Llanerchymedd Wastewater Treatment Works.

1. 26 Mar 2026

   Received by Isle of Anglesey

2. 28 Apr 2026

   Decision issued: Dim Angen AEA / EIA Not Required

3. 6 Aug 2026

   Added to PlanIndex

Isle of Anglesey has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. More in our guide to what happens after a planning decision.

An outline application tests the principle of developing a site, holding back details such as appearance and landscaping as reserved matters for later approval. More in our guide to planning application types.

• The Twercuhelyn Arms, Stryd Twrcuhelyn Street, Llanerchymedd

  FPL/2023/10 Submitted 11 Jan 2023 200 yards away

  Cais llawn ar gyfer codi siop yn / Full application for the erection of a shop at

  Granted Full applications 13 docs

• 18 Y Garth, Llanerchymedd

  HHP/2020/298 Submitted 21 Dec 2020 250 yards away

  Cais llawn ar gyfer addasu ac ehangu yn / Full application for alterations and extensions at

  Granted Full applications Extension 7 docs

• Bryn Llwyd Bach, Maes Cuhelyn, Llanerchymedd

  HHP/2021/62 Submitted 26 Feb 2021 250 yards away

  Cais llawn ar gyfer addasu ac ehangu yn / Full application for alterations and extensions at

  Granted Full applications Extension 6 docs

• Siop 2, Maes Athen, Llanerchymedd.

  FPL/2023/287 Submitted 5 Oct 2023 350 yards away

  Cais llawn ar gyfer newid defnydd hen siop (Dosbarth Defnydd A1) i neuadd amlbwrpas (Dosbarth Defnydd D1) yn / Full application for the change of use of former shop (Use class A1) into a multi purpose hall (Use Class D1) at

  Granted Amendments 8 docs

• Maes Parcio Hen Stesion / Hen Stesion Car Park

  ADV/2024/14 Submitted 22 Nov 2024 350 yards away

  Cais am newid arwydd gwybodaeth gyhoeddus yn / Application for the the replacement of a public information sign at

  Granted Advertising 6 docs

• Telephone Exchange, Llanerchymedd

  LUP/2020/6 Submitted 7 May 2020 350 yards away

  Cais am dystysgrif defnydd arfaethedig o’r datblygiad oherwydd bod gwaith sylweddol wedi cychwyn ar ganiatad 25C196C/DA er mwyn diogelu’r caniatâd hwnnw ar dir tu cefn i / Application for a certificate of proposed use or development in relation to a material start having been made on permission 25C196C/DA thus safeguarding the consent on land to rear or

  Granted Outline 10 docs

• GWY/2026/2 Decided

  Tir yn a ger yr hen Safle Ferodo / Land At And Adjacent To The Former Ferodo Site, Griffiths Crossing, Caernarfon, LL55 1TP

  Cais amlinellol gyda holl faterion wedi eu cadw'n ol ar gyfer dymchwel adeiladau a strwythurau presennol, ailraddio'r tir a codi adeilad canolfan data (B8) ynghyd a chyfarpar cysylltiol i gynnwys generaduron, peirianwaith, cyfarpar, is-orsaf(oedd), mynedfeydd, parcio ac ardaloedd gwasanaethu, gwaith draenio a peirianyddol gan gynnwys cysylltu ac ail-leoli gwasanaethau / Outline application will all matters reserved for the demolition of existing buildings/structures, re-grading of land and erection of Class B8 data centre building(s) with all associated back-up generators, plant, equipment, sub-station(s), accesses, parking and servicing areas, drainage and engineering works, including services diversion/connection.

  Received 2 Sep, published by the council 16 Sep 2026 Outline
• OP/2025/1 Granted

  Llanfawr Road, Caergybi / Holyhead.

  Cais amlinellol ar gyfer codi 9 annedd fforddiadwy yn cynnwys manylion llawn o'r mynedfa, ymddangosiad, gosodiad a graddfa ar dir ger / Outline application for the erection of 9 affordable dwellings which includes full details of access, appearance, layout and scale on land near

  Received 30 Jan, published by the council 16 Sep 2026 Outline
• SCR/2026/21 Decided

  System storio ynni batri, Rhosgoch / Battery energy storage system, Rhosgoch

  Barn sgrinio ar gyfer gosod cebl o dan y ddaear i gysylltu â’r grid (safle Wylfa) i wasanaethu’r System Storio Ynni Batri a gymeradwywyd yn flaenorol ynghyd ag adeiladu a chodi isbwerdy, gorsafoedd trawsnewid a gwaith datblygu cysylltiedig yn / Screening opinion for the installation of a underground grid connection cable (at Wylfa site) to serve previously approved Battery Energy Storage System together with the construction and erection of a substation, transformer stations and associated development at

  Received 1 May, published by the council 6 Aug 2026 Outline
• SCR/2026/13 Decided

  Crud Yr Awel, Llanfaethlu.

  Barn sgrinio ar gyfer gosod paneli solar ar y ddaear yn / Screening opinion for the installation of ground mounted solar panels at

  Received 12 Mar, published by the council 6 Aug 2026 Outline
• DAG/2026/10 Decided

  Rhyd Goch, Llanfaethlu

  Cais i bennu os oes angen caniatâd blaenorol ar gyfer codi sied amaethyddol ar gyfer cadw peiriannau ar dir yn / Application to determine whether prior approval is required for the erection of an agricultural shed to store machinery on land at

  Received 22 Apr, published by the council 6 Aug 2026 Outline