On a park, you can calculate the NOI by multiplying the number of spaces occupied by the lot rent, and then multiply by 12 months, subtract the expenses (can range from 35-50%, that % depending on the variables above).

would it take the rent revenue and multiply it by 10 or would it simply take comps?

As such, multiplying your NOI x 10 will get you a ballpark number.

I'd do two bedroom and multiply by two.

We all have challenges but a deal with friends multiplies those exponentially.

Curious to hear best advice from investors who’ve managed to multiply their wealth using passive real estate strategies, perhaps from a similar scenario?

I then determined the average price per square foot based on the 10 and multiplied that by my house’s square footage.

If you are willing to occupy your investments you have just multiplied your earnings.   

The start of this process is an iterative cart-before-the-horse, chicken-and-egg, “insert idiom”, and keeping potential investors in the loop on your process will give you a reason to stay in touch while proving your abilities and defining your value-add with investor input.2)  Partnering with experienced Bigger Pockets members is an exponential multiplier when you need to build your credentials, augment your skillset, and validate your platform with investors.3)  Your investors don’t always need to provide 100% of the purchase plus renovation cash.

Compare that to the LPMI at a higher interest rate or the standard MI on a loan.If you keep the down at 5% and are doing a conventional loan, you can also look at a split MI. so part of the overall MI premium paid as closing costs and part as a multiplier of your monthly payment.