@Marshall Rosario To be 100% honest with you I haven't really looked at manufactured homes even on their own land.

I'd encourage you to either look through the website to see what the instructions are there or contact their asset manager who might be able to help you out depending on the size of the institution, it is either going to be easy or hard to find.

Some of the companies you mentioned may be manufacturing excuses because it's a market where they have too much exposure already.  

For purposes of determining the VA guaranty, lenders are instructed to reference only the One-Unit Limit column in the FHFA Table “Fannie Mae and Freddie Mac Maximum Loan Limits for Mortgages Acquired in Calendar Year 2017 and Originated after 10/1/2011 or before 7/1/2007”."

They can have a verbal lease or scribble on a napkinRealtors(not agents) are required to use the TAR lease unless instructed otherwise by their client.

And betting on appreciation is risky because CA market is all time high.So I am checking out investment in Manufactured Home (MH) in SoCal areas like Cerritos, Anaheim, Irvine.The rent from my research shows that normal SFR in those areas for 3bds/2brs is approximate $2500k.The land lease for a MH with the same criteria is around $1200k - $1500k, and the house is usually 40k - 100k.If conservatively saying, if renting out a MH for $2000k (often it is cheaper than normal house) thenRent - (Mortgage + Maintenance)  - Land lease ≈ $300kSo would $300k cash flow is a right calculation, am I missing something, is there anything I need to watch out for when using MH as rentals?

So, I'd make friends with a title/escrow company officer ... email them the terms of the agreement and have them draw up escrow instructions that you both sign to open escrow.

However is a manufactured home which usually need to be a primary residence to get a loan.

@Jay Hinrichs   More and more people I know are actually picking up the wire instructions in person when ever possible. 

They would keep the money in escrow until purchase, and ensure the closing instructions (to draw up/record the note and mortgage).