Mini excavator digging a pool excavation in a Surrey garden

Groundworks Services in Surrey: Site Preparation, Foundations & Drainage

The work that happens before anything visible is built. Done right it's invisible. Done wrong, everything on top fails. Groundworks is where Carmen Landscapes starts every project.

Why groundworks comes first

Groundworks is the discipline that determines whether a project holds together over time. Before paving is laid, a pool is built or a garden structure is erected, the ground needs to be prepared correctly: excavated to the right depth, compacted, drained and formed to the finished levels. Surface water drainage in England is subject to the national standards for sustainable drainage systems (SuDS), which we work to on every project. Skip this stage or rush it and you'll see the results within a few years: cracking paving, sinking surfaces, structure movement.

Carmen Landscapes carries out groundworks construction on its own projects and as standalone contracts — groundwork landscaping for garden builds, and groundwork construction for pools, foundations and hard landscaping. Craig Carmen has 21 years of hands-on experience with site preparation across Surrey's varied ground conditions, including clay soils, sloped gardens, tight access and projects that require concrete formwork and engineered bases.

Groundworks in progress with drainage runs and compacted sub-base in SurreyBlock and brick retaining wall under construction with drainage in Surrey

What our groundworks service covers

  • • Site survey and level setting
  • • Excavation and muck-away
  • • Sub-base preparation and compaction
  • • Concrete foundations and formwork
  • • Surface water drainage and soakaways
  • • Channel drains and drainage runs
  • • Retaining walls and cut-and-fill on sloped sites
  • • Ground preparation for swimming pools and ponds
  • • Blinding layers for pool and structural concrete

Groundworks for swimming pools and ponds

Pool and pond construction starts with the most demanding groundworks of any domestic project. Excavation needs to be precise, the base needs engineered concrete and the drainage around the structure is critical for long-term performance. This is work Carmen Landscapes has carried out repeatedly on projects across Surrey. See the pool build case study for a detailed walkthrough, and read what homeowners say on our reviews page.

Where do you carry out groundworks?

We're based in Walton-on-Thames and work across North Surrey and the wider Surrey area. Groundworks and site preparation in Walton-on-Thames, Weybridge, Hersham, Esher, East Molesey, Cobham, Shepperton, Sunbury-on-Thames, Hampton, Kingston upon Thames, Leatherhead and Woking.

Ground conditions vary across the area — heavy clay in places, made ground in others, plenty of sloped and tight-access gardens. We set levels and drainage to suit the site, not to a standard detail. If you're looking for groundworks contractors in Surrey, describe the site and we'll come and look at it.

Frequently Asked Questions

What does groundworks actually include?

Groundworks covers everything below and at ground level before visible construction starts: site clearance, excavation, sub-base preparation, concrete foundations, formwork, drainage installation and levels. It's the foundation that everything else sits on.

Why does good groundworks matter so much?

Paving that cracks, patios that sink, pools that move: these almost always trace back to poor groundworks. Getting the sub-base, drainage and levels right at the start is the difference between a project that lasts and one that needs remedial work.

Can you take on groundworks as a standalone contract?

Yes. We regularly carry out groundworks-only contracts for other trades or for clients who want to manage subsequent work themselves.

Do you handle drainage design and installation?

Yes. Drainage is a core part of our groundworks offering — surface water management, soakaways, channel drains and connection to existing systems where applicable.

What plant and equipment do you use?

We use compact excavators suitable for domestic garden access alongside traditional groundwork tools. The equipment is matched to the access available at each site.

Do you work on sloped or difficult sites?

Yes. Sloped sites requiring cut-and-fill, terracing and retaining structures are a regular part of our work across Surrey.

Ready to start your project?

Describe what you have in mind and we'll come out to take a look, with no obligation.