Hangarage costs are skyrocketing around Australia, significantly since airports were "privatised". Most second level major city GA airports seem to have fallen into the hands of developers, who will pay lip-service to their contractual requirements to maintain a airport, but only just. My hangar and offices in Qld had a 68% increase in charges earlier this year, but no client downstream of me will accept such an increase
A three bladed EC120 will take up double the floor space of a two bladed B206, unless you want to expose your pride and joy to damage from intermeshing blades with a neighbouring machine. Even a 206 on a trolley will take 60-100% more floor space than a 206 pushed in on its handling wheels.
Considering that hangaring an aircraft is recognised as adding 10% to any resale value, plus the protection that it affords your investment, it is a worthwhile and sensible cost to incur. We look at $A600 per month for a B206, and $A1000 for a BK117, as indicative cost in a capital city GA airport.
For comparison:
$A600 = £242
$A1000 = £403
H.