J Cox Groundworks & Excavation are a family owned business based in Laghy, Co. Donegal. We have many years experience in most aspects of Groundworks and Excavation. We specialise in site clearance, foundations, sub-flooring, utility laying, drainage, septic tank installation and landscaping, including the provision of topsoil, lawn seeding and hedge cutting. We cover all areas of Donegal, Sligo and Leitrim. We are delighted to undertake work for individuals, contractors and public bodies, for which we offer no-obligation quotes. So no matter how big or small your project we are here to assist.

Site Clearance

There are several phases throughout your building project, where we can bring our expertise to bear. The first being the clearance of your site. We clear sites of all obstacles and hazards, leaving it in a safe condition, with due consideration to environmental factors.

site foundations


Building foundations can sometimes be the most perilous part of a structure building. With the site squared we are happy to work off "dig of centre" lines or "between both side" trenches. We leave your foundations in the tidiest possible condition with ease of access for concrete pouring vehicles.


Every building needs a system to deal with its wastewater. We have years of experience in preparing trenches and percolation areas for this purpose and in accordance with Environmental Protection Agency guidelines.


Septic Tanks

We install septic tanks in new builds and upgrade existing tanks. In combination with percolation area preparation and drainage systems, you are assured of trouble free septic tank operation.


When it comes to your landscaping needs, we have vast experience in providing topsoil and seeding lawns both in domestic and commercial settings. We can screen soil to remove large rocks, sods and large roots. We welcome enquiries from largescale contractors, public bodies and the general public.