Table Data - New Private Housing Units Authorized by Building Permits: 1-Unit Structures for Boston-Cambridge-Newton, MA-NH (MSA)

Title New Private Housing Units Authorized by Building Permits: 1-Unit Structures for Boston-Cambridge-Newton, MA-NH (MSA)
Series ID BOST625BP1FHSA
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 8:52 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
1988-01-01 606.267353214186
1988-02-01 633.154590414575
1988-03-01 904.570834324061
1988-04-01 572.701649357057
1988-05-01 546.543869909719
1988-06-01 502.043815153512
1988-07-01 538.240833284530
1988-08-01 492.971525462495
1988-09-01 503.680756150564
1988-10-01 469.416798372103
1988-11-01 458.453425139981
1988-12-01 526.246004489763
1989-01-01 478.003332249009
1989-02-01 453.547323543093
1989-03-01 441.828336150037
1989-04-01 414.235478224422
1989-05-01 383.677658023338
1989-06-01 399.616402824622
1989-07-01 355.467945664848
1989-08-01 375.716732927580
1989-09-01 404.425242208948
1989-10-01 385.603095280745
1989-11-01 406.595106488438
1989-12-01 362.685295305160
1990-01-01 415.212469806007
1990-02-01 479.451126749628
1990-03-01 342.382927901824
1990-04-01 292.799068939699
1990-05-01 321.496426659385
1990-06-01 315.743987298071
1990-07-01 289.440545834425
1990-08-01 292.867028920227
1990-09-01 249.936931325564
1990-10-01 263.024038689570
1990-11-01 334.321619461851
1990-12-01 273.896000387374
1991-01-01 241.097869243028
1991-02-01 258.128254973558
1991-03-01 299.671372481371
1991-04-01 355.344283443991
1991-05-01 402.637492520286
1991-06-01 366.200327544356
1991-07-01 375.256573376349
1991-08-01 398.573882353845
1991-09-01 378.114611610786
1991-10-01 396.398633494167
1991-11-01 367.639324786455
1991-12-01 346.530784262268
1992-01-01 369.279316202102
1992-02-01 429.722656475440
1992-03-01 486.832923573128
1992-04-01 457.799328014431
1992-05-01 427.820781640685
1992-06-01 447.613930661056
1992-07-01 537.061464660321
1992-08-01 428.188674025937
1992-09-01 495.860608740597
1992-10-01 517.592228271876
1992-11-01 488.166877764479
1992-12-01 591.038069355446
1993-01-01 1049.980161779860
1993-02-01 1023.422456953280
1993-03-01 845.357644402370
1993-04-01 947.530549794000
1993-05-01 985.847988249873
1993-06-01 1029.629626225680
1993-07-01 1069.001366498860
1993-08-01 1113.639046671650
1993-09-01 1160.201291049510
1993-10-01 1178.900346260910
1993-11-01 1223.852918228030
1993-12-01 1136.950688725270
1994-01-01 616.903221033945
1994-02-01 546.087328052013
1994-03-01 574.126386717138
1994-04-01 681.098520649101
1994-05-01 626.258203088537
1994-06-01 647.259737947730
1994-07-01 678.145604628600
1994-08-01 648.041470582763
1994-09-01 665.528783760817
1994-10-01 617.389012383154
1994-11-01 735.202146323689
1994-12-01 747.106910952757
1995-01-01 542.698216783238
1995-02-01 473.760979170355
1995-03-01 580.426086924508
1995-04-01 496.826479876232
1995-05-01 563.921091227640
1995-06-01 560.561228471261
1995-07-01 490.873793977346
1995-08-01 571.719314786549
1995-09-01 553.887137919973
1995-10-01 494.352908453261
1995-11-01 632.413927936956
1995-12-01 513.241125224178
1996-01-01 468.874589591417
1996-02-01 491.009793069595
1996-03-01 566.520614229607
1996-04-01 596.460160914809
1996-05-01 618.769175167780
1996-06-01 552.488550032357
1996-07-01 620.157680359889
1996-08-01 603.083445669170
1996-09-01 562.901101352566
1996-10-01 639.777551415636
