[10u152]

I should have anticipated that question!

Essentially because nobody was allowed to trim/maintain the trees due to it being a natural habitat. It's nice to look at but when a 60m tree falls in a storm and wipes out your house it's not great. The reserve was also on the north side of the property and down here in the southern hemisphere that means that every year as the trees grow your house gets more and more shade with accompanying maintenance issues.

I should add that people may weigh that up and be happy to live there, but people should be aware of the risk/benefits before they buy. Natural light/property orientation and shading is a major issue that most people forget about.