Do You Need Planning Permission for a Heat Pump in Ireland?
You do not need planning permission for an air source or ground source heat pump on an Irish house if it is no more than 2.5 sq m in total, at least 50cm from the edge of the wall or roof it is mounted on, doesn't encroach onto a public road, and runs at no more than 43 dB(A) at the nearest neighbouring home. Since 27 July 2026 it can go on the front of the house as well as the side or rear.
Rules have conditions, and the conditions are where projects fail. Answer a few questions about your exact situation and get a plain-English answer with the regulation cited.
Check your project freeThe rules for a heat pump
- 1.Covers air source heat pumps and ground source systems (horizontal and vertical) on or within the curtilage of a house. It doesn't cover apartments or flats: the regulations' definition of "house" excludes them for this class.
- 2.The total area of all heat pumps on the house, including any already installed, must not exceed 2.5 sq m.
- 3.The unit must be at least 50cm from any edge of the wall or roof it is mounted on.
- 4.Noise must not exceed 43 dB(A) in normal operation, or 5 dB(A) above background noise, whichever is greater, measured at the nearest neighbouring inhabited dwelling.
- 5.Ground works for a ground source system can't raise or lower the ground level by more than 1 metre.
- 6.Since 27 July 2026 (S.I. 342 of 2026) the old ban on heat pumps on or forward of the front wall or roof is gone; the only position rule left is that the unit must not encroach onto a public road.
- 7.Exemptions do not apply to protected structures, and an Architectural Conservation Area can restrict front-facing works.
Reference: Class 2(d), Schedule 2, Part 1, Planning and Development Regulations 2001, as substituted by S.I. 342 of 2026
Frequently asked questions
Can I put a heat pump on the front of my house in Ireland?
Yes, since 27 July 2026. S.I. 342 of 2026 replaced the rule that a heat pump could not go on or forward of the front wall or roof with a narrower one: it must not encroach onto a public road. The size, 50cm edge distance and noise limits still apply.
What is the noise limit for a heat pump in Ireland?
43 dB(A) during normal operation, or 5 dB(A) above the background noise level, whichever is greater, measured from the nearest neighbouring inhabited dwelling. A unit that breaks this limit is not exempt and would need planning permission.
Do I need planning permission for a ground source heat pump?
Not usually. A ground source system (horizontal or vertical collector) is exempt on the same terms as an air source unit, provided the ground level isn't altered by more than 1 metre above or below the adjoining ground.
Turns out you need permission?
Start with the pre-submission checklist, estimate costs with the fee calculator, and read the step-by-step application guide. For uncertain cases, a Section 5 Declaration from your council (~€80) gives a formal ruling either way.
Need help with your application?
Tell us about your project and we'll connect you with an architect or planning consultant in your county. Free, no obligation.
Related projects
This page is general guidance on the Planning and Development Regulations 2001 (as amended), not legal advice. Exemptions do not apply to protected structures or in Architectural Conservation Areas, and conditions apply in every case. Confirm with your local authority before starting work.
