-01 2397.793166028290
1997-12-01 2882.228190390600
1998-01-01 2784.343865590610
1998-02-01 3080.061836894290
1998-03-01 2823.071784481430
1998-04-01 3050.638148445220
1998-05-01 2915.472535300540
1998-06-01 3146.573270020700
1998-07-01 2944.875338445050
1998-08-01 2814.455011123330
1998-09-01 2898.676627107060
1998-10-01 2967.127364181240
1998-11-01 2937.338957534280
1998-12-01 3675.527554855560
1999-01-01 2985.377272706850
1999-02-01 3193.487290734080
1999-03-01 3220.321145370300
1999-04-01 3131.156848233430
1999-05-01 3016.125632877500
1999-06-01 3287.183987949620
1999-07-01 3196.089305836290
1999-08-01 3354.030220463030
1999-09-01 3559.416685329300
1999-10-01 3339.258921860980
1999-11-01 3678.704721883280
1999-12-01 3514.213014871170
2000-01-01 3513.656984309490
2000-02-01 3398.059409895800
2000-03-01 3534.520400159410
2000-04-01 3103.428288376830
2000-05-01 3155.795583576980
2000-06-01 2942.144014489880
2000-07-01 3116.647601965900
2000-08-01 3268.057962744260
2000-09-01 3049.723376104960
2000-10-01 3015.486294697960
2000-11-01 3268.162319677230
2000-12-01 2292.523316405900
2001-01-01 3442.893566342010
2001-02-01 3136.486452454910
2001-03-01 3221.290239266940
2001-04-01 3181.871118066510
2001-05-01 3560.485842495440
2001-06-01 3385.814443066310
2001-07-01 3309.050107603850
2001-08-01 3406.646149713790
2001-09-01 2931.103056278800
2001-10-01 3185.150916926460
2001-11-01 3171.527188266750
2001-12-01 3102.886022317880
2002-01-01 3714.961624217090
2002-02-01 3604.876186007700
2002-03-01 3105.913802762790
2002-04-01 3782.807954808630
2002-05-01 3539.231204711720
2002-06-01 3311.606787514210
2002-07-01 3283.787738851670
2002-08-01 3236.798713586720
2002-09-01 3558.164557373090
2002-10-01 3931.780155053410
2002-11-01 3415.319433004350
2002-12-01 3973.894172766360
2003-01-01 3473.225444914860
2003-02-01 3324.956274444260
2003-03-01 3331.783732672970
2003-04-01 3586.960846259860
2003-05-01 3384.835125740860
2003-06-01 3852.405494991010
2003-07-01 3868.451942928410
2003-08-01 3658.502102200080
2003-09-01 3914.432209684030
2003-10-01 4207.824005099000
2003-11-01 3216.540400160520
2003-12-01 3737.873550400590
2004-01-01 4001.998860544680
2004-02-01 3760.423219083160
2004-03-01 4010.231035200830
2004-04-01 3724.236268475310
2004-05-01 3468.835889913810
2004-06-01 3765.012541340290
2004-07-01 3862.053307886660
2004-08-01 4216.108521374990
2004-09-01 3938.443502224740
2004-10-01 3341.877191411540
2004-11-01 3738.211277598820
2004-12-01 4010.148950294550
2005-01-01 3532.043670637350
2005-02-01 3998.505517521560
2005-03-01 3871.814801920890
2005-04-01 3916.300431995880
2005-05-01 3885.139948180820
2005-06-01 4095.842937567920
2005-07-01 4146.473279690690
2005-08-01 4156.343139424060
2005-09-01 4250.840169153980
2005-10-01 3908.710054294340
2005-11-01 4504.262027313810
2005-12-01 4403.813006388430
2006-01-01 4373.586128427800
2006-02-01 4233.400405391020
2006-03-01 3851.887667869290
2006-04-01 3450.032704870630
2006-05-01 3562.518449642800
2006-06-01 3122.444703233780
2006-07-01 2988.637053321540
2006-08-01 3148.752461524400
2006-09-01 2751.402221205800
2006-10-01 2753.611216401870
2006-11-01 2503.033846021440
2006-12-01 2334.585087487960
2007-01-01 2798.940442458520
2007-02-01 2191.422688739010
2007-03-01 2457.797319224730
2007-04-01 2112.836553708650
