Property Renovations in Cardiff & South Wales
At Mark James Building Contractors Ltd, we specialise in high-quality property renovations for homeowners across Cardiff and the surrounding areas.
Whether you’re planning a full house renovation, structural alterations, or modernising an older property, our experienced team delivers clear communication, professional workmanship and reliable project management from start to finish.
We work within roughly a 1-hour radius of Cardiff, handling renovation projects of all sizes — from internal reconfigurations to complete property transformations.
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Our Property Renovation Services
Full House Renovations
Ideal for homeowners looking to modernise an entire property, improve layout, or add long-term value.
Structural Alterations
Including:
Removal of load-bearing walls
Installation of steel beams (RSJs)
Open-plan living layouts
All structural work is completed in line with Building Regulations and structural engineer specifications.
Internal Remodelling
Reconfiguring spaces to suit modern living, including:
open-plan kitchens
improved flow between rooms
better use of space and light
Renovations to Older Properties
We have experience working on older and character properties across Cardiff and South Wales, ensuring modern upgrades are delivered while respecting the existing structure
Our Renovation Process
Initial Consultation
We visit your property to discuss your plans, assess the structure and understand your goals.
Planning & Preparation
We work alongside architects, designers and structural engineers where required to ensure everything is planned correctly before work begins.
Clear Quotation
You’ll receive a detailed quotation outlining the scope of works, inclusions and any exclusions — no guesswork
Construction Phase
Our team manages the renovation from start to finish, coordinating all trades and maintaining clear communication throughout.
Completion & Sign-Off
Final inspections, snagging and handover are completed to ensure the project meets expectations.
Areas We Cover
We carry out property renovation projects across:
Cardiff
Penarth
Barry
Caerphilly
Newport
Bridgend
Pontypridd
And surrounding areas within approximately 1 hour of Cardiff
Why Choose Mark James Building Contractors Ltd?
Experienced renovation specialists
Fully insured and professionally managed
Transparent pricing and staged payments
High standards of workmanship
Clear communication throughout the project
Trusted local builders in Cardiff & South Wales
Frequently Asked Questions – Property Renovations
Here are some common questions about our company.
Costs vary depending on the size of the property, structural work required and level of finish. We provide a detailed quotation following a site visit.
Yes — most renovation projects involving structural work or layout changes require Building Regulations approval.
In some cases, yes. This depends on the scope of work. We’ll advise you during the planning stage.
Yes — we manage all required trades including structural work, plumbing, electrics, plastering and finishes.