About McGrath Civils Ltd
McGrath Civils delivers groundworks, reinforced concrete and basement construction for commercial, residential and infrastructure projects across London, the South East and the Home Counties. Its work also includes enabling works, foundations, piling, drainage, ICF construction, site preparation and sea and coastal defence.
The company works with private homeowners, developers, architects, local authorities, principal contractors and project managers. Residential work includes high-end homes, one-off self-builds, basement developments and multi-unit schemes; commercial work ranges from office and industrial projects to infrastructure and mixed-use developments.
Founded by Sean McGrath, the company reports more than 30 years of experience. It acts as a principal contractor or specialist subcontractor, with project values stated from £100,000 to £5 million. The company says it is fully insured, its work is guaranteed, and it holds Constructionline Gold, SSIP and Acclaim accreditations. New enquiries can request a site visit and price estimate.
Accreditations
- Constructionline Gold
- SSIP
- Acclaim
Areas covered
- London
- Bedfordshire
- Surrey
- Sussex
- Hertfordshire
- Essex
- Oxfordshire
- Kent
- Buckinghamshire
Services
Groundworks and site preparation
- Groundworks
- Enabling works
- Site preparation
- Site clearance
- Demolition
- Foundations and footings
- Piling
- Drainage systems
- Road preparation
- Service infrastructure
- External works
Basements and concrete
- Basement excavation and construction
- Basement construction
- Reinforced concrete works
- Retaining walls
- Formworks
- ICF construction
- Structural steel superstructures
Specialist construction
- Swimming pool construction
- Sea and coastal defence
- Passivhaus construction
- EV related groundworks
What their website says about each service
- Basement Conversions
“We deliver specialist residential groundworks, RC structures and basement construction for high-end homes, one-off builds and multi-unit developments.”
- Builders
“We act as a main contractor or specialist subcontractor and have the expertise, resource, and track record to work on contracts up to £5m.”
- Foundations & Groundworks
“We are specialist groundworks and reinforced concrete contractors delivering high-quality construction packages across commercial, residential and infrastructure sectors.”
- RSJ & Structural Steel
“Above ground, we deliver coordinated steel superstructures alongside associated groundworks and external works, supporting a smooth transition from substructure to superstructure.”