Sean Armstrong
- Foilsithe: 19 Aibreán 2023
- An t-eolas is déanaí: 4 Feabhra 2025

Sean Armstrong has responsibility at Head of Business Unit level for leading the Climate and Construction Innovation unit within the Housing Policy, Legislation and Governance Division. This unit leads and develops climate action policy within the Department, Energy Performance of Buildings Directive, Parts L, F and C of the Building Regulations and is also responsible for placing Construction Industry Register Ireland (CIRI) on a statutory footing and for registration of construction professionals. The unit also leads on the development of Modern Methods of Construction (MMC) and policy related to reducing residential construction costs.