Log Cabin Cost Calculator UK
Estimate garden log cabin costs — from basic summer houses to fully insulated home offices.
Calculate Your Log Cabin Cost
How Much Does a Garden Log Cabin Cost in the UK?
Log cabin costs in the UK range from £2,000 for a basic 3×3m summer house to £30,000+ for a fully insulated home office or garden studio. A popular 5×4m insulated cabin costs £8,000–£15,000 including installation. Luxury timber lodges with decking, electrics and insulation cost £20,000–£50,000.
Key cost factors: size, timber thickness (28mm basic to 70mm+ premium), insulation package, electrical installation (£800–£2,500), glazing type and delivery distance. Planning permission is generally not required for cabins under 2.5m at the eaves if they occupy less than 50% of garden space.
Frequently Asked Questions
How much does a log cabin cost in the UK?
A basic 3×3m cabin costs £2,000–£5,000. A mid-range 5×4m insulated cabin costs £8,000–£15,000. Fully insulated premium cabins start at £15,000.
Do I need planning permission for a log cabin?
Not usually if under 2.5m at eaves height, set back from highway, and the cabin plus outbuildings occupy less than 50% of the garden. Check permitted development rules.
Can a log cabin be used as a home office?
Yes — insulated cabins with double glazing and electrics make excellent year-round home offices. Use 70mm+ walls and floor insulation for comfort.
How long do log cabins last?
A quality log cabin lasts 20–50 years with annual treatment. Scandinavian pine and spruce treated with preservative oil are most durable.
What thickness logs do I need?
For summer use: 28–44mm. For year-round use: 58–70mm with added insulation. For home offices: 70mm+ with cavity insulation.
How do I insulate a log cabin?
Add rigid foam insulation boards to walls and roof, plus underfloor insulation. Draught-proof doors and use double or triple glazing for best results.
How much does it cost to put electricity in a log cabin?
A basic spur from the house costs £800–£1,500. A full consumer unit with lighting, sockets and heating costs £1,500–£2,500.
What base does a log cabin need?
A solid concrete slab (£1,500–£3,000) or treated timber deck frame (£500–£1,500) on compacted hardcore. The base must be level and larger than the cabin footprint.
Can I sleep in a log cabin?
Yes — if it has a proper base, insulation and electricity. HMRC may consider it a separate dwelling for Council Tax if it has washing facilities.
How do I maintain a log cabin?
Apply a UV-resistant wood treatment oil or stain annually. Clean gutters, check roof felt condition and re-treat decking each spring.
What is the best log cabin brand in the UK?
Tiger Sheds, BillyOh, Dunster House and Lugarde are popular UK cabin suppliers. For premium quality, Scandinavian brands like Palmako are well regarded.
Does a log cabin add value to a property?
A quality insulated cabin used as a home office or studio can add £10,000–£20,000 to property value, particularly post-pandemic when home working is prized.