Skin heating is the usual problem: repeated heating eventually takes any hardening out of the material leading to failure. Plus, hydrogen is very bulky. That airframe doesn't look large enough. You'd need a denser fuel.

Let's make it more upsetting: Consider that if a buyer is also a realtor, they get to self-schedule a showing and wander around your house unescorted without an agent. I had this happen to me. Did I mention there are a hundred thousand freakin' realtors in this country?

There are over 100,000 Realtors in Canada. The cost to obtain and maintain a license is not that much.

>Industry needs better oversight, expert says

Obviously! RECO does not do a good job at oversight. But the better question is why does the Real Estate profession even exist in the modern age? They don't provide much service for the enormous fee they charge.