Building an outdoor bike storage solution

Right. I'm now being told I can't keep my bikes inside any more. Our current (rubbish) wooden sheds are not secure enough for my bikes, so what do I need to build to make the bikes secure? Has anyone here built an outside bike store for 3/4 bikes plus tools, kids bikes, periphery, porn collection etc?

Advice etc much appreciated.

FJ

Who is telling you you can't keep the bikes indoors?
If it is your wife then you're screwed I suppose, but if it is a landlord, they may have no right to ask you to move them. I had a similar battle with my landlords, which resulted in the officious little witch who was threatening to seize our bikes being replaced.