You're responsible for your lease contract, policy and procedures, but the site takes care of exposure and booking. 

@Sabina HasanThe asbestos siding is not a problem unless you are drilling or cutting it (making it friable) ... it is also one of the easiest asbestos products to either abate (aka: remove) or encapsulate (cover with insulation and new siding ... though this does not remove the risk of exposure if holes are being drilled through the new and old siding.I'd be more concerned about the electrical and radon.  

Being on only 1 site, is reducing you opportunity to obtain name recognition and exposure. 

It is more exposure for the real listing agent, so they usually do not mind.

The two most common exposures in a house are paint and lead leaching from the water system (see Flint, Michigan).

These values are important because:- you can roll the raw land value into a joint venture with your developer partner; this will be considered your equity in the deal (assuming the land is free of any mortgages) and your partner should inject cash equity into the deal (an amount that must be negotiated and must be sufficient to ensure the developer is motivated to perform)- a lender will provide financing and base their LTV exposure on serviced land value (the higher the value, the more a lender will be willing to provide)These values can be determined using direct comparables or through a residual analysis.

For your sixth property, create a new LLC and keep adding equity (properties) until you reach the equity limit you have established for each LLC.If a tenant lawsuit is successful, your exposure would be limited to the $250K equity held by the LLC being sued.  

@Jerry Batista besides posting here, which is definitely good exposure, you could also try attending a local real estate group such as RIREIG which meets monthly in Warwick or Black Diamond REI which meets twice a month in southern Mass.Sometimes those meetings have times when attendees or members can announce things, so you might connect with people that way, or just in the freer networking that happens before or after such meetings.If you have a few compelling case studies (past successes) you could even talk to the people that run the group about possibly doing a presentation at a future meeting.

Owners of pre-1978 rental housing and childcare facilities shall take reasonable care to prevent exposure to, and the creation of, lead hazards.

It’s possible the full sun exposure heats them just enough to dry the moisture before you notice it.I’d also recommend opening the walls below the window you know has water.