Is this something that I could househack or does it need to be purely a rental property? 

Take title insurance out of the equation and you'll need to find a lot of attorneys to handle the closing and I suspect they won't do it for free.Lastly, I believe a good portion of the agent's share of the title premium goes toward overhead, it's not pure profit. 

Many investors define the asset class purely by the age of the home:Class A: Homes built in the last 10 yearsClass B: Homes built in the last 10-20 yearsClass C: Homes built in the last 20-30 yearsClass D: Homes built in the last 30 years <<How old is you SF property?

This is purely a guess on how the site works, so I have now clue.At least in my area there is usually a phone number you can reach the realtor at or I just Google them. 

Or it purely doesn't matter at all at this time and roi should only be looked at before purchasing a new investment? 

If you're thinking of it purely for management and not as the deed holder, it might not add the protection you're hoping for.

3) do you want personal use out of it, or is this purely for investment's sake?

So someone who is looking purely to maximize potential return (and has unlimited time) is unlikely to find this a good fit.Hope this helps.

Keep track of what items are purely for the rental unit and what items are for both units.If it's an item that is technically for improvement of the whole house (landscaping, common area improvements, exterior siding/painting) you can only write off a portion.

This will be pure cash flow of 12% return per year.