Commercial and Domestic Builder in Cardiff | House Extensions and Much More

Here at C James Carpentry & Construction Ltd, our commercial and domestic builders offer a range of building services in the Cardiff area.

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New Build Specialists Near You

A Professional Team of Local Contractors

Welcome to the home page of C James Carpentry & Construction, a Cardiff-based building company transforming homes and businesses across the city. With more than forty years of combined experience across our team, we have a reputation for excellent workmanship and deliver impressive results with every project.

Whether you are looking for house extensions, home renovations, loft conversions or more, our commercial and domestic builders are here to help. Whether you need renovation or new home specialists, we work closely with our clients to establish an achievable plan for their project, keeping in close contact and maintaining a high standard of quality across all aspects of the build. Contact us today to learn more.

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A Genuinely Local Company

What We Do

From rear-facing extensions and structural alterations to dormer conversions and new domestic builds, our commercial and domestic builders offer a full package of services for your property. Find out more.

New Builds

Looking to build the home of your dreams? With all trades included in-house, our team of new home specialists at C James Carpentry & Construction Ltd is the smart choice for new domestic and commercial properties in the Cardiff area.

Turn-Key Builds
New Domestic Builds
New Offices
New Build Specialists

House Extensions

Our local contractors have built countless house extensions for properties in the local area. We offer a start-to-finish service, designing and building the ideal extension for your property.

Rear-Facing Extensions
Side-Return Extensions
Wraparound Extensions
Planning and Design

Home Renovations

Whether you are looking for loft conversions or complete home renovations, you can depend on C James Carpentry & Construction Ltd. We offer an outstanding service for a fair price.

Structural Alterations
Dormer Conversions
Bathroom Remodelling
Hard Landscaping

About Us

C James Carpentry & Construction Ltd is a family-run building company with a deep connection to the local community. A large team of experienced professionals, we take on projects of all sizes and never compromise on quality. We are proud members of the Federation of Master Builders (FMB), one of the most respected building associations in Britain.

All our domestic builders’ work comes with a one-year workmanship guarantee as standard, and we are covered by public and employer liability insurance, as well as professional indemnity. We sponsor a hole at St Mellons Golf Club as well as a priority seating area at Rumney Rugby Club.

To find out more about our house extensions, home renovations, loft conversions and more, get in touch with one of our new home specialists today. We are always happy to discuss our services in the Cardiff area.

Latest Projects

Commercial and Domestic Builder in Cardiff | House Extensions and Much More

A Professional Team of Local Contractors

What We Do

New Builds

Turn-Key Builds

New Domestic Builds

New Offices

New Build Specialists

House Extensions

Rear-Facing Extensions

Side-Return Extensions

Wraparound Extensions

Planning and Design

Home Renovations

Structural Alterations

Dormer Conversions

Bathroom Remodelling

Hard Landscaping

About Us