Basement Excavation & Construction Contractors

We Specialise in Basement Construction

Whether you're a homeowner looking to create additional living space or a developer seeking a trusted basement construction contractor, choosing the right specialist is essential.

McGrath Civils has over 30 years' experience delivering basement excavation and construction projects across London, the Home Counties and the South of England. From luxury residential basements and architect-designed homes to larger residential developments, we provide safe, efficient and technically robust basement solutions tailored to each project.

We also work on behalf of builders, developers and principal contractors, providing specialist basement excavation and reinforced concrete construction services as a trusted subcontractor on residential developments of all sizes.

Our experienced team is always happy to discuss your project, review your drawings and provide a free, no-obligation consultation and quotation. If you're planning a new basement or would like to explore the options available, we'd be delighted to hear from you.

Call and speak with our MD, Sean McGrath on 07717 014006, or email your project details and any available plans to info@mcgrathcivilsltd.co.uk and a member of the team will be pleased to assist you. We offer free and no-obligation initial consultations as standard.

The Growing Popularity of Basement Conversions

With property prices remaining high across London and the South of England, many homeowners are choosing to maximise the space they already have rather than move house. The cost of stamp duty, estate agency fees and legal costs means basement construction has become an increasingly attractive way to create valuable additional living space while enhancing the long-term value of a property.

Over the past 30 years, McGrath Civils has delivered basement excavation and construction projects across London and the Home Counties, recently working in locations including the Surrey Hills, Virginia Water, Barnet, Cambridge, Hastings, Oxford, Sevenoaks and Brighton. Our clients have transformed their homes with stunning new spaces including open-plan kitchen and dining areas, home cinemas, games rooms, home offices and additional family accommodation.

Whether you're planning a substantial multi-level basement beneath a luxury home or a smaller garden basement extension, our experienced team has the expertise to deliver your project safely, efficiently and to the highest standards.

To see examples of our recent basement construction projects, view our recent work section of the site. 

How We Deliver Successful Basement Projects

Every basement project presents its own unique challenges. From restricted access sites and difficult ground conditions to complex structural designs and neighbouring properties, successful basement construction requires careful planning, technical expertise and experienced delivery.

McGrath Civils provides a comprehensive range of basement excavation and construction services, working alongside homeowners, architects, structural engineers, developers and principal contractors to deliver high-quality basement projects across London and the Home Counties.

Our specialist basement services include:

• Reviewing drawings and advising on build methodology, programme and construction sequencing
• Site clearance, demolition and bulk excavation
• Temporary works and basement excavation
• Piling, foundations and ground stabilisation
• Reinforced concrete basement structures
• Waterproof basement construction
• Drainage installation, service diversions and utility connections
• Tunnelling for drainage, water, electricity and communications
• External groundworks and finishing works

No two basements are ever the same, which is why choosing an experienced basement contractor is so important. With over 30 years' experience delivering technically demanding groundworks and reinforced concrete structures, McGrath Civils has the knowledge, resources and practical expertise to deliver your basement project safely, efficiently and to the highest standards.

If you're planning a new basement and would like to discuss your project, we'd be delighted to help. Contact our team today for a free, no-obligation consultation, where we'll review your plans, discuss the most suitable construction approach and provide a competitive quotation tailored to your project.

Planning a Basement Project?

If you're in the early stages of planning a new basement or are already working alongside architects, structural engineers or project managers, we'd be delighted to discuss your project on a no-obligation basis.

From our London base, McGrath Civils has over 30 years' experience delivering high-quality basement excavation and construction projects for private homeowners, property developers, self-builders and principal contractors throughout London, the Home Counties and the South of England.

We take great pride in our work, and delivering technically demanding basement projects safely, efficiently and to the highest standards. By working collaboratively with homeowners and construction professionals from the earliest stages of a project, we help ensure every basement is delivered on time, on budget and built to last.

Whether your project is located in Greater London, Surrey, Sussex, Kent, Hertfordshire, Buckinghamshire, Berkshire, Oxfordshire or elsewhere within the Home Counties, our experienced team would be pleased to provide expert advice and a competitive, no-obligation quotation. We also undertake selected projects further afield where the scope of works is appropriate.

Call and speak with our MD, Sean McGrath on 07717 014006, or email your project details and any available plans to info@mcgrathcivilsltd.co.uk and a member of the team will be pleased to assist you. We offer free and no-obligation initial consultations as standard.