Two great options – one right answer for you
When clients come to us saying they want their own gym, the first question is always the same: garden container or indoor conversion?
Both are excellent. But they suit different people. Here’s how to choose.
Container Gym – what it is and who it’s for
A container gym (like our Gym Box) is a steel module placed on your property. It arrives ready-to-use: insulated, heated, lit, floored, equipped.
Advantages:
- Completely separate from the house – no noise, no mess, no family disruption
- Year-round use – heating keeps it warm in winter, AC cools it in summer
- No planning permission in most cases – treated as a temporary structure in many countries
- Resale value – adds tangible appeal to your property
- Faster to set up – from order to first training: 8–12 weeks
Drawbacks:
- Needs garden space (minimum 8×3 m footprint)
- Higher upfront cost than a basic home conversion
- Requires a foundation (simple concrete pad)
➜ Ideal if: You have a garden, want full separation from living space, and value year-round reliability.
Home Gym Conversion – what it is and who it’s for
A home gym conversion means fitting out an existing space: a garage, basement, spare room or loft. Gym Assistance handles the full design and installation.
Advantages:
- Uses space you already have – no footprint impact
- Lower entry cost (basic garage gym from ~£5,000)
- Closer to living quarters – easier to pop in for a quick session
- No need for outdoor foundations
Drawbacks:
- Climate control more challenging in older garages/basements
- Sound travels more easily through a house
- Equipment choices limited by ceiling height (especially for racks)
- Resale value addition is less clear-cut
➜ Ideal if: You have an underused garage or basement, budget is a priority, or you don’t have outdoor space.
Side-by-side comparison
| Factor | Container Gym | Home Conversion |
|---|---|---|
| Space required | Garden 8×3 m min | Existing room |
| Entry cost | Higher | Lower |
| Installation time | 8–12 weeks | 1–4 weeks |
| Climate control | Excellent (built-in) | Varies |
| Planning permission | Usually not needed | Usually not needed |
| Separation from home | Full | Partial |
| Expandable | Yes (add modules) | Limited |
The honest answer
If you have the garden space and budget: choose the container gym. The separation, climate control and year-round reliability make it the better long-term investment.
If space or budget is the constraint: a well-designed home conversion can be excellent – and Gym Assistance has delivered dozens of them that clients love.
Not sure? Book a free consultation and we’ll help you decide.