1996-11-01 502.703624444812
1996-12-01 581.178740384126
1997-01-01 651.280388178979
1997-02-01 685.604452449137
1997-03-01 586.675857647180
1997-04-01 548.048899251501
1997-05-01 568.491677764637
1997-06-01 602.742433952141
1997-07-01 620.738410880268
1997-08-01 567.035014997054
1997-09-01 577.910643239698
1997-10-01 688.903018325442
1997-11-01 564.031374134196
1997-12-01 613.119571693876
1998-01-01 701.401701071060
1998-02-01 722.430987765694
1998-03-01 639.014654018205
1998-04-01 624.301048859922
1998-05-01 578.737859603491
1998-06-01 605.672503655803
1998-07-01 597.941579583418
1998-08-01 570.046027447258
1998-09-01 668.415282672770
1998-10-01 605.800092541128
1998-11-01 602.232322115587
1998-12-01 692.756087022292
1999-01-01 578.933725598548
1999-02-01 535.801602031308
1999-03-01 591.624354122976
1999-04-01 635.168258383547
1999-05-01 571.230596235430
1999-06-01 573.330066656740
1999-07-01 521.571278591257
1999-08-01 566.106600216101
1999-09-01 528.339081038015
1999-10-01 478.472632352806
1999-11-01 540.780511167128
1999-12-01 581.762231409352
2000-01-01 480.731671245086
2000-02-01 557.238425247871
2000-03-01 575.021359307607
2000-04-01 450.667376849647
2000-05-01 459.532986784850
2000-06-01 494.012535129227
2000-07-01 474.012205734843
2000-08-01 469.879473146028
2000-09-01 471.485441615273
2000-10-01 456.298764733735
2000-11-01 514.443617445063
2000-12-01 490.053679609071
2001-01-01 472.753435620912
2001-02-01 481.414581585168
2001-03-01 388.114889001198
2001-04-01 433.091783218227
2001-05-01 474.753496409327
2001-06-01 442.023091925999
2001-07-01 466.083906453658
2001-08-01 464.109651449708
2001-09-01 410.096268987981
2001-10-01 430.843113157926
2001-11-01 420.057296737332
2001-12-01 415.466780249650
2002-01-01 533.145194662578
2002-02-01 427.336968279817
2002-03-01 442.707092946641
2002-04-01 451.770490240666
2002-05-01 469.507235179125
2002-06-01 399.885332743119
2002-07-01 439.382801839076
2002-08-01 456.165817243835
2002-09-01 440.343742804964
2002-10-01 514.603674547742
2002-11-01 438.516951435878
2002-12-01 396.021010098101
2003-01-01 410.124085639827
2003-02-01 375.797500946305
2003-03-01 363.125822417688
2003-04-01 427.630516197676
2003-05-01 400.804180355079
2003-06-01 432.183451201435
2003-07-01 428.194774491786
2003-08-01 365.010983832782
2003-09-01 459.648937903461
2003-10-01 472.653750458113
2003-11-01 452.236918894732
2003-12-01 487.050362586361
2004-01-01 613.604252159941
2004-02-01 647.385455826497
2004-03-01 678.203572298122
2004-04-01 703.794658073783
2004-05-01 564.256266463446
2004-06-01 680.866429008753
2004-07-01 685.255019617914
2004-08-01 645.763335336500
2004-09-01 637.131731589739
2004-10-01 626.054313542663
2004-11-01 672.389586669107
2004-12-01 692.833102239986
2005-01-01 641.875669752478
2005-02-01 626.650318756593
2005-03-01 660.602468997751
2005-04-01 584.557963565680
2005-05-01 673.178923501483
2005-06-01 643.668794832639
2005-07-01 687.938066338236
2005-08-01 718.494774041691
2005-09-01 821.422928130563
2005-10-01 616.488286853748
2005-11-01 666.819890234794
2005-12-01 649.261087317072
2006-01-01 610.093697863197
2006-02-01 677.996480936348
2006-03-01 653.179417357292
2006-04-01 577.407339601495
2006-05-01 512.369591270744
2006-06-01 563.060168549794
2006-07-01 481.001016727054
2006-08-01 466.108451676525
2006-09-01 480.644205916374
2006-10-01 503.052887427265
