The subject property will need to meet a debt service coverage ratio minimum, typically between 1.20x-1.40x - essentially meaning the property needs to cash flow between $1.20-1.40 (depending on which bank) for every dollar of debt the property carriers.

If you're planning to pull cash out of your existing property I would want to see a debt service coverage ratio of 1.30x.

We are planning on using air bnb which also provides $1 million liability coverage.

The property insurance make up the majority of dwelling insurance premium so I assume that is the coverage you are most concerned with.

I want to add Umbrella coverage of at least 1m however my insurance company will not do it unless I move my car insurance to them which is A LOT!!!!

It's roughly about $500-$800 per year depending on how much coverage you get.

The primary factors that make up your premium are 1) reconstruction costs 2) fire rating 3) coverage levels on liability, separate structures and various endorsements and somewhere in there ( a black box so to speak) is your credit rating.

If so, add the contents coverage.

I received one quote of $660 for 4 months ($500 deductible and no vandalism window coverage) but that seems very high. 

Hi Ben,Commercial lenders look for deals to meet a minimum debt service coverage ratio, typically between 1.20x-1.25x.