This Act amends the Planning and Development Regulations 2001, as amended, by inserting a new Chapter 3A into Part 4 prescribing matters relating to applications to planning authorities under section 42(1A) of the Planning and Development Act 2000, as amended, for a further extension of the duration of planning permissions for certain developments of 20 houses or more. The Regulations also make consequential amendments to Chapter 3 of Part 4 of the 2001 Regulations.