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 Former Seiont Brickworks, Seiont mill road, CaernarfoN, LL55 2YL

Cadnant Planning Ltd has been commissioned by Seiont Ltd to undertake a pre-application consultation (PAC) in respect of proposed development on former Seiont Brickworks, Seiont Mill Road, Caernarfon, LL55 2YL.

We give notice that Seiont Ltd is intending to apply for full planning permission for the creation of a new vehicular access and associated visibility splays and alterations to Waunfawr Road, creation of internal access road, stopping up of access to Plas Treflan together with the change of use of land for general storage (B8 use class), concrete batching plant area, recycling area, erection of new recycling plant building, plant maintenance and retention of workshop building, and the retention of portacabins to be used as offices with associated parking.

Prior to formal submission to the Local Planning Authority and in accordance with the requirements set out in Part 1A of the Town & Country Planning (Development Management Procedure) (Wales) (Amendment) Order 2016, the proposal will be subject to pre-application consultation.

A public consultation event will be held at Caernarfon Rugby Club, Y Morfa, Caernarfon, LL55 2YF on Tuesday 12 December 2023 between 3pm and 6pm. Members of the team will be in attendance to discuss the proposals. The formal Pre-Application Consultation period will commence on 7th December 2023.

about this application

The application seeks permission for permanent use of the land for storage purposes, batching of concrete, recycling of inert materials, maintenance of civil engineering plant and the export of finished materials and products at the Former Seiont Brickworks site. The application also seeks to formalise the existing haul route and create a new access onto Waunfawr Road which would serve the proposed use.


The site of the former Seiont brickworks factory has been used as a temporary compound in connection with the Caernarfon to Bontnewydd bypass (‘the bypass’) construction project, under two planning permissions, reference C17/0011/19/MW and C17/0107/19/LL. This area contains offices, mobile concrete batching facilities, heavy plant workshop facilities, materials processing and storage areas and associated car parking.

With the bypass construction nearing completion, this application seeks to facilitate a suitable use for the site on a permanent basis. This application is separate to the intended Development of National Significance application for a gas fired short-term operating reserve (STOR) electricity generation plant which is proposed for an area adjacent to this proposal.

This consultation has ended. 

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