Home Inspection Business: Has anyone ever purchased one? Any Advice?

I am not purchasing, but attempting to start one.

One point I would add is that you have a new generation of real estate companies are using data and other tools to buy real estate fast, upgrade them and then flip them. This might mean less of a need for an inspection service from the client side (as they will likely do this for them) but the emergence of the need for services like inspections from these large companies, so if you get the big contracts, might be a very interesting place to be at and to get recurrent revenues.
Having been an investor in an inspection business (although it was a car one) one more thing I will say, one of the parts we found was more challenging, in addition to managing large workforces, is normally the client acquisition bit particularly if you don't control it, as this is a business where people buy houses on average every 8 years (US) and the odds that they know someone else buying a house at the same time are low, so word of mouth is hard to use to build momentum, you're dependent in the likes of google and partnerships with realtors, etc, which may disappear or you may get priced out very quickly. So to make it a truly sustainable business your client acquisition strategy needs to be spot on (like most businesses, but particularly relevant on this one) and you should have some sort of long term differentiation/angle vs the competition.