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About our corner summerhouses
Corner summerhouses are designed to fit into the unused corners of your garden. They turn dead space into a comfortable outdoor room for relaxing, working, or entertaining. Sizes typically range from 7x7ft to 12x12ft. All models feature tongue-and-groove timber construction and double-glazed windows as standard.
The angular design slots neatly against two boundary fences or walls. This leaves the central garden area free for lawn, planting, or children's play space. Most corner models are pentagonal or diagonal in shape. This gives a wider internal floor area than a rectangular building of the same footprint.
If you prefer a different summerhouse style, browse our modern summerhouses for contemporary flat-roof designs. For a traditional peaked roof, see our apex summerhouses. Those who need storage alongside their relaxation space should consider a summerhouse with side shed.
Why We Chose This Range
"Corner summerhouses are the smartest use of dead space in a garden. We fit them into corners where nothing else would go. Customers are always surprised by how much room they get inside. A 7x7ft corner model gives you enough space for a sofa, coffee table, and still room to move around comfortably."
, Matt, Founder of Greenhouse StoresTypes of corner summerhouses we offer
Compact corner summerhouses
7x7ft models that fit smaller gardens and tight corners. Double doors with full-height glazing let light flood in. Tongue-and-groove walls provide natural insulation. Ideal for a reading nook, home office, or quiet retreat away from the main house.
Large corner summerhouses
10x10ft to 12x12ft models with generous floor space. Room for sofas, dining furniture, and workspace. Multiple window panels on the front face. These larger buildings work as garden offices, entertaining spaces, or hobby rooms throughout the year.
Insulated corner models
Double-glazed windows and insulated wall panels keep the interior comfortable in all seasons. Suitable for year-round use as a garden office or studio. Electric panel heaters bring the space up to working temperature within 20 minutes even in winter.
Corner summerhouses with veranda
Extended front canopy creates a sheltered outdoor seating area. Sit under cover during light rain without going inside. The veranda adds visual depth to the building and frames the entrance. Works well with garden furniture for al fresco dining.
Quick Guide: Measure the two walls or fences forming your garden corner. Allow 300mm clearance on each side for airflow and maintenance access. A 7x7ft corner summerhouse needs a corner space of roughly 2.4m x 2.4m including clearance. Position the glazed front to face south or south-west for maximum natural light.
Matt's Installation Tip: Corner Base Preparation
Corner summerhouses need a perfectly level base across the diagonal footprint. We recommend paving slabs on a compacted sand bed rather than concrete. Paving slabs let you adjust individual sections if the ground settles. The diagonal shape means a slightly larger base area than you might expect. Always build the base 50mm larger than the building footprint on all sides.
Corner summerhouses suit gardens of all sizes by making use of otherwise wasted space. For a single-slope roof alternative, see our pent summerhouses. Complete the look with outdoor seating from our garden furniture range.
Frequently Asked Questions
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What size corner summerhouse do I need?
A 7x7ft model suits small to medium gardens. It provides enough room for two armchairs and a small table. For a home office or entertaining space, choose 10x10ft or larger. Measure the corner space carefully and allow 300mm clearance on each side for maintenance and ventilation.
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Do corner summerhouses need planning permission?
Most corner summerhouses fall under permitted development. The building must be single-storey, under 2.5m at the eaves, and not cover more than half your garden. It must not be forward of the main house. Conservation areas have stricter rules. Always confirm with your local planning authority before ordering.
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Can I use a corner summerhouse as a garden office?
Yes, corner summerhouses make excellent garden offices. Choose an insulated model with double-glazed windows for year-round comfort. Run a weatherproof power supply from the house for lighting, heating, and sockets. The corner position keeps the office separate from the main garden, reducing distractions.
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What base does a corner summerhouse need?
A level paving slab or concrete base is essential. The base must be flat across the full diagonal footprint. Build it 50mm larger than the building on all sides. An uneven base causes doors to stick and gaps to open in the cladding. We recommend paving slabs on compacted sand for easy adjustment.
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How do I maintain a timber corner summerhouse?
Apply wood treatment or stain every 1-2 years. Check the roof felt annually for tears or lifting at the ridge line. Oil door and window hinges each spring. Clear any leaves or debris from the roof and guttering. Regular upkeep keeps a timber summerhouse weatherproof for 15-20 years.
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Are corner summerhouses warmer than standard models?
Corner models benefit from two sheltering walls or fences. This reduces wind exposure on two sides, helping retain internal warmth. Double-glazed windows and tongue-and-groove walls add insulation. For year-round use, add an electric panel heater rated at 1-2kW for a 7x7ft space.