Depending on your goals and how you are buying your properties you may notice that certain areas are difficult to cash flow in NH depending on your strategy and what type(s) of properties you are looking at. 

Depends on how much you are raising, but have you been able to consistently earn money in waht it is you are trying to do?

Just depends upon the situation I guess! 

Depending on your income level, you may be able to take some losses on your return.

The cost of setting up an LLC can be about $500-$800, just depends on the state and what benefits you want for your business.

Days on market are around 80 days on average, depending on the area.

From the numbers perspective it seems like it can pencil out depending on the rehab budget. 

Depending on the value at the time of death and your basis you may need to file a gift tax return.I would speak with a CA attorney to determine the best type of deed to file and a tax professional to gather more information.

I would like to pull out equity from the homes to build either a house on each or an ADU (they are zoned multi-family) depending what makes the most sense on returns and what is feasible.

Some good advice above- it really depends on their "need" for the cash.They could always turn it in to an investment property and eventually do a 1031, leaving a legacy for their kids some day.