Council planning record

Conversion of outbuilding into open market dwelling and installation of sewage treatment plant

Nant Eos, Dyffryn Ardudwy. LL44 2HX

All consultations completeReference: NP5/58/363KEryri National Park

Last published check: 30 Sept 2026, 11:49. Check the council record for more recent changes.

Application location

Nant Eos, Dyffryn Ardudwy. LL44 2HX

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Application summary

Status
All consultations complete
Application type
Full
Received
9 Jun 2025
Validated
Not published
Determination deadline
3 Aug 2025
Local authority
Eryri National Park

Application overview

Conversion of outbuilding into open market dwelling and installation of sewage treatment plant

Proposal details

Reference
NP5/58/363K
Development type
Minor
Ward
Dyffryn Ardudwy ED
Parish
Dyffryn Ardudwy
Agent
Mr. Geraint Lewis
UPRN
AP2CMM895U95CH40F3

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Documents 19 of 19

DocumentPublishedAction
FF9 Jun 2025View
E19 Jun 2025View
LL9 Jun 2025View
AE19 Jun 2025View
E29 Jun 2025View
E39 Jun 2025View
C9 Jun 2025View
S - CNC / NRW 23.06.2525 Jun 2025View
S - D"{r Cymru / Welsh Water 25.06.2527 Jun 2025View
S - FCRMU 01.07.252 Jul 2025View
S - Ecoleg / Ecology 26.06.253 Jul 2025View
S - Cyngor Cymuned / Community Council 03.07.254 Jul 2025View
S - CNC / NRW 11.08.2511 Aug 2025View
E4 - 04.09.254 Sept 2025View
AE2 - 31.07.254 Sept 2025View
S - Ecoleg / Ecology 02.09.2515 Sept 2025View
S - Ecoleg / Ecology 19.09.2522 Sept 2025View
S - CNC / NRW 24.09.2524 Sept 2025View
RhP19 Jan 2026View

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Application timeline

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  1. Application date

    Published milestoneCouncil source
  2. Received date

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  3. Registration date

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  4. Site notice date

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  5. Site notice end date

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  6. Decision due date

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  7. Consultation expiry date