2007-05-01 2403.812432039580
2007-06-01 2218.571489420800
2007-07-01 2071.870464472590
2007-08-01 2015.499509786530
2007-09-01 1673.538367103430
2007-10-01 1909.512549776620
2007-11-01 1511.643923070650
2007-12-01 1450.416654113490
2008-01-01 1448.228884698390
2008-02-01 1239.567834101130
2008-03-01 1015.550978234460
2008-04-01 1308.897764073180
2008-05-01 1158.906715567170
2008-06-01 1067.788452870110
2008-07-01 1106.264865720950
2008-08-01 917.232093629433
2008-09-01 1063.240798213740
2008-10-01 894.806790044032
2008-11-01 726.219231922678
2008-12-01 617.540580230602
2009-01-01 537.427669256703
2009-02-01 894.864653048921
2009-03-01 513.649525198555
2009-04-01 637.981875892324
2009-05-01 617.583470692270
2009-06-01 709.855775232944
2009-07-01 874.808874089175
2009-08-01 682.033775048023
2009-09-01 763.780433120864
2009-10-01 767.583049108976
2009-11-01 720.882156672727
2009-12-01 751.873394450121
2010-01-01 637.284933576567
2010-02-01 810.283161837972
2010-03-01 756.667879824913
2010-04-01 783.107910481368
2010-05-01 659.129188260932
2010-06-01 673.556954511258
2010-07-01 599.836746841004
2010-08-01 582.027784427594
2010-09-01 617.032623502680
2010-10-01 540.727419279325
2010-11-01 726.574996292792
2010-12-01 538.533600948239
2011-01-01 560.504168932971
2011-02-01 573.325419301046
2011-03-01 644.591939601028
2011-04-01 559.995270026467
2011-05-01 584.177317069767
2011-06-01 586.743166775595
2011-07-01 559.686541559425
2011-08-01 640.144333825575
2011-09-01 591.703157475413
2011-10-01 614.562843812728
2011-11-01 613.290510405317
2011-12-01 689.160226217168
2012-01-01 668.950379465257
2012-02-01 646.568354817358
2012-03-01 742.530174767144
2012-04-01 639.674388931342
2012-05-01 774.921557227948
2012-06-01 694.482600021794
2012-07-01 741.450593960652
2012-08-01 844.057162250640
2012-09-01 750.473834956071
2012-10-01 814.371897944904
2012-11-01 752.091228340654
2012-12-01 794.870638191084
2013-01-01 756.910063404453
2013-02-01 755.815189092920
2013-03-01 729.018634241050
2013-04-01 829.959486399534
2013-05-01 815.520962466463
2013-06-01 807.270709056250
2013-07-01 889.964987596550
2013-08-01 864.804928563536
2013-09-01 812.511406814805
2013-10-01 888.065975595052
2013-11-01 943.617728576077
2013-12-01 895.661361412282
2014-01-01 615.290293908763
2014-02-01 786.242053384753
2014-03-01 812.048825350735
2014-04-01 1029.579993648740
2014-05-01 835.465133740578
2014-06-01 829.797379114259
2014-07-01 870.445390918312
2014-08-01 811.237169229980
2014-09-01 875.154739307663
2014-10-01 941.251654544753
2014-11-01 761.213171456086
2014-12-01 1051.146245569520
2015-01-01 730.980697320773
2015-02-01 613.092186351205
2015-03-01 745.264529825546
2015-04-01 907.608732070558
2015-05-01 904.762907085153
2015-06-01 961.147041610991
2015-07-01 978.385271398856
2015-08-01 880.831197505496
2015-09-01 964.663138635993
2015-10-01 832.825348331511
2015-11-01 911.783187164966
2015-12-01 910.352656307857
2016-01-01 940.640807901369
2016-02-01 879.147179892632
2016-03-01 984.478851763107
2016-04-01 904.615408193026
2016-05-01 892.027191241937
2016-06-01 910.978364289398
2016-07-01 795.909297962061
2016-08-01 878.067572879221
2016-09-01 916.610464307450
2016-10-01 924.577031428688
2016-11-01 867.532925066150
2016-12-01 853.562820888500
2017-01-01 853.898106991464
