Cysyltwch a Ni / Contact UsWe're just an email or phone call away. Fill out the form below and we’ll get back to you!

How to find us:

  • Swyddfa Gofrestredig:
    Registered Office:




    Ffon/Tel:
    Ffacs/Fax:
    Ebost/Email:
  • Gelli Civil Engineering Ltd
    Market Hall
    High Street
    Tremadog
    Gwynedd
    LL49 9RD
    01766 514731
    01766 515099
    admin@gellicivileng.co.uk
  • Rhif Cofrestredig/Registered Number: 5494332
    Rhif TAW/VAT No. 559 8009 07

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AccreditationsThe company is accredited to ISO 9001; ISO 14001 and will be accredited to OHSAS 18001
in June 2015; CHAS; Constructionline; Investors in People and Considerate Constructors
Scheme. We are also members of CITB ConstructionSkills and CECA (Wales).