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  8. Statutory expiry date

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  9. Dispatch date

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  10. Decision date

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  11. Extension date

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  12. Decision expiry date

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Decision & conditions

Permitted with conditions
Planning conditions
  1. The development hereby permitted shall be commenced before the expiration of FIVE years from the date of this decision.
  2. Rhaid dechrau'r datblygiad a ganiateir yma cyn pen PUM mlynedd o ddyddiad y penderfyniad hwn.
  3. The development hereby permitted shall be carried out in accordance with the following approved plans: Nant Eos Site Plan indicating landscaping and location of Sewerage Treatment Plant – Received 09/06/25 Drawing No. 1010-02 revision A – Proposed Plans and Biodiversity Enhancements Measures – Received on 04/09/2025 Clenviro Sewage Treatment Systems Green Infrastructure Statement - Dated 06/06/2025 Bat Survey Report by I & G Ecological Consulting Ltd. - Dated 30/07/2025
  4. Mae'n rhaid cyflawni'r datblygiad a ganiateir yma yn unol â'r cynlluniau a gymeradwywyd isod: Nant Eos Site Plan indicating landscaping and location of Sewerage Treatment Plant – Derbynwyd 09/06/25 Drawing No. 1010-02 revision A – Proposed Plans and Biodiversity Enhancements Measures – Derbynwyd 04/09/2025 Clenviro Sewage Treatment Systems Green Infrastructure Statement - Dyddiedig 06/06/2025 Bat Survey Report by I & G Ecological Consulting Ltd. - Dyddiedig 30/07/2025
  5. The dwellinghouse hereby approved shall not be occupied other than in strict accordance with the Town and Country Planning (Use Classes) (Amendment) (Wales) Order 2022, Use Class C3: Dwellinghouse, i.e., as sole or main residence for more than 183 days in any calendar year and for no other purpose within Use Class C
  6. Ni chaniateir meddiannu'r t"} annedd a gymeradwyir drwy hyn ac eithrio yn unol yn llwyr â Gorchymyn Cynllunio Gwlad a Thref (Dosbarthiadau Defnydd) (Diwygio) (Cymru) 2022, Dosbarth Defnydd C3: T"} annedd, h.y., fel unig neu brif breswylfa am fwy na 183 diwrnod mewn unrhyw flwyddyn galendr ac at unrhyw ddiben arall o fewn Dosbarth Defnydd C
  7. The roof of the dwellinghouse shall be covered with blue-grey slates from the Blaenau Ffestiniog area, or slates with equivalent colour, texture and weathering characteristics details of which shall be provided and approved in writing by the Local Planning Authority. (Retained thereafter)
  8. Mae'n rhaid i do'r t"} gael ei orchuddio gyda llechi llwydlas o ardal Blaenau Ffestiniog, neu lechi gyda nodweddion lliw, gwead a hindreuliad tebyg fel y cymeradwyir yn ysgrifenedig gan yr Awdurdod Cynllunio Lleol. (A'u cadw wedi hynny).
  9. All external doors and windows in the development hereby permitted shall be of timber construction and shall at all times thereafter be retained as timber.
  10. Bydd rhaid i ddrysau allanol a ffenestri'r datblygiad a ganiateir yma gael eu hadeiladu mewn pren ac wedyn eu cadw felly mewn pren.
  11. The rooflights on the development shall be of the 'Conservation Type' with a frame flush with the outer face of the roof slope
  12. Rhaid i oleuadau to'r datblygiad fod o'r 'Math Cadwraeth' gyda ffrâm yn wastad ag wyneb allanol llethr y to
  13. The applicant/developer shall ensure that the Proposed Mitigation as detailed on Plans, 'Drawing No. 1010-02, Rev A, (Biodiversity Measures Sept 2025)’, shall be followed and implemented in full within 6 months following completion of development and maintained thereafter
  14. Rhaid i'r ymgeisydd/datblygwr sicrhau bod y Lliniaru Arfaethedig fel y'i manylir ar y Cynlluniau, 'Drawing No. 1010-02, Rev A, (Biodiversity Measures Sept 2025)', yn cael ei ddilyn a'i weithredu'n llawn o fewn 6 mis ar ôl cwblhau'r datblygiad a'i gynnal wedi hynny
  15. The applicant/developer shall ensure that further Biodiversity enhancement for the site in the form of planting native trees species (minimum of 15 trees) as detailed in Proposed Plans, 'Drawing No. 1010-02, Rev A, (Biodiversity Measures Sept 2025)’ shall be followed and implemented in full within 6 months following completion of development and maintained thereafter
  16. Rhaid i'r ymgeisydd/datblygwr sicrhau bod gwelliant pellach i fioamrywiaeth y safle ar ffurf plannu rhywogaethau coed brodorol (o leiaf 15 o goed) fel y manylir yn y Cynlluniau Arfaethedig, 'Drawing No. 1010-02, Rev A, (Biodiversity Measures Sept 2025)' yn cael ei ddilyn a'i weithredu'n llawn o fewn 6 mis ar ôl cwblhau'r datblygiad a'i gynnal wedi hynny
