Section 12

When any structure or valuable tree or plant is reduced in height or removed, or any expense is reasonably incurred in compliance with any order or the conditions of any order under section 9, the owner or occupier of the land shall, unless such structure was erected or such tree or plant was planted in contravention of any order under section 9 or of the conditions imposed by it, be entitled to compensation to the extent to which he has suffered damage or loss by reason of such reduction or removal or has incurred such expense.