You can extend most houses in East Bedfont, because most of the place was built too recently for anyone to protect it. Its listed buildings are a small and old-fashioned minority. The conservation rules are strictest around the village green. Neighbours file planning applications all year round. On the post-war semis, the main thing limiting an extension is the size of the garden.
In and around East Bedfont there are 45 listed buildings. None are Grade I, 1 is Grade II* and 44 are Grade II. Listing protects the whole building, inside and out, so even small changes need listed building consent from the council as well as any planning permission, and work done without it is a criminal offence. Forty-five buildings is a short list for an area of this size, and the post-war estates make up most of the housing stock while hardly featuring on it. The Norman church on the green has had its chancel arch since around 1150, and the councils that have controlled planning here since have taken a much lighter interest in the semis built centuries later.
The surrounding area has 5 conservation areas: Bedfont Green, Feltham Town Centre, Hanworth Park, Hounslow Cavalry Barracks and St Dunstan's. Bedfont Green is the one that matters inside Bedfont itself. Inside a conservation area, some work that would otherwise be permitted development needs planning permission, demolition is controlled, and trees are protected. Check the council's map to see whether the house you are looking at falls within the Bedfont Green boundary, because the boundary decides whether a new porch is the homeowner's choice or the council's.
There are also 2 scheduled monuments in the wider area. These carry the strictest protection of all, though they only matter if a property backs onto one or the plans involve digging near one.
Hounslow's planning records show 719 applications in the area between April 2024 and July 2026, 281 of them in the last twelve months. Rear extensions, loft conversions and side additions are the obvious candidates on houses built in the middle of the twentieth century. Neighbours are using their freedom to extend, and the paperwork goes through the council steadily.
Six listed buildings in the area are on Historic England's Heritage at Risk register. These are buildings in poor condition. Repairs to them may qualify for grant funding, and any work on them will be watched closely. For someone buying an ordinary semi nearby, the register mostly shows which old buildings in the area need care, and those are rarely the houses on sale.
In practice, most houses in East Bedfont outside the Bedfont Green conservation area can use permitted development, the standard allowance for modest extensions and loft work without a full planning application. A listed building or a house inside the conservation area will need consents to match, and checking which category a property falls into comes before any builder's quote. Most of the extensions going up in Bedfont are on its post-war houses, and most owners face nothing more than the normal planning rules.
The freedom to extend here is middling overall. It is generous on the estates that make up most of Bedfont and tight around the green, where the medieval church and its neighbours are carefully protected.