I don't see any big flag on them but at the same time the number should they shared with me are not really going to make anyone jump on them.

It is however a red flag that the seller is offering you seller financing in this strong market. 

These fancy situations where the seller carriers some, the bank comes up with some and you come up with 15-20% I've never actually seen but some of the folks on BP will swear it's a thing. 

Mario,Most insurance carriers will not accept this type of breed under your landlord insurance, so please check there first. 

Once any of the detailed signal a flag it's no longer a happy harmless "Just a UCC filing" and as it states can enforce "security interests" as per the UCC rules.

It is home to the six flags discovery kingdom theme park if that jogs your memory at all.

I would be proactive about it, you need to shop before they non-renew you... that way you can honestly answered "NO" to the question, "have you ever been canceled or non-renewed for any reason" If you answered yes, you would then have to disclose the issue from the old carrier and then the new carrier would probably want you to add the stairs just to be safe. 

I also heard that using the words "credit" or "repair" in the addendum could signal a red flag to a lender.

You’re seeing a ton of red flags, so take action ASAP or live with the terrible outcomes this is sure to provide.

On top of the LL approval there are often clauses stating that any profit earned in a sublease must be split 50/50 with the landlord and any attempt to strike the language is generally a red flag.