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Extensions & Loft Conversions

Specialising in creating additional living space that seamlessly integrates with your existing property, we handle every aspect of your project from initial design through to final completion. Our comprehensive approach ensures your extension or conversion not only meets your functional needs but adds significant value to your Bristol area home.

With extensive experience in both single and double-storey extensions, plus all types of loft conversions, we deliver projects that enhance your lifestyle whilst respecting the character of your property. Every project includes full structural calculations, building regulations compliance, and coordination with all necessary trades.

Ready to expand your living space? Contact us on 07710 890538 to discuss your extension or loft conversion requirements across Clevedon, Nailsea, Portishead, Bristol and surrounding areas.

Extensions & Loft Conversions

At JW Carpentry & Build, we understand that growing families and changing lifestyles often require additional space. Our extension and loft conversion services provide cost-effective solutions to create the extra room you need without the disruption and expense of moving house. We specialise in designs that complement your existing property whilst maximising the potential of your available space.

All our extension and conversion work comes with comprehensive project management, ensuring coordination between trades, adherence to timelines, and full building regulations compliance. We maintain clear communication throughout your project, keeping you informed at every stage from foundation to final decorating touches.


Single & Double Storey Extensions

Whether you need a simple single-storey extension for additional ground floor space or a comprehensive double-storey addition, we deliver extensions that integrate perfectly with your existing home. Our extension services include:

  • Kitchen extensions and open-plan living areas
  • Dining room and family room additions
  • Double-storey extensions with additional bedrooms
  • Wrap-around extensions maximising garden space
  • Garage conversions and integral extensions
  • Orangeries and garden room extensions
  • Structural modifications and supporting steelwork

We handle all aspects from foundation excavation through to final finishes, coordinating with structural engineers, building control, and specialist trades to ensure your extension meets all regulations whilst delivering exceptional quality and value.


Loft Conversions

Transform your unused loft space into valuable living accommodation with our comprehensive loft conversion service. Our loft conversion expertise covers:

  • Dormer loft conversions with additional headroom
  • Velux conversions using roof windows
  • Hip-to-gable conversions maximising space
  • Mansard conversions for maximum floor area
  • Structural modifications and floor strengthening
  • Staircase design and installation
  • Insulation, electrics, and heating integration

Each loft conversion is designed to meet building regulations whilst maximising the useable space within your roof structure. We coordinate all trades including structural work, electrics, plumbing, and plastering to deliver a complete living space ready for immediate use.


Project Management & Building Regulations

Beyond construction expertise, we provide comprehensive project management ensuring your extension or conversion progresses smoothly from concept to completion. Our project management includes:

  • Structural design and engineering calculations
  • Building regulations applications and liaison
  • Planning permission support where required
  • Trade coordination and scheduling
  • Materials procurement and quality control
  • Regular progress updates and communication
  • Final inspections and building control sign-off

This comprehensive approach ensures your project meets all regulatory requirements whilst being completed to the highest standards, on time and within budget. We take responsibility for all aspects, allowing you to focus on enjoying your enhanced living space.


Contract and Payment Process

Upon acceptance of the quotation, a formal contract will be issued for signature. To secure the project, a 10% deposit is required at contract signing. We operate with a structured payment schedule that includes staged payments throughout the project duration, with a 5% retention amount held until project completion. This retention is only released once the customer confirms complete satisfaction with all deliverables and services provided.

Warranty Coverage

All completed projects include a comprehensive 3-year warranty package, ensuring our commitment to quality and providing ongoing peace of mind for our clients.


FAQs

Extension costs vary significantly depending on size, complexity, and specification. Single-storey extensions can start from between £40,000-£60,000 and double-storey extensions from between £60,000-£120,000. The exact cost depends on factors including ground conditions, structural requirements, and chosen specification levels. We provide detailed, itemised quotes after assessing your property and understanding your specific requirements. Our pricing includes all trades, materials, and project management across Clevedon, Portishead, and surrounding areas.
Most loft conversions fall under permitted development rights and don't require planning permission, provided they meet specific criteria regarding size, height, and design. However, all loft conversions require building regulations approval to ensure structural safety, insulation standards, and fire safety compliance. We assess your property and advise whether planning permission is needed, handling applications where necessary. Our experience with local planning departments across the Bristol area ensures smooth approval processes. We always recommend checking permitted development rights before starting work, as restrictions may apply in conservation areas or listed buildings.
Project duration depends on the size and complexity of your extension. Single-storey extensions typically take 8-12 weeks from start to completion, whilst double-storey extensions usually require 12-16 weeks. Loft conversions generally take 6-10 weeks depending on the conversion type and structural requirements. These timelines include all stages from foundation work through to final decorating and snagging. Weather conditions, building control inspections, and any unforeseen structural issues can affect timelines. We provide realistic schedules during the quotation stage and maintain regular communication throughout the project to keep you informed of progress.
Yes, we regularly complete extensions and loft conversions whilst families remain in residence. We plan work schedules to minimise disruption, often leaving connections to existing services until convenient times and maintaining access routes where possible. For extensions involving kitchen or utility areas, we coordinate work to ensure you retain essential facilities throughout the project. Dust sheeting, noise management, and secure site boundaries help maintain comfortable living conditions. We discuss disruption management during the planning stage and adapt our approach to suit your family's needs and daily routines.
Extension & Conversion Specialists

Transform Your Living Space

Expert extensions and loft conversions throughout Clevedon, Nailsea, Portishead, Bristol and surrounding areas.

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