(you may want to pick out several based on different lot situations)Based on your plan you should be able to get estimates, You can either go to builders with their plans and ask them their cost to build pre sq.ft. or sq.m, or you can get actual pricing based on your plan. 

Buyers if you want an extra advantage over other buyers call your favorite Mortgage Banker and ask for a "Fully Underwritten" approval not just a Pre-approval.

@Tanner Sortillo- thanks - I would have the new investor get a solid idea of financing options and for them to get formally pre-approved for a hypothetical scenario. 

I would not advise working with any PM unless they are able to provