Rendering and Planning Permission

Usually not. Re-rendering is exempted development when it doesn't change how the house looks so much that it's out of character with the house or its neighbours. A protected structure, an architectural conservation area or a big change of look needs the council's view first.

Where the line is, the rule for external insulation since July 2026, and how to get a definite answer. A plain-English guide, not legal advice.

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4(1)(h)the exemption for works that keep the look
150 mmexternal insulation allowed since July 2026
Section 5the council's written answer
€80the fee for a Section 5 declaration

When rendering needs permission

Job	Planning permission?
Re-rendering in a similar finish and colour	Usually not
Rendering over pebble dash in a plain colour	Usually not, if it fits the house and the street
Changing brick or stone to render, or a striking new material	Maybe: it can change the character
External insulation up to 150 mm (Class 63)	Usually not, since July 2026
A protected structure	Talk to the council first
A house in an architectural conservation area	Only exempt if the area's character isn't affected

Section 4(1)(h) of the Planning and Development Act 2000 exempts works that don't materially affect the outside of a house so as to make it inconsistent with its own character or its neighbours'. Re-rendering a dashed or rendered house in a similar finish is the everyday case.

The councils' own decisions show the line. Cork City Council found external insulation with a rough dash finish on the front and back of a semi exempt, because the houses around it were already dashed or rendered. Cork County Council found that replacing a brick and plaster front with plaster and metal cladding was not, because it would change the house's look.

For a definite answer, ask your council for a Section 5 declaration: a form, site maps and a fee of €80, with a decision in about four weeks. The Act itself is on irishstatutebook.ie.

More on rendering

Every job is priced by the contractor after a look at the walls.

€55–€80per m²Silicone renderThin, through-coloured and water-repellent. Never painted.Silicone render →€50–€75per m²Monocouche renderOne coat with the colour in the mix, scraped to a sandy finish.Monocouche →€60–€90per m²Lime renderBreathable, for old stone and brick walls with no cavity.Lime render →€1,500–€4,000to re-dash a semiRendering over pebble dashCover it, paint it or remove it: which suits your walls.Pebble dash →€8,000SEAI grant, detachedInsulate and renderExternal wall insulation finished in render, with the grant.External insulation →€200–€300a day for a plastererRender repairCracks, hollow patches and stains, and when to re-render instead.Repairs →

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Questions we get asked

Do I need planning permission to render my house?

Do I need planning to render over pebble dash?

Usually not, if the new finish and colour suit the house and the street.

Do I need planning for external wall insulation?

Usually not since July 2026: up to 150 mm on the front, rear or gable is exempt under Class 63, if it doesn't encroach on a public road or change the house's character.

Can an estate's planning conditions matter?

They can. If the estate's permission set the finishes, ask the council before changing them.

How do I get a definite answer?

Ask your council for a Section 5 declaration: €80 and a decision in about four weeks.

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Rendering and Planning Permission

See your house rendered, then get a price