Canadian real estate investors can pick up properties pennies on a dollar provide you have proper training from Canadian real estate expert.

Not being properly permitted is a big issue, especially in town, when it comes to rebuilding on lots. 

Tax sales (at the courthouse) can be a little dicey with out the proper research.

How much easier can they make it for people, this is a no brainer, just need the right team to execute it.

The instruments are often not used properly and misunderstood by both parties.

The plow would need to be welded on so proper install is important.

:you cannot control the cleaning agents the tenants use.Shouldn't be a concern as long as you first warn them, and have a proper security deposit.

The point is, all modifications must be ratified by all parties, full signature and date somewhere otherwise the mods are not enforceable.Your problem is, if not properly ratified, what's the next step for you - - is it worth your effort to pursue further?

The rightful Owner might be better off just having it listed, to find an Owner-occupier who will pay the proper market value.

It's hard to work up enthusiasm for going and doing an estimate -which takes a good while to do properly - for an investor with an unknown track record.