SM6 · Wallington & Beddington
SM6 covers Wallington and Beddington — the Beddington Park and church area among the borough's conservation set pieces. Much of the interwar stock keeps permitted development rights for rear and loft projects, with the borough-wide HMO Article 4 the control most likely to apply.
Location data: postcodes.io · Constraints: planning.data.gov.uk (borough-level) · Open Government Licence
Constraint context · Sutton
Real · planning.data.gov.ukSutton has 15 designated conservation areas and 0 Article 4 areas. A district is too coarse to say which apply to your house — postcode districts span many streets and designations are drawn street by street. Enter a full postcode below for the point-level check, or read the full borough picture on the Sutton planning guide.
Is SM6 in a conservation area?
Partly — and which part matters. A postcode district is never uniformly designated: SM6 contains 5 conservation areas within 1km of its centre, and whether your own property sits inside one decides whether permitted development survives. The centre point of SM6 itself does not fall inside one — but many of its streets will.
| COA00000247 | Nearby |
| COA00000281 | Nearby |
| COA00000289 | Nearby |
| COA00000301 | Nearby |
| COA00000304 | Nearby |
Conservation areas whose official geometry lies within 1km of the centre of SM6. Source: planning.data.gov.uk · Open Government Licence. Proximity to the district centre is not a statement about your own address — run the address check for that.
Does an Article 4 direction apply in SM6?
The national dataset holds no Article 4 geometry within 1km of the centre of SM6. Treat that as unknown, not as “none”. The national dataset is known to omit property-specific directions, so the only safe answer is to verify on the council's own register for Sutton before assuming a permitted-development right still exists.
Every designation in the borough: Sutton planning guide →
Do you need planning permission in SM6?
Three routes exist, and which one you are on is decided by your address, not your postcode district:
| Permitted development — no application. The work stays inside the GPDO limits and no designation removes them. A Lawful Development Certificate is cheap proof for a future buyer. | No permission |
| Prior approval — the larger single-storey rear extension route, with neighbour consultation. Not available on designated land. | 42 days |
| Full householder application — required once a designation removes your permitted-development right, or the scheme exceeds the limits. | 8 weeks |
SM6 contains mapped conservation-area or Article 4 geometry, so a meaningful share of its streets will have lost some permitted-development rights — which pushes those properties onto the full-application route. Whether yours is one of them is an address-level question, not a district-level one.
What does planning permission cost in SM6?
| Householder planning application | £548 (from 1 April 2026) |
| Lawful Development Certificate — proposed works | £274 (half the application fee) |
| Lawful Development Certificate — existing works | £548 (the full application fee) |
| Listed building consent | No fee |
| Resubmission after a refusal | Free once, within 12 months of the decision |
National statutory figures for England — councils do not set them, so they are the same in every borough. Planning fees re-index every 1 April; confirm the current amount on the Planning Portal fee calculator before you apply. These are the council's fees only — drawings, surveys and any specialist reports are separate.
How long does it take?
| Householder application — statutory target | 8 weeks |
| Householder application — in practice | 8–12 weeks |
| Prior approval (larger home extension) | 42 days |
| Lawful Development Certificate | 8 weeks |
| Householder appeal — deadline to lodge | 12 weeks from the decision date |
| Householder appeal — typical decision | Around 18 weeks |
What if it's refused?
A refusal is a decision notice with reasons attached, and those reasons are a roadmap. Most homeowners in Sutton — as anywhere in England — are better served by amending the scheme and using the free resubmission than by appealing: you get one further application on the same site within 12 months without paying again.
| Who can appeal | The applicant only — not neighbours |
| Fee to appeal | None — you bear your own costs |
| Procedure | Written representations for most householder appeals |
| Success rate | Roughly a third — about 36% of householder appeals allowed in 2025/26 |
Appeals go to the Planning Inspectorate, an independent national body. How to read a refusal and choose your route →
Planning permission by project in Sutton
Generous suburban plots in Sutton, Cheam and Carshalton extend under PD; the Sutton Garden Suburb and village conservation areas need a full application.
Rear extension in Sutton →Workable on the Victorian terraces of Sutton and Carshalton; the conservation areas need a full application.
Side return extension in Sutton →Strong on the interwar semis of Sutton, Cheam and Worcester Park under PD; the conservation areas scrutinise dormer design.
Loft conversion in Sutton →Uncommon on the borough's suburban plots; a full application with structural and ground-condition evidence is expected, more so in the conservation areas.
Basement extension in Sutton →Large suburban gardens in Cheam, Carshalton and Worcester Park suit garden rooms under PD; the conservation areas can remove outbuilding rights — check the address.
Garden room in Sutton →Pinpoint your street
More of Sutton
Garden-suburb heritage and leafy suburbs; a borough-wide HMO Article 4 from 2025.
Borough page →Planning Permission Checker provides planning and cost intelligence for early feasibility only. It is not legal, planning, valuation, architectural, structural, or surveying advice. All estimates are indicative and must be verified by qualified professionals before purchase, design, planning submission, or construction.
Cost estimates are indicative only — not a quotation. Final price depends on survey, specification, structure, access, party wall matters, VAT, professional fees, and contractor availability.
Planning outcomes are not guaranteed. Local planning authorities make final decisions.