House Extensions & Conversions in Chesterfield, Derbyshire & South Yorkshire
Castle Homes Chesterfield design and build high-quality house extensions and conversions across Derbyshire and South Yorkshire. Whether you need a kitchen extension, a double-storey addition or a loft conversion, our experienced team delivers a seamless, stress-free build from planning to completion.
Extension & Conversion Services
- Single-Storey Extensions — kitchen extensions, garden rooms, utility rooms
- Double-Storey Extensions — adding bedrooms, bathrooms and living space
- Loft Conversions — dormer, hip-to-gable, Velux and mansard conversions
- Garage Conversions — converting integral or detached garages into living space
- Orangeries & Garden Rooms — premium glazed extensions
- Basement Conversions — underpinning and basement excavation
What's Included in Our Extension Service
- Initial design consultation and feasibility assessment
- Planning permission advice and application support
- Structural calculations and building regulations compliance
- Full build from foundations to final decoration
- All trades coordinated — brickwork, roofing, electrics, plumbing, plastering, joinery
- Project management throughout
Our Extension Build Process
- 1. Consultation — free site visit to discuss your requirements and budget
- 2. Design & Planning — architectural drawings and planning application if required
- 3. Quote — detailed fixed-price quote covering all works
- 4. Build — experienced team on site, regular progress updates
- 5. Completion — snagging, building control sign-off and handover
Areas Covered for Extensions & Conversions
- Chesterfield and North Derbyshire
- Sheffield and South Yorkshire
- Derbyshire
- Nottinghamshire
- Dronfield, Staveley, Clay Cross, Bolsover, Barnsley
Why Choose Castle Homes for Your Extension?
- Over 60 years of building experience — established 1963
- Family-run business with a personal approach
- CHAS Advanced Accredited
- Fully insured with BQI Insurance
- All trades in-house — no unreliable subcontractors
- Transparent, fixed-price quotes
Frequently Asked Questions — Extensions & Conversions
Q: Do Castle Homes build house extensions in Chesterfield?
A: Yes. Castle Homes design and build single-storey and double-storey house extensions across Chesterfield, Derbyshire and South Yorkshire.
Q: What types of extensions does Castle Homes build?
A: Castle Homes build single-storey extensions, double-storey extensions, kitchen extensions, loft conversions, garage conversions and orangeries across Derbyshire and South Yorkshire.
Q: How much does a house extension cost in Chesterfield?
A: The cost of a house extension in Chesterfield depends on size, specification and complexity. Castle Homes offer free, no-obligation quotes — contact them to discuss your project.
Q: Do Castle Homes handle planning permission for extensions?
A: Castle Homes can advise on planning permission requirements and work with architects and planning consultants to help you achieve the necessary consents for your extension.
Q: How long does a house extension take to build?
A: A typical single-storey extension takes 8–14 weeks to build. Double-storey extensions and loft conversions may take 12–20 weeks depending on size and specification.
Get a Free Extension Quote
Tel: 01246 281967