Please get some help with this. 

Please tell us more about this.

Hey @Michael W Hauck, welcome to the BP Forum! 

Any further detail is because your business wants to see more detail.DISCLAIMER: I am not an accountant or a bookkeeper, nor do I play one on TV. 

Places with more STRs will provide a more accurate report based on numbers.One with fewer STRs will force the algorithm to pull data from outside your exact filters.

I've got about $525K in equity in the property, but lenders have told me that I cannot get a HELOC to access that equity for additional purchases because the duplex was financed as an investment - they have said TX law dictates that HELOC can only be used on primary residences.

If you actually need to do permits on everything or just structural fixes and big items (I.e. roof, siding, windows, etc.).

Are they more/less desirable than a typical owner-occupied note?

Welcome to BP.

I would NOT advise a client to ever purchase a tenant occupied property with uncooperative tenants unless they are very experienced investors or the property purchase price comes at a discount that reflects this fairly major issue they are conveying to you with the sale.How long has this place been on the market?