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A 7m x 4m garden room provides a substantial 28 square metre nominal footprint for home working, hobbies, exercise or creating a genuinely multi-purpose room away from the house. At this size there can be space for several workstations, generous storage, seating and separate working or leisure areas within the same building.
I’m Robin Antill, founder of 1st Choice Leisure Buildings, and I’ve worked with garden buildings since starting Marina Sheds in 1979. Together with my son Craig, who studied carpentry at Guildford College, we use that experience to help customers compare actual dimensions, construction, insulation, glazing and layout before making a substantial purchase.
If you genuinely need a building close to 7m x 4m, our Platinum Winchester range is particularly relevant because it offers substantially greater size and design flexibility than our smaller Platinum models. Browse the options below or explore our complete garden rooms and garden offices range.
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.
Need advice? Our experienced team can help with your 7m x 4m garden room specification, insulation, glazing, base requirements, installation, bespoke design and planning considerations before you order.
| 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. |
A true 7m x 4m garden room has a nominal footprint of approximately 28 square metres, roughly 23ft x 13ft. That is a substantial amount of space and gives you considerably more freedom than a conventional compact garden office.
The finished internal dimensions will be smaller because of framing, insulation and internal lining. It is also important to understand that not every building displayed within this size category measures exactly 7m x 4m, so always check the individual model dimensions before arranging furniture or the foundation.
Yes. A 7m x 4m garden office can provide a substantial professional workspace for several people. There can be room for multiple desks, office chairs, storage, printers and a separate meeting or seating area while still retaining comfortable circulation space.
With a room this large, I recommend planning the furniture before finalising the doors and windows. Think about computer screens, natural light, electrical sockets, internet equipment, cupboards and the routes people will take through the room. A well-planned large office can work considerably better than simply choosing the maximum possible floor area.
Yes. A 4m x 7m office can accommodate several workstations depending on their size and the amount of storage and equipment required. Two people can have extremely generous workspaces, while three or more desks can also be practical with a carefully considered arrangement.
Do not judge capacity purely from the square metre figure. Large desks, office chairs, filing, monitors and meeting furniture can occupy space surprisingly quickly, so measure the furniture you actually intend to use before ordering.
The descriptions 7m x 4m garden room and 4m x 7m garden room describe the same nominal floor area, but the orientation matters. The position of the seven-metre side, entrance, glazing and roof can affect how the building sits within your garden and how furniture can be arranged inside.
Always check the individual product drawing rather than relying on the category name alone. On a room of this scale, moving doors or windows can substantially improve the internal layout, and selected ranges allow these details to be altered.
No, and this is particularly important on this page. The 7m x 4m category brings together buildings that may be suitable for customers looking for a large garden room, but the individual models have very different maximum dimensions.
Platinum Fleet and Odiham currently extend to approximately 4.8m x 3.6m, while Highclere reaches approximately 4.8m x 4.2m. These can be excellent large garden rooms, but they are significantly shorter than a true seven-metre building.
The Platinum Winchester Apex, Winchester Pent and Winchester Transverse extend to approximately 8.4m x 4.8m and are therefore the current ranges I would look at first if you genuinely require something close to 7m x 4m.
If getting close to seven metres in length is important, I would concentrate particularly on our Platinum Winchester range. Winchester offers a much broader selection of dimensions than Fleet, Odiham or Highclere and is available in Apex, Pent and Transverse designs.
Winchester also provides considerable flexibility over doors, windows, cladding and layout, with a full insulation and internal lining option available. That combination of size and customisation makes it especially relevant when you are planning a substantial office, studio or multi-purpose garden room.
If you intend to use a room of this size regularly throughout the year, I would strongly consider insulation. However, I would not choose a building simply because the word “insulated” appears in its description. Compare what is included in the walls, floor and roof together with the doors, glazing and internal finish.
Fleet and Odiham are fully insulated Platinum models but do not reach anything close to seven metres in length. For a larger room genuinely approaching 7m x 4m, Platinum Winchester is more relevant and can be specified with a full insulation and lining package. You can compare the wider specifications on our insulated garden rooms and offices page.
I’m Robin Antill, founder of 1st Choice Leisure Buildings. I left school at 15 and started my own garden building business in 1979, trading as Marina Sheds. In those early years I made garden buildings, sold them, delivered them and dealt directly with customers, so I learnt to look at how a building is actually constructed rather than simply how attractive it appears in photographs.
I sold Marina Sheds in 1990, although unfortunately I did not receive all the money I was due from the sale. It was a difficult business lesson, but it did not end my involvement with garden buildings.
