As for Alexandria specifically in terms of regulations don't take advice from a public forum - look up the laws yourself and make sure you understand them.

Publication 15, Employer's Tax Guide, says only this much:...Payments for the services of a child under age 18 who works for their parent in a trade or business aren't subject to social security andMedicare taxes...No definition, and IRS publications are not really law anyway.

Real estate syndication investing is still quite valuable as it can offer higher Returns than investing in public REITs but not as high returns as direct ownership and management of real estate by some experienced people, but with the benefit of being far more passive, than direct ownership/management. 

If you’ve got strong tenant demand, proximity to top employers, or even access to public transit, you’re laying a solid foundation.

Quote from @Samuel Pavlovcik: @Nicolas Tow Your Architect is correct that it sounds like the only option for you would be to obtain a Zoning Map Amendment to change to RT3.5 or higher.

This will increase the return above what can be obtained on a passive investment.The flipside of having the power to control everything is that it can be alot of work (and a full-time job if a person is putting in sweat equity).

Because of the nature of a tax lien, it would be difficult to obtain financing from a commercial lender secured by the tax lien itself.  

@Dave Bobka @Justin Arnold So, if an investor is looking for a larger, family style home for a Section 8 tenant that is dependent upon public transit, this would be a great property, wouldn't it?

@Kate Zieverink McMinn we just hosted a webinar with a friend in Orange County, CA that used to be a public works engineer.

I’ve received multiple quotes from insurance companies (mainly I would obtain the quotes myself).