Professional Foundation Installation in Sevenoaks Serving Kent & the South East

When you need solid foundations you can trust to stand the test of time, South East Groundworks Ltd is ready to help. Based in Sevenoaks and working throughout Kent, Surrey, Sussex, Essex and Hertfordshire, we’re trusted by commercial developers and larger domestic clients to get the foundations right — every time.

With over 100 years of combined experience, our qualified teams handle all types of foundation installation, including the necessary excavation and drainage work. We plan every job carefully, use proven methods and high-quality materials, and remove all site waste safely under our Waste Carrier Licence.

Why Sound Foundations Matter

A safe, reliable structure starts below ground level. Poorly built foundations put an entire building at risk, creating costly structural problems and real safety concerns for years to come. Our foundation contractors understand the importance of getting it right — we assess your site’s soil conditions, slope, and structural demands to ensure your project is built on rock-solid ground.

Our Foundation Services

No two sites are the same, so we offer a range of foundation options to suit your project’s unique conditions and budget. Here’s what you can expect when you work with us.

Strip Foundations

Strip foundations are the most common choice for domestic properties in the UK. We dig trenches to standard depths of around 1,000mm and up to 3,500mm where needed, before pouring concrete to create a continuous strip around the outline of your building.

Our team carefully assesses your soil type to determine the right depth and concrete thickness. If your site is sloped, we install stepped foundations to keep everything level. This approach spreads the load effectively on softer soils and provides the sturdy base your build needs.

Trench Fill Foundations

Trench fill foundations are a practical option for many commercial and self-build projects. Unlike traditional strip foundations, this method reduces the need for brickwork below ground. We dig deep trenches — typically up to 3,500mm — and pour concrete to within 1,000mm of ground level.

This approach is ideal for sites with chalk or clay soil, where the trench sides hold firm. It saves valuable build time and creates a strong, lasting foundation with less labour.

Piled Foundations

For sites with weak or waterlogged ground, piled foundations offer a secure solution. We drive vertical piles deep into the ground, then fill them with concrete to transfer the load of your structure to more stable subsoil layers.

This method is especially useful for sites near rivers, marshy areas, or places with loose soil that cannot support traditional foundations. Our team plans and executes every pile installation with precision to keep your build safe and compliant.

Raft Foundations

Raft foundations “float” over a larger area, spreading the load where soil conditions are less stable. If you’re building on flood-prone land or softer ground, a raft foundation helps prevent settling and cracking that could otherwise damage your property.

We pour a reinforced concrete slab across the entire footprint of your building, providing a stable, unified base that handles ground movement and poor drainage better than isolated footings.

Where We Work

Based in Sevenoaks, South East Groundworks Ltd installs strong, reliable foundations for projects throughout Kent and across the wider South East. Our teams regularly support developers and homeowners in places like Bromley, Croydon, Dartford, East Grinstead, Maidstone, Orpington, Oxted, Tonbridge, Tunbridge Wells and neighbouring towns.

Wherever you’re building — from suburban sites to larger commercial plots — you can count on us for straightforward advice, site-specific planning and foundations that stand the test of time.

Why Builders Trust South East Groundworks Ltd

Established local groundwork experts with 100+ years of combined experience
CHAS and Constructionline accredited for safe working practices
Licensed Waste Carrier — all spoil removed safely and legally
Managed Health & Safety with full RAMS provided for every project
In-house Quantity Surveyor for clear, upfront pricing
Specialist foundation teams trained in the latest industry standards

What Our Clients Say

Get Your Foundations Right - First Time

If you’re planning a new build or an extension, don’t cut corners on your foundations. Speak to our friendly team today for a free, no-obligation site visit or desktop quote.

Contact Us

Contact South East Groundworks on 01342 659995 for groundwork contractors in Sevenoaks, Dartford and the surrounding areas.