The Housing, Town Planning, etc. Act 1909 (9 Edw. 7. c. 44) was an Act of the Parliament of the United Kingdom which prevented the building of "back-to-back" houses. The act also meant local authorities must introduce systems of town planning and meant homes had to be built to certain legal standards.
See also
Liberal reforms
New towns movement
Town and country planning in the United Kingdom
Bibliography
Full text
Handbook to the Housing and Town Planning Act, 1909 by W. Thompson. Housing, town planning, etc., act, 1909, a practical + guide, by E.G. Bentley, LL.B., and S. Pointon Taylorwith a foreword by Raymond Unwin, 1911. Housing and Town Planning in Great Britain, including the Housing, Town Planning Act, by http://codesproject.asu.edu/node/90, 191o