Shed & Outbuilding Installer
A shed and outbuilding installer designs, constructs, and installs garden buildings including sheds, summerhouses, workshops, garden offices, and log cabins. From off-the-shelf timber sheds to bespoke insulated garden rooms, they create practical outdoor spaces.
What does a shed and outbuilding installer do?
Shed and outbuilding installers handle the full build process, including:
- Timber shed supply and assembly
- Bespoke garden office construction
- Summerhouse and log cabin installation
- Workshop and hobby room builds
- Base preparation (concrete, paving, timber bearer bases)
- Insulation, lining, and electrical preparation for garden offices
- Roofing (felt, shingle, EPDM rubber, cedar shingle)
- Painting, staining, and weatherproofing
Do garden buildings need planning permission?
Many garden buildings fall under Permitted Development rights and do not need planning permission, provided they meet these conditions: single storey with a maximum eaves height of 2.5m; maximum overall height of 4m (dual pitch) or 3m (any other roof); positioned more than 2m from a boundary if over 2.5m high; not covering more than 50% of the garden; and not forward of the principal elevation.
In conservation areas and World Heritage Sites, outbuildings over 10m³ that are more than 20m from the house need planning permission. Listed buildings require Listed Building Consent. If the outbuilding will be used as a separate dwelling or for business purposes, additional permissions and Building Regulations may apply.
What to look for when hiring an outbuilding installer
When choosing a shed or outbuilding installer, consider:
- Structural quality — Check timber thickness, framing quality, and whether pressure-treated timber is used.
- Base preparation — A proper base is essential for longevity. Ask about base options and whether this is included.
- Insulation standards — For garden offices, insulation quality determines year-round usability. Ask about U-values and insulation material.
- Electrical readiness — For powered outbuildings, the structure should be prepared for a qualified electrician to install circuits.
- Guarantee — Look for a structural guarantee of at least 10 years and ask about timber treatment warranties.
Frequently Asked Questions
How much does a garden building cost?
A standard timber shed (8x6ft) costs £500–£1,500 supplied and erected. A summerhouse costs £3,000–£8,000. A basic garden office (3x3m) costs £5,000–£12,000. A bespoke insulated garden office with electrics costs £12,000–£25,000+. Base preparation adds £500–£1,500.
Can I use a garden building as an office?
Yes. A garden office is considered incidental to the enjoyment of the dwelling and usually falls under Permitted Development. It should be insulated, weatherproofed, and wired for power and data by a qualified electrician. If clients or customers visit regularly, or you employ staff there, check whether planning permission or business rates apply.