2006-11-01 438.061321889535
2006-12-01 445.373928769101
2007-01-01 443.428765715862
2007-02-01 379.229689765344
2007-03-01 374.163033587835
2007-04-01 434.781919578999
2007-05-01 523.975897073736
2007-06-01 397.515154728485
2007-07-01 415.434204390021
2007-08-01 427.144488665595
2007-09-01 362.841628588731
2007-10-01 428.210632444990
2007-11-01 414.450649247131
2007-12-01 514.305145271291
2008-01-01 344.935311865041
2008-02-01 339.325016908414
2008-03-01 254.530294840101
2008-04-01 310.590966475986
2008-05-01 320.794949253770
2008-06-01 264.843775640376
2008-07-01 266.085829367909
2008-08-01 278.301745614869
2008-09-01 306.429951869182
2008-10-01 235.976177246786
2008-11-01 215.960535825955
2008-12-01 197.125736240583
2009-01-01 213.050600989805
2009-02-01 187.931821660249
2009-03-01 223.210248516891
2009-04-01 201.614877777696
2009-05-01 213.941523775141
2009-06-01 257.398900438046
2009-07-01 263.258631587193
2009-08-01 241.544148648382
2009-09-01 278.018682367131
2009-10-01 259.253994388125
2009-11-01 274.067718514757
2009-12-01 342.243354503835
2010-01-01 317.705155565115
2010-02-01 323.154524337778
2010-03-01 304.028886596222
2010-04-01 339.941164783018
2010-05-01 299.763221607901
2010-06-01 334.379735004772
2010-07-01 303.442543853392
2010-08-01 277.181484019874
2010-09-01 316.783335097379
2010-10-01 220.469053078946
2010-11-01 313.976253516502
2010-12-01 356.225086820769
2011-01-01 268.728496977668
2011-02-01 204.080174981517
2011-03-01 273.983696930885
2011-04-01 271.503162294820
2011-05-01 265.072234958057
2011-06-01 265.964676454462
2011-07-01 256.449255427824
2011-08-01 277.540652054182
2011-09-01 259.433534559158
2011-10-01 283.246981275738
2011-11-01 270.677037470679
2011-12-01 268.772403435949
2012-01-01 297.558284708215
2012-02-01 334.735472558642
2012-03-01 356.300348152985
2012-04-01 300.714635289223
2012-05-01 340.650806729478
2012-06-01 284.843566281773
2012-07-01 330.045969131894
2012-08-01 358.827142535208
2012-09-01 329.071764037664
2012-10-01 343.202469701906
2012-11-01 373.106601919993
2012-12-01 367.836537631938
2013-01-01 388.834193777456
2013-02-01 410.491473723521
2013-03-01 369.863474705242
2013-04-01 407.242350694158
2013-05-01 443.248926312574
2013-06-01 406.294171181951
2013-07-01 409.886766681381
2013-08-01 435.692631874205
2013-09-01 416.198613806657
2013-10-01 458.606416896879
2013-11-01 432.418201775894
2013-12-01 407.700568186789
2014-01-01 448.020628058787
2014-02-01 411.554892048964
2014-03-01 386.385736238011
2014-04-01 403.050324854303
2014-05-01 399.510395524143
2014-06-01 377.736959152974
2014-07-01 407.966252762144
2014-08-01 341.397925312124
2014-09-01 469.689695172476
2014-10-01 391.245262316616
2014-11-01 344.581992956015
2014-12-01 424.007140440799
2015-01-01 308.031512239197
2015-02-01 258.788938454709
2015-03-01 314.577120026913
2015-04-01 383.205930280620
2015-05-01 361.486558945900
2015-06-01 409.322635255981
2015-07-01 462.587796848565
2015-08-01 399.760839141406
2015-09-01 439.222104633370
2015-10-01 389.037665096430
2015-11-01 456.588717076858
2015-12-01 451.057780047850
2016-01-01 376.499011325930
2016-02-01 427.168186316553
2016-03-01 490.242520784162
2016-04-01 472.099991757836
2016-05-01 409.771904750796
2016-06-01 472.979767496691
2016-07-01 384.774665223892
2016-08-01 443.179888797772
2016-09-01 429.915289154063
2016-10-01 445.310688292909
