
Cardiff — CF15
Bespoke home builders in Pentyrch
Bespoke homes, Rural plots — delivered by one accountable team from our Blackwood base. Bespoke, from the ground up.
Building in Pentyrch
Bespoke homes in Pentyrch and the surrounding CF15 area
Pentyrch sits beneath the Garth with a genuinely rural feel despite its Cardiff postcode, and the plots around the village suit individual homes designed for views and privacy. Jac Jones Construction serves Pentyrch and the surrounding CF15 areas with bespoke home construction — one team taking a project from a rural plot and an idea through to a finished, handover-ready home.
Rural plots around Pentyrch live or die by their groundwork: sloping ground, spring water and long service runs are the norm, not the exception. Our groundworks division handles all of it in-house, so the engineering beneath a Pentyrch home is designed and built by the same company that finishes the kitchen.
- Area served
- Pentyrch and surrounding CF15
- Region
- Cardiff
- Focus
- Bespoke homes, Rural plots
- Based
- Blackwood, Caerphilly — on site daily
Bespoke homes
From a plot and an idea, or drawings ready to build.
Every bespoke home we build is designed around the people who will live in it, and Pentyrch projects are no different. Some clients arrive with full planning and a complete drawing package; others have a plot and a rough idea. Both are normal starting points for us. What stays constant is one accountable team: design-and-build support where it is needed, in-house groundworks beneath the build, and a finish standard set by the homes we have built for ourselves.

Groundworks & civils
In-house, on our own plant.
The part of a project most likely to go wrong is the part in the ground. Because our groundworks and civils capability is in-house — excavators, dumpers, rollers and the people to run them — Pentyrch projects get foundations, drainage, reinforced concrete and retaining structures built by the same company accountable for everything above them.

Project evidence
Relevant projects near Pentyrch
Real projects in their true locations — where work is in a neighbouring area, we say so.
One line of responsibility
From an idea to the keys.
Concept, design, planning, engineering, groundworks, structure, build, internals, external works, handover — one accountable company throughout.
01
Idea or plot
A site, a sketch, or nothing more than an intention.
02
Design
Architects who work the way you want to live.
03
Planning & consultants
Applications, SAB, drainage, energy assessment.
04
Engineering
Structural design resolved before anyone breaks ground.
05
Groundworks
Our own team, our own plant, in the ground.
06
Construction
Trades we have worked with for years.
07
Completion
Snagged, handed over, and stood behind.
Why Jac Jones Construction
Built like a business we still own.
Established 2013
A decade-plus building homes, pools and groundworks across South Wales — still founder-led, still family-run.
Contractor and developer
We have funded, built and sold our own developments. We understand cost, risk and finish from the client's side of the table.
In-house groundworks
Our own operators and plant, from small excavators for tight gardens to 8-tonne machines. The ground is never someone else's problem.
Trusted network
Architects, structural engineers, planning consultants and trades we have worked with for years — introduced where your project needs them.
Nearby
We also work around Pentyrch
Common questions
Questions about building in Pentyrch
- Do you build bespoke new homes in Pentyrch?
- Yes. We serve Pentyrch and the surrounding CF15 area from our base in Blackwood, delivering complete bespoke homes from an idea and a plot, or from a finished drawing package. Groundworks, structure, internals and external works are all handled by one accountable team.
- Can Jac Jones Construction manage a project from design through to completion?
- Yes — design and build is a core part of how we work. We can introduce trusted architects, structural engineers, planning consultants, SAP assessors and drainage specialists, then manage the project through planning, engineering and construction to handover. If you already have a design team, we work alongside them.
- Can you undertake the groundworks as well as the house build?
- Groundworks are delivered in-house on our own plant — excavation, foundations, reinforced concrete, retaining structures, drainage and external works. On constrained or sloping sites around Pentyrch this is often the difference between a smooth build and an expensive one.
- What information do you need to price a bespoke new build?
- Ideally a drawing package, but a plot and a clear idea are enough to start a sensible conversation. We will tell you honestly what stage the project is really at, what it is likely to involve and what we would need to give you a properly itemised price.
- Do you undertake SAB and drainage works as part of a new build?
- Yes. Surface-water drainage for new builds in Wales requires SAB approval, and SuDS features are designed into our schemes from the start. Our groundworks division builds the drainage and attenuation infrastructure as part of the normal package.
- Which surrounding areas do you cover?
- Alongside Pentyrch, we regularly work across Creigiau, Radyr, Pontyclun and Whitchurch and the wider South Wales region. Exceptional projects further afield — including Bristol and West Wales — are considered on their merits.
- How early should I contact you before I want construction to begin?
- Earlier than most people think. A conversation at plot-or-idea stage lets us flag ground, access, drainage and budget realities while they are still cheap to solve — but we are equally happy to be brought in with completed drawings ready to price.
Start here
Planning a project in Pentyrch?
Tell us what you are planning in Pentyrch or the surrounding CF15 area — it takes about two minutes and there is no budget interrogation.
Would rather talk it through? Call 07446 832296

