Rated 5 Stars on Google

Whether you're delivering a commercial development, infrastructure project or specialist private build, C&M Jones provides the structural civil engineering expertise to get it built safely, on time and to specification.
Based in Mountain Ash, we work with developers, principal contractors and engineers across South Wales — delivering reinforced concrete works, retaining structures, sheet piling, formwork and the technical civil elements that demand a contractor who knows what they're doing.
With over 50 years of combined experience and full CHAS accreditation, every structure we install is engineered for long-term performance and built to current standards.

We undertake a full range of structural civil engineering works, specified to suit the load requirements, ground conditions and design intent of your project.
Reinforced concrete slabs — for industrial floors, plant bases and structural decks
Reinforced concrete ground beams — for foundations and load-bearing structures
Retaining walls — reinforced concrete, masonry and engineered retaining structures
Gabion walls — for slope retention, erosion control and architectural finishes
Formwork & shuttering — bespoke setups for in-situ concrete works
Sheet piling — for excavation support, retaining structures and ground stabilisation
Pump stations & separators — including installation and connection works

We undertake a full range of structural civil engineering works, specified to suit the load requirements, ground conditions and design intent of your project.
Reinforced concrete slabs — for industrial floors, plant bases and structural decks
Reinforced concrete ground beams — for foundations and load-bearing structures
Retaining walls — reinforced concrete, masonry and engineered retaining structures
Gabion walls — for slope retention, erosion control and architectural finishes
Formwork & shuttering — bespoke setups for in-situ concrete works
Sheet piling — for excavation support, retaining structures and ground stabilisation
Pump stations & separators — including installation and connection works
Civil engineering structures don't tolerate shortcuts. A retaining wall that fails, a slab that cracks, or formwork that's out of tolerance can compromise an entire project — costing time, money and reputation.
That's why every structure we deliver is built strictly to engineer's specification, with the right reinforcement, concrete grade and finish for the job. We work directly from drawings, manage our own pours, and coordinate with your structural engineer at every stage.
From single retaining walls on private developments to multi-element structural packages on commercial sites, we bring the equipment, expertise and accreditations to deliver works that pass inspection first time.


Civil engineering structures don't tolerate shortcuts. A retaining wall that fails, a slab that cracks, or formwork that's out of tolerance can compromise an entire project — costing time, money and reputation.
That's why every structure we deliver is built strictly to engineer's specification, with the right reinforcement, concrete grade and finish for the job. We work directly from drawings, manage our own pours, and coordinate with your structural engineer at every stage.
From single retaining walls on private developments to multi-element structural packages on commercial sites, we bring the equipment, expertise and accreditations to deliver works that pass inspection first time.
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Contact us today for a free, no-obligation quote today
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