SNPA Strapline


Maes y Waen, Penmachno


Pre-Application Enquiry

Pre-planning application enquiry service

Snowdonia National Park Authority is committed to working with applicants at the pre-application stage and we actively encourage pre-application discussions for all types of development.

How do I get pre-application advice?

To access the service, applicants will need to complete and submit a pre-application enquiry form and provide as much information as possible about their proposal. A Pre-application advice note has been prepared which provides further guidance on the service.

A link to the Pre-application Advice Form and Guidance Notes can be found below.

Please read the Guidance Notes thoroughly before completing your application. 

A charge is payable for this service, unless you only wish to ascertain if planning permission is required. The fee varies depending on the type and scale of the proposed development details of which can be found in the Guidance Notes.

The enquiry form and supporting information should be emailed to

Postal enquiries should be sent to

Development Management, Snowdonia National Park Authority, National Park Office, Penrhyndeudraeth, Gwynedd.  LL48 6LF

For fee paying enquiries, payment can be made either by card or cheque. Card payments can be made by calling our reception desk on 01766 770274, all cheques should be made out to Snowdonia National Park Authority.

Pre-application Form

Pre-application Advice Guidance Notes

*Please note:  You will need to save the enquiry form to your system before completing it.


The Authority will endeavour to provide a written response to all valid enquiries within 21 days of receipt.

Further help

Some small extensions to dwellings and some garden buildings do not need planning permission.  You can find information about the type of developments that need/ don't need planning permission by clicking on the following links -

Planning Permission: Common projects

Planning: A guide for householders

*Please remember to look at the sections relevant to National parks, which are identified as protected areas and are generally located at the end of every section in the Planning: A Guide for Householders document.

Any advice provided will be based on the polices contained in the Eryri Local Development Plan, relevant Supplementary Planning Guidance and National Planning Polices. Please find below links to these documents -

Adopted Eryri Local Development Plan

Supplementary Planning Guidance

Planning Policy Wales

Technical Advice Notes