Garden Dome Sizes: How to Choose

Start with the use, not the number

Picking the size is where most dome decisions are won or lost: too small and the space disappoints, too large and it dominates the garden and the budget. Here's how to land on the right one without guesswork.

A diameter means nothing until you know what's going inside. Work out the use first, then size to it:

• A focused single use: a compact office, a meditation or yoga space, a reading snug, or a small garden's centrepiece. The 2.7 m Mini does this nicely, and as it seats 4-5, a cosy table for four fits too.
• A proper room: dining for six to eight, a comfortable studio, a garden lounge or an occasional guest room. This is where the 3.5 m Standard, our best seller, comes in. It's also the usual starting point for a hot tub: check the tub's footprint against the floor area, and see our hot tub guide.
• Entertaining or multi-use: hosting groups of 12-16, a flexible space that's office by day and snug by night, larger gatherings or a bigger hot tub. Go for the 5 m Large.
• Commercial use: glamping units, dining pods, event spaces. Size to the format and consider running multiple domes. Extreme is our recommended specification for commercial use, and multi-unit buyers save on every dome from three domes.

GeoDomeX domes come in three sizes, from the compact Mini to the Large, so there's a size for a courtyard and a size for a crowd:

The Mini starts from £899 and the Standard from £999, each in Original, Ultra and Extreme specifications, while the Large comes in one maximum-thickness specification at £2,999. You can choose your size and specification on our dome page.

Then check it against your garden

Once you know the size the use wants, sanity-check it against the space:

• Measure the spot, and leave a comfortable margin around the dome: you want to walk around it, not wedge it against the fence.
• Mind the sightlines. In a small garden, the right-sized dome with clear panels keeps things feeling open; an oversized one closes the space down.
• Think about the base. The dome needs a firm, level area (decking, a platform base, a patio or a prepared pad) at least as big as its footprint, plus a little room around the edge; the Large sits on its own wooden decking base. Our foundations and bases guide covers the options.
• Check the height near boundaries. The Mini and Standard are 2.1 m tall and the Large 2.5 m, which matters if you're siting close to a boundary. Our planning permission guide explains the general rules, and your local planning authority can confirm what applies to you.

If the use wants a size your garden can't comfortably take, it's better to adjust the use than to cram in a dome that overwhelms the space.

Quick sizing reference

Treat these as starting points, and check the exact dimensions in the table above against your space and your plans.

A note on getting it slightly wrong

If you're genuinely torn between two sizes, the regret tends to run one way: people more often wish they'd gone a touch bigger than wish they'd gone smaller, provided the garden can take it. A little extra room makes a dining dome relaxed rather than tight, and a studio flexible rather than fixed. But never at the cost of crowding the garden; balance is the goal.

Frequently asked questions