At Ap Thomas Cyf we are extremely proud of our ongoing and all of our completed projects.  To provide you with a flavour of our expertise, please feel free to examine our online virtual portfolio. 

The portfolio is organised to reflect our specialist areas - please click on the category for further details:- 



The Ap Thomas Cyf has experience in most types of commercial projects ranging from the refurbishment of historic hotels within restricted town sites to the construction of bespoke purpose built showrooms in more commercial settings. In each project the client’s needs have been carefully assessed and the works designed and programmed accordingly.

A small selection of works is illustrated here and some recently completed projects are included in the case studies.

  • To view a case study of Aberdunant Hall Country Hotel - click here
  • To view a case study of the The Bull Hotel, Llangefni, Anglesey - click here
  • To view a case study of the The Black Boy Inn, Caernarfon - click here


Aberdunant Hall
Country Hotel
Bull Hotel Llangefni
Listed Building
The Black Boy Inn, Caernarfon

The Ap Thomas Cyf has experience in all aspects of the design and construction of dwellings: from adaptations and extensions of traditional cottages in the National Park, the refurbishment of listed town houses, to the construction of new bespoke dwellings designed to clients’ specific needs.
The partnership is aware of the regional planning policies and of the details required for particular applications and over the years it has formed a good working relationship with the local planning officers.   

The partnership is also involved with the designing of larger developments of speculative housing and of developments for housing associations throughout North Wales.

Restoration: Historic Homes
New Developments: Town houses
New Private Dwellings
Bespoke private dwellings
Adaptations and extensions to traditional properties
Maes Glas University of Wales, Bangor
Leisure Centre, Porthmadog
Dyffryn Nantlle Sports Centre


Over the last 25 years the Ap Thomas Cyf has been involved with the design and construction of a variety of sports and leisure facilities and during this period it has developed particular lines of expertise in the field. The developments have ranged from small communal halls to large regional centres which include all manner of sporting and leisure facilities including swimming pools. The practice has also been involved with the refurbishment and upgrading of leisure facilities.

Some of the new developments include the Glaslyn Leisure Centre Porthmadog, and Arfon Tennis Centre Caernarfon, whilst some of the major extensions and refurbishment projects include the Maes Glas Sports Facilities for the University of Wales Bangor and the National Watersports Centre at Llanfairisgaer Caernarfon.
The partnership has also been involved with general refurbishment and improvement works to pools and leisure facilities throughout Gwynedd.

Currently the Partnership is involved with the design of new facilities for Bangor University at Treborth Bangor and with a private leisure complex at Aberdunant Porthmadog. 

Sports and Leisure Projects:
Dwyfor Leisure Centre Pwllheli , Barrow in Furness Leisure Centre, Northwich Community Swimming Pool, sports centres at Penygroes and Bethesda Gwynedd, Arfon Tennis Centre Caernarfon, and Glaslyn Leisure Centre Porthmadog.

The Ap Thomas Cyf is located in an area of the country which is full of scheduled ancient monuments, listed buildings and conservation areas and a substantial part of the workload involves buildings of special architectural character in areas of historic interest, many of which are also within the Snowdonia National Park.
The Partnership is therefore very aware of the additional planning constraints that apply to these structures and over the years it has developed a good working relationship with the officers in the local planning authorities, as well as those in CADW – the Welsh Assembly Government’s historic environment service.
The Partnership can also assist with the submission of applications for financial assistance for eligible works on historic buildings.

National Slate Museum
Scheduled Ancient Monument
Bull Hotel Llangefni
Listed Building
Porth yr Aur Caernarfon World Heritage Site

Throughout it’s long history the Ap Thomas Cyf has been involved with community projects in various parts of North Wales. These have ranged from the refurbishment of chapels and churches, the construction of new community centres, to the construction of local sports facilities.
In all these projects the Partnership has worked with appointed committee members to ensure that appropriate briefs were developed and budget costs established. The Partnership has also assisted in the preparation of grant aid applications.

The Ap Thomas Cyf has been a long serving member of the North Wales branch of Business In The Community - an organisation that has provide free professional advice for community projects.   

The partners accept that on most community projects meetings have to be held in the evenings and that members of the organisation – and the public in certain projects - need to be informed of the development of the progress of the project. Reports and illustrations to meet the needs can be prepared in English and in Welsh if required.

Mae’r partneriaid yn gyfforddus yn Cyflwyno adroddiadau yn y Gymraeg a’r Saesneg.  


Community Hall, Talysarn                 
Canofan Hen Felin, Aber                             
Community Fire Station, Rhyl


  • To view a communal case study of the Fire Station, Rhyl - click here
  • To view a communal case study of the CAB, Bangor- click here


Ysgol Eifion Wyn, Porthmadog


The Ap Thomas Cyf has been involved with numerous education authorities and institutions in North Wales in the design of new facilities and the refurbishment of existing schools and further education premises. In recent years it has worked with the architectural staff of Gwynedd Council on new schools at Porthmadog ( Eifion Wyn Primary School ) and at Bangor ( New Friars  School ).
The Partnership has also designed facilities for the University of Wales Bangor (Major extensions and adaptations to sports facilities at Maes Glas, Bangor) and specialist facilites (Centre of Marine Excellence at Pwllheli and Food Technology Centre at Llangefni) for Coleg Menai and (Performing Arts Centre, Parc Menai,Bangor) for Ysgol Glanaethwy.

The refurbishment works and extensions have been carried out at numerous schools on the Isle of Anglesey and in Gwynedd and the Partnership is fully aware of the logistic and safety issues that need to be considered when planning works within educational premises.

Food Technology Centre, Llangefni
Marine Excellence, Pwllheli


The Ap Thomas Cyf has carried out surveys and reports on numerous chapels and churches throughout North West Wales.
With sizes of congregations generally decreasing the partnership has been able to provide useful guidance on the anticipated costs of repairs and maintenance and in certain instances, to asses the costs of possible changes to parts of the buildings for alternative uses - to provide income for the future.

The Partnership has also been involved with the construction of new chapels in Penygroes, Porthmadog and Bangor. Current projects include repair and refurbishment works at Llanaelhaearn Church, Capel Jerusalem, Bethesda, Eglwys Unedig Rhos y Gad Llanfairpwll, Capel Gad MC Bodffordd, and Egwys St Cross, Talybont, Bangor. 




The Ap Thomas Cyf is employed by numerous companies in the area to assist in the development of their sites. The projects range in complexity from the construction of new purpose built units to the refurbishment of existing premises. These works are usually carried out whilst the sites are operational and the practice has therefore developed expertise in working with specialist subcontractors and assessing and programming works on restricted and sensitive sites.

Recent clients include:
Gwynedd Shipping Ltd, Holyhead, Anglesey
Roberts of Portdinorwic, Y Felinheli, Gwynedd
Afonwen Laundry Services, Afonwen, Pwllheli

South Caernarfon

Other works include the design of standard factory units at –
Agriparc, Llanystumdwy ,Criccieth
Penrhos, Holyhead,
Cefndy Road Rhyl


To view a industrial case study of the Food Processing and Distribution Facillities- click here



If you require any further information please feel free to contact us.