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Garden Room Cost Calculator

Use our free garden room cost calculator to get an instant estimate for your bespoke project.

Whether you're planning a garden office, gym, or studio, adjust the size, finishes, and features below to see accurate pricing for a fully installed garden room.

Step 1 of 714%

Price (ex VAT)

£13,632.5

Total inc VAT

£16,359

Choose Your Garden Room Size

3m8m
2.5m6m

Calculated Dimensions

Floor Area

12.0

Wall Height

2.4m

Wall Area

33.6

Roof Area

18.2

Summary

Size:4m × 3m(12.0m²)
Interior:
Standard
Electrical:4 lights, 2 sockets
Door:UPVC French 180cm
Windows:None
Cladding:
Front: cedarSides: metal

How is the garden room cost calculated?

Real-time Pricing

Our calculator uses current material and labor costs to give you a realistic budget, not a generic "starting from" price.

All-Inclusive Estimates

The price includes foundations, professional installation, insulation, internal electrics, and high-quality finishes.

No Hidden Costs

Use this tool to compare costs of cladding, glazing, and sizes. We value transparency from the very start.

* These prices are estimates only and subject to a site survey. Ground conditions, access, and specific requirements to your property may affect the final cost.

Frequently Asked Questions