Top 5 visible front garden mistakes in my neighborhood are:

5) Boat parts in number 42
4) Mischievous gnomes at number 5
3) The plastic well at number 17
2) Bonsai garden at number 3

and the winner is...

1) House named "This'lldoforus" at number this'lldoforus

That's written from number "cynicalaboutfrontgardens"