Roof repairs on listed buildings and in conservation areas

Check first, because the rules are different. Every listed building is on the National Heritage List for England, searchable by address. Listing covers the whole building, inside and out, not just the front.

Oxford has 18 conservation areas, including Jericho, Osney Town, Iffley, Old Headington, Headington Quarry, Walton Manor and the North Oxford Victorian Suburb. A house can be in a conservation area without being listed, or be both. Outside the city, ask your district council: South Oxfordshire, Vale of White Horse, Cherwell or West Oxfordshire.

Oxford City Council says any work, inside or out, that affects a listed building's special character needs listed building consent. For roofs, that includes repairs that replace important parts of the original fabric, and using different materials: its own example is replacing a slate roof with tiles.

In practice, re-fixing a few slipped slates with matching ones is usually a repair. Stripping and re-covering a whole slope, swapping the tile or slate, changing the mortar, or rebuilding a chimney is where consent often comes in. Doing listed building work without consent is a criminal offence, and the council can make you put it back.

In a conservation area, an unlisted house doesn't need listed building consent. Re-roofing like for like usually needs no planning permission either. Changing what the roof looks like is different, and the council expects new work to match.

Some streets have an Article 4 direction, which removes permitted development rights. Oxford has them in Jericho, Osney Town and Wolvercote Green. The Jericho direction covers changes in roofing material, and other alterations to roofs facing a road or waterway, so these need planning permission there. If your street might be covered, ask the council's heritage team (heritage@oxford.gov.uk) before choosing materials.

The Planning Portal says re-roofing that doesn't materially change how a house looks usually doesn't need planning permission. Flats and maisonettes don't have householder permitted development rights, so check before changing anything.

Building control is a separate test. The Planning Portal says repairs or re-covering normally need no application if less than half the roof, and less than a quarter of the building's whole outer envelope, is affected. Above that, or with a covering 15% or more heavier (concrete tiles in place of slate, say), approval is needed. Listed buildings still need it, but the energy-efficiency rules allow for their character.

If a storm opens up a listed roof, it can be made safe and weathertight straight away. The law allows for urgent work without consent when it's needed for safety or to protect the building, but only the minimum, and you must tell the council in writing, with your reasons, as soon as you reasonably can. A tarpaulin or temporary covering is the usual first step; the permanent repair then follows the normal rules, consent included. I do emergency roof repairs across Oxfordshire. Take photos before anything is touched: they show the council what was there and what was done.

The owner applies for consent, not the roofer, and work can't start until it's granted, so allow time for it before booking anyone. Before you apply, agree the detail with your roofer, because the council will want to know it: which tiles or slates, whether sound old ones are re-used, how the ridge is bedded, and lime mortar where the roof was laid in lime. On old stone and soft brick I use lime for bedding and pointing. My heritage roofing page explains why those details matter on an old roof. Then: