For any developer or main contractor, the groundworks package is where a scheme either builds momentum or starts losing it. Get the substructure away cleanly and the rest of the programme follows; get it wrong and every trade behind you inherits the delay. Across Surrey and Sussex – from Crawley and Horsham to East Grinstead, Haywards Heath and the Gatwick corridor – ground conditions, tree cover and drainage constraints make the journey from a cleared plot to damp-proof course (DPC) one of the most technically demanding phases of a residential build.
This guide sets out what a groundworks-to-DPC package actually involves, what it should cost, and what developers should expect from an in-house contractor who can carry the work from muckaway through to substructure brickwork without handing off between trades.
What “groundworks to DPC” actually covers
“Groundworks to DPC” is shorthand for everything that happens below the damp-proof course – the point at which the substructure is complete and ground-floor superstructure can begin. On a typical new build plot in Surrey or Sussex, the package runs through a defined sequence:
- Site setup and earthworks – securing the site under CDM 2015, stripping topsoil, reducing levels and removing spoil (muckaway). Land first has to be made good before any structural work can start.
- Foundation excavation – strip, trench-fill or deep-strip foundations dug to the engineer’s design depth, which is heavily influenced by soil type and proximity to trees.
- Concrete works – foundation pours, oversite concrete and, where specified, beam-and-block floors.
- Below-ground drainage and services – foul and surface-water runs, inspection chambers, ducting and service trenches for utility connections.
- Substructure brickwork – blockwork and facing brick up to DPC, ready for the superstructure to take over.
Because these elements are sequential and interdependent, developers increasingly favour a single contractor who delivers both groundworks and substructure brickwork in-house. Removing the handover between separate groundwork and bricklaying subcontractors cuts interface risk and keeps the programme tight – the core reason MLS Contractors provides both disciplines under one team.
The five stages of a new build groundworks programme
Industry guidance from established groundworks specialists breaks a development down into roughly five stages: site investigation and enabling works, earthworks and muckaway, foundations and substructure, below-ground drainage and infrastructure, and finally external works and hard landscaping once the superstructure is up. The groundworks-to-DPC package concentrates on the first three to four of these stages.
The opening move on any site is a thorough survey and assessment – evaluating topography, soil conditions, existing structures and vegetation. In the wealden clay belt that runs through much of Sussex and parts of Surrey, that soil assessment is decisive: it drives foundation depth, heave precautions and, ultimately, the cost per plot.
What groundworks cost a developer in the South East
Foundations and groundworks typically account for 10-15% of total build cost on a new home, although poor soil, a high water table or made ground can push that figure well beyond initial projections. As a rule of thumb for budgeting:
- Strip foundations commonly run £130-£200 per linear metre for a foundation around 1m deep.
- General groundwork and foundation preparation averages roughly £188 per square metre, with medium projects ranging from about £95 to £280+ per m².
- A typical three-bedroom house often falls in the £10,000-£18,000 range for groundworks, depending on perimeter length and ground conditions.
Developers should also factor in a regional premium: labour rates in London and the South East run up to 20% higher than the national average. The single biggest variable, though, is ground condition – clay near mature trees can force foundation depths of 2.5m or more, transforming the excavation, spoil and concrete volumes on a plot. Budgeting from a proper site investigation, rather than a per-square-metre average, is what protects a development’s margin.
Programme: where groundworks can make or break a schedule
For a single home, the full build typically takes 7-12 months, with a full phase of a larger development running around a year and major estates spanning several years. Groundworks sit on the critical path at the very start, so any slippage compounds. The most common causes of delay in the South East are predictable and manageable: unexpected ground conditions, drainage approvals, tree-related foundation redesigns and weather windows for concrete pours. A contractor who self-delivers groundworks and substructure brickwork can compress these stages and absorb minor reworks without waiting on a separate trade to return to site.
Why developers in Surrey & Sussex choose an in-house team
The local market is crowded with capable groundwork firms, but most specialise in one discipline. The advantage of an in-house groundworks-and-brickwork provider is continuity: one team, one point of accountability, and no gap between the groundworker leaving and the bricklayer arriving. For developers managing multiple plots or phased releases around Crawley, Horsham, Gatwick and the wider Surrey-Sussex border, that continuity is what keeps a programme honest.
MLS Contractors is a CHAS-accredited groundworks and brickwork contractor with 20+ years’ experience, delivering labour-only or fully inclusive packages – including materials procurement – to developers and main contractors across the region. Explore our groundworks and brickworks services, or request a fixed package quote for your next site.
Sources & further reading
- Mackoy Groundworks – The 5 stages in any new development
- NR Groundworks – Groundworks to DPC (including brickwork)
- Tradesmen Costs – Laying Foundations & Groundworks Cost: 2025 Price Guide UK
- MAM Contracting – The Essential Checklist for New Build Groundworks
Explore our groundworks contractors Surrey service, or get in touch to request a fixed-package quote for your next site.