The minimum cage size recommended by the RSPCA for two guinea pigs is 120cm x 60cm (roughly 7.5 square feet) — but welfare-focused organisations universally agree: bigger is always better. Guinea pigs are active, social animals that need space to run, popcorn (jump with joy), and establish comfortable zones for sleeping, eating, and toileting. The most common welfare problem in guinea pig ownership is an enclosure that is too small.
Indoor vs Outdoor Housing
| Factor | Indoor | Outdoor |
|---|---|---|
| Temperature control | Stable year-round | Seasonal extremes — must manage |
| Predator risk | None | Foxes, cats, birds of prey |
| Social interaction | More — piggies become part of family | Less — unless garden is frequently used |
| Space | Room required indoors | Larger enclosures possible |
| Cost | C&C cages cost-effective | Wooden hutches more expensive |
Top Picks
1. Kavee C&C Cage — Best Indoor
C&C (Cubes and Coroplast) cages are the gold standard for indoor guinea pig housing. Kavee is the UK’s leading C&C cage brand, offering customisable kits that can be built to any size — 2×3, 2×4, 2×5 grids and beyond. Easy to expand, clean, and rearrange. No wire floor — solid corrugated plastic base protects feet. Vastly more space-efficient than traditional pet shop cages.
2. Chartwell 6ft Single Storey — Best Outdoor
Chartwell hutches are well-constructed from pressure treated Scandinavian Redwood with a waterproof roof. The 6ft single storey provides ample continuous floor space for 2-3 guinea pigs. Pair with a compatible run for daytime exercise. Available with weatherproof covers for additional UK rain protection.
⚠️ Safety Rules
- Solid flooring only. Wire or mesh floors cause bumblefoot (see our bumblefoot guide).
- No multi-level cages counted towards minimum space. Ramps and upper levels are enrichment, not substitutes for continuous floor area.
- Winter: Guinea pigs cannot tolerate temperatures below 15°C comfortably. Move outdoor piggies to a shed or car-free garage in winter, or bring them indoors.
For feeding your piggies, see Best Guinea Pig Food UK.
Part of our Guinea Pig Care Guide.
🏠 Recommended Guinea Pig Hutches
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