I'm curious to know how often property managers actively suggest value-add activities for properties (ie, building an ADU, remodeling, buy-fix-hold opportunities etc etc). 

- There's a logical reason when/why activity will pick up...wait for it...

Hi,I am active real estate investor.

I would be happy to introduce you to people who are actively doing this. 

I went actually on the street of the city I wanted to invest in and asked people just walking around about the city, what might rent, etc and found this method to be extremely beneficial I met some local real estate agents walking their dogs that gave me great recommendations and leads just because I asked them.The real estate agent son I met the other day has called my phone and is connecting me with a landlord that I really want to get into contact with for his building who already has tenants airbnbing at his location.I also found a Mentor (simply by asking around), which has offered to teach me all their ways, tips, tricks and so on as long as I help them stage, help them move items and so on.

While it is true that the time of year can influence market activity, as others have mentioned, there is usually a trade-off depending on the season.

Quote from @Jay Hinrichs: Bruce there is also that famous case in San Fran  in the Seacliff area of 5 to 30 mil homes and someone bought their right of way on a small private street and were trying to block them off and then of course sell it back to these folks.

If you want to drive streets and try to find it, that could work if you have the time. 

This will work for ordinary losses, but not from negligence or unlawful activity.

A real builder is supposed to do their own diligence and be savvy enough to know that access (legal access, not just does it abut a street) should be the number one thing they check first.