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Internal Space Standards Plans

Last updated October 29, 2026.

Local validation checklist code B21

  1. When you'll need to provide this
  2. What you'll need to include
  3. Why we need it

When you'll need to provide this

You may need to include this if you're submitting your planning application to Maidstone Borough Council.

For applications submitted to Maidstone Borough Council

All new dwellings created through subdivision, conversion or new build.

Typical proposals

The internal space standards plans planning application requirement is typically needed when you're proposing to do any of the following:

New housing development; Converting a building into homes; Change of use

What you'll need to provide

What you'll need to include in your application

For applications submitted to Maidstone Borough Council

Applications should demonstrate that the internal space standards are met, this could be through annotated/scaled/dimensioned drawings or tables which show room size standards are met.

Why we need you to provide this

Why we need you to include this in your application.

For applications submitted to Maidstone Borough Council

The NPPF promotes creating places that are safe, inclusive and accessible and which promote health and well-being, with a high standard of amenity for existing and future users.

Maidstone Building for Life 12 promotes standards of amenity. Local Plan Review Policy LPRQD6 (technical standards) requires that all new dwellings created through subdivision, conversion or new build meet the internal space standards set out.