Hi Abi. We bought our first investment property (in Calgary) in Feb 2021 (1956 bungalow) and as people are saying most homes of this vintage have asbestos. That being said, if it's not disturbed, you don't need to worry about it (but this will add to the demo costs when you gut / rebuild. In our primary residence, we had the seller remove the asbestos in the attic as part of the contract because we knew the soffit venting wasn't sufficient and wanted to fix that. Regarding sampling - if you want to negotiate this with the seller, you can get samples but for attic insulation in Alberta, any vermiculite in attics for certain years it is ASSUMED to have asbestos and testing isn't really needed. However, if you are demo'ing on your own and can prove that your insulation is "asbestos free" then sampling can be in your favour. WISE ABATEMENT in Calgary (Jason is the owner) does great work.
In terms of the abatement process. Find a good abatement contractor, have them provide a scope / description of work to be done. Ensure you also arrange air quality sampling after the work is done to make sure their are no fibres present and a signed air clearance report should be provided to you. If you trust the company, they can do it or you might consider a different company to do the air sampling.
Regarding advice, really do not underestimate your montly / annual costs - especially for repairs (operating and capital). We did the full calculations with capital and operating maintenance expenses and although we've only been running for a few months, our cashflow is either zero or just below - partly because we have been trying to be pro-active about taking care of some of the important maintenance stuff up front.
For your zoning, not sure if you plan to change from MC to residential but I would say leave your zoning as this has best future investment value? Most people want to move from single residential to multiple to commercial - seems like the property you want is already there.
Finally, if the property has been on the market for more than a week, insist on making the sale conditional upon inspection. Some properties are priced to the point where they are bought without inspections - but this usually happens within days (or hours) of it being listed. Hopefully you have a great realtor to work with who can help you negotiate an attractive offer that protects you.
For our property, we were able to negotiate a significant reduction on our initial offer after the results of the inspection...
Good luck!!