Self-assessment for householder planning permission

Part of
Planning permission for householders

The self-assessment forms can help you decide if you need to submit a planning application. The forms cover most types of development to your home.

You will need to submit a planning application if either:

you answer YES to any questions on the self-assessment form
your development does not comply with any conditions explained on the self-assessment form

If you do conclude that you need planning permission, you may want to apply for pre-application advice for householders before you submit the application.

Before completing a self-assessment form

Find out about common planning projects for householders and read our guidance documents for householder development.

You can also get step-by-step guidance by visiting the Planning Portal website section titled Do you need permission?

If you need a formal decision as to whether a proposed or existing use or development is lawful, you can submit an application for a Lawful Development Certificate.

These self-assessment forms do not provide you with a formal decision. They will not confirm whether planning permission would be granted.

Form A: Extensions and other alterations

This is for developments that are attached to your house, including:

extensions
conservatories
attached garages
other alterations such as windows, verandas, balconies

Planning Permission Self-Assessment Form A

(PDF, 51.07 KB)

Prior Approval Notification (Proposed Larger Home Extension) Application Form

(PDF, 41.39 KB)

Notes on Larger Home Extensions Consultation Scheme

(PDF, 559.06 KB)

Form B: Outbuildings

This is for development separate from the property, including:

containers for domestic heating
sheds, greenhouses and garages
ancillary garden buildings (such as garden rooms, swimming pools, sauna cabins, kennels, enclosures)

Planning Permission Self-Assessment Form B

(PDF, 73.58 KB)