Business Details
50+ Years
experience
Expert Loft Conversions and Home Extensions in Bristol
C&A Johnson is a family-run loft conversion and home extension specialist serving Bristol, Bath, and surrounding areas since 1963. With over 56 years of experience, we combine traditional craftsmanship with modern techniques to deliver high-quality, tailored solutions for residential properties. Our team of directly employed, qualified tradesmen ensures every project meets exacting standards, supported by continuous project management from initial design to completion. As long-standing members of the Federation of Master Builders, we offer Build Assure insurance-backed warranties, providing clients with complete peace of mind.Our turnkey service encompasses free consultations, CAD design, planning permissions, and all administrative requirements, ensuring seamless execution of single-storey extensions, two-storey extensions, bi-fold door extensions, and loft conversions across various property types including Victorian terraced houses, semi-detached homes, detached properties, and bungalows.
Services
Single Storey Extension
Two Storey Extension
Bi-Fold Door Extension
Loft Conversions
Velux Conversions
Dormer Loft Conversions
Bungalow Loft Conversions
En-suite Installations
Details
- Year established: 1963
Highlights and features
- Tailored design and build service from initial consultation to completion
- Turnkey solutions including planning permissions and building regulations
- Continuous project management by experienced directors
- Directly employed qualified tradesmen with specialist expertise
- Insurance-backed warranties through Federation of Master Builders membership
Associations and certifications
- Federation of Master Builders
- Build Assure
What people say
Professional team
High quality finish
Excellent communication
Completed on time
Minimal disruption
Services
Loft Conversions
Specialist loft conversions for Bristol properties since 1963. Our expert team delivers bespoke solutions including Velux, dormer, and hip-to-gable conversions. We handle all planning permissions, structural calculations, and building regulations compliance. Projects include full electrical certification and insurance-backed warranties, with completed works passing all building control inspections.
Single Storey Extension
Custom single-storey extensions designed to complement existing properties. Our service includes architectural drawings, structural engineering, and full project management. We specialise in bi-fold door extensions and garden room solutions that maximise natural light while maintaining thermal efficiency and building regulation compliance.
Two Storey Extension
Space-optimising two-storey extensions with cost-effective design solutions. Our team manages all aspects from foundation work to roof construction, ensuring seamless integration with existing structures. Projects include party wall agreements assistance and complete internal finishing packages tailored to client specifications.
Bungalow Loft Conversions
Specialist bungalow loft conversions maximising available space. We create master bedrooms with en-suites or multi-room layouts while maintaining property aesthetics. Our solutions include dormer extensions for headroom and full compliance with conservation area requirements where applicable.
En-suite Installations
Integrated en-suite bathroom installations as part of loft conversions or extensions. Our service includes plumbing certification, tiling options through trade suppliers, and bespoke design solutions. All installations meet current building regulations with full certification provided upon completion.
Questions
Do you offer a complete loft conversion service?
Yes, we provide a full turnkey service including design, planning permissions, building works, and final certifications.
Are building regulations included in your service?
We handle all building regulation applications and ensure full compliance with current standards.
Do you use subcontractors for major works?
We employ our own qualified tradesmen for most works, only using trusted subcontractors for specialist tasks.
Can I view completed projects before committing?
Yes, we can arrange visits to recent projects to see our quality of workmanship firsthand.
Do you offer warranties for completed works?
All projects come with an insurance-backed Masterbond Warranty through our FMB membership.
How are payments structured?
Payments are staged with no deposit required, only covering administration costs upfront.
Reviews (5)
Lucie Westwood
Jun 26, 2021
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We would highly recommend C&A Johnson for a loft conversion. We had our loft converted in 2015 and couldnt be happier with our new space. C&A Johnson were very helpful through design and planning and we never felt rushed with decisions. The two teams involved in the different stages of the conversion were efficient, very tidy and professional. We were impressed by how they managed to keep mess to a minimum, even when it came to breaking through the loft floor for stair access. One element which stood out for us was how C&A approached finishing the loft bathroom. We decided to use wall boards
Lawrie Mills
Jan 30, 2021
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We had a nice size loft conversion carried out by C&A Johnson. From the 1st stage until the last, everyone involved was amazing. You will not regret choosing to have work carried out by them. In fact I am about to start my next build project with them.
Chris Humphries
Nov 18, 2020
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Informed, professional and excellent quality of service from start to finish from Simon and the team.
C&A Johnson listened and tailored the design to suit our preferences, whilst recommending invaluable experience to fully utilise the loft space.
Simon went above and beyond during the planning stages to answer questions regarding the project with neighbours - a service we didn't expect, but fully appreciated. Would not hesitate to use C&A Johnson in the future.
C&A Johnson listened and tailored the design to suit our preferences, whilst recommending invaluable experience to fully utilise the loft space.
Simon went above and beyond during the planning stages to answer questions regarding the project with neighbours - a service we didn't expect, but fully appreciated. Would not hesitate to use C&A Johnson in the future.
James Carmichael
Jul 01, 2020
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We had our loft converted by C&A around a year ago. The initial design phase was handled by Simon and Charlotte, and once the build progressed Tyrone was our main point of contact during the build.
C&A were excellent at keeping us informed about what to expect and about every phase of the project. They used specialist trades people such as electricians, plumbers, tilers and plasterers, and everything has been finished to a high standard throughout. We were particularly pleased with the ensuite which was beautifully finished and tiled. We only had one or two minor issues which were resolved
C&A were excellent at keeping us informed about what to expect and about every phase of the project. They used specialist trades people such as electricians, plumbers, tilers and plasterers, and everything has been finished to a high standard throughout. We were particularly pleased with the ensuite which was beautifully finished and tiled. We only had one or two minor issues which were resolved
Martin Baker
Sep 16, 2019
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C&A Johnson were appointed for our loft conversion project after a very close tendering exercise in which they price matched the lowest quote we had received. We decided to go with them as we were impressed by their approach set out by Simon which inspired confidence that our needs and requests would be accommodated. We have not been disappointed as the standard of service throughout from design and specification through building work to finished details along with project management and administration have been of a very high level. The initial design drawings prepared by Simon and Charlotte
