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Steel reinforcement fixed ready for a concrete pour

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About C&M Developments

The development side of C&M Jones Groundworks Limited, a Mountain Ash contractor with more than 50 years of combined experience below ground.

Why a groundworks contractor builds homes.

C&M Jones Groundworks has spent its working life on the hardest part of building in the Valleys: the ground. Drainage and sewer infrastructure, foundations, reinforced concrete and retaining structures, for housing associations, contractors and private clients across South Wales.

C&M Developments exists so that the same experience can carry a site all the way. Instead of getting a scheme out of the ground and handing it on, we take it from the first site walk to finished homes, with one team and one point of contact.

C&M Developments is a trading name of C&M Jones Groundworks Limited. Same company, same people, same accreditations.

Visit C&M Jones Groundworks
Company
C&M Jones Groundworks Limited
Company number
12493193
Based in
Mountain Ash, Rhondda Cynon Taf
Managing Director
Marcus Jones

How we work

  • We price the ground because we dig it

    The ground is where Valleys schemes run over. Our estimates for it come from the team that does the work, not from a desk.

  • One team, one point of contact

    From the first conversation to the keys, you deal with the same people. Nothing is lost between contractors.

  • Accredited for public-sector work

    CHAS accredited, with CSCS, CPCS and Street Works certification, and approved to install Platipus earth anchoring systems.

“C&M Jones has consistently demonstrated professionalism, reliability, and a diligent approach to all aspects of their work.”

Tai Calon Community Housing, Contractor reference
£700k+ of retaining and anchoring work delivered on Tai Calon estates
  • CHAS accredited
  • CSCS
  • CPCS
  • Street Works Qualifications Register
  • Confined Space trained
  • Platipus Earth Anchoring Systems
  • Wessex Water, YTL Group

Get in touch

Got land, or a scheme that needs delivering? Tell us about the site and we will arrange a call, then meet you there to walk it together.

Tai Calon Community Housing

“C&M Jones has consistently demonstrated professionalism, reliability, and a diligent approach to all aspects of their work.”

Tai Calon Community Housing

CHAS accredited · Approved Platipus installer

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