  17. All planting, seeding or turfing comprised in the approved details of landscaping shall be carried out in the first planting and seeding seasons following the occupation of the buildings or the completion of the development, whichever is sooner; and any trees or plants which within the period of 5 years from the completion of the development die, are removed or become seriously damaged or diseased shall be replaced in the next planting season with others of similar size and species
  18. Rhaid i unrhyw blannu, hau neu dywarchen sydd wedi'i chynnwys yn y manylion tirlunio cymeradwy gael eu cynnal yn y tymhorau plannu a hau cyntaf yn dilyn meddiannu'r adeiladau neu gwblhau'r datblygiad, pa un bynnag sydd gyntaf; a rhaid i unrhyw goed neu blanhigion sydd o fewn y cyfnod o 5 mlynedd o gwblhau'r datblygiad farw, yn cael eu tynnu neu'n cael eu difrodi'n ddifrifol neu'n glefyd gael eu disodli yn y tymor plannu nesaf gydag eraill o faint a rhywogaeth debyg
  19. Notwithstanding the provision of the Town and Country Planning (General Permitted Development) Order 1995 (as amended by the Town and Country Planning General Permitted Development) (Amendment) (Wales) Order 2013 (or any Order revoking or re-enacting or amending that Order with or without modification) nothing shall operate so as to permit (within the area subject to this permission) any development referred to in the Parts and Classes of Schedule 2 to the Order, summarised below: PART 1: DEVELOPMENT WITHIN THE CURTILAGE OF A DWELLINGHOUSE Class A: The enlargement, improvement or other alteration of a dwellinghouse. Class B: The enlargement of a dwellinghouse consisting of an addition or alteration to its roof. Class C: Any other alteration to the roof of a dwellinghouse. Class D: The erection or construction of a porch outside any external door of a dwellinghouse. Class E: The provision within the curtilage of the dwellinghouse, of any building or enclosure, , raised platform, swimming or other pool required for a purpose incidental to the enjoyment of the dwellinghouse as such, or the maintenance, improvement or other alteration of such a building, enclosure, platform or pool; or a container used for domestic heating purposes for the storage of oil or liquid petroleum gas. Class F: The provision within the curtilage of a dwellinghouse of a hard surface for any purpose incidental to the enjoyment of the dwellinghouse as such; or the replacement in whole or in part of such a surface. Class H: The installation, alteration or replacement of a microwave antenna on a dwellinghouse or within the curtilage of a dwellinghouse. PART 2: MINOR OPERATIONS Class A: Gates, fences, walls and other means of enclosures. Class C: The painting of the exterior of any building or work. PART 40: INSTALLATION OF DOMESTIC MICROGENERATION EQUIPMENT No such developments shall be carried out at any time within these Parts and Classes without the express grant of permission by the Local Planning Authority.
  20. Er gwaethaf darpariaethau Gorchymyn Cynllunio Gwlad a Thref (Datblygu Cyffredinol a Ganiateir) 1995 (fel y’i diwygiwyd gan Orchymyn Cynllunio Gwlad a Thref (Datblygu Cyffredinol a Ganiateir) (Diwygiad) (Cymru) 2013 (neu unrhyw Orchymyn sy’n diddymu, yn ailddeddfu neu’n addasu’r Gorchymyn hwnnw gyda neu heb addasiad) nid oes dim i'w ddehongli fel pe bai'n caniatáu (o fewn yr ardal sy'n destun y caniatâd hwn) unrhyw ddatblygiad y cyfeirir ato yn y Rhannau a'r Dosbarthiadau canlynol o Atodlen 2 i'r Gorchymyn, a grynhoir isod: RHAN 1: DATBLYGIAD O FEWN CWRTIL T"] ANNEDD Dosbarth A: Ymestyn, gwella neu fel arall newid t"} annedd. Dosbarth B: Ymestyn t"} annedd, gan gynnwys ychwanegu at neu newid ei do. Dosbarth C: Unrhyw newid arall i do t"} annedd. Dosbarth D: Codi neu adeiladu portsh y tu allan i unrhyw ddrws allanol y t"} annedd. Dosbarth E: Darparu o fewn cwrtil y t"} annedd, unrhyw adeilad neu glôs, llwyfan wedi’i godi, pwll nofio neu bwll arall at bwrpas sy'n gysylltiedig â mwynhau'r t"} annedd, neu gynnal a chadw, gwella neu newid adeilad neu glôs, llwyfan neu bwll; neu gynhwysydd at bwrpasau gwresogi domestig i storio olew neu hylif petrolewm nwy (LPG) fel arall. Dosbarth F: Darparu o fewn cwrtil t"} annedd wyneb caled at bwrpas sy'n gysylltiedig â mwynhau'r t"} annedd; neu amnewid yn llwyr neu yn rhannol wyneb o’r fath. Dosbarth H: Gosod, newid neu amnewid antena microdon ar d"} annedd neu o fewn cwrtil t"} annedd. RHAN 2: MÂN NEWIDIADAU Dosbarth A: Giatiau, ffensys, waliau a dulliau eraill o amgáu a therfynu. Dosbarth C: Paentio tu allan i unrhyw adeilad neu adeiladwaith. RHAN 40: GOSOD CYFARPAR MICROGYNHYRCHU DOMESTIG Ni chaiff unrhyw ddatblygiadau o’r fath eu cyflawni ar unrhyw adeg o fewn y Rhannau a’r Dosbarthiadau hyn heb fynegiant o ganiatâd gan yr Awdurdod Cynllunio Lleol.
