What are hutch extensions and add-on runs?

Hutch extensions and add-on runs are modular sections that attach to an existing hutch or run to increase the total living and exercise space. They typically connect via a tunnel or pop hole and can be added one section at a time as your rabbits' needs grow.

Do extensions work with all hutch brands?

Not always. Extensions from the same manufacturer are usually the best fit, but many use standard pop hole sizes (typically 15-20cm diameter) that allow cross-brand connections. Always check the connection dimensions before purchasing a third-party extension.

How much extra space should I aim to add with an extension?

The RSPCA recommends a minimum combined living and exercise space of 3m x 2m x 1m for a pair of rabbits. If your current setup falls short, a run extension of at least 1.8m x 0.9m will make a meaningful difference to your rabbits' quality of life.

Rabbit Hutch Extensions & Add-On Runs UK (2026)

If your existing hutch is fine but the exercise space isn’t, you don’t need to replace the whole setup — you need a rabbit hutch extension. These runs are designed to either butt up against an existing hutch or function as a permanent attached run.

How to Choose a Rabbit Hutch Extension

Before buying, check these three things:

Connection size: most extensions connect via a pop hole (the opening in the hutch front). Standard pop holes are 15–20cm wide. Measure yours before ordering — a mismatched extension means drilling a new hole or returning the product.
Same-brand fit: extensions from the same manufacturer as your hutch are the safest bet (Hutch Company runs with Hutch Company hutches, PawHut with PawHut). Third-party extensions can work but require checking panel heights match.
Length: the RSPCA minimum exercise area for a pair of rabbits is 3m × 2m combined. If your hutch is 5ft (150cm), you need at least 150cm of run attached to hit the 3m target. Aim for 6–8ft (180–240cm) of run extension to give meaningful exercise space.

The Hutch Company 7.7ft XL Canterbury Folding Run

The big one. 7.7ft of attached run space — the upper end of what rabbits can usefully use. Same fold-flat hinges as the smaller Canterbury, just bigger panels. Pairs naturally with the Kendal and similar premium hutches.

Best for: bonded pairs, owners upgrading from a too-small original run.

Dimensions: 235 × 120 × 48 cm
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Deuba Open Enclosure Steel Run with Sun Cover

Steel frame instead of timber — lighter to reposition daily and properly rot-proof. The included sun cover saves you buying one separately, and the open enclosure design works well as a daytime grazing pen.

Best for: owners who move the run around the lawn, summer use.

Dimensions: 94 × 53 × 5 cm (folded)
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The Hutch Company 4ft Chartwell Rabbit Run

The matched companion to the Chartwell hutch range, but it works with most flat-fronted hutches. 4ft is enough for daily exercise when paired with a properly sized hutch.

Best for: Chartwell owners, anyone wanting a tidy matched look.

Dimensions: see Amazon listing
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Related: All Runs · Hutch & Run Combos