The Arden & Oak Knowledge Centre.
Everything you need to know about designing, building and owning a luxury garden room. Expert guides covering insulated timber-frame construction, planning permission, foundations, design inspiration, finance and more.
Planning Permission
Everything about permitted development, planning rules and regulations.
Timber-Frame Construction
Understand why we build with Structural Insulated Panels.
Buying Guide
Costs, specifications, sizes and choosing the right building.
Garden Room Ideas
Home offices, gyms, studios, bars, cinemas and more.
Foundations
Ground screws, drainage, sloping gardens and site preparation.
Finance
Payment options, monthly finance and budgeting advice.
Design Inspiration
Modern, Scandinavian and traditional aesthetics for your garden.
Build Process
From site survey and steel foundation anchors to completion — step by step.
UK permitted development, simplified.
Our full editorial planning guide — permitted development diagram, typical garden layouts, planning process timeline, England & Wales installation map and free planning review.
- planning permission
Do Garden Rooms Need Planning Permission?
For the vast majority of UK homeowners, a garden room is permitted development — no planning application required.
Read the guide - timber frame construction
Why Timber-Frame Construction?
Structural Insulated Panels create a stronger, warmer, more airtight garden room than traditional timber framing.
Read the guide - timber frame construction
timber-frame vs Timber Frame: The Real Difference
A head-to-head comparison of the two most common garden room construction methods — and why timber-frame genuinely produces a warmer, tighter, longer-lasting building.
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Timber Frame vs Steel Frame Garden Rooms
Steel frames feel modern and sound premium — but for a heated garden room you'll live in year-round, timber frame construction dramatically outperforms them on insulation, condensation risk and long-term running costs.
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How Much Does a Garden Room Cost?
Fully installed prices, what drives the number up or down, and where to spend for real long-term value.
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Choosing Cladding: Cedar, Thermowood, Accoya & Charred Compared
The four cladding materials we offer, what they actually look like over ten years, and which one to pick for your garden.
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Related reading.
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The Bespoke Collection
Every model in the Arden & Oak range — configurable, architectural, delivered.
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Garden Offices
Year-round workspaces with proper acoustic separation and building-reg-grade insulation.
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Timber-Frame Construction
Factory-engineered Structural Insulated Panels — the reason we don't build with timber framing.
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Planning Permission
Most garden rooms are permitted development — the height, position and paperwork explained.
Read - Pillar
Finance Options
Indicative monthly finance for every configuration, subject to lender approval.
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Brochure
Every model, every option and every price — one PDF to your inbox.
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