2017-02-01 967.934041238957
2017-03-01 873.254223106434
2017-04-01 829.989914385095
2017-05-01 872.150115774797
2017-06-01 946.919904812202
2017-07-01 929.666865646245
2017-08-01 974.077977803457
2017-09-01 897.407737012391
2017-10-01 768.651082189772
2017-11-01 924.215108059849
2017-12-01 871.400614160551
2018-01-01 758.292752642112
2018-02-01 780.819272197780
2018-03-01 963.027099735157
2018-04-01 874.480598173299
2018-05-01 945.735519649341
2018-06-01 865.637756567545
2018-07-01 807.376653708896
2018-08-01 932.284637229361
2018-09-01 768.065381473746
2018-10-01 924.901948346883
2018-11-01 840.138699976355
2018-12-01 716.965924411051
2019-01-01 886.853368137052
2019-02-01 750.055644378721
2019-03-01 723.322586434228
2019-04-01 860.960446738924
2019-05-01 858.792231371160
2019-06-01 679.193720843677
2019-07-01 799.424013399977
2019-08-01 641.799012085851
2019-09-01 753.673377565044
2019-10-01 767.644433289925
2019-11-01 737.909214447761
2019-12-01 774.343174442702
2020-01-01 883.578415873990
2020-02-01 822.963428229315
2020-03-01 646.045226454951
2020-04-01 621.960631612651
2020-05-01 642.912823588926
2020-06-01 826.745728592877
2020-07-01 927.486963278766
2020-08-01 830.426685321062
2020-09-01 967.982866143960
2020-10-01 861.177669237752
2020-11-01 865.847933207983
2020-12-01 1024.198581144820
2021-01-01 984.654418704420
2021-02-01 940.318942029727
2021-03-01 951.022679712914
2021-04-01 1048.181252717600
2021-05-01 855.130961037754
2021-06-01 881.199721241003
2021-07-01 829.212519742470
2021-08-01 1055.577518371100
2021-09-01 906.417227444814
2021-10-01 720.081153309906
2021-11-01 949.234565807659
2021-12-01 987.695022002348
2022-01-01 865.550123253551
2022-02-01 846.842428845509
2022-03-01 946.485543139384
2022-04-01 875.693547085607
2022-05-01 821.447826687398
2022-06-01 857.130660814116
2022-07-01 696.595530915276
2022-08-01 733.037660964314
2022-09-01 693.370982786397
2022-10-01 692.460516812727
2022-11-01 633.179249128180
2022-12-01 553.193421978012
2023-01-01 619.559351282865
2023-02-01 669.973875553437
2023-03-01 710.643650237110
2023-04-01 651.076657826440
2023-05-01 825.599975129390
2023-06-01 707.295369859591
2023-07-01 737.054342761771
2023-08-01 727.392418390664
2023-09-01 728.592603778494
2023-10-01 734.354993303057
2023-11-01 924.330092447751
2023-12-01 860.000798101594
2024-01-01 812.467743539900
2024-02-01 889.599898497370
2024-03-01 787.065774869864
2024-04-01 845.957191973918
2024-05-01 962.238144820089
2024-06-01 792.435395011081
2024-07-01 853.219562517589
2024-08-01 846.516145117742
2024-09-01 881.170830883171
2024-10-01 900.313761794553
2024-11-01 845.532835315559
2024-12-01 875.085086432507
2025-01-01 1027.987285954780
2025-02-01 858.877432059304
2025-03-01 879.132113392054
2025-04-01 876.311071526316
2025-05-01 880.939756191733
2025-06-01 1020.895920116050
2025-07-01 924.522502086174
2025-08-01 917.628850237814
2025-09-01 934.293964208988
2025-10-01 935.833250842766
2025-11-01 712.387419502948
2025-12-01 952.518511839864
2026-01-01 909.830446635597
2026-02-01 1073.899561195830
2026-03-01 902.659600299037
2026-04-01 902.187874432474
2026-05-01 827.284219282997
2026-06-01 845.063546463743
2026-07-01 929.635767082466
2026-08-01 844.840777015689
2026-09-01 778.623413598168

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