Enhanced deduction for eligible construction expenditure

Completed development

A completed development is a qualifying apartment block, in respect of which:

• planning permission has been granted for at least ten new apartments
• a relevant commencement notice is lodged with the local authority between 8 October 2025 and 31 December 2030
• and
• before the planning permission expires:
  • all necessary works to ensure all apartments are suitable for occupation have been completed
  • and
  • a relevant Certificate of Compliance on Completion is lodged with the relevant local authority.

For further information, please see Tax and Duty Manual Part 04-06-27.

Qualifying apartment block

A qualifying apartment block is a building:

• that is a multi-storey building comprised of ten or more apartments
• that is either:
  • newly constructed
  • or
  • having undergone a material change such that the building is now a multi-storey building comprised of ten or more apartments
• and
• that includes ancillary areas, such as gardens or grounds.

A material change occurs when a building or part of, or a structure or part of, becomes suitable for living following a qualifying refurbishment, where:

• it was not originally constructed for occupation as a dwelling
• or
• it was originally constructed for occupation as a dwelling but was not suitable for use as a dwelling or had been used for other purposes.

Each apartment in the qualifying apartment block must:

• be a separate and self-contained dwelling
• have private sleeping, bathroom, and cooking facilities for the occupant's exclusive use
• and
• share access with other apartments if the apartment is not on the ground floor.

Next: Eligible expenditure