Business Details
41 Years
experience
Expert Construction Services in High Wycombe
Established in 1985, Castle Building is a family-run business based in High Wycombe, serving South Buckinghamshire, Berkshire, and Oxfordshire. Our founders, trained as a bricklayer and carpenter respectively, bring over four decades of combined experience in all aspects of construction. As members of the Federation of Master Builders, we adhere to the highest standards of workmanship and customer service, with all projects fully guaranteed and covered by public liability insurance. Our hands-on approach ensures both partners remain on-site throughout each project, maintaining quality control and avoiding the common pitfalls of subcontractor reliance. We specialise in domestic extensions, loft conversions, listed building maintenance, and full-property renovations, delivering tailored solutions without requiring deposits.Our transparent pricing policy details exact specifications and costs, avoiding hidden extras while maintaining material quality. With a portfolio of repeat clients and referrals, we prioritise clear communication, site tidiness, and minimising disruption to household routines. Our long-standing relationships with trusted subcontractors, including plumbers and electricians, ensure consistent project delivery. Over 25 years of local expertise enables us to navigate planning regulations and blend traditional craftsmanship with modern construction techniques.
Services
Extensions
Loft Conversions
Listed Buildings
Alterations
Kitchens
Bathrooms
Details
- Year established: 1985
Highlights and features
- Established in 1985 with 40+ years combined director experience
- On-site supervision by both partners throughout projects
- No deposits required for any construction work
- Federation of Master Builders accredited standards
- Detailed estimates with no hidden costs
Associations and certifications
- Federation of Master Builders
What people say
Reliable builders
High standards
Excellent service
No hidden costs
On time
Services
Extensions
We specialise in creating functional living spaces through tailored extensions. Our process includes planning consultation, structural engineering coordination, and seamless integration with existing properties. Clients benefit from our hands-on management approach and 25+ years of local authority regulation expertise. All projects maintain minimal disruption to residents.
Loft Conversions
Transforming unused loft space into valuable rooms while adhering to building regulations. Our service includes feasibility assessment, planning permission guidance, and complete fit-out. The partnership's dual expertise in carpentry and bricklaying ensures structural integrity and quality finishes.
Listed Buildings
Preserving historical integrity while undertaking sensitive repairs and modifications. Our team combines traditional brickwork techniques with modern compliance standards. We navigate complex planning requirements for Grade II listed properties across Buckinghamshire and Oxfordshire.
Kitchens
Full-service kitchen projects from design consultation to final fitting. We coordinate tiling, plumbing, joinery, and electrics under one management structure. Our approach prioritises functionality and aesthetics while maintaining project timelines.
Bathrooms
Complete bathroom solutions including premium brand installations and custom configurations. Our qualified plumbers deliver watertight guarantees and coordinate tiling, flooring, and decoration. Projects incorporate accessibility considerations and modern design trends.
Questions
What building services do you specialise in?
We focus on domestic extensions, loft conversions, listed building maintenance, kitchen/bathroom installations, and general property alterations across South Buckinghamshire.
Are you insured for construction projects?
Yes, all our work is covered by full public liability insurance, and we provide written guarantees for every completed project.
How do you handle project payments?
We require no deposits. Payments are structured in equal stages throughout the project, with final payment due upon completion.
Can you work on listed buildings?
Yes, we have specialist experience maintaining and repairing Grade II listed properties while complying with strict planning regulations.
Do you use subcontractors?
We complete most work ourselves as qualified bricklayers and carpenters, only using trusted plumbers, electricians, and plasterers we've worked with for years.
How do you ensure project timelines?
By limiting to one extension project at a time and maintaining constant on-site presence, we avoid delays associated with multi-project builders.
