Richmond upon Thames has 87 conservation areas. Together, they cover a large share of Twickenham, St Margarets and the wider borough. That’s what the council’s own guidance says. If your home sits inside one, the roof rules are stricter than usual. It’s worth knowing them before you plan any work.
What changes usually need permission
In a conservation area, permitted development rights are more limited. These are the changes you can normally make without asking for planning permission. Roof work that often needs a full planning application includes:
- Raising the roof ridge, or making the roof bigger overall
- Dormer windows, which need permission in a conservation area even where they’d be permitted development elsewhere
- Changing the roofing material visible from the street, such as switching from natural slate to a different tile
- Any roof change visible from a public road or space, which the council checks against its duty to protect the area’s look
Our guide to slate vs tile roofing for period homes covers why a like-for-like slate swap is often the simplest route for a conservation-area home.
What’s usually still straightforward
Like-for-like repairs usually don’t need planning permission. That covers swapping damaged slates or tiles for matching ones. It also covers fixing flashing or clearing guttering. None of it changes how the roof looks. The council draws a line between keeping up what’s there and changing it. A chimney repair or re-pointing job, for instance, is usually simple. Taking down a whole chimney is different, though. It can need permission if it affects the street view.
Article 4 directions
Some streets carry an extra layer of restriction called an Article 4 direction. This removes permitted development rights that would otherwise apply, even outside a formal conservation area. Richmond upon Thames has a number of these in place.
If you’re not sure whether your home is affected, the council’s planning team can confirm it. Problems found after work has started are much harder to fix. So it’s worth checking first.
Getting it right from the start
Getting this wrong can mean a costly planning application after the fact. It can also mean being asked to undo work you’ve already done. Because of that risk, it’s worth using a roofer who knows conservation-area rules in this exact borough. General roofing skill alone is not enough. Our guide on choosing a trustworthy roofer in South West London has the right questions to ask.
We work often within Richmond upon Thames’s conservation areas. That includes here in St Margarets, Twickenham and Richmond upon Thames. We can advise on what your project needs before you apply for anything.
Related reading
- How Much Does a New Roof Cost in Twickenham & Richmond? (2026 Price Guide)
- Flat Roof Repair vs Replacement: Which Do You Need?
- EPDM Rubber vs GRP Fibreglass vs Felt: The Best Flat Roof Material for London Homes
- How to Tell If Your Roof Needs Replacing: 8 Warning Signs
- What to Do When Your Roof Is Leaking: An Emergency Checklist
- Slate vs Tile Roofing for Period Homes in Richmond upon Thames
- Fascias, Soffits & Guttering: A Homeowner’s Guide to Your Roofline
- Chimney Repairs, Re-Pointing and Removal Explained