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Kitchen Extension Planning Permission in Stratford

08 Aug 2026

Whether a kitchen extension in Stratford needs planning permission usually comes down to size, not the fact of building one at all - most single-storey rear extensions qualify for permitted development, subject to the limits below and to Stratford's own conservation area restrictions.

Permitted development limits

Without full planning permission, a single-storey rear extension in Stratford is typically capped at 3m beyond the rear wall for terraced and semi-detached houses, or 4m for detached houses. Going further - up to 6m or 8m respectively - is possible via the "larger home extension" prior approval route, which means notifying neighbours through the London Borough of Newham and clearing an objection period before building.

Height limits typically apply too - commonly around 4m maximum for a single-storey rear extension, and no higher than 4m within 2m of a boundary.

What's different in Stratford

Where the Stratford St John's, Sugar House Lane and Three Mills conservation areas cover parts of Stratford, permitted development rights for extensions are commonly restricted or removed entirely - materials, roofline and even window style may need to match the existing house rather than a standard modern finish. the London Borough of Newham's planning department can confirm your specific property's status before you commit to a design.

Get it confirmed, don't assume it

Even where permitted development likely applies, a Lawful Development Certificate from the London Borough of Newham is a formal, low-cost confirmation that protects you if a neighbour complains or you sell the house later. A builder who works regularly in Stratford will usually have a good instinct for whether your plans qualify, but the council's confirmation is what removes doubt entirely.

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Frequently asked questions

Do I need planning permission for a kitchen extension in Stratford?

Usually not up to 3m (terraced/semi-detached) or 4m (detached) beyond the rear wall - or 6m/8m via the larger home extension prior approval scheme - but the Stratford St John's, Sugar House Lane and Three Mills conservation areas can restrict or remove this right, so check with the London Borough of Newham first.

What's a Lawful Development Certificate, and do I need one?

It's a formal, low-cost confirmation from the London Borough of Newham that your extension doesn't need planning permission because it's within permitted development. It's optional but strongly recommended, since it removes any doubt if a neighbour complains or you sell the house later.