Hollands Prefab

Free guide · 2026 edition

The UK Guide to Prefab Extensions & Dormer Lofts

Eight pages, no fluff: what things cost, what's included, how the 5-day install works, and the questions everyone asks — answered.

  • Extension and dormer pricing — and what moves it
  • The 4-step process, from video call to crane day
  • Frequently asked questions, answered plainly
  • How we compare to a traditional build

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A prefab extension module being craned into a garden

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