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UK cost guide

Garden Room Cost UK

Typical UK garden room and garden office costs from mini self-assembly rooms to premium turnkey cabins.

Last reviewed: 1 September 2026 · Sources & data · Methodology

Typical planning cost£5,250 mini room / £11,750 office pod
Broader project range£2,500–£30,000+
Planning figures are estimates rather than quotations. Live calculators combine dated UK benchmarks with clearly separated modelling assumptions such as region, size, condition and specification.

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What affects the cost?

Garden room budgets depend on size, construction type, insulation, glazing, foundations, electrics, heating and whether the building is self-assembled or turnkey.

  • Room size and construction type
  • Insulation and year-round use
  • Base or foundations
  • Windows and doors
  • Electrical work and heating
  • Assembly and access

Typical cost breakdown

Building shell45–60%
Glazing & doors10–20%
Base/foundations10–20%
Electrics & finishes10–25%

Regional planning examples

The examples below apply our published modelling factor to the same national benchmark. They are not claimed as observed city-wide average quotes.

London£3,200–£38,400
Manchester£2,350–£28,200
Birmingham£2,450–£29,400
Glasgow£2,400–£28,500
Cardiff£2,300–£27,300

Sources used for this guide

Checkatrade

How Much Does a Garden Room Cost in 2026?

Published / checked: June 2026

Used for: Mini garden room, office pod, assembly, base and glazing benchmarks

View source ↗

Frequently asked questions

How much does a garden office cost?

Current UK guides put a basic assembled insulated office around £5,500, while a turnkey office pod can average around £11,750.

Can a garden room cost over £20,000?

Yes. Large high-spec or custom-built cabins can reach £15,000–£30,000 or more.

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