What is your situation storage space wise??
I ask as I too don't have a garage...not allowed one on my grade 2 listed property (the garden walls are listed and one would have to come down to put a garage in) no shed as the driveway is a goat track slope...so I bought a 2.7x1.4m storage shelter from Protech Shelters (now bust).
On getting another bike and finding a larger shelter was required to house the two I got a 3x2.5m one from Dancover
http://www.dancover.co.uk for £200 odds - sounds a lot, but its ride in, ride out for two bikes, big enough to use as a workshop, hasd power, light and, if its the same as my original one, will still look like new in 5 years time. Dancover also do a similar model to the one I got from Protech for about £150odds.
I would give away my original one, but the Mrs has offered it to her mates as a log store...