  21. Nothwithstanding the provisions of Section 55 (2)(d) of the Town and Country Planning Act 1990, no caravan shall be positioned within the curtilage of the dwellinghouse hereby approved without the express grant of permission by the Local Planning Authority.
  22. Er gwaethaf darpariaethau Adran 55 (2)(d) o Ddeddf Cynllunio Gwlad a Thref 1990, ni chaniateir gosod carafán yng nghwrtil y t"} annedd a ganiateir drwy hyn heb gael caniatâd yr Awdurdod Cynllunio Lleol.
  23. To Comply with Section 91 (as amended) of the Town and Country Planning Act 1990.
  24. I gydymffurfio a Rhan 91 (fel y diwygiwyd) o'r Ddeddf Gynllunio Gwlad a Thref 1990.
  25. To define the permission and for the avoidance of doubt.
  26. Er mwyn diffinio’r caniatâd ac i osgoi amheuaeth.
  27. To ensure that the dwellinghouse is only used as sole or main residence in accordance with the Eryri Local Development Plan (2016-2031), in particular Policies SP A, and G and DP 9
  28. Er mwyn sicrhau mai dim ond fel unig breswylfa neu brif breswylfa y defnyddir y t"} annedd yn unol â Chynllun Datblygu Lleol Eryri (2016-2031), yn benodol Polisïau SP A, a G a DP 9
  29. To ensure a satisfactory standard of appearance of the development and the use of appropriate local building materials, in accordance with Eryri Local Development Plan Policies 2016-2031 and in particular policies 1, 6 and A.
  30. Er mwyn sicrhau fod y datblygiad yn edrych yn foddhaol ac y defnyddir deunyddiau adeiladu lleol priodol, yn unol â Pholisïau Cynllun Datblygu Lleol Eryri 2016-2031 ac yn enwedig polisïau 1, 6 ag A.
  31. To protect the character and appearance of the building and its setting in accordance with Eryri Local Development Plan Policies 2016-2031 and in particular Policies A, 1, 6 (and 7).
  32. Er mwyn diogelu cymeriad ac edrychiad yr adeilad a’i osodiad yn unol â Polisiau Cynllun Datblygu Lleol Eryri 2016-2031 ac yn enwedig Polisiau A, 1, 6 (a 7).
  33. To ensure a satisfactory standard of appearance of the development and the use of appropriate local building materials in accordance with Eryri Local Development Plan Policies and in particular Policies 1, 6, 7 & 9
  34. Er mwyn sicrhau safon foddhaol o ran ymddangosiad y datblygiad a defnyddio deunyddiau adeiladu lleol priodol yn unol â Pholisïau Cynllun Datblygu Lleol Eryri ac yn benodol Polisïau 1, 6, 7 a 9
  35. To ensure a satisfactory standard of development and to minimise the risk of unacceptable harm or disturbance to protected species in accordance with Eryri Local Development Plan Policies and in particular Policy D
  36. Er mwyn sicrhau safon foddhaol o ddatblygiad a lleihau'r risg o niwed neu aflonyddwch annerbyniol i rywogaethau gwarchodedig yn unol â Pholisïau Cynllun Datblygu Lleol Eryri ac yn benodol Polisi D
  37. To ensure a satisfactory standard of development and to minimise the risk of unacceptable harm or disturbance to protected species in accordance with Eryri Local Development Plan Policies and in particular Policy D
  38. Er mwyn sicrhau safon foddhaol o ddatblygiad a lleihau'r risg o niwed neu aflonyddwch annerbyniol i rywogaethau gwarchodedig yn unol â Pholisïau Cynllun Datblygu Lleol Eryri ac yn benodol Polisi D
  39. To preserve and enhance the visual amenities of the area, in accordance with Eryri Local Development Plan Policies and in particular Policy 1
  40. Er mwyn gwarchod a gwella amwynderau gweledol yr ardal, yn unol â Pholisïau Cynllun Datblygu Lleol Eryri ac yn benodol Polisi 1
  41. The Local Planning Authority considers that such development should be subject to formal control in order to safeguard the amenities of the area.
  42. Mae’r Awdurdod Cynllunio Lleol yn ystyried y dylai datblygiad o’r fath fod yn destun rheolaeth ffurfiol er mwyn diogelu amwynderau'r ardal.
  43. The Local Planning Authority considers that such development should be subject to formal control to safeguard the visual amenities of the area.
  44. Mae’r Awdurdod Cynllunio Lleol yn ystyried y dylai datblygiad o'r fath fod yn destun rheolaeth ffurfiol i ddiogelu amwynderau gweledol yr ardal.
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