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A 7m x 4m garden room offers a substantial 28 square metre nominal footprint for home working, hobbies, exercise or leisure. There is scope for several workstations, storage and seating, with flexibility to create separate working and relaxation areas within the same building.
Compare actual dimensions, construction, insulation, glazing and layout to find the right fit for your needs. Our Platinum Winchester range offers greater size and design flexibility than smaller Platinum models, making it particularly relevant for buildings close to 7m x 4m.
Browse the options below or explore our complete garden rooms and garden offices range to compare other sizes and specifications.
Size: 7m x 4m (approximately 28m²) · Construction: Redwood deal timber or LP® StrongCore™ cladding, depending on model · Glazing: Toughened glass with double glazing available · Insulation: Insulated and fully insulated options available · Roof styles: Apex and pent designs · Installation: Free professional installation.
Uses: Home office, garden studio, gym, games room, hobby room or relaxation space · Customisation: Bespoke sizes and designs available · Finishes: Coloured paint options available · Extra rooms: Integrated shed or additional room options on selected ranges · Bases: Base building service available · See before you buy: Full-size garden rooms on display at our Surrey show site near Guildford, Woking and Ripley.
Our experience: Robin Antill has worked with garden buildings since 1979, when he started Marina Sheds, manufacturing timber sheds himself. Today, Robin and the 1st Choice Leisure Buildings team use that hands-on experience to help customers compare garden rooms and garden offices based on construction, insulation, glazing, intended use and value for money.
| Feature | Platinum Garden Rooms | Royal Garden Rooms |
|---|---|---|
| Best for | Home offices, hobbies, studios and garden retreats | Premium offices, studios and larger multi-purpose rooms |
| Price position | Lower initial investment | Premium specification and price |
| Popular models | Fleet Apex and Odiham Pent | Bletchley, Buckingham, Denham and Marlow |
| Typical sizes | Fleet and Odiham available up to approximately 16×12 ft | Royal models available up to approximately 20×12 ft |
| Insulation | Fully insulated Fleet and Odiham models with insulated walls and roof | Premium fully insulated construction |
| Double glazing | 14mm double glazing on Fleet and Odiham | Higher-specification double-glazed garden room range |
| Design choice | Apex Fleet or contemporary pent-roof Odiham | Wider choice of distinctive Royal designs and configurations |
| Why choose it? | You want an insulated garden office or room with an excellent balance of comfort, quality and price. | You want a more substantial garden room with premium specification and additional floor-space options. |
Explore our photo gallery featuring garden rooms supplied and installed for our customers. From stylish home offices and creative studios to relaxing retreats and versatile living spaces, discover how our bespoke garden rooms can transform your outdoor space.
Customers Garden Rooms Supplied
An exact 7m x 4m garden room has a footprint of 28 square metres, approximately 301.39 square feet. The nearest whole-foot imperial dimensions are 23ft x 13ft, approximately 7.01m x 3.96m. These sizes are close, but not identical. Confirm the exact external dimensions, roof overhang and foundation requirements for the selected building.
Compare the three designs below for a configuration around this size. Request a 23ft x 13ft quotation or an exact metric configuration and confirm availability for your chosen model. Framing, insulation and lining reduce usable internal space, while roof overhang adds to the space needed outside.
The seven-metre length allows you to plan distinct areas for desks, storage and seating. Draw each area and the routes between them before choosing doors and windows. Keep circulation routes clear of office chairs, opening cupboards and equipment. Plan glazing around screen glare, and include lighting, sockets and internet requirements in your layout.
A garden office around 7m x 4m can suit several workstations, depending on desk sizes, equipment and storage. Include printers, filing and visitor seating in your plan rather than counting desks alone. Confirm the finished internal dimensions before deciding how many people the room should accommodate.
Yes, as long as each activity has enough usable space. Allocate an area for desks and another for seating, hobbies or exercise. Measure equipment with its operating clearance, and keep door swings and cupboard access clear. Discuss floor suitability with the supplier if you intend to install heavy equipment.
The following Winchester designs have published size ranges that allow consideration of this footprint. Request a 23ft x 13ft configuration, the nearest whole-foot imperial size, and confirm availability and the agreed dimensions in a quotation before ordering. Request exact 7m x 4m measurements if your site requires them.
Compare doors, windows, roof style, cladding, framing and flooring as well as insulation. Check the selected drawing rather than assuming every design has the same entrance, roof orientation or usable wall space.
Confirm which side forms the frontage and where the doors and windows will sit. Check overall height, roof overhang and surrounding maintenance clearance. Include any requested changes in the agreed drawing and specification before ordering.
Optional wall and roof insulation is available on the Winchester models listed above. Confirm the insulation and internal lining package for your selected configuration. Check floor insulation separately; optional wall and roof insulation does not establish that floor insulation is included.
Confirm the doors and windows specification and ask which double-glazing options are available for the selected model. Explore our insulated garden rooms for information on insulation choices, then agree the package applicable to your building.
Assess heating, ventilation, moisture management, lighting, sockets and an internet connection alongside the building specification. Confirm any electrical installation and other services separately in your quotation. Insulation alone does not control the room’s temperature year-round.
Optional colour paint treatment is available. Browse our painted garden rooms and confirm the available finishes for your chosen model. Check colour choices and maintenance guidance, and ask about samples if a precise shade matters.
Free assembly is included on all our garden rooms and offices. Provide your postcode and access details before ordering so delivery arrangements and any restrictions can be confirmed.
Obtain the exact foundation requirements for the chosen model before commissioning work. Prepare a firm, flat and level base with sufficient surrounding installation clearance. Do not build a 7m x 4m base from the category name alone; use the agreed manufacturer’s drawing and foundation requirements for the selected metric or imperial configuration.
See our base preparation and additional garden building services. Base preparation is separate from the included building assembly; confirm availability and costs for your address.
Measure the narrowest gate and passage along the complete route from the delivery point to the base. Describe tight turns, steps, slopes, overhead restrictions and enclosed sections. Supply measurements or photographs of awkward areas so the team can assess access for building components before installation.
Robin Antill, founder of 1st Choice Leisure Buildings, began working with garden buildings in 1979. His manufacturing and retail experience informs our advice on comparing construction, layout and specification.
For a room combining workstations and other activities, start with a measured furniture plan and compare the whole building specification. Check the floor, framing, roof, glazing and insulation, and confirm the exact dimensions of your selected configuration before preparing the base.
Visit our Surrey garden building show site at Sutton Green, near Guildford and Woking to compare representative buildings and finishes. Contact us before travelling if you want to see a particular Winchester model or feature, as we may not display every size and configuration.
Contact our team for advice or a garden room quotation around 7m x 4m. Include your intended use, maximum available dimensions, postcode and access measurements so we can help you compare suitable configurations.
Advice from Robin Antill, Founder, 1st Choice Leisure Buildings.