I would like to pass on a little bit of useful information for anybody thinking of converting their permit over to owner-builder. 1 - You will not be able to sell the property for a minimum of 365 days from the date of issuing of the CO. 2 - The property must be for the owner's own use and occupancy and not for sale or lease which means you will not be able to rent it out. 3 - The owner-builder must ensure that all employees working on the project have the required licenses.4 - The owner-builder must provide worker's compensation as required by Florida law.5 - To apply for the owner builder permit, you must physical visit the building department.There are others requirements and conditions, however these are the main items.

As far as refinancing, you can either do a conventional loan where they use your debt to income / DTI to qualify or you can use a DSCR loan which structures the loan off of the rent versus income ratio.More info on DSCR loans: DSCR loans won't use your income to underwrite the loan. 

Add in many/most jurisdictions are (I believe incorrectly applying the law) mandating the existing structure be rent controlled (assuming it is over 15 years old).The reality is virtually all RE investments will do better than adding an ADU.  

I’m currently looking into the best ways to structure guest payment flows to ensure legal compliance (that may restrict non-licensed property managers from collecting rent directly) and seamless operations.

One additional thought: a disregarded LLC might work for you if structured correctly.

I probably won’t structure my next deal this way, I would rather just own the property and have more control of the project.

Large gifts, including real estate, may benefit from structuring around this limitation. 

Quote from @Jack Krusinski: When my rental properties are in a situation like this, I make an effort to create a structured and aggressive payment plan to help tenants catch up.

Why risk your personal credit or you time and energy in needless mistakes when you can build a strong business structure, secure funding, and grow smarter from the start?

They can guide you on tax advantages, asset protection, and multi-state strategies.A HELOC is a smart way to leverage your equity—ensure your financing structure aligns with your long-term goals.Since you plan to add multiple properties annually, consider setting up bookkeeping and financial tracking systems early to streamline your operations.Best of luck with your BRRRR journey—it sounds like you’re off to a strong start!