Home Extensions in Bournemouth, Poole & Christchurch

Expand Your Home Without the Stress of Moving

Looking for home extensions in Bournemouth? At The Big Conversion Company, we specialise in designing and building high-quality home extensions across Bournemouth, Poole, and Christchurch.

Whether you’re looking to create a larger kitchen, open-plan living space, or additional rooms, we provide a fully managed service from start to finish.

Why Choose a Home Extension?

A home extension allows you to transform how you live — without the cost and disruption of moving.

Ideal for:

  • Open-plan kitchen living areas
  • Additional bedrooms
  • Utility rooms
  • Home offices
  • Larger family spaces

✔ Increase property value
✔ Stay in the home you love
✔ Customise your layout to suit your lifestyle

Home Extension Costs in Bournemouth

The cost of a home extension depends on size, design, and level of finish.

Typical costs:

  • Small extension: £25,000 – £45,000
  • Medium extension: £45,000 – £80,000
  • Large / high-end extension: £80,000+

We focus on providing accurate, detailed estimates from the beginning, helping you avoid unexpected costs later in the project.

Types of Extensions We Build

Rear Extensions

The most popular option — perfect for open-plan kitchen and living spaces.

Side Extensions

Great for utilising unused land and increasing internal space.

Wrap-Around Extensions

Combine rear and side extensions for maximum impact.

What’s Included in Our Extensions

We provide a fully managed service, including:

  • Groundworks and foundations
  • Structural works and steel installation
  • Brickwork and roofing
  • Windows, doors, and bi-folds
  • Plumbing and electrics
  • Plastering and finishing
  • Full project management

Our Process - Simple & Stress-Free

  1. Initial consultation – Discuss your ideas and requirements
  2. Site visit – Assess your garage and feasibility
  3. Detailed estimate – Clear breakdown of costs
  4. Design & planning support (if needed)
  5. Build phase – Managed from start to finish

Why Choose The Big Conversion Company

We understand how important it is to get your project right.

That’s why we focus on:

  • Honest and transparent pricing
  • Detailed estimates (no hidden extras)
  • High-quality workmanship
  • Clean and organised sites
  • Strong communication throughout

We aim to give you confidence from the start — not uncertainty.

Home Extensions Bournemouth & Surrounding Areas

We cover:

  • Bournemouth
  • Poole
  • Christchurch
  • Wimborne
  • New Milton

If you’re searching for:
👉 “home extensions Bournemouth”
👉 “house extension cost Poole”

You’re in the right place.

❓ Frequently Asked Questions

1. Do I need planning permission for an extension?

Some extensions fall under permitted development, but larger projects will require planning approval.
👉 Learn more at: https://www.planningportal.co.uk/


2. How long does a home extension take?

Most extensions take between 8–16 weeks, depending on size and complexity.


3. How disruptive is the process?

We manage projects carefully to minimise disruption and keep your home as functional as possible.


4. Will it add value to my property?

Yes — a well-designed extension can significantly increase both value and usability.

Recent Extension Projects

Want to see more of our completed projects? Visit our gallery or connect with us on social media to explore our latest work.

📞 Get a Free Home Extension Quote

Thinking about extending your home?

We’re here to:

  • Offer honest advice
  • Provide a clear estimate
  • Help you plan your project properly
Check Out Some of Our Latest Blog on Home Extensions