Planning Applications in South East England: What's Really Happening

The Planning Landscape in South East

The South East of England sits in a permanent tension between housing demand and environmental protection. As the most populated region outside London, it bears the brunt of commuter belt pressures while containing some of England's most protected landscapes — the Surrey Hills, the High Weald, the Kent Downs, the Chilterns, and the South Downs National Park.

Housing targets under the standard method consistently push South East authorities to deliver tens of thousands of new homes. Yet the region's extensive Green Belt coverage — particularly across Surrey, Hertfordshire, Kent, and Buckinghamshire — creates a fundamental constraint. Local Plans that propose even modest Green Belt release face fierce opposition and frequently stall at examination. The result is that development pressure funnels into the remaining unprotected land, driving up densities and intensifying opposition in those areas.

Areas of Outstanding Natural Beauty (AONBs) — now legally renamed National Landscapes — cover significant portions of the South East. The Cotswolds, North Wessex Downs, Surrey Hills, and High Weald all impose additional planning constraints, requiring that "great weight" is given to conserving landscape beauty. In practice, this means that housing development within or affecting the setting of an AONB faces a much higher bar for approval.

Coastal development presents unique challenges. The region includes major settlements along the Solent (Southampton, Portsmouth), the Sussex coast (Brighton, Worthing, Eastbourne), and the Kent coast (Dover, Folkestone, Thanet). Rising sea levels and coastal erosion increasingly affect planning decisions, with the Shoreline Management Plans and flood risk assessments playing a growing role. Brighton & Hove, constrained between the sea and the South Downs, faces particularly acute development pressure with almost no room to expand outward.

Major infrastructure projects have reshaped the South East planning landscape. HS2's terminus at Old Oak Common draws development interest along the western corridor, while the Lower Thames Crossing — one of the largest planning applications ever submitted to the Planning Inspectorate — would reshape development patterns across north Kent and south Essex.

The South East also has significant military land, including the Aldershot Garrison area and former RAF bases, which periodically come forward for major redevelopment. Welborne Garden Village near Fareham and Gilston in Hertfordshire represent the type of strategic-scale housing schemes that the region increasingly relies upon to meet its targets.

Permitted development conversions — particularly office-to-residential under Class MA — have had a dramatic impact across the region. Towns like Reading, Crawley, and Basingstoke have seen large office buildings converted to flats, often with concerns about unit sizes, amenity space, and the loss of employment floorspace. Several authorities have introduced Article 4 directions to restrict these conversions in key employment areas.