Planning Policy
Planning Policy / Planning / Kingston upon Thames / Convert a house into flats

Convert a house into flats in Kingston upon Thames

Do you need planning permission for a conversion into flats in Kingston upon Thames? Here is what the permitted development rules say, how Royal Borough of Kingston upon Thames’s designations change them, and what decides an application, grounded in the official guidance and quoted verbatim.

Terrace of period houses with separate entrances
House to flats: always a full application, decided on local policy
The short answer

Do you need planning permission for a conversion into flats in Kingston upon Thames?

Subdividing one dwelling into two or more is a material change of use: there are no householder permitted development rights for it, so every conversion is a full planning application. Whether a conversion into flats needs permission in Kingston upon Thames still depends on your exact address and the designations on it.

1.0: The permitted development position

The starting point

Subdividing one dwelling into two or more is a material change of use: there are no householder permitted development rights for it, so every conversion is a full planning application.

2.0: What changes it in Kingston upon Thames

How Kingston upon Thames’s designations apply

Designation in Kingston upon ThamesPublished
Conservation areas28
Article 4 directions (PD removed)114
Listed building outlines231

Quality decides it: room sizes against space standards, layouts, light and outlook, and amenity space. The principle of conversion is usually supported; poor internal quality is where schemes fail. Counts are read live from planning.data.gov.uk; your report checks them against your exact address.

3.0: How it’s decided

What Kingston upon Thames weighs

Quality decides it: room sizes against space standards, layouts, light and outlook, and amenity space. The principle of conversion is usually supported; poor internal quality is where schemes fail.

As a London borough, Royal Borough of Kingston upon Thames also decides against the London Plan 2021 (the strategic policy layer for all 33 boroughs), alongside national policy and its own Local Plan.

Read the full convert a house into flats guide →

4.0: A worked example

See a conversion into flats in a real report

A change of use inside the Maritime Greenwich World Heritage Site: housing policy and heritage weighed together, 78% of 267 nearby decisions approved.

Read the house into two flats in greenwich case study →

Your report

Get a planning report for your Kingston upon Thames address

A Planning Policy report reads the designations on your exact Kingston upon Thames address, quotes the Royal Borough of Kingston upon Thames and national policies that apply to a conversion into flats, and (on Pro) shows decided applications nearby with outcomes.

5.0: Questions

Convert a house into flats in Kingston upon Thames, answered

Do I need planning permission for a conversion into flats in Kingston upon Thames?
Subdividing one dwelling into two or more is a material change of use: there are no householder permitted development rights for it, so every conversion is a full planning application. Whether a conversion into flats needs permission in Kingston upon Thames still depends on your exact address and the designations on it.
Does a conservation area affect a conversion into flats in Kingston upon Thames?
It can. Even where the size limits are met, Royal Borough of Kingston upon Thames assesses the appearance of a conversion into flats against the character of a conservation area, and on a listed building separate consent is required.
How does Kingston upon Thames decide a convert a house into flats application?
Quality decides it: room sizes against space standards, layouts, light and outlook, and amenity space. The principle of conversion is usually supported; poor internal quality is where schemes fail. A Planning Policy report quotes the specific Royal Borough of Kingston upon Thames Local Plan and national policies that apply, verbatim, and shows decided applications nearby.
6.0: More for Kingston upon Thames

Other projects in Kingston upon Thames