4m Wide Garden Rooms | Garden Offices

Our 4m wide fully insulated garden rooms make the perfect garden retreat. The insulated walls, roof and floor combined with double glazed windows ensure maximum heat retention. So even when it's cold and wet outside, you can sit back and relax in your cosy garden room.

Personalise your insulated garden room by adding internal walls and choosing where you want the doors and windows to go. Create a custom fit for your garden.

One valued customer says of their 4m wide building:

"Love my garden room. Really comfortable and looks fantastic. The finish is superb, I didn't expect it to look as good as this. I'm not normally one to gush praise about a company but I can't recommend Waltons enough."

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Free Delivery | 4x3m Insulated Garden Rooms

£8,059.99

2 Reviews

Create your dream garden space with a 4m x 3m insulated garden room. Home office, entertaining space or studio, the choice is yours! Year round use, free delivery.

  • Free UK Delivery *
  • 10 Years Anti-Rot Guarantee
  • Interest Free Credit Available

Free Installation | 4x4m Garden Room | Garden Studio

£9,229.99

1 Reviews

Make the most of your outside space with a fully insulated garden room, which will keep you warm in the winter and cool in the summer!

  • Free UK Delivery *
  • 10 Years Anti-Rot Guarantee
  • Interest Free Credit Available
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Imperial Size

Cladding Style

Roof Type

Door Style

Building Type

Metric Size

Under 2.5m Tall

Price Range


Perplexed by insulated garden rooms?

If you want to make a fully informed decision before taking a look at our insulated garden rooms, our informative guide is here to give you a helping hand.


View our insulated garden room guideā€¦


4m wide insulated garden rooms

Cheaper than moving house, and easier than an extension, a 4m wide insulated garden room gives you the extra space you really need.

If you're looking for a home office, garden den, studio or place to hang out, these buildings are perfect. Fully insulation and double glazed, they're built for year-round use - and you can get mains electricity installed by a professional quickly and easily

Free delivery and installation take the headache out of buying a garden room, and you can customise where doors and windows go (and even how many doors and windows you have).

Designed with a high-quality, contemporary finish, you'll have a building that's practical and easily decorated to your own taste and style.

Planning permission isn't normally required with these buildings as they're under 2.5 metres, but always check with your local planning department, just in case there are special restrictions in your area.

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