The companies you mention have been around for a while and have stood the test of time.They have stood the test of time in a niche called "turnkey real estate" that has always carried a stigma.So I think that speaks volumes of their quality 👍Nobody is perfect and those that work hard, will eventually make a mistake.As long as the mistake is an "honest mistake".And being a turnkey provider myself for 10+ years now I can sure say that some investors can be a true pain in the A$$ and it feels like they look for drama/issues intentionally instead of smooth sailing lolWith that said, I suggest doing your online research and reaching out to the one that tickles your fancy the most.And then go from there.Wishing you much success.

i recently closed into a property which I bought from another investor who got it through a tax deed sale.

Going into a potential deal, I look at the track record of appreciation (sales comps) in the immediate area, not the general area, and based solely on properties that are within 10% higher/lower in sq ftg than the property I'm looking at.I have a goal of a specific number ()in dollars, NOT percentages) that I need to achieve in appreciation. 

This means they must provide credible evidence to support their claims and comply with all substantiation and record-keeping requirements mandated by the tax code.Despite the taxpayers' testimony that the RV served as a boat sales office and provided nighttime security, they failed to produce any records or documentation to substantiate these claims.

RealData offers both desktop and online versions of their software.PropertyRadar: PropertyRadar is a real estate data and analytics platform that provides tools for market analysis, property research, and lead generation.

Make sure that the property's value is in line with market trends and comparable sales in the area.

If your property is worth less than that, it could be a reason to make the sale.

From what I've read online, it seems I have to disclose this but what would happen if I don't disclose this to buyers?

Go to the sale and see what they sell for.   

Taxes are calculated on the annual sale installment gain.