Business Details
18 Years
experience
Expert Loft Conversions in Bristol & Bath
J B S Lofts Ltd has been delivering high-quality loft conversions across Bristol, Bath, and surrounding areas for over 15 years. Our team of specialists combines extensive industry experience with a commitment to craftsmanship, offering bespoke solutions that enhance both the functionality and value of residential properties. We manage every project phase in-house, from initial consultation and design approval to construction and finishing touches, ensuring seamless execution.Our dedication to transparency is evident in our upfront pricing and open communication throughout the process. Recognised for our expertise, we hold leading accreditations and maintain a 5-year warranty on all workmanship. With a focus on minimising disruption, our dedicated site managers and office staff provide continuous support, ensuring client satisfaction at every stage.
Services
Loft Conversions
Dormer Extensions
Velux Conversions
Hip-to-Gable Conversions
Bespoke Staircases
En-Suite Installations
Custom Storage Solutions
Roof Windows
Interior Finishes
Planning Support
Details
- Year established: 2008
Highlights and features
- We offer over 15 years of specialist loft conversion experience in the South West.
- Our dedicated site managers ensure projects run on time and to plan.
- We provide transparent pricing with no hidden fees from consultation to completion.
- Our 5-year warranty covers all workmanship and materials for complete confidence.
- We maintain open communication with daily progress updates throughout the project.
Associations and certifications
- ISO 9001
What people say
Professionalism throughout
Top end workmanship
Impeccable reliability
Highly recommend
Completed to schedule
Services
Loft Conversions
We design and install bespoke loft conversions that maximise living space while maintaining structural integrity. Our team handles all aspects from planning permission to final finishes, ensuring compliance with building regulations. Clients benefit from enhanced property value and tailored solutions for bedrooms, offices, or leisure spaces across Bristol and Bath.
Dormer Loft Conversions
Dormer conversions extend roof structures to create additional headroom and floor space. Ideal for semi-detached and terraced properties, these projects typically fall under permitted development. Our specialists complete installations within 8-12 weeks, incorporating custom storage and en-suite options while maintaining aesthetic continuity with existing architecture.
Velux Loft Conversions
Velux conversions add natural light through pitched roof installations without altering external aesthetics. As accredited installers, we guarantee high-performance windows with minimal planning requirements. Projects typically complete in 7 weeks, offering cost-effective solutions for creating bright, functional attic spaces in both modern and period properties.
Hip-to-Gable Conversions
Hip-to-gable conversions transform sloped roofs into triangular gables, ideal for semi-detached and end-of-terrace homes. This method accommodates multiple bedrooms and bathrooms within 10 weeks. Our team manages permitted development applications, ensuring seamless integration with existing structures while maximising usable floor space in older properties.
Bespoke Staircases
We design and install flowing staircase solutions that integrate with existing home layouts. Using dead space above stairs for entrances, our carpenters match original styles while meeting safety standards. This service ensures smooth transitions between levels, enhancing both functionality and aesthetic continuity in converted loft spaces.
People
Nic Williams
Director
With over 15 years in carpentry and construction, Nic leads J B S Lofts' operations, overseeing project delivery and quality control. His hands-on approach ensures every conversion meets exacting standards.
Questions
What types of loft conversions do you offer?
We specialise in Velux, Dormer, Hip-to-Gable, Mansard, and L-shaped conversions, each tailored to property type and planning requirements.
Do I need planning permission for a loft conversion?
Most conversions fall under permitted development, but we handle all applications and ensure compliance with local regulations.
How long does a typical loft conversion take?
Project timelines range from 7-12 weeks depending on complexity, with clear schedules provided before commencement.
What warranty do you provide?
We offer a 5-year warranty on all workmanship and materials, with building certificates provided upon completion.
Can you help with design and planning?
Yes, our team provides full architectural support, including 3D visualisations and selection of fixtures and fittings.
Are your builders directly employed?
Yes, we use our own skilled tradespeople to maintain quality control and project timelines.
Reviews (3)
Katherine Lingham
May 19, 2021
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If you’re trying to decide who to use for a loft conversion, I wouldn’t hesitate in choosing JBS! We had such a great experience; all the team were professional, friendly, careful with our home and amazing at their individual jobs. Our new space blends seamlessly with the rest of our home and looks fantastic. Thank you so much for all your hard work.
Monica Ehresmann
Apr 07, 2021
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We love the work JBS did for us in converting our loft into two bedrooms and a bathroom. The crew were all lovely to have around, and all very good at their respective jobs. The organisation was seamless and and communication always good and positive with Nick, Jonah (site manager) and all the workers. Great company, lovely people. Thank you!
Lucy Rose
Mar 10, 2021
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We used JBS for a loft conversion and ensuite bathroom. From beginning to end the service we received was second to none. Nick was fantastic in managing our expectations and helping us decide exactly what we wanted. We had complete faith in his recommendation of architect and the plans were great. Once the work started we were so impressed with the team we had working on our property. Anton, Sam, Shane and the rest of the team were respectful, friendly, patient and extremelyefficient. I can not believe what they achieved in 6 weeks, my mind was blown. But don't think this was a job done quickly
