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A timber-frame new-build home under scaffolding

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What we do

Land and housing development across South Wales, from the first site walk to handover, delivered by one team.

A developer that does its own groundworks.

Most developments pass through several hands before anyone moves in: a groundworker to get it out of the ground, a builder to put the homes up, and someone in the middle trying to keep them talking. Every handover is a place for time and money to leak.

C&M Developments does it with one team. We are the development side of C&M Jones Groundworks, so the people who price and prepare the ground are the same people who build and hand over the homes.

How a scheme runs with us

Every stage is carried out by the same people, so nothing gets lost between contractors.

  1. First things first

    Get in touch and walk the site

    Tell us where the land is and what you have in mind, even if that is only a rough idea. We will talk it through, then meet you on site. Walking the ground together is where the important questions get answered: access, levels, drainage, what is next door and what the site could realistically take.

    Get in touch
  2. Prove the ground

    Before anyone commits money, we look hard at what is under the surface. Levels, drainage routes, existing retaining walls and ground stability are assessed and priced, because on a Valleys site that is where the real cost sits. You see the groundworks clearly before the scheme goes any further.

    Excavator digging a drainage trench on a cleared site
  3. Get it out of the ground

    Our own groundworks team carries out the enabling works: site clearance, foundations, drainage and sewer connections, roads and services, and any retaining or anchoring the site needs. It is the work C&M Jones has done for more than 50 years combined, so it is priced and programmed by the people who do it.

    Steel reinforcement laid for a concrete raft foundation
  4. Build

    The homes go up on ground our own team prepared, so there is no handover between a groundworker and a builder for problems to fall through. The same team takes the build from the frame to the roof and the finishes.

    A timber-frame new-build home under scaffolding
  5. Hand over

    Finished, signed off and handed over. From the first site walk to the keys, you deal with the same people the whole way through.

    A finished new-build home with a landscaped garden

Who we work with

  • Landowners

    You have a plot or a field that is doing nothing. We look at what it can take and can deliver it as finished homes, without you managing a single contractor.

  • Housing associations and councils

    An accredited partner already trusted on social housing estates in the Valleys, from retaining walls to new homes.

  • Investors and partners

    A delivery team that prices the ground because it digs the ground, so the biggest unknown on a Valleys site is handled first.

Excavation for foundations on a sloping site beside a new house

Valleys sites are won or lost in the ground.

Steep plots, old retaining walls and wet ground are where schemes in the Valleys tend to run over time and budget. It is also where our team has spent its working life. As approved Platipus installers we can often stabilise a failing wall instead of rebuilding it, an approach Tai Calon says saved them tens of thousands of pounds.

  • More than 50 years combined experience below ground
  • Approved Platipus earth anchoring installers
  • CHAS accredited, with CSCS, CPCS and Street Works certification

“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

Questions about working with us

Yes. C&M Jones has worked with Tai Calon Community Housing for several years on retaining wall and anchoring projects across Blaenau Gwent, and we welcome enquiries from other housing providers and local authorities.

Yes. Send us the address or a plan and we will talk it through, then walk the site with you and give you a straight answer on what it can take and how we would deliver it.

Yes. Our schemes are built on groundworks carried out by our own team at C&M Jones Groundworks, from drainage and foundations to retaining walls and roads.

C&M Developments is a trading name of C&M Jones Groundworks Limited, company number 12493193. Same company, same team, same accreditations.

Yes. Steep plots, retaining walls and awkward ground are where our team has spent its working life. As approved Platipus installers we can often stabilise an existing wall rather than rebuild it.

South Wales, from our base in Mountain Ash. Our work so far has been in Rhondda Cynon Taf, Caerphilly and Blaenau Gwent, and we take on sites further afield including Cardiff, Newport and Swansea.

Not through C&M Developments. For groundworks on a single property, our sister business C&M Jones Groundworks can help: visit cmjones.co.uk.

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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