The Complete 2025 CFM Garden Room Guide
Everything you need to know before starting your project — plus a £250 subscriber discount.
Real pricing, planning rules, materials, foundations, build method, timelines and examples from real projects across the Cotswolds.
No spam. No hard sell. Just useful information from a family-run business that builds garden rooms every week.
What’s inside the guide:
✅ Planning permission & Permitted Development - explained in plain English, plus link to official gov.uk PDF
✅ Foundations & base requirements - why we use RADIX ground screws (no concrete slab needed)
✅ What is ‘Turn Key’ service really means - what’s included, what’s optional, and how to compare the quotes fairly
✅ Building methods - SIPs vs Timber Frame (why it matters for insulation, longetivity and price)
✅ CFM ranges & prices
✅ Example projects & Next Steps - real builds, how the process works, and what to do if you want a quote
🎁 £250 discount code for subscribers
About CFM
We’re Cotswold Furniture Makers — a small, family run business building high spec, all season garden rooms using SIPs (Structural Insulated Panels) for exceptional insulation and longevity.
Every project is finished with premium materials such as Western Red Cedar cladding, aluminium glazing, herringbone flooring and screwless sockets — the details that make it feel like a room in your house, not a shed at the end of the garden.
We live locally, build locally, and run the business from our own garden room showroom — built six years ago and used every day.
If you like the idea of a warm, fully finished space that feels like a room in your house (not a shed), we think you’ll find this guide helpful.
No pressure. No annoying sales calls.
Just the information you actually need — before anyone gives you the hard sell.
