For recent purchases: less than 3 years, you probably have to grow with them and think about how can you maximize returns: maybe ADUs, or Coin-laundry or e-pay, renting space on the property for storage, air b and b or mid term rentals, splitting the lots, Tic sales etc... or value add to increase appreciation faster!! 

They also will have a setting where one SSID can be shared by both bands.Another rule of thumb that I use (both in my rentals and in my personal space) is to buy new modems about every 3 years. 

You can avoid alot of issues by sending out an email for example if you have a materials delivered and the guy is temporarily blocking the driveway or taking up a space.

The smaller multifamily space is a great way to start out!

Choose the right property, manage tenants, and consider space considerations.

Often overlooked is the premium for storage space in the city.

If the remediation devices intrude significantly into the livable space, that will probably detract from value. 

Unforuntately I've been in this position in the past and it's better to keep the partnership in a good space than to force your hand on an issue like this.

He flew a drone and saw that there was more roof work than I felt comfortable taking on, ontop of some code violations in one of the units and exposed knob and tube wiring in the attic space.  

Consider how it will be used and if the floor can function as storage, rec room, family room, extra sleeping space, etc.From what you've shared, my concern would be the "hills" that may cause a tripping issue.