Which Newham postcodes does this basement extension service cover?
Every Newham postcode district we draw in, the stock that dominates
it and the authority that validates a basement extension there. Newham fees below are the
statutory England rates for 2026, not basement extension estimates.
| Postcode | Area | Dominant stock | What it means for a basement extension |
|---|
| E6 | East Ham / Beckton | Victorian terraces | A basement extension at an E6 address in East Ham / Beckton is determined by Newham Council under its own Local Plan policies for East Ham / Beckton. |
| E7 | Forest Gate | Victorian terraces | Forest Gate sits wholly inside E7, so Newham Council validates every basement extension submitted from an E7 address. |
| E12 | Manor Park | Victorian terraces | E12 straddles a boundary: Manor Park addresses fall to Newham Council or Redbridge Council, so confirm which authority validates the basement extension before submitting E12 drawings. |
| E13 | Plaistow | Victorian terraces, post-war flats | A basement extension at an E13 address in Plaistow is determined by Newham Council under its own Local Plan policies for Plaistow. |
| E15 | Stratford / West Ham | New-build, post-war estates | E15 covers Stratford / West Ham only; Newham Council handles the basement extension. |
| E16 | Canning Town / Royal Docks | Post-war estates, new-build | Canning Town / Royal Docks sits wholly inside E16, so Newham Council validates every basement extension submitted from an E16 address. |
| E20 | Olympic Park / East Village | Victorian terraces across West Ham | E20 covers Olympic Park / East Village only; Newham Council handles the basement extension. |
Which Newham neighbourhoods suit a basement extension best?
Roof pitch, wall build-up and plot depth change every few Newham
streets, and each one changes what a basement extension can achieve at that address.
- Manor Park (E12) — basement extension work in Manor Park means victorian terraces. Manor Park is Victorian terraces. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged throughout E12. Newham Council decides the Manor Park application, and Manor Park station anchors the Manor Park location plan.
- Beckton (E6, E16) — 1980s estates, new-build defines Beckton, where 1980s estates, new-build set what a basement extension can do. Post-war slab foundations make basements here expensive and rarely viable across E6. Any Beckton basement extension is validated by Newham Council, with Beckton DLR the usual Beckton reference point on the site plan.
- Stratford (E15) — a basement extension in Stratford starts from new-build, post-war estates, and Stratford reads as Olympic-era new-build, regen. Post-war slab foundations make basements here expensive and rarely viable in E15. Newham Council assesses Stratford basement extensions against its own Stratford character guidance, and the location plan we draw for Stratford references Olympic Park.
- Forest Gate (E7) — Victorian terraces defines Forest Gate, where victorian terraces set what a basement extension can do. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged across E7. Any Forest Gate basement extension is validated by Newham Council, with Forest Gate station the usual Forest Gate reference point on the site plan.
- Plaistow (E13) — basement extension work in Plaistow means victorian terraces, post-war flats. Plaistow is Victorian terraces, post-war flats. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged throughout E13. Newham Council decides the Plaistow application, and Plaistow Tube anchors the Plaistow location plan.
- East Ham (E6) — a basement extension in East Ham starts from victorian terraces, and East Ham reads as Victorian terraces. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged in E6. Newham Council assesses East Ham basement extensions against its own East Ham character guidance, and the location plan we draw for East Ham references East Ham High Street.
- West Ham (E15) — Victorian terraces, post-war estates defines West Ham, where victorian terraces, post-war estates set what a basement extension can do. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged across E15. Any West Ham basement extension is validated by Newham Council, with West Ham station the usual West Ham reference point on the site plan.
How do conservation areas and Article 4 affect a basement extension in Newham?
How designation changes a Newham basement extension: Newham Council maintains 10 conservation areas, including West Ham, Manor Park, Forest Gate. Inside any of them a Newham basement extension cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. Forest Gate sets the tone for Newham casework.
What Article 4 removes near Newham: Article 4 Direction requires planning permission for any HMO conversion, plus restrictions on office-to-residential in Stratford and Royal Docks. Before pricing a basement extension we check whether the E6 address is inside the mapped area, because Newham Council draws the Newham boundary street by street rather than across the whole of Newham.
What Newham is built from: Victorian terraces across West Ham, Forest Gate, Plaistow; Olympic-era new-build in Stratford; post-war in Canning Town; substantial ongoing regeneration. High-regeneration borough; Olympic Park and Royal Docks drive major development; heavily HMO-managed borough. That mix decides the basement extension route in Newham more than the postcode does.
Which neighbouring authorities border Newham?
- Barking and Dagenham — adjoining Newham, with 9 conservation areas centred on IG11. A basement extension on the far side of the Newham line is determined by Barking and Dagenham Council, so the Newham quote for basement extensions is checked against Barking and Dagenham guidance before it is issued.
- Greenwich — the Greenwich boundary runs against Newham, so a basement extension a street from Newham is decided by Greenwich Council instead. Greenwich runs 20 conservation areas across SE3 and its neighbours, which is why basement extensions priced for Newham are re-checked against Greenwich policy whenever the Newham address sits on that edge.
- Tower Hamlets — adjoining Newham, with 58 conservation areas centred on E1. A basement extension on the far side of the Newham line is determined by Tower Hamlets Council, so the Newham quote for basement extensions is checked against Tower Hamlets guidance before it is issued.
- Hackney — the Hackney boundary runs against Newham, so a basement extension a street from Newham is decided by Hackney Council instead. Hackney runs 29 conservation areas across E2 and its neighbours, which is why basement extensions priced for Newham are re-checked against Hackney policy whenever the Newham address sits on that edge.
Sources for this Newham basement extension page: borough policies maps and
conservation-area registers (2025–26), Royal Mail postcode district boundaries,
the Town and Country Planning (Fees for Applications) (England) Regulations, the Town
and Country Planning (General Permitted Development) (England) Order 2015 as amended,
and the Party Wall etc. Act 1996.
