Yes, but in much of Bow the council gets a say first. Hundreds of listed buildings are scattered through the district. Dozens of conservation areas cover the streets between them. The clay underneath shifts as it wets and dries. Getting permission for a rear extension in Bow is slow, and building one needs proper foundations.
There are 233 listed buildings in and around Bow: two at Grade I, 15 at Grade II* and 216 at Grade II. Listing covers the inside of a building as well as the outside, so changing a listed home means applying for listed building consent on top of any planning permission. Carrying out work without that consent is a criminal offence, which is not true of ordinary planning breaches. The 216 at Grade II are mostly ordinary houses and terraces, and those are the ones a buyer here is most likely to end up owning.
On top of that, 33 conservation areas fall within the same patch, from Driffield Road and Carlton Square to Tredegar Square and Albert Gardens. Inside one, demolition needs consent. The council judges changes to the front of a house, the roofline and the materials against the character of the street, and some building work that would be automatic elsewhere needs a planning application here. In Bow the grandest houses are mostly on squares, and the squares are mostly conservation areas.
Bow has two scheduled monuments, the strictest form of protection, and they matter only if your plot borders one.
Plenty of people still try. Tower Hamlets received 978 planning applications for the area between March 2024 and June 2026, 476 of them in the last twelve months. The council's planning register shows every one of them, including what was asked for on your street and what the officers said about it. Spending an evening on it is cheaper than paying an architect to draw something the street has already had turned down.
The ground adds its own condition. The British Geological Survey rates shrink-swell clay at class 3 here, and the whole of Bow reaches that class. Clay at that level swells when wet and shrinks in dry spells, and it moves more near thirsty trees. An extension on it needs deeper foundations than a builder might quote off the cuff, and a structural engineer should see the plans first. That's an engineering job, not a reason to walk away.
Fifteen listed buildings in the area are on Historic England's Heritage at Risk register. That means they are in poor condition, and their repair may qualify for grants but will be watched closely. For anyone buying an ordinary house down the road, it's a fact about the neighbourhood and no threat to the purchase.
In practice, how much freedom you have depends on what you buy. Bow is mostly flats, and flats don't come with the permitted development rights that let a house add a modest rear extension without an application. A house outside a conservation area keeps those rights, while a house inside one has fewer, and a listed house needs consent for almost everything. The plan for the back of a terrace has to fit what the council expects for that row.
Freedom to alter your home is poor in Bow. Most changes involve an application and a wait, and at least one conversation about bricks. A buyer who wants a house they can reshape at will should look elsewhere.