Yes, for most houses in Bexleyheath, though the ground under the town has more say than the heritage rules do. Listed buildings are few and far between. Two conservation areas cover small patches. The clay underneath covers the whole town. The council is the easier thing to satisfy here, and the subsoil is the harder one.
Bexleyheath has 19 listed buildings: 4 at Grade I, none at Grade II*, and 15 at Grade II. Listing protects the whole building, inside and out, so even modest changes to a listed home need listed building consent from the council on top of any planning permission. Grade I is the top tier, reserved for buildings of exceptional interest, and four of them is a high count for a suburb. Even so, 19 listed buildings in a town of interwar semis means almost nobody buying an ordinary house here will own one.
There are 2 conservation areas in and around Bexleyheath, Parkhurst and Red House Lane. Inside a conservation area, changes that would normally go ahead without an application, such as some alterations to the front of a house, can need the council's consent, and the council will look harder at how an extension fits the street. If a house you are looking at is near either area, check the council's conservation area map to see which side of the boundary it falls on, because that line decides how much paperwork the house comes with.
One scheduled monument falls within the area, the strictest tier of protection. It matters mainly to anyone whose land is right next to it.
Bexleyheath's neighbours are not shy about building. The council logged 322 planning applications in the area between April 2024 and June 2026, 149 of them in the last twelve months. A town built mostly of three-bedroom semis has spent a long time trying to turn them into four.
The ground is the bigger factor. On the geological survey's shrink-swell scale, every part of Bexleyheath reaches class 3, the band for clay that swells when wet and shrinks when dry. That is a published hazard classification, and what it means in practice is that an extension here will probably need deeper foundations than it would on sand or chalk, designed after a structural engineer has looked at the soil, at any nearby trees and at how the existing house was built. Bexleyheath spent most of its history as open heath, with no planning department to answer to, and the clay under it is now the stricter regulator.
One listed building in the area is on Historic England's Heritage at Risk register. That means its condition is a concern, any repair will be closely watched and may qualify for grant funding, and it is no reason for alarm if you are buying an ordinary house nearby.
For a typical semi outside the two conservation areas, many rear extensions and loft conversions may fall under permitted development, the national rights that allow certain work without a full planning application, subject to size limits and to whatever has already been done to the house. Inside Parkhurst or Red House Lane, or on any listed building, assume you will need the council's consent and budget the time for it.
Bexleyheath gives homeowners middling freedom to build: the planning rules are light on most streets, and the clay underneath decides how much the foundations will cost.