Garden room in Ealing

Often under permitted development on the suburban stock — Class E covers incidental rear outbuildings within height and coverage limits. Conservation areas and the rear-garden rules in SPD 4 are the checks. Listed curtilage removes Class E.

Generous garden depth on the suburban stock suits garden studios under PD; conservation areas and the rear-garden rules in SPD 4 are the checks.

Generous garden depth on much of the suburban stock suits garden studios more easily than short inner-London plots, provided the 2.5m boundary-height and 50% coverage rules are respected. In conservation areas, outbuilding rights can tighten and design scrutiny rises — verify rather than assuming a rear pod is always paperwork-free. Keep the use incidental.

Permitted development (GPDO Class E) allows outbuildings for purposes incidental to the house: maximum 2.5m height within 2m of a boundary (4m for dual-pitched roofs further in), no more than half the garden covered, nothing forward of the principal elevation, and no sleeping accommodation. Within conservation areas Class E still applies at the rear, but outbuildings at the side are excluded.

The 'incidental use' test matters: an office or gym qualifies; a self-contained annexe or rentable unit does not and needs full permission. Listed buildings lose Class E entirely — any outbuilding in the curtilage of a listed house needs an application. Where you intend to run a business with visitors or convert to sleeping space later, take the planning route up front.