Basement Conversion Planning Permission in Fareham

This guide explains planning permission rules affecting basement conversion developments in Fareham.

Permitted Development

Most householder development follows national permitted development rules unless local restrictions apply.

Height Rules

If the replacement mast is more than 30 metres in height, or 25 metres in height in a

Depth Rules

Extensions must comply with national permitted development depth limits.

Boundary Rules

Development near boundaries must follow national permitted development rules.

Roof Alterations

Roof alterations must comply with national permitted development rules.

Materials

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Local Restrictions

Additional planning restrictions may apply in conservation areas.

Listed building consent is required for works affecting listed buildings.

Last verified 2026-01

Basement Conversion Planning Rules in Fareham vs National Permitted Development

UK permitted development legislation allows many basement conversion projects without planning permission provided certain limits are followed.

However local planning authorities such as those covering Fareham may impose additional planning controls through conservation area policies or Article 4 directions.

Planning Permission Questions in Fareham

Do I need planning permission for basement conversion in Fareham?

Many basement conversion projects in Fareham may fall under permitted development rights if they remain within national planning limits.

What height can a basement conversion be without planning permission?

If the replacement mast is more than 30 metres in height, or 25 metres in height in a

How close can a basement conversion be to a boundary?

Development near boundaries must follow national permitted development rules.

Do conservation areas affect planning permission?

Yes. Additional planning restrictions may apply in conservation areas or where Article 4 directions remove permitted development rights.

Nearby Planning Guidance

Planning Authority

Planning applications for basement conversion projects in Fareham are handled by the local planning authority covering Fareham, Hampshire.

For official planning advice consult the council planning portal for your area or visit the UK Planning Portal.

Visit the UK Planning Portal

Sources and Planning Guidance

Planning Disclaimer

This guide summarises planning rules affecting basement conversion developments in Fareham.

Planning regulations may change and additional local planning policies may apply. Always confirm planning requirements with your local planning authority before starting development.

Last updated March 2026