They won a good portion of them that is now being used to fix/repair for all buildings & condos. 

A deal may have a good cap rate, but when you factor in repairs, acquisition costs, and debt service, you could still be under water. 

What is the service life on this piece of equipment.If it has capacitors the service life could be 10 years, or they may have a service life of more than that, but they don't live forever (what about repairs?).

Commissions would be 5% or $50k plus repairs, moving out my furniture etc.

I’m primarily in relatively upscale buildings which helps minimize my repairs and maintenance.

Every year realtor.com releases a Top Housing Markets report based on anticipated sales growth (inventory) and price growth (appreciation).

.- Build Relationships with Vendors: Getting quotes from local contractors or vendors for common maintenance or repair tasks can give you a clearer picture of recurring costs.

I'm also finding that a single large repair can wipe out a whole year of income, making me wonder if cheaper cashflowing properties is the right play. 

Updating and repairing.

Make sure you have financial reserves for repairs/maintenance/CapEx I would personally sell the SFRs - slow market right now, keep that in mind with your selling price expectations.