Completed building work by The Big Conversion Company

Home Renovations Across Dorset

One trusted team for renovations, conversions and extensions across the county.

Covering Dorset from our Poole base

The Big Conversion Company delivers home renovations, conversions and extensions across Dorset. Being based in Poole means the whole BCP conurbation and the surrounding towns are genuinely local to us — close enough for a site visit this week, and for the team to be on site every day of your build.

Dorset's housing is wonderfully varied — Victorian terraces, interwar semis, post-war family homes, bungalows and coastal properties — and each behaves differently when you renovate or extend it. Coastal weather is a real factor here too, and we plan builds around it.

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Completed building work by The Big Conversion Company
  • 200+ Projects Completed
  • Fully Managed Services
  • Clear, Honest Pricing

Where we work

Bournemouth

Our home patch, covered by every service we offer — conversions, extensions and full renovations.

Poole

Renovations, loft conversions, garage conversions and extensions — see our dedicated Poole pages.

Christchurch & beyond

Christchurch including Highcliffe and Mudeford, plus Wimborne and New Milton — ask us about your area.

The case for it

What we do

Full refurbishments, loft conversions, garage conversions, extensions, kitchens and bathrooms — all fully project-managed with a detailed written estimate up front. Wherever you are in the county, the process is the same: a free consultation, a site visit, and a detailed itemised estimate before any work begins.

Perfect for

  • Home renovations
  • Loft conversions
  • Garage conversions
  • Home extensions
  • Kitchen renovations
  • Bathroom renovations
  • Fixed-Price Guarantee
  • Stress-Free Project Management
  • Tailored Designs
  • Clear, Honest Pricing
The Big Conversion Company team at work

Why us

Why choose The Big Conversion Company?

  • Honest, transparent pricing
  • Detailed estimates — no hidden surprises
  • High-quality workmanship
  • Clean, well-managed sites
  • Strong communication throughout

Many of our clients come to us after receiving confusing or incomplete quotes — we pride ourselves on doing things differently.

Areas we cover

  • Bournemouth
  • Poole
  • Christchurch
  • Wimborne
  • New Milton

Get a Free Quote Anywhere in Dorset

Tell us where you are and what you're planning — we'll offer honest advice and a clear, detailed estimate.

Our Process

Simple & Stress-Free

  1. 1

    Initial consultation

    Discuss your ideas and requirements.

  2. 2

    Site visit

    Assess your property and feasibility.

  3. 3

    Detailed estimate

    Clear breakdown of costs.

  4. 4

    Design & planning support

    If needed — we guide you through planning.

  5. 5

    Build phase

    Managed from start to finish.

Frequently asked questions

Which areas of Dorset do you cover?
Bournemouth, Poole and Christchurch are our core area, plus Wimborne, New Milton and the surrounding towns — ask us about your location.
Do you charge for quotes?
No — the consultation, site visit and written estimate are free.
Do you handle planning applications?
Yes — where planning or building regulations approval is needed, we guide you through the process as part of the project.
Who manages the build?
We do — one team and one point of contact from the first consultation to completion.

Reviews

What Our Customers Have To Say!

Rated 5.0 from 18 Google reviews

  • “Excellent all round from start to finish , used twice now , highly recommended”

    Richie

  • “Our extension looks amazing, the team were prompt, knowledgeable, tidy and efficient. Highly Recommend.”

    Lorraine

  • “Matt at the Big Conversion company was great. His company installed our new kitchen for us. Work was completed on schedule to a high standard. He was friendly, polite and coordinated well with all the other contractors we were using.”

    Gail Stuart

  • “Matt and his team have helped us out with a number of projects and each time they have delivered 100%. We had our main ensuite bathroom completely remodelled and then an extension to create a downstairs guest room with ensuite.”

    Marcus Cahill

  • “Matt and co. converted our large garage into a granny flat with a full utility. Matt and his team were great at communicating through the whole development.”

    Adam

  • “Matt was really responsive from the point of requesting & providing a quote for the works, tweaking the quote when we made changes, and fulfilling the job within the estimated time frame.”

    Kieran McNeill

Don't Know Where To Start?

We are here to help. If you have any questions or want to enquire more regarding one of our services, then contact our team today.