Yes you can find properties which you will be able to purchase, but ROI will be near zero or negative. 

You owe two taxes:A. capital gain tax on $150k ($500k sale - $350k purchase)  PLUSB. depreciation recapture on $100k of depreciation taken.Now, let's assume that you messed up somewhere along the way, and you only took $70k worth of depreciation instead of $100k.

TERMS- Deal Type: Seller Finance- List Price: $580,000- Purchase Price: $780,000- Seller Carryback: $693,000- Total Entry: $100,000 Breakdown: Assignment: $13,000 Down: $87,000- PITI: $2,657 Breakdown: Principal & Interest:: $2,000 Taxes: $464Insurance: $193- Rent: $5,250 ($750-800 per unit)- Amortization Years: 28.88- Interest rate: 0%- HOA: NONE- Balloon: NONE- EMD: $5,500- COE: Feb 12, 2025- Occupancy: Occupied, Occupants staying post closing- Title company: PROPERTY DETAILS:MULIT-FAMILY7 Units - 2B/1B per unit- Living sqft: 5,200- Year Built: 1940- Age of Roof: 1- Age of HVAC: New- Age of Water heater: New- Condition of Electrical: Good working condition- Condition of Plumbing: Good working condition

I just purchased my first duplex (only SFHs in my portfolio so far) and it doesn't have the gas/water split.

Quote from @Paul Whitehurst: Many will tell you to borrow money from Property A to purchase Property B, but that's known as over-leveraging and not recommended for a newer investor.

However, I don't like the fact that properties they will show me, they will have a financial interest in, because it could affect my purchase negatively. what are the pros and cons of going with an agent that requires dual agency vs. not?

If you are looking to just calculate profitability, set how much profit you want to make then:ARV - Purchase Costs - Holding Costs - Selling Costs - Desired Profit - Rehab Budget (including contingency) = Maximum Allowable OfferIF you cannot calculate those numbers, a spreadsheet isn't going to help you. 

Purchase price: $137,000 Cash invested: $90,000 Sale price: $285,000 This was a single family home in Bates Hendricks.

I have not every purchased property in Canada, but my wife is Canadian and I've seen some of the issues her family has had to deal with.  

Purchase price: $675,000 Cash invested: $250,000 Country estate with 2 houses.