Back in April (the 1st no less) the Property pages of the Luton Herald & Post newspaper had an advert for a house for sale on the Old Bedford Road in Luton that had a 'feature golf lawn' - a Putting Green - in the back garden!
A quick Google Search found a website showing the property.
'Only' £625,000 for a 3-hole Putting Course!
If you haven't got that much to spare, then just over the road are a Crazy Golf and Putting Course. These two were the 18th and 19th played on the Crazy World of Minigolf Tour.
If you're in Luton there's also a good little Minigolf course and Putting Green at Tea Green Golf at Wandon End.