Keep meticulous records and understand what's deductible and what's not.

Personally, I would just let him know that this particular brand does not come with finger guards like the previous one did but you understand his concerns and it if I’m not mistaken, baby proofing is not a part of a landlord’s duty

Also, make sure the property manager is a solid one.

Whether you're a seasoned investor, a curious learner, or a multi-family development expert, I'm excited to engage in thoughtful discussions and expand my understanding of this dynamic field.I look forward to contributing to and growing with this community.

We will have an adu so if you know of any solid contractors, feel free to post as a reply or message me. 

A good mentor  with solid experience would be welcomed.

In particular, I understand that before partitioning I will need to have my mortgage lender release the lot from the lien.

I generally recommend a balanced approach: prioritize a solid foundation by paying down some principal while strategically acquiring new properties using savings and cash flow.

HE DOES NOT UNDERSTAND ANYTHING AND SAYING ITS ILLEGAL.

If you can get it even Mortgage+HOA/Rent that will be impressive and if your credit checks out you will definitely have solid cash out options.