They're all private/HM lenders, but they do exist. 

or my existing lenders are tapped out? 

We've been honing in on a pretty good development/investment formula that is working for us where we buy an existing single or multi-family house that can be improved or easily split into smaller units, and then we also add small new construction units to the property (townhomes or duplexes or cottages) and, generally, we rent them all out (though we have sold a couple of single family rehabs and we may sell the units in our next big project...

Whether buying land to develop, buying existing Storage locations, reduce risk of over inventory of storage units in one market, TIME waiting for either land or a location to become available for sale, while we are trying to grow our business.Start small and MAKE YOUR BIG MISTAKES EARLY. 

Existing liens/mortgages (Run a title search)2.

Re knowing the market, which is one of the reasons (I've read up on that) you'd want a RE agent, esp if not from the area, which I am not, my agent is from about 2 hours away and as the listing is an existing Airbnb for 3 years, I see the prior numbers, and based on that, reviews, and market data, have made an estimate of what I believe it will make under my ownership.

Yes, inventory is ultra-low and discounts are almost non-existent.

We do qualify to refi without adding but we are then paying the mortgage out of pocket.Our thoughts are to use the existing infrastructure to build out the 5 bedroom house, then house hack.

And people refuted me when I said racism and discrimination in housing doesn't exist.

Should we just call up every builder and ask them to quote on a job that does not exist yet?