1921 Census of England and Wales, General Report with Appendices, Table 15 : " Buildings. England and Wales, 1921".

Class of
Building.		 In
course
of ere-
ction.		 Completed. Number of Structurally Separate
Dwellings within the Buildings.		 Popul-
ation.		 Total
Rooms.
not
cont-
aining
Dwell-
ings		 cont-
aining
Dwell-
ings		 Total Occu-
pied by
Non-
private
Fami-
lies		 Occu-
pied by
Private
Fami-
lies		 Vacant
I Undivided Private Houses. 90,963 — 7,158,023 7,158,023 27,528 6,940,509 189,986 33,027,240 37,214,029
II Structurally divided Private Houses. — — 18,177 44,194 27 42,290 1,877 158,736 152,989
III Blocks of Flats, Tenements, etc. 358 — 83,937 290,124 210 276,841 13,073 1,103,315 938,515
IV Shops 623 150,828 463,751 463,751 2,249 450,839 10,663 2,066,663 2,516,856
V Others, viz.:—                  
  a Offices, Factories, Ware-
houses, Work-
shops		 879 137,129 18,817 73,771 21,195 49,342 3,234 73,719 262,597
  b Hotels 21 — 5,277         132,501  
  c Institu-
tions		 50 469 11,259         906,622  
  d Places of Worship 69 50,377 560         2,542  
  e Places
of Amu-
sement		 87 3,703 255         930  
  f Unspec-
ified		 1,212 148,084 37,603         414,431