Using my Sherlock Holmes-like powers of reasoning Watson, (Topdad) I deduce that there is a strong possibility, nae, a probability, but not a conclusive certainty, that you may, or may not, live at a house that has the street number twelve, being numbered in the the decimal numeral system (also called base-ten positional numeral system, and occasionally called denary).
In making this assumption, and given the normal method in the UK of labeling even numbered dwellings on one side of the road and odd numbered houses on the other, it may be assumed that your house is approximately the sixth one on that side of the road, unless unconventional numbering has been used in your street; in which case your abode may well be the twelfth of such dwellings in that road.
On the other hand, you might have knicked wheely-bins from somewhere else!
Cool barbecue/oven/fireplace by the way!
