Builders in Tower Hamlets: Georgian Terrace & Docklands Specialists in E1, E2, E3 & E14

Often, yes. Around 58 conservation areas cover a large share of the borough's streets, and inside them most external changes need a full application rather than a permitted development route. Outside every conservation area and Article 4 property, a standard single-storey rear extension can still fall under permitted development within national size limits. We check your exact address before recommending a route.

Quite possibly. The borough has around 58 conservation areas, including Fournier Street and Elder Street in Spitalfields, Wapping Pierhead, Narrow Street in Limehouse, Victoria Park and Tredegar Square in Bow among many others. Check your exact address on Tower Hamlets Council's conservation area maps, or ask us to check it as part of a free quote.

Fournier Street and the surrounding Spitalfields streets hold some of the best-preserved Georgian terraces in London, and an Article 4 Direction there removes permitted development rights for external alterations that would be allowed elsewhere in the borough. Even small changes like windows and doors typically need a full planning application on these streets.

Yes, it sits predominantly in Environment Agency Flood Zone 3a, a tidal loop of the Thames protected by flood defences, since the area was reclaimed from marshland. The high water table this creates also affects basement and below-ground drainage design, separately from the tidal flood risk itself.

In five conservation areas, Clinton Road, Driffield Road, Medway, Ropery Street and Tredegar Square, the council has published specific design guidance for mansard roof extensions, giving a clearer route to consent than a standard conservation area application. Elsewhere, a mansard still needs full planning permission but without that dedicated guidance.

Almost certainly, in the more terraced parts of the borough. Spitalfields, Bethnal Green and Bow's terraces are close enough together that nearly every rear extension or loft conversion falls within 3 metres of a neighbouring property, triggering the Party Wall etc. Act 1996. Notices need serving at least two months before work starts, and we handle this as part of the project.

Slower than the statutory target: comparable domestic extension proposals average around 11.7 weeks, above the 8-week statutory period for householder applications, though the council approves around 89 percent of what it decides. We build a realistic timeline into every quote rather than promising the statutory minimum.

We cover the full borough, including Spitalfields, Bethnal Green, Bow, Mile End, Whitechapel, Wapping, Limehouse, Poplar and the Isle of Dogs, across postcodes E1, E1W, E2, E3 and E14.

The national rules have never included a basement or excavation class in permitted development anywhere in England, and the Isle of Dogs' reclaimed marshland and high water table make a full, properly engineered application even more important there than elsewhere. Every scheme needs a full planning application regardless of size.

Tower Hamlets sits close to central London, with dense conservation coverage and high land values, which pushes construction costs above the outer-London average. A single-storey rear extension typically runs £4,000 to £5,500 or more per square metre here, compared with £2,800 to £4,500 in several outer boroughs.

Fournier Street and the surrounding streets hold some of the best-preserved 18th-century terraces in London, built for Huguenot silk weavers. The area's listed buildings and Article 4 Direction mean even small external changes typically need planning permission, and materials need to match the period detailing closely.

Canary Wharf and the wider Isle of Dogs fall under the same Tower Hamlets planning authority, though the area's modern towers and estate-scale developments are typically handled through major applications rather than the householder process most extensions use. Residential streets nearby still follow the borough's standard householder rules.

They are 14 areas identified through the council's own surface water modelling as being at greater risk of surface water flooding, separate from the tidal flood risk on the Isle of Dogs. Development in these areas typically needs a more detailed drainage strategy as part of the planning application.