5 Star Customer Service
Unbeatable Craftsmanship
Fully Insured & Qualified
5 Star Customer Service
Civil Engineering & Groundworks Contractors in South Wales
Based in Mountain Ash, we deliver drainage, foundations, reinforced concrete and infrastructure works across Rhondda Cynon Taf and South Wales for commercial and selected private projects.
Accreditations & Qualifications
Our Services
Civil Engineering Structures
Reinforced concrete slabs, ground beams, retaining walls, gabions and formwork, including pump stations, separators and sheet piling.
Drainage & Sewer Infrastructure
Main sewer installation, manholes, sewer connections and house drainage including SUDS and compliant development drainage systems.
Foundations & Site Groundworks
Utilities installation, foundations, retaining walls, screen walls and full site preparation for developments and extensions.
Roads, Driveways & External Works
Access roads, hard standings, tarmac and block paving driveways along with patios, shed bases and finishing groundworks.
Ground Stabilisation & Anchoring
Approved installers of the Platipus ground anchor system for slope stabilisation and structural ground reinforcement.
Environmental & Specialist Works
Pond lining installation, bypass separators and specialist civil engineering elements for infrastructure and environmental projects.
Why Choose Us
Experienced Contractors
Over 50 years combined experience across civil engineering and groundworks.
Accredited & Compliant
CHAS accredited with Streetworks, confined spaces and safety certifications.
Commercial & Private Projects
Working with developers, contractors and private clients across South Wales.
Safety-First Approach
Fully trained in confined spaces and asbestos awareness with strict site safety procedures.
Specialist Installation Methods
From reinforced concrete to stabilisation systems and drainage infrastructure.
Professional & Reliable Delivery
Clear communication and dependable project completion from start to finish.
Why Choose Us
Experienced Contractors
Over 50 years combined experience across civil engineering and groundworks.
Accredited & Compliant
CHAS accredited with Streetworks, confined spaces and safety certifications.
Commercial & Private Projects
Working with developers, contractors and private clients across South Wales.
Safety-First Approach
Fully trained in confined spaces and asbestos awareness with strict site safety procedures.
Specialist Installation Methods
From reinforced concrete to stabilisation systems and drainage infrastructure.
Professional & Reliable Delivery
Clear communication and dependable project completion from start to finish.
How It Works
01
Request a Free
Quote
Get in touch for a no-obligation quote — We will arrange a quick call or site visit to undend the project needs
02
Site Assessment & Quotation
You’ll get a clear, upfront quote tailored to your project and timeline.
03
Project Delivery
We'll carry out the work efficiently and professionally — and we’re here for any aftercare.
Ready to discuss your project?
Contact us today for a professional quotation.
Groundworks & Civil Engineering Specialists
C&M Jones Groundworks is a family-run contractor based in Mountain Ash, delivering reliable groundwork and civil engineering services throughout South Wales.
With over 50 years combined experience, we specialise in drainage infrastructure, reinforced concrete and site preparation for commercial developments, infrastructure projects and selected private works.
We currently operate across domestic and commercial sectors and continue expanding into industrial and energy infrastructure projects.
Our experience in structural concrete, drainage and stabilisation allows us to undertake technically demanding projects safely and efficiently.
Recent Projects
A selection of drainage, concrete and groundwork projects completed across South Wales including sewer infrastructure, retaining structures and development preparation works.
Our Reviews
Here’s what some of our customers are saying about us…
Groundworks and civil engineering contractors serving Rhondda Cynon Taf and South Wales. Reliable. Accredited. Experienced.
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