I contacted a title company to officially record the sale, but they are requiring 3 separate closings (and tons of extra fees) because there will be 3 liens/private mortgages recorded (one is the original mortgage that I want to reassign since the interest rate was very low; the second will be held by my son to my daughter for his portion of the equity in the home; and the third is the difference which will be between my daughter and my other LLC). 

Your Title Companies or Realtor should know of them. 

They are hard to find though.Our institutions that are similar to hard money lenders are MICs (Mortgage Investment Companies).Since financing is already hard for homeowners due to the qualfying rules, the MICs also do a lot of private first and second mortgages to homeowners.

Three different management companies have said three different things.Fines are generally either $X or Up To $X for a 1st offense.

Is it better to renovate the basement of your house and turn it into a legal basement apartment or join a JV and use the money to make a down payment on another property to rent out?

Manually = impossibleAI municipal/county/state website scraping = maybecrowdsourced in the aggregate from individual law firms/real estate firms = possiblyA huge company or bored crypto zillionaire would have to do it and it might cost a fortune for the subscription. 

Our current focus is working on 1-4 unit fix and flips, but eventually work towards being able to refinance properties and keep and cash flow them.My question is  tailored on the the way I should structure our relationship for the legal and tax base purposes.Should I secure the deals under my business and pay my partner out of my business operating account?

I have a management company handling my houses and I have not missed a rent payment from section 8 in years.

Paperwork and legal stuff?

All I know is I'm just looking for strategy help/expertise and not for a company to manage my investments/funds who preferably charges a flat fee vs a % of my assets.