Hi Peter, The lease is the guiding document.

There is no form or document that is so carefully worded that would allow the release of the information."

Be sure to document any changes in writing and have both tenants sign the new agreement.

Make sure to document everything and handle the transition smoothly, allowing the responsible tenant time to decide if they want to take on the lease alone.

The HUD is a legal document...but OK, you can claim it's bunk if you wish as I know it makes you feel comfortable.

You can allocate expenses to each property/LLC during your accounting processes, but make sure to maintain clear records and documentation for each expense related to the specific LLC.Detailed Tracking: As you scale up, accurate record-keeping becomes crucial.

Current systems and tools:- Assistant to manage payments, invoices, ensure rents come in and chat with tenants for issues- Melio for vendor payments- Baselane for banking - separate accounts for each rental and deposit- Google sheets for Income and Expense reporting- Azibo for rent collection automation with late fee automations- Drive for my leases, SOPs, and documentations of tenants move in/move outGoals of improved system:  ensure I have a read out of how each property is preforming month over month, check on big expense items, ensure vendors get paid, mortgages get paid and rent is coming in, generate APY on float and savings for any big CapEx that comes up, and make my life easier come tax season.Is there a single software people use or what do you do for your business systems to optimize all of this?

Here's what comes to mind for me- Documentation is key: Gather all relevant documents, including permits, inspection reports, and the county record of the septic system installation.- Consult with a real estate attorney: While you're right that legal fees could exceed $6k, a consultation could provide valuable insights on your liability and options.- Review your insurance policies: Check if your flip insurance or any other policies might cover this type of situation.- Communicate with the county: Try to negotiate with the county officials.

Under the IRS rules, a person  qualifies as a real estate professional if: (1) more than one-half of the personal services the taxpayer performs in trades or businesses during the tax year are in real property trades or businesses in which the taxpayer materially participates, AND.....(2) hours spent providing personal services in real property trades or businesses in which the taxpayer materially participates total more than 750 during the tax year.Like @Greg Scott and @Russell Brazil mentioned above, I don't believe that you would qualify as a REPS, but if you are going to try it, make sure you document it very well (i.e. with some kind of proof, like time cards, mileage forms, and/or receipts, etc.) so that just in case you do get audited, you at least have something to provide to the IRS agent. 

Lenders who understand and specialize in such properties can be more flexible with their criteria.One approach is to ensure you provide comprehensive documentation on the property's potential and zoning specifics.