Planning permission in Windsor and Maidenhead
Most single-storey rear extensions within the national permitted development limits don't need planning permission in Windsor and Maidenhead. The rules are stricter in its 26 conservation areas, where side extensions, two-storey extensions and loft dormers need permission. Check your address to see which rules apply.
Windsor and Maidenhead at a glance
- Conservation areas
- 26
- Article 4 areas
- Not published
- Protected landscapes
- Chilterns
- Planning decisions
- Royal Borough of Windsor and Maidenhead
How many conservation areas are there in Windsor and Maidenhead?
Windsor and Maidenhead has 26 conservation areas. In a conservation area, permitted development rights are reduced: side extensions, two-storey extensions, loft dormers and cladding all need planning permission, and many councils add Article 4 directions on top.
- All Saints, Boyn Hill, Maidenhead
- Altwood Road, Maidenhead
- Beenham's Heath
- Bisham Village
- Bray Village
- Burchetts Green
- Castle Hill, Maidenhead
- Cookham Dean
- Cookham Village
- Datchet
- Furze Platt Triangle
- Holyport
- Hurley Village
- Inner Windsor
- Littlewick Green
- Maidenhead Riverside
- Maidenhead Town Centre
- Mill Lane (Clewer Village)
- Old Windsor
- Pinkneys Green, near Maidenhead
- Shurlock Row
- St Mary's Church and Bury Court, White Waltham
- Sunningdale
- Trinity Place/ Clarence Crescent, Windsor
- Waltham St Lawrence
- Windsor Town Centre
Read more: extensions, loft dormers, garden rooms and solar panels in a conservation area.
Does Windsor and Maidenhead have Article 4 directions?
Windsor and Maidenhead hasn't published any Article 4 boundaries on planning.data.gov.uk. Most councils have at least one Article 4 direction, often in conservation areas, so check the council's website or ask its planning team before relying on permitted development.
What is an Article 4 direction?
Is any of Windsor and Maidenhead in a national park, National Landscape or green belt?
- National Landscape (Areas of Outstanding Natural Beauty) in or bordering Windsor and Maidenhead: Chilterns.
- There is green belt in or bordering Windsor and Maidenhead. Householder permitted development rights apply as normal in the green belt, but if you need planning permission, green belt policy limits how much a home can be enlarged.
National parks and National Landscapes restrict permitted development in similar ways to conservation areas. Read more: extensions, loft dormers and garden rooms.
Listed buildings and protected trees in Windsor and Maidenhead
Listed buildings everywhere in England are recorded by Historic England, and the checker looks for them at every address. Windsor and Maidenhead doesn't publish listed building outlines, so where a listed building is recorded near an address, we ask the homeowner to check whether it's theirs.
Windsor and Maidenhead doesn't publish its tree preservation orders as data. If there are mature trees near your project, ask the council whether any are protected before you start.
What planning data does Windsor and Maidenhead publish?
| Data | Status | Records |
|---|---|---|
| Conservation area boundaries | Published | 26 |
| Article 4 direction boundaries | Not published | 0 |
| Listed building outlines | Not published | 0 |
| Tree preservation order areas | Not published | 0 |
| Protected trees | Not published | 0 |
Planning work on a home in Windsor and Maidenhead? Put a pin on your house and we'll check it against all of this.
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Data from planning.data.gov.uk, published by Royal Borough of Windsor and Maidenhead and national bodies under the Open Government Licence, last updated here on 30 October 2026. Royal Borough of Windsor and Maidenhead website.