You can extend a house in Fulham, but more often than not you will be asking permission first. There are well over a hundred and fifty listed buildings. Nine conservation areas fall in and around it. The ground moves with the seasons. Plenty of neighbours have extended anyway, and they did it through the paperwork.
There are 175 listed buildings in and around Fulham. One is grade I, 19 are grade II* and 155 are grade II. Listing covers the inside of a building as well as the outside, so even small changes to a listed house, from windows to internal walls, need listed building consent from the council on top of any planning permission. For most of Fulham's homes that will never come up. For the 175 that are listed, a new kitchen involves a heritage officer.
Nine conservation areas fall inside the area's wider boundary box, some of them over the river on the Putney side. Inside a conservation area the council takes a closer interest in anything visible from the street, and some changes that would go ahead freely elsewhere need an application. Check the council's conservation area map for the exact address early on, because the boundary can run between neighbouring streets.
Fulham has one scheduled monument, the moated site at Fulham Palace, which is the strictest tier of protection and matters mainly to land right next to it. The most heavily protected structure in Fulham is a ditch dug to hold water, in a place that already has plenty of water.
Hammersmith and Fulham recorded 2,450 planning applications in Fulham between April 2024 and July 2026, 928 of them in the twelve months to July 2026. People here clearly do alter their homes, and in streets this tight, every set of plans has a neighbour reading it.
The British Geological Survey puts Fulham's shrink-swell hazard at class 3, and about 100% of the area reaches that class. Ground like this expands when wet and shrinks when dry, so an extension needs foundations deep enough to cope. A structural engineer should sign off the design before the builder prices it. The ground under Fulham moves more than the planning officers do.
Six listed buildings in the area are on Historic England's Heritage at Risk register. That means they are in poor condition, their repair may qualify for grant support and any work on them will be watched closely. For the owner of an ordinary terrace a few streets away, it changes nothing.
Permitted development lets a house make modest changes without a full planning application. It shrinks inside a conservation area, and a listed building needs consent for most work whatever the scheme. In Fulham that makes a pre-application conversation with the council the sensible first step for anything bigger than a shed.
Your freedom to extend in Fulham is limited. Small jobs can go ahead, but anything ambitious needs consents, a careful engineer and patience with the council.