Convert a house into flats in Durham County
Do you need planning permission for a conversion into flats in Durham County? Here is what the permitted development rules say, how Durham County Council’s designations change them, and what decides an application, grounded in the official guidance and quoted verbatim.

Do you need planning permission for a conversion into flats in Durham County?
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 Durham County still depends on your exact address and the designations on it.
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.
How Durham County’s designations apply
| Designation in Durham County | Published |
|---|---|
| Conservation areas | 92 |
| Article 4 directions (PD removed) | 0 |
| Listed building outlines | 0 |
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.
What Durham County 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.
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.
Get a planning report for your Durham County address
A Planning Policy report reads the designations on your exact Durham County address, quotes the Durham County Council and national policies that apply to a conversion into flats, and (on Pro) shows decided applications nearby with outcomes.