Cornerstone Foundations UK piling and groundwork contractors operating heavy excavation machinery on a Berkshire construction site
Matthew 7:24-25 · Built on the Rock
Berkshire · Bucks · Hants · Oxon · Surrey

We build
on the rock.
Not the sand.

Piling, underpinning, basement installation and complete groundworks — engineered to outlast the storm. Fifty years of combined experience beneath every structure we raise across the Home Counties.

Start a Project → Our Capabilities
Experience 50YRS
Counties Covered 5HOME
Base of Operations WOKINGHAM
Direct Line 0118 203 0889
— 01 / The Ground Beneath

Every site has a story written in layers.

Before a single pile is driven, we read the strata. Understanding what lies beneath is the difference between a foundation that endures and one that fails.

0.0m — 0.4m Topsoil & Made Ground Cleared during enabling works
0.4m — 2.0m Sand, Gravel & Clay Shallow foundation territory
2.0m — 8.0m Glacial Till & London Clay Where underpinning begins
8.0m — 20m+ Bedrock · Chalk · Sandstone ▼ Our piles reach here
20m+ Deep Solid Strata The cornerstone. Unmoving.
— 02 / Capabilities

From site enabling to deep basement installation.

Tailored groundwork solutions for domestic and commercial projects. Every service below is delivered by our own experienced team — never subcontracted to strangers.

SVC / 001

Piling &
Restricted Access Piling

When space is tight and access is impossible for conventional rigs, our specialist restricted access piling equipment gets the job done — inside existing buildings, rear gardens, and tight urban plots across Berkshire and beyond.

  • Continuous Flight Auger (CFA) piling
  • Segmental displaced & augered piles
  • Restricted access mini-piling
  • Pile design & load testing
SVC / 002

Foundation
Installation

Complete shallow and deep foundation installation for domestic and commercial structures. From strip and raft foundations to piled rafts, we tailor every pour to the load, the soil, and the structure above.

  • Strip, trenchfill & raft foundations
  • Piled raft & ground beam systems
  • RC foundations & slabs
  • Site-specific engineering collaboration
SVC / 003

Underpinning &
Subsidence Repair

When the ground gives way and cracks appear, our subsidence specialists stabilise existing structures with precision underpinning. We work with structural engineers and insurers to halt movement and restore integrity.

  • Traditional mass concrete underpinning
  • Beam & pile underpinning
  • Subsidence investigation & diagnosis
  • Insurance claim collaboration
SVC / 004

Basement
Installation

Maximise your footprint and unlock value below ground. Our basement installation service covers everything from initial excavation and shoring to waterproof concrete shell construction — engineered for the long term.

  • Basement excavation & shoring
  • Waterproof concrete shells (Type B)
  • Lightwell & drainage integration
  • Retrofit basement schemes
SVC / 005

Bulk Excavation
& Enabling Works

The first move on any site is ours. We handle bulk excavation, site clearance, demolition and enabling works — preparing the ground so the rest of your build can proceed without delay or surprise.

  • Bulk & reduced level excavation
  • Site clearance & demolition
  • Levels, surveys & setting out
  • Muck-away & waste management
SVC / 006

General
Groundworks

The full spectrum of groundwork services that tie a site together — drainage, kerbing, slab prep, external works. One contractor, one point of contact, one team accountable for everything below DPC.

  • Foul & surface water drainage
  • SOAK / attenuation systems
  • External levels & hardstanding
  • Service connections & ducting
"
Everyone who hears these words and puts them into practice is like a wise man who built his house on the rock. The rain came down, the streams rose, and the winds blew and beat against that house; yet it did not fall, because it had its foundation on the rock.
Matthew 7:24–25 · Our namesake, our standard
— 03 / How We Work

Four phases. Zero guesswork.

A methodical, transparent process from first phone call to final inspection. You always know what's happening, what's next, and what it costs.

01

Site Visit & Survey

Paul or Michael visits your site, assesses access, ground conditions and structure. No obligation, no jargon — just an honest read of what you're working with.

02

Design & Quote

We collaborate with your structural engineer (or recommend one) and deliver a fixed, itemised quotation — pile design, methodology, programme and cost.

03

Execution

Our crew mobilises with the right plant for the job. Restricted access or open site, we work clean, we work safe, and we work to programme.

04

Sign-Off

Final inspection, records handed over, site left tidy. We don't disappear after the pour — every Cornerstone project comes with our ongoing support.

— 04 / Coverage

Five counties. One cornerstone.

Based in Wokingham, we mobilise across the South East. If your project sits within these borders, we'll be there.

Berkshire Home · Wokingham, Reading, Newbury, Marlow
Buckinghamshire High Wycombe, Marlow, Aylesbury
Hampshire Fleet, Basingstoke, Winchester
Oxfordshire Oxford, Banbury, Abingdon
Surrey Guildford, Woking, Farnham
— 05 / Get In Touch

Speak direct to the people who'll do the work.

No call centres, no sales reps. When you ring Cornerstone, you ring Michael or Paul — the directors who'll be on your site.

Office · General Enquiries 0118 203 0889
Michael · Director 07436 364091 Site surveys, piling & commercial projects
Paul · Director 07887 836811 Underpinning, basements & technical works
Yard & Head Office 38 Tangley Drive, Wokingham RG41 2NY
— Project Enquiry

Tell us about your build.

Whether you're a homeowner tackling subsidence, an architect specifying piles, or a developer breaking ground — call the office line or either director directly. We respond fast and we don't waste your time.

Call the Office → Call Michael · 07436 364091
📞 Call Office 📞 Michael