If you have a property you feel is distressed, then dive deep into the local courthouse records to learn more (assuming that's public info in Montreal), then go out to the place yourself.

I also get them in our local neighborhood facebook groups.

I bought SFH through turnkey companies out of state, had a few SFH's locally managed by someone else and bought some small mulifamily properties and had a PM there as well. 

I took my knowledge andstarted working with local private people to fund fix & flip'sthrough the use of notes & mortgages.

Vinicius,Hi, best place to find local like-minded Investors is the local Investors Club. 

If yes, and if you do not have much experience yourself, I would engage a local civil engineer to guide you through the initial planning phases even before you get to design & construction. 

I need to keep everything very local for now, which is challenging, but I'm willing to face a challenge.

If it's feasible I always recommend to start investing locally and sourcing the deals, contractors and if interested manage yourself.

As far as getting best rents, I've seen professional photos make a huge difference and depending on your local market placing it all the typical property sites like Zillow, Trulia, etc.

Plumbing Inspector came out and failed the plumbers for some work they did and also dinged me on simple repairs/updates I was doing in the house.