By 1992 we had expanded beyond traditional sheds to include summerhouses, garages, garden rooms and log cabins, and that broader direction led to the name Titan Garden Buildings. My son Craig joined me in 1992 after studying carpentry at Guildford College from 1990, bringing his practical carpentry knowledge into the family business.
We sold Titan Garden Buildings in 1998 and in 2000 formed 1st Choice Leisure Buildings. Rather than being restricted to one manufacturer’s products, Craig and I wanted to use our experience to select quality garden buildings from different manufacturers and give customers a genuine choice. Craig now runs the day-to-day business and I continue to support him and the team whenever required. You can read more about 1st Choice Leisure Buildings and our history.
After working with garden buildings since 1979, I’ve learnt that two large buildings can appear very similar online while differing considerably when you compare the framing, cladding, flooring, roof, glazing, insulation, doors and internal finish.
A garden room around 28 square metres is a substantial purchase, so I would look beyond the headline price. I don’t believe bigger or more expensive automatically means better. The right building is the one whose size, specification and layout genuinely match how you intend to use it.
A true 7m x 4m footprint provides around 28 square metres compared with approximately 24 square metres for a 6m x 4m room. The additional four square metres comes from another metre of length and can provide useful room for an extra workstation, more storage or clearer separation between office and leisure areas.
If you do not genuinely need the additional length, a 6m x 4m garden room or office already provides a substantial workspace and may make better use of your garden and budget.
Sometimes additional depth is more useful than additional length. If your furniture or intended use requires greater front-to-back space, compare the proportions rather than concentrating only on the total square metres.
Our 6m x 5m garden rooms and offices category is worth comparing if a deeper footprint better suits your workstations, gym equipment, furniture or multi-purpose layout.
Selected bespoke ranges can incorporate an additional storage section or separate room. With a building around seven metres long, this can work particularly well because part of the footprint can be allocated to bicycles, garden tools or equipment while retaining a substantial clean office or leisure area.
If separate storage is important, discuss it before ordering so the internal division, external doors, windows and overall dimensions can be designed around both uses from the outset.
A large garden room needs a firm, flat and level foundation suitable for the exact building. Do not construct the base from the nominal 7m x 4m category size because the products displayed on this page vary considerably in their actual dimensions.
Always use the manufacturer’s precise measurements for the building you order. Our garden room base guide explains concrete, paving slab and timber subframe options and why getting the foundation right is especially important for a large building.
Access deserves careful consideration on a garden room of this scale. Think about gates, side passages, walls, steps, parking and the route the building components will need to take from the delivery vehicle to the installation position.
If access is restricted or unusual, tell us before ordering. It is much better to identify an installation issue at the planning stage than when a substantial garden room is due to be assembled.
Even after more than four decades around garden buildings, I still recommend seeing them in person whenever practical. With a substantial room, viewing representative buildings can help you understand the scale, construction, glazing and differences between specifications much better than photographs alone.
You can visit our Surrey display site at Sutton Green Garden Centre, Whitmoor Lane, Sutton Green, Guildford, GU4 7QA. We cannot display every model in every size, so please contact us before making a special journey if there is a particular Platinum Winchester garden room you want to inspect.
A true 7m x 4m footprint covers approximately 28 square metres, roughly 23ft x 13ft. Exact external and finished internal dimensions vary between individual models, so always check the product specification before ordering.
No. Fleet and Odiham currently extend to approximately 4.8m x 3.6m and Highclere to approximately 4.8m x 4.2m, while Winchester extends substantially larger. If you specifically need close to seven metres in length, Winchester is the range I would investigate first.
Yes. A room genuinely close to 7m x 4m can accommodate several workstations together with storage and potentially separate meeting or seating space. The final capacity depends on your desks, equipment and layout.
Yes. Platinum Winchester can reach dimensions suitable for a large room around this size and can be specified with a full insulation and internal lining package. Check the precise building dimensions and insulation specification before ordering.
I would look particularly closely at Platinum Winchester because its available sizes extend to approximately 8.4m x 4.8m and it offers greater flexibility over dimensions, doors, windows and layout than the smaller Platinum ranges.
Yes. The large footprint can work well as a studio, gym, games room, hobby room, entertainment space or a combination of office and leisure uses, depending on the layout and specification selected.
1st Choice Leisure Buildings is a family business backed by my first-hand garden building experience since 1979 and Craig’s carpentry training and industry experience since 1992. With a room of this scale, that experience helps us explain which ranges genuinely reach the dimensions you need and advise on insulation, layout, base requirements and practical installation rather than simply treating every product on the page as identical.