2016-11-01 434.922100058264
2016-12-01 438.036789643768
2017-01-01 467.416759420217
2017-02-01 388.309900650736
2017-03-01 451.411174608525
2017-04-01 372.348605022095
2017-05-01 442.994671268947
2017-06-01 413.583772383601
2017-07-01 426.578051672892
2017-08-01 455.783654976598
2017-09-01 439.764057703200
2017-10-01 414.927698445994
2017-11-01 500.696407601259
2017-12-01 436.117782043513
2018-01-01 330.989678051760
2018-02-01 416.448291188924
2018-03-01 434.086711222570
2018-04-01 403.233614525435
2018-05-01 524.325373270152
2018-06-01 397.576006607236
2018-07-01 379.048578787336
2018-08-01 355.731969119425
2018-09-01 375.086203171791
2018-10-01 483.500446082789
2018-11-01 353.864076522994
2018-12-01 350.718391887238
2019-01-01 368.854436996097
2019-02-01 346.384244007918
2019-03-01 301.117055646303
2019-04-01 370.346649874456
2019-05-01 354.797093945332
2019-06-01 330.077628851682
2019-07-01 392.870889876119
2019-08-01 388.297102697265
2019-09-01 369.287590758199
2019-10-01 389.088940161887
2019-11-01 363.031501267168
2019-12-01 318.914308349407
2020-01-01 513.213174627873
2020-02-01 396.598215213189
2020-03-01 375.855373959522
2020-04-01 258.288437148074
2020-05-01 317.056775391427
2020-06-01 362.445457904340
2020-07-01 422.998826755508
2020-08-01 379.247648674033
2020-09-01 411.742982018385
2020-10-01 413.125892749651
2020-11-01 415.172255201906
2020-12-01 426.167180301471
2021-01-01 446.379488955687
2021-02-01 483.131790546574
2021-03-01 455.493552905291
2021-04-01 493.981635556504
2021-05-01 438.438717500975
2021-06-01 433.118275581747
2021-07-01 367.970171119067
2021-08-01 402.867102916108
2021-09-01 383.000526048960
2021-10-01 358.770022300795
2021-11-01 406.259462287503
2021-12-01 424.584721743392
2022-01-01 379.270209906547
2022-02-01 407.711652684436
2022-03-01 411.546280112724
2022-04-01 337.687365943000
2022-05-01 341.161883451099
2022-06-01 298.832998493316
2022-07-01 334.937750317373
2022-08-01 313.285992333876
2022-09-01 398.489838340360
2022-10-01 317.592439936133
2022-11-01 331.843384621263
2022-12-01 328.810929074418
2023-01-01 310.363175250970
2023-02-01 294.302833115257
2023-03-01 302.248429022043
2023-04-01 281.165748319769
2023-05-01 311.640314248021
2023-06-01 347.724506947639
2023-07-01 288.270251943057
2023-08-01 328.541526352763
2023-09-01 261.865942668630
2023-10-01 302.145545758250
2023-11-01 292.675370559398
2023-12-01 292.518951211644
2024-01-01 321.000492342953
2024-02-01 327.916036027257
2024-03-01 304.724643361918
2024-04-01 317.292610125558
2024-05-01 334.890514046822
2024-06-01 328.508534551998
2024-07-01 298.853981154437
2024-08-01 290.027441549233
2024-09-01 283.054334500944
2024-10-01 314.789119203632
2024-11-01 288.306565520173
2024-12-01 285.567518427269
2025-01-01 297.429719708982
2025-02-01 247.190343853717
2025-03-01 283.540600181424
2025-04-01 296.980790237623
2025-05-01 288.671017113536
2025-06-01 218.962958989239
2025-07-01 302.444407760628
2025-08-01 306.255528734588
2025-09-01 316.261694593177
2025-10-01 357.245359727936
2025-11-01 277.666312342831
2025-12-01 280.527732750600
2026-01-01 290.890609786399
2026-02-01 236.730914952417
2026-03-01 291.416980849460
2026-04-01 363.100575986207
2026-05-01 350.655297187750
2026-06-01 433.540986355762
2026-07-01 364.725994573958
2026-08-01 331.151648842816

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