But of course that depends on the specific location. 

You have banks ( local,regional,national), credit unions, life insurance companies, & CMBS lenders.Who does what loan depends on location, asset type, and size of the loan.

I'm interested in locating a bank to provide a HELOC on an investment property with ~130-140k of equity. 

In the lease option business, I would be licensed, whether Property is located in WV or FLA.Then I would look for home seller problems, such as expireds, cancelleds, long days on the market, eviction court with DIY Prop Mgrs, etc.Also wholesalers that have leads with little equity.If you are in the "solving problems for sellers" pretty houses with little equity is a good niche. 

I'm interested in potential partnership but I am located in NY do you just deal in Canadian R.E

We currently live in Oregon, we have 2 single family rental properties located in Arkansas, we're looking to purchase our 3rd property in Indiana.

Currently, I am associated with Stewardship Properties, located in Eugene, Oregon, and have the resources able to take on anything from minor repairs to serious problems.Contact me and we can discuss our criteria and see if we can come together and help each other succeed.

So if the purchase price is 950K, then that works out to roughly 17K per unit; and if the purchase price is 850K, then that works out to just over 15K per unit.Per unit prices like that usually indicate that the location might not be so hot and the typical rent will be low.

@Harry Gamble The cost of insurance will vary greatly based on the individual property types, specifics, and locations.

The duplexes available in the Boston market are typically in rougher areas that come with another set of issues.If it was your first rental property, which of the three would you go with (all other things being equal - assuming they were in the same quality location).