Garden rooms in Winchester
4 garden room builders we've checked name Winchester as an area they cover – County Windows and Spaced Out Garden Rooms are based there. They design and build insulated timber garden rooms and garden offices, usually including the base, electrics and finishing. 1 of them publishes prices, shown below.
We only list a firm here if its own website names Winchester (or it's based there). Listed in alphabetical order – not ranked. Facts checked on each firm's website, 24 October 2026. None of them has paid to be here.
County Windows
- Based in
- Winchester showroom (Easton Lane, SO23 7RU); also a showroom in West Parley, Dorset
- Area covered
- Winchester, Southampton, Portsmouth, Chichester, Hampshire, Wiltshire, Surrey and surrounding areas; has a page for Fleet.
- Prices
- not stated
- Insulation
- Insulated garden rooms (per their site)
- Planning help
- not stated
- Guarantee
- 10-year guarantee on the garden room described
- Also says
- Mainly a windows, doors and conservatories company that also builds garden rooms.
CS Garden Offices
- Based in
- Gosport (workshop at 104 Fareham Road, PO13 0BA)
- Area covered
- Hampshire and the South: Portsmouth, Fareham, Southampton, Chichester, Winchester, Andover, Petersfield and surrounding areas. Also has pages for Dorset, Surrey, Sussex and Wiltshire.
- Prices
- From £8,982 (smallest standard garden office size; VAT not stated)
- Insulation
- Structural insulated panels with a 75mm polyurethane core; quotes a U-value of 0.13
- Planning help
- Says most garden offices need no planning permission and it can guide you through the process where needed.
- Guarantee
- 10-year guarantee
- Also says
- Modular SIP buildings made in its Gosport factory; says design, manufacture, groundworks and installation are all in-house, with a typical install in one day.
Hideaway Garden Rooms
- Based in
- Byfleet (registered office, KT14)
- Area covered
- Lists more than 100 towns across Surrey, Sussex, London, Berkshire and Hampshire on its areas page.
- Prices
- not stated
- Insulation
- Fully insulated rooms, ready to use from day one (per their site)
- Planning help
- not stated
- Guarantee
- not stated
Spaced Out Garden Rooms
- Based in
- Winchester (SO21)
- Area covered
- Hampshire.
- Prices
- not stated
- Insulation
- Bespoke insulated garden rooms (no specification published)
- Planning help
- not stated
- Guarantee
- not stated
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Most garden rooms don't need planning permission if they stay within the official limits – but check with your council first. Read our planning permission guide, or compare kit log cabins for a home office if you'd rather build one yourself.