The mortgage is a liability; however, they are taking on more debt, so it may be a wash, unless one takes out more than they have physically put in.That is true some gifting at a discount can help.

I physically will run out of money if this property keeps going at this rate.

If You don't want to physically maintain your investments and fix them up then maybe turnkey is an option for you.

If they are charging a management fee and than hiring a property management fee on top of that that is a no no but otherwise those are out of pocket costs since very few good syndicators are physically on site every day dealing with toilets because they have grown beyond that. 

Physical inspections would have shown the leaks.  

I use the physical address of the property as the name of the trust - i.e. - 123 Main St.

The reason I worry that it will plateau is that with everyone in the SF/Tech industry now working remotely, companies are realizing the insignificance of having people physically show up to an office.

As for ADA compliance, it depends whether the tenants have physical challenges. 

Typically, all or a portion of the deposit can be used for actual damages (nonpayment of rent or fees, or physical damage above normal wear and tear)Require Written Description/Itemized List of Damages and Charges:Interest or earnings on the deposit and any deductions shall be itemized and tenant notified by personal delivery, registered or certified mail. (§§ 46:8-21.1 (pdf))Record Keeping of Deposit Withholdings: No statuteReceipt of Deposit: Within 30 days of receipt of the deposit, landlord shall notify tenant of the name and address of the financial institution in which the funds are deposited, the current interest rate, and the amount of the deposit.

If their feedback is good, I'll submit an offer and usually I don't physically see a property until I am under contract and starting due diligence.