Planning Permission in Tandridge: What Homeowners Actually Need to Know
Extending in Godstone, Oxted or Caterham? How Tandridge District Council handles householder applications, when you don't need permission at all, and how the district's 94% green belt really affects your project.
Around 94% of Tandridge district is green belt — one of the highest proportions in England. Homeowners in Godstone, Oxted, Caterham and the surrounding villages often assume this means planning permission is a lottery. The reality is more workable, if you understand the rules of the game.
First: you may not need permission at all
Permitted development (PD) rights let you carry out many projects without a full planning application, and they apply in the green belt:
- Single-storey rear extensions up to 3m deep (semi/terraced) or 4m (detached) — and up to 6m/8m under the larger-home scheme, subject to a prior approval process where neighbours are consulted.
- Loft conversions adding up to 40m³ (terraced) or 50m³ (semi and detached) of roof volume — see our Surrey loft conversion cost guide.
- Outbuildings covering up to half the garden, within height limits.
PD has important exceptions: listed buildings, Article 4 directions, and homes whose PD rights were removed by a previous planning condition. Conservation areas (parts of Godstone, Bletchingley and Oxted have them) restrict some PD rights — side extensions and exterior cladding, for example — but a compliant single-storey rear extension can still qualify. And PD limits count cumulatively — a previous owner's extension eats into your allowance.
Even when your project is permitted development, get a Lawful Development Certificate from Tandridge District Council. It's not compulsory, but your solicitor will ask for it when you sell.
When you do need permission: how Tandridge decides
For householder applications, the council weighs:
- Proportionality (green belt test). Extensions should not result in a home disproportionately larger than the original dwelling — "original" meaning as first built or as it stood in 1948. This is the test that catches people out, because it counts every extension since then, not just yours.
- Neighbour impact. Overlooking, overshadowing and overbearing effect — standard daylight and privacy considerations.
- Design and materials. In and around conservation areas, matching materials and roof forms carry real weight.
Researching local precedents is genuinely useful: the council's planning register shows what has been approved on your street, and a recent approval two doors down is a strong signal for your own design.
Realistic timelines
- Permitted development with prior approval: 42-day neighbour consultation window.
- Householder application: 8 weeks statutory target from validation; allow 10–12 weeks end to end including drawings and validation.
- With pre-application advice or design revisions: add a month or two — usually worth it for borderline green belt cases.
How we approach it
As a design and build firm led by a qualified building surveyor, we handle the planning strategy and the drawings as one piece of work: assessing your PD headroom first (often the fastest, cheapest route), and where an application is needed, designing to the proportionality test from day one rather than negotiating a refusal later. Our architectural planning service covers drawings, applications and building regulations.
Thinking about extending in Tandridge? Book a free consultation and we'll tell you honestly — before you spend anything on drawings — whether your project needs permission and how likely it is to get it. You can also read our Godstone area guide or our Tandridge extension cost guide.