Garden Rooms

A garden room is usually designed to be used as extra living space, such as an office, gym or studio, and is often insulated for year round use. A summer house is a lighter, heavily glazed building mainly intended for relaxing in during the warmer months. A log cabin has a more solid, traditional look, with a chunkier and more enclosed feel than a summer house. The terms overlap and are often used interchangeably by sellers. The right choice depends on how often the building will be used, whether it needs to stay warm in winter, and the look wanted for the garden.

In most cases a garden room does not need planning permission, because it falls under permitted development. The main conditions are that it sits in the back garden rather than forward of the front of the house, is single storey, has a maximum eaves height of 2.5m, and is no more than 2.5m tall overall if within 2m of a boundary. Further from a boundary the limit is 4m for an apex roof or 3m for other roofs. All outbuildings together must not cover more than half the garden. Listed buildings, conservation areas and flats have extra rules, so check with the local council if unsure.

A garden room with less than 15m² of internal floor area usually does not need building regulations approval. Between 15m² and 30m², it is usually exempt as long as it is at least 1m from any boundary or built mainly from non-combustible materials. Larger buildings, or any building intended for sleeping accommodation, will normally need approval. Electrical work is treated separately and may need to be notified under Part P. If a garden room is close to the 15m² or 30m² thresholds, it is worth confirming the details with the local council's building control team before placing an order.

Yes, a summer house can be used in winter, although an uninsulated one will feel cold without some form of heating. A small electric heater, a thick rug and a few soft furnishings make a real difference on a dry winter afternoon. For regular year round use, an insulated garden room or garden office is the better option, as it holds heat and reduces condensation. Pressure treated timber also copes better with damp winter weather than dip treated timber over the long term. Keeping the building ventilated and the roof and base in good condition helps any summer house last through the colder months.

A garden room can cost anywhere from around £900 to well over £8,000, depending on size, materials and insulation. At Liverpool Sheds, a summer house starts from £899, a garden bar from £999, the Mersey Garden Room from £1,199 and the log cabin style Mersey Country Cabin from £1,369. Garden studios start from £1,899, while fully specified garden offices run from £6,999 for timber and £8,599 for composite. A base, electrics and interior finishing can add to the total. Delivery and installation are free across Merseyside, and the cost can be spread over 12 monthly payments with Klarna.

Garden room installation time depends mainly on the size and specification of the building. A smaller summer house or garden bar can often be put up in a single day, while larger insulated garden offices with internal finishes take longer. The base needs to be ready and level before installation starts, and a new concrete slab needs time to cure. Electrics are usually added by an electrician once the building is up. Liverpool Sheds builds every garden room to order and usually installs within 7 to 14 days of ordering, with free delivery and installation across Merseyside.

A garden room needs a firm, level base that stays dry and spreads the weight of the building evenly. Common options include a concrete slab, paving slabs laid on a compacted sub base, or a grid base with timber bearers. Larger and heavier buildings, especially insulated garden offices, are best on a concrete slab or a well built frame base. A poor base is one of the most common causes of sticking doors, uneven floors and early rot. Liverpool Sheds supplies combi bases and bearers and can advise on which type suits the ground and the size of the building.

Yes, insulated garden rooms make a big difference if the building will be used regularly through the colder months. Insulation in the walls, floor and roof keeps the space warmer in winter, cooler in summer and helps reduce condensation. This matters most for garden offices, gyms and studios used every day. An uninsulated summer house or garden bar is fine for occasional use and costs less to buy. Adding insulation later is possible in some timber buildings, but it is usually easier and neater as part of the original build, so it is worth deciding before ordering.

Yes, electricity can be run to a garden room, but the work must be carried out by a qualified electrician. Power is usually supplied through an armoured cable buried in a trench from the house consumer unit, with its own protection at the garden room end. Adding a new circuit to an outbuilding is often notifiable under Part P of the building regulations, which a registered electrician can self certify. Sockets, lighting and any heating are best planned before installation so cables can be routed neatly. An extension lead should never be used as a permanent supply to a garden building.

A garden room built under permitted development cannot be used as sleeping accommodation. Permitted development only covers outbuildings used for purposes incidental to the house, such as a home office, gym, hobby room or storage. Using a garden room as a bedroom or annexe would normally need full planning permission and building regulations approval, which bring stricter rules on fire safety, insulation, ventilation and drainage. An occasional nap on a sofa is not the issue, but regular overnight use is. Anyone planning a guest room or annexe should speak to the local council's planning department before buying.