I use National Real Estate Insurance Group (aka Affinity) - they've been very easy to work with. 

Try Credit Unions, local and national banks.  

Is the developer small and local, or big and national?

I know I had better luck (I buy out of state) there that going through the national providers that you hear advertised. 

If you sold the land and bought something already built with national tenants and long term leases the cash flow stream tends to be more stable throughout a full cycle.  

I thought I saw a post about a national bank that does a while ago but can’t find it. 

most likely this will have to go through the process and end up with OREO broker who then lists it for sale.. trying to find a national lender and buying one house from them is next to impossible.. they simply will not deal with one asset.

I've recently acquired a land contract for 10 residential lots in 29 Palms that I'm interested in finding out more about development costs and ideas for single family and/or vacation rentals due to large military base and Joshua Tree National Park.

David Kiper where did you get those quotes from, national lenders?

They are a national association that has both regional and national conferences.