Log Burner in a Shed — UK 2026 Cost Guide
Yes, it's legal. Yes, you need HETAS certification (and your insurance will want it). UK 2026 professional cost: £3,000–£4,600.
The short answer
UK 2026 typical: £3,000–£4,600 total for a professionally installed, HETAS-certified shed log burner. A DIY install with a Hobbit stove kit runs ~£1,500–£2,500 — but you forgo HETAS certification, which typically voids your home/garden insurance cover for the appliance.
The popular myth that "sheds are unregulated" for solid fuel appliances is incorrect. Approved Document J and BS8303:2018 apply just as they do inside the house.
Get your shed install estimate
Pick "Shed" on step 5 of the calculator. The scenario multiplier accounts for the smaller building, shorter flue runs, and standard HETAS scope.
Open the calculator →What you're paying for
- Stove unit: micro/tiny stoves (Hobbit, Salamander, Charnwood Aire 3) start £450–£995 and are well-matched to typical shed volumes
- Twin-wall flue (short run): £900–£1,800 installed for a typical single-storey shed flue route
- Hearth + register/floor plate: £250–£600. Often a constructional hearth on a concrete pad, since the shed floor is typically combustible timber
- Fire-rated wall boarding behind and beside the stove (calcium silicate board): £200–£600 in materials and fitting
- HETAS labour: 1 day for a typical single-storey shed setup, less if the building is brand new and the installer can specify positions in advance
The 2.3m proximity rule
If your shed is within 2.3 metres of the main house, the flue must terminate at the main house roof height — not the shed roof. This can add 4–6 metres of twin-wall pipe at £60–£120/m, raising the flue element by £600–£2,000.
If you have the option, siting the shed at 2.3m+ from the house keeps costs at the lower end. Most UK garden sheds are comfortably outside this distance, but cottages and end-terraces need checking.
HETAS access — standard
Shed installations are within standard HETAS scope. Salamander Stoves and a number of trade flue suppliers regularly stock DIY kits with Building Regs guidance. For HETAS certification you need a registered installer — many don't actively market shed work but will quote on request.
Recommended shed stoves
Right-size the stove to the shed volume. Under-rate rather than over-rate — sheds heat up fast.
- Salamander Hobbit(~£449, 3.5kW) — the archetypal compact UK stove for sheds and shepherd's huts.
- Charnwood Country 4 BLU (£994, 4kW) — best UK-made entry. 10-year warranty when registered. Charnwood guide →
- Aarrow Hamlet Solution 4 (£695, 4.5kW multifuel) — affordable mid-market option. Aarrow guide →
Get 3 free quotes from HETAS-registered installers
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Find an installer →Frequently asked questions
Can I really put a log burner in a shed?
Yes — Stovax themselves confirm this works. But Approved Document J and BS8303:2018 apply just as they do in the main house. HETAS certification or Building Control sign-off is required. The popular "sheds are unregulated" idea is incorrect for solid fuel appliances.
How much does a shed log burner install cost?
UK 2026: £3,000–£4,600 total installed professionally with HETAS certification. £1,500–£2,500 for a DIY install using a Hobbit stove kit (but you won't have certification). The big cost trap is the 2.3m proximity rule — if your shed is within 2.3m of the main house, the flue must reach main-house roof height, adding £600–£2,000.
What's the smallest log burner I can fit in a shed?
The Salamander Hobbit (3.5kW) at ~£449 is purpose-built for compact spaces like sheds, shepherd's huts, and tiny homes. Other options: Charnwood Country 4 BLU (£994, 4kW) and Aarrow Hamlet Solution 4 (£695, 4.5kW). Going under 5kW keeps you below the air-vent threshold.
Will my shed insurance cover a log burner?
Typically no without HETAS certification. Most home/garden insurance policies treat a solid fuel appliance as a notifiable installation and require a Certificate of Compliance. Without it, fire or CO claims can be voided. Don't DIY-install if you want insurance cover.
Do I need a CO alarm in a shed install?
Yes — mandatory under Approved Document J. A battery-only CO alarm (BS EN 50291) is fully compliant; you don't need mains power. Place at least 300mm from any wall, between 1m and 3m from the stove.