Lower interest rate at 12% is $8,400 year ($42K for 5 years) plus his initial investment of $70K equals $112K.

I do not have to do anything right now, I just need to learn, wait for the right opportunities, or create them - for example by trying to use subject to and take over someone else's payments who locked in a lower interest rate from a few years ago. 

You'll have to read the details in your PPM and Capital Call notice but generally you send in more money to maintain or decrease, but never increase, your original position, It's not like putting money into a losing stock where you now own more of the company for a lower average price.You're far from the only person this has happened to.

The shares are represented by certificates sold to investors for the purpose of maximizing value and lowering risks of pooling payments on fixed assets, which allows for increased liquidity, thus aiding the total market.

They work for my mom because it is a lower commission split, I feel like I am struggling because I have no leads.

I think it was Airbnb that had suggestions for me to lower my pricing because they were scanning the competition (Booking.com in that scenario) and saw a lower price.  

In areas such as NYC the market tends to be a little lower, from what I understand.

CA has property tax rate that is a little lower than the median.

Long story short, you can, but since you are only targeting investors, your sale price will likely be lower than comps.Talk to a local agent about your local tenant laws and have them review their lease

PROS of a Solo 401(k) with no Custodian: 1) Freedom of checkbook control, ability to more easily move funds in and out of a bank account in the name of the Solo 401(k). 2) In some cases, lower fees. 3) Ability to more easily link your Solo 401(k) to bank account systems like rental property management systems, or if investing in real estate syndication platforms.