However, several random websites still have my original listing with the $30,000 price as an active listing and my phone number. 

I am actively working on a buyer and a personal money lender list. 

Right now treating it as interest but would like to make it active income to do a solo 401k .

Stay in the same housing plan, school district, etc.Don't just look at sold comps, also look for active, contingent, and under contract listings.

We have worked with Investors and they are never really married to their Realtors unless you happen to connect with somebody looking to do a long-term hold and actively trying to find a good realistic deal. 

Uses the syndication depreciation losses to help offset active incomeI did read your post mentioned above @Michael Plaks which is very informative.

Avoid "passive" investments, focus on "active" investments to deter risk and really prioritize quality over quantity.How much funds do you have to get this started, you'll need 10x what you have to get remotely where you want to be.

Problem is only "RE pros" get to do it.There are 3 income classifications in the US - Active, Portfolio, and PassiveActive income is income derived from your job, or normal trade or business.Portfolio income is derived from bank instruments - stocks, bonds, etc.Passive income is income earned from investments.Active losses can wipe out both passive and portfolio income, but it doesn't work the other way around.Portfolio (capital) losses are limited to $3,000 annually.Passive losses can only be offset by passive gains.Real estate rental income by its nature is deemed passive per IRC Sec 469One way to get around it is to become a pro - spend more than 750 hours or 1/2 your time in real estate.But most folks aren't real estate pros.

But we have a smaller one (1100 sq ft) in a lesser subdivision and not gatlinburg  that is getting tons of activity since we put it up for sale and it isn't complete. 

No matter the strategy so you can be ready in case anything happens where you lose your active income or a tenant moves out without notice whatever the case may be.