If my intention is to take out a HELOC on the primary equity for purchasing additional properties (brrrr) would we be better suited changing it to a 15 to increase equity faster for more buying power, or leaving it a 30 and putting that extra premiums directly toward down payments for additional properties?

@Ali Dawood I might pay a slight premium for a property, if I saw value that the market as a whole was not seeing.

SFH premiums tend to sit between 1.5-3k annual.

The seller deserves to be paid a premium, but not a 5 point premium. 

Are homes with ine system selling for a premium over the other?

I have received a flood insurance quote at $150 per month ($1,850 annual premium).

But that's extremely tough in an expensive market.Need to incorporate the added closing costs, the extra $275 a month in interest, the money invested to get to there (renovation), plus the added cost of insurance premium + taxes. 

@Mark De sagun even at $60 per month which is less than I was expecting you'll be essentially doubling your insurance premium forever and even if a quake comes with a 15% deductible you're still out of pocket $50k or more. 

Your income must be able to service a mortgage of $835K plus the insurance (default) premium.

But some leases "auto-renew" per a clause that requires absolutely no action on behalf of the PM, and others go month-to-month, sometimes with a rent premium.