Home Extensions

Home Extensions

Add more space to your home with seamless extensions that match your existing structure.

On-time Delivery
Transparent Pricing
Quality Materials
Experienced Team

About This Service

Our extension services help you expand your living space without the need to relocate. We ensure structural safety, design consistency, and a seamless connection between your existing home and the new space.

What's Included

  • Room additions
  • Floor extensions
  • Balcony & terrace expansion
  • Structural integration
  • Electrical & plumbing extension
  • Home Extensions overview

    Cost & Timeline

    Transparent pricing and realistic timelines, so you can plan with confidence.

    Typical Cost Range

    Home extensions typically cost between £30,000 and £150,000+, depending on size, type, and specification. Rear extensions start from around £30,000, side returns from £40,000, and loft conversions from £35,000. We provide a fully itemised quotation.

    Expected Timeline

    Most extensions take 6 to 14 weeks of construction time, plus 4 to 8 weeks for planning and design. A straightforward rear extension may take 8 weeks, while a double-storey extension typically takes 12 to 16 weeks.

    See the Transformation

    Drag the slider to compare before and after results

    Before state
    After state
    Home Extensions planning and approvals

    Planning & Approvals

    Some extensions fall under permitted development rights, while larger projects require full planning permission. We assess your property against local guidelines, handle the application process, and manage Building Regulations compliance. We also assist with party wall agreements and structural engineer consultations.

    Why Choose Sanatan

    Seamless design integration. Your extension will look and feel like a natural part of your home

    Full structural engineering and Building Regulations compliance included

    Party wall agreements and neighbour management handled professionally

    Milestone-based payments with no large upfront deposits required

    Project Gallery

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    Frequently Asked Questions

    Related Services

    Ready to Start Your Home Extensions Project?

    Get in touch for a free, no-obligation consultation. We'll discuss your vision and provide a detailed, transparent quotation.