Expert Groundwork Services Serving The South East
As an experienced drainage contractor serving the South East, we specialise in a wide range of services backed by expert workmanship and transparent pricing. Whether you need a durable concrete base for a garden building, professionally laid building foundations, or reliable support with your groundworks project, our team is here to help. We also handle the maintenance and installation of off-mains systems, including sewage treatment plant installations, septic tank emptying, and cesspit cleaning. From start to finish, we manage every stage with care to ensure long-lasting results.
/ Our Services
Our Groundwork Services & Drainage
Building Foundations
- Every structure depends on a strong, durable base. Our groundworks contractors install:
- Strip foundations
- Trench fill foundations
- Raft foundations
- Pad foundations
- Pile foundations
- Foundation padding
- Our team regularly works across Kent groundworks, Sussex groundworks, and Surrey groundwork projects, providing precision, safety, and compliance on every job.
Concrete Bases
- We design and install concrete bases for sheds, garages, garden rooms, and outbuildings. Each base includes a Type 2 sub-base, damp-proof membrane, and optional insulation for long-lasting performance.
- We also specialise in:
- Concrete base for shed
- Concrete shed base
- Shed base concrete
- Our bases are laser-levelled, reinforced, and completed to a smooth or brushed finish, providing the perfect foundation for your structure.
Site Preparation & Excavation
- Our groundwork contractors in Kent and Surrey provide complete site clearance and excavation services, including:
- Soil grading and levelling
- Ground stabilisation
- Trench and duct installation
- Muck away & waste removal
- We ensure your site is prepared safely, efficiently, and ready for construction — whether it’s groundworks in Ashford Kent or groundworks in East Sussex.
Drainage Solutions
- As a specialist drainage contractor serving Sussex, Surrey, and Kent, CJ Groundworks provides fully compliant drainage installations and repairs. Our services include:
- Foul & surface water drainage
- CCTV drain surveys
- High-pressure drain jetting
- Soakaways & French drains
- Drain repairs & replacements
- We’re trusted drainage contractors in Kent, Surrey, and West Sussex, using modern equipment to ensure smooth flow and prevent flooding or water ingress.
Off-Mains Drainage
Ideal for rural or unconnected sites. Our services include:
Septic tank
installation
Cesspit
installation
Sewage treatment plant systems
/ Our Mission
Why Choose Us for Groundwork Services?
35+ Years of Experience
A long-standing reputation built on expert workmanship.
In-House
Team
No subcontractors; we keep all trades under one roof.
Fully Insured &
Guaranteed
No subcontractors; we keep all trades under one roof.
Compliant &
Certified
All works carried out to UK building regs and environmental standards.
Local
Expertise
Proudly serving Sussex, Surrey & Kent.
/ Our Area
Locations We Cover
CJ Groundworks is based in Barns Green and covers:
- Cranleigh
- Horsham
- Midhurst
- Petworth
- Pulborough
- All surrounding areas in Sussex, Surrey, and Kent
Need Help Choosing
the Right Service?
Every site is different. Call us today on 0788 175 7877 to speak directly with a member of our team.
We’re happy to provide advice, book a site visit, or quote for the work you need.
/ FAQs
Frequently Asked Questions
A groundworks company prepares land for construction. This includes excavation, foundation installation, drainage, and off-mains systems. We handle both residential and commercial groundwork across Kent, Surrey, and Sussex.
Timeframes depend on project size and complexity. A small base can take 1–2 days, while a full foundation and drainage package may take a week or more. We provide clear timelines upfront.
Yes — our groundwork contractors in Kent, Surrey, and Sussex work with homeowners, builders, and developers on everything from garden offices to industrial facilities.
Absolutely. All work is covered by our 2-year workmanship guarantee and manufacturer warranties. We’re also fully insured and compliant with UK regulations.
Yes — we specialise in septic tank installation, cesspit installation, and sewage treatment plant servicing across Kent, Surrey, and East & West Sussex.
/Our Contact
Ready to break ground?
Get in touch with CJ Groundworks today to discuss your project and receive a free, no-obligation quotation. Our team is here to answer your questions and provide expert advice tailored to your needs.
Address
CJ Groundworks, Lower Batchelors, Emms Lane, Barns Green, West Sussex, RH13 0QH.
/Our Testimonials
What clients say about us
/ From the blog
Latest Articles
House Extension: Planning Foundations and Drainage
A house extension can add valuable space and improve how your home functions, but the success of any extension depends heavily on the groundwork beneath it. Foundations and drainage are two of the most critical elements, and getting them right from the start prevents costly issues later. Understanding how these
Soakaway Systems: How They Work and When You Need One
A soakaway is a key drainage solution designed to manage surface water effectively by allowing it to disperse safely into the ground. For many properties, especially in areas without adequate drainage infrastructure, a soakaway provides a reliable way to prevent water build-up and flooding. Understanding how it works and when
Cesspit Emptying: Avoiding Problems with Regular Maintenance
Cesspit emptying is essential for properties that rely on off-mains drainage systems. Unlike septic tanks or treatment plants, cesspits simply collect waste without treating it, meaning they must be emptied regularly to function properly. Failing to manage cesspit emptying correctly can lead to serious problems, including overflow, environmental risks and