How old is your cat?
Kitten (under 1)
Adult
Senior or stiff
Weight:
4.5 kg
Body length, nose to base of tail:
45 cm
How many cats share the tree?
1
2
3 or more
How much floor space can you spare?
A corner (about 40 × 40 cm)
A bit more (about 50 × 80 cm)
Plenty
Perch size
Perches needed
Gap between steps
Stability
A rule-of-thumb planner, not a vet's assessment. The drawing is simplified and not to scale.