House wrap and planning permission

Figures checked against irishstatutebook.ie (S.I. No. 341 of 2026) and seai.ie on 28 October 2026.

The Class 63 exemption

The Planning and Development (Exempted Development (Act of 2000)) (No. 4) Regulations 2026, S.I. No. 341 of 2026, came into operation on 27 July 2026. They add Class 63 to the list of exempted development for houses:

"The addition of external wall insulation to a house and any necessary works to facilitate its installation."

It comes with three conditions (irishstatutebook.ie):

1. No more than 150 mm thick.The external wall insulation must not exceed 150 millimetres on the front, rear or gable walls.
2. Not onto a public road.The insulation must not encroach on any public road.
3. In keeping.The insulation and related works must not materially affect the external appearance so as to make it inconsistent with the character of the house and its neighbours.

What the conditions mean in practice

• Thickness. Ask the contractor for the build-up: board, adhesive, basecoat and render. If the total is over 150 mm on any front, rear or gable wall, the exemption doesn't cover it.
• Footpath. A house that opens straight onto the footpath is the classic problem. Even 100 mm onto a public footpath can be encroachment. Talk to the council first.
• Appearance. A red-brick terrace wrapped in white render looks very different from its neighbours. A rendered semi-D re-rendered in a similar colour usually doesn't. Brick-effect finishes exist for this reason.

When to check with the council

• The house opens directly onto a footpath or road
• It's a protected structure, or in an Architectural Conservation Area
• The house has brick, stone or detailing the wrap would cover
• The build-up is close to 150 mm
• You're on a terrace or estate where every house looks the same
• You're unsure for any reason

You can ask the planning authority for a Section 5 declaration: a formal answer on whether your works are exempted development. It's the safe route when you're unsure, and it's worth having on file when you sell.

Before Class 63

Before 27 July 2026 there was no specific exemption for external wall insulation, and homeowners relied on the general rules for works that don't materially affect a building's appearance. That left many people unsure. Class 63 makes the position clearer for most houses.

Planning is separate from the grant

SEAI's grant doesn't depend on planning, and planning doesn't depend on the grant. You need to meet the SEAI rules for the money and the planning rules for the work. Building Regulations apply too: if the work alters more than 25% of the home's surface area, the home must reach at least a B2 BER, or have its heating and attic insulation brought up to Building Regulation standard (seai.ie).

Apartments

Class 63 is written for "a house". If you're in an apartment, the whole block is usually wrapped as one job, the management company is involved, and the planning position should be checked for the building.

Questions people ask