Welcome to Gelli Civil Engineering, a family run business which was established in May 1990 and became a limited company is 2005. In March 2015 the business moved to larger premises at the historic Market Hall in Tremadog. The company carries out civil engineering highways projects and maintenance work as main contractor for a range of north and mid Wales public sector bodies.

The company’s objective is to provide and maintain a high standard of workmanship, using a local supply chain.

AccreditationsThe company is accredited to ISO 90012015; ISO 14001:2015 & OHSAS 18001:2004 (SSIP);
CHAS (SSIP); Constructionline; and Considerate Constructors Scheme (CCS).
We are also members of CITB ConstructionSkills and CECA (Wales).