What I did is put stuff in garage for a month and discount rent for new tenant by $50 for first month to compensate for no access to garage.

If the buyer has access to other sources of cheap capital, lender will probably have to be happy with the lower end of your range. 

The contractor should have access to roofers, framers, concrete, pool, plumbers, electrical, tile, sheetrock, kitchen & bathroom installers, painters etc and should pull the permits.

Sadly I don't have access to the MLS system, so I can't pull actual comps yet. 

Do you have access to deal?

It's quite typical...someone trying to cajole a disengaged owner into executing a contract without an agent advocating on their behalf for their best interests, and then assigning that purchase contract to an end buyer  to get paid with minimal infusion of cash, and doing so before the clock stops ticking.

What’s unique is that the basement only has an exterior entrance so if I added rooms to the basement, they would essentially need to walk outside to have access to kitchen/bath/laundry.

@Jason McGrawMost sellers wont be open to giving your access to their records until you can show then you are a serious buyer. 

And perhaps then consider buying an investment property which would actually cash flow.If you do decide to keep the condo I would be very stringent in screening your tenants because you can’t afford to carry two mortgages if your tenants stop paying or to repair significant damage or they were to damage your home.

One strategy that Canadians have used is to tap into their home equity through a HELOC to get access to funds.