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Free 2026 London Planning Report — New Malden KT3

Loft bedroom under a sloping white ceiling with two roof windows, a double bed with a dark headboard and a white folded-paper pendant light
KT3 · New Malden · Kingston

Planning and building regulation drawings in New Malden (KT3)

New Malden grew up around its station, which opened in 1846, and most of the houses date from the decades afterwards: late-Victorian and Edwardian semi-detached and terraced homes. The Groves is one pocket, with streets named after trees such as Lime Grove and Chestnut Grove, and the repeating rhythm of the semis is its identity. Presburg Road was developed by the London and Suburban Land Company, and its villas were designed in a Queen Anne and Renaissance manner. Westbury Road is part of the same protected group.

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  • Royal Borough of Kingston upon Thames granted 82% of 766 householder applications
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A loft conversion, rear extension or side extension here is measured against a very regular street, where the semi-detached rhythm limits how far frontages and rooflines can change. The houses are semi-detached or terraced, so shared walls come into play, and on Presburg Road original detailing is one of the reasons for designation, so replacement windows, roof tiles and brickwork need as much care as the new floor area.

Two conservation areas apply here, The Groves and Presburg Road. The Groves protects the rhythm of the tree-named streets and Presburg Road the detailing of its villas, and the council looks at how rooflines and frontages change. We work out first whether your address falls inside either one, then choose between a permitted development route and a planning application, and draw with the street in mind from the first sketch.

Planning in New Malden: what to know before you apply

In New Malden, Kingston's conservation controls centre on rooflines, frontages and original detailing. In The Groves and around Presburg Road, roof enlargements, side extensions and rear extensions of more than one storey are not permitted development, so they need a planning application, and visible alterations to the front are scrutinised for materials and detail. Kingston has Article 4 directions elsewhere in the borough, but none is confirmed for householders here and none is published nationally. We therefore read the council's own Article 4 map for the specific address rather than assume either way. Flats have no householder permitted development rights, so a converted house needs its own check.

Applications are decided by Royal Borough of Kingston upon Thames — its planning pages.

Check your route

Does your New Malden project need planning permission?

Route check · New Malden (KT3)

Listed building?
Conservation area?
Likely permitted development — no planning applicationNeeds checking
  • A single-storey rear extension up to 4 m deep on a detached house, or 3 m on any other house, is Class A permitted development subject to the height and materials conditions.
  • An Article 4 direction applies here and may withdraw this freedom — the schedule must be checked before relying on it.
  • One or more constraints are unknown — we check the council's registers as part of the free appraisal.
  • Where permitted development applies, a lawful development certificate proves it for lenders and buyers.

Sources: GPDO 2015, Schedule 2, Part 1 · Planning Portal — common projects · Building Regulations 2010 — when approval is needed

This is a first-pass indication from the national rules, not planning advice for your property. Your council's registers, any Article 4 schedule and the exact dimensions decide it — the free appraisal checks all three before we recommend a route.

Confirm it with a free appraisal

New Malden (KT3) in numbers

What Royal Borough of Kingston upon Thames has decided, and what KT3 is built of — the two facts that shape every job here.

Householder planning decisions — Royal Borough of Kingston upon Thames

New Malden (KT3) applications are decided by Royal Borough of Kingston upon Thames; these are its published householder figures for the last four quarters.

Householder applications decided2025 Q2 to 2026 Q1766
Granted628
Refused138
Grantedof 766 decisions · England 90%82%
Decided within 8 weeksof 664, excluding prior approvals93%

Source: Ministry of Housing, Communities and Local Government (PS2 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Permitted development prior approvals — Royal Borough of Kingston upon Thames

How the larger-home-extension route has fared with Royal Borough of Kingston upon Thames, which decides KT3 notifications.

Larger home extension prior approvals — not required2024 Q2 to 2026 Q194
Prior approval granted9
Prior approval refused102
Grantedof 111 determined8%

Source: Ministry of Housing, Communities and Local Government (PS1 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Planning appeals — Royal Borough of Kingston upon Thames

Refusals in KT3 can be appealed to the Planning Inspectorate; this is Royal Borough of Kingston upon Thames's householder appeal record.

Householder appeals determined2021–2026171
Allowed75
Allowedof 171 · England 36%44%

Source: Planning Inspectorate appeals casework. Open Government Licence v3.0 Extracted 2026-09-22.

Conservation areas and Article 4 directions — Royal Borough of Kingston upon Thames

Register counts for Royal Borough of Kingston upon Thames. A count describes what the council has published, never a rank against another council.

Conservation areas in the register26 dated, 1971–200428
Article 4 directions in the register3
Areas covered by an Article 4 direction114

Source: MHCLG Planning Data Platform. Open Government Licence v3.0 Extracted 2026-09-22.

What KT3 is built of

Residential building form across New Malden (KT3), from 366 classified buildings — the fact that decides party walls, side returns and loft headroom before any policy does.

Attached on more than one side33%
Attached on one side52%
Detached15%
Median building footprint73 m²
Addresses per buildingAbove about 2 means flats and maisonettes dominate1.26
Buildings classified366

Source: Ordnance Survey National Geographic Database (derived statistics). Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Extracted 2026-09-22.

  1. Day 0Measured survey of your New Malden property — or your existing plans if you have them.
  2. About 7 daysDrawings issued for your approval. Free redraws until you are happy.
  3. SubmissionWe validate against Royal Borough of Kingston upon Thames’s checklist and submit on your behalf.
  4. Council: 8-week targetHouseholder applications carry an 8-week statutory target. Royal Borough of Kingston upon Thames decided 93% of 664 recent householder applications inside it.

Source: Ministry of Housing, Communities and Local Government (PS2 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Neighbourhoods

Streets and neighbourhoods in KT3

New Maldenpredominantly late-Victorian and Edwardian
Nearby

Nearby postcode districts

Coombe KT2Worcester Park KT4Kingston KT1Surbiton KT6Chessington KT9
FAQ

New Malden (KT3) — FAQs

Can I convert my loft in The Groves?+
Only if the route is confirmed first. Inside the conservation area a dormer or any roof enlargement needs planning permission, and the council pays close attention to how it sits against neighbouring semis. A conversion that keeps to the existing roof slope, adding only rooflights within the Class C limits, can still be permitted development. We check the boundary and the council's Article 4 map before choosing the design.
Do I need planning permission for a rear extension on Presburg Road?+
Possibly, because the villas here are protected for their original detailing. A single-storey rear extension may still be possible under permitted development, but anything of more than one storey is not, and the materials and joins to the original house will be examined. We confirm the position for your house before any drawing begins.
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