The portfolio pretty diverse in size (2-9 unit) and condition.

You can make minor adjustments based on the type of appliances (dishwasher, clothes washer and dryer, air conditioning, etc.) and the size of the rental.

So I think it just depends on what the board and community members are willing to take on vs the property management company but they certainly come in all shapes and sizes.

Thanks to plenty of smart people here on BiggerPockets, I have learned that it may be possible to offset a portion of this unexpected higher W-2 income with the purchase and "active management" of a STR. 

Some lenders have minimum size restrictions.

The magic formula is portfolio size x time.Selling does not move you forward.

Accelerated Wealth Building: Room by RoomHouse hacking allows you to tap into a unique source of income by renting out portions of your home.

Diversify Your Investments: Allocate a portion of your equity to different types of investments.

Depending on the project's size, construction might take around a year.

And, yes also to the HVAC- worth doing if it is that old, depending on the size of the house, it may only be $5000 to $10,000, and the new ones that are energy-certified will give you a tax credit, as well- not to mention, these will also help you sell our property faster when it is time to sell, as these will already be 'done'- not to mention, the new HVAC system will save your renters money every month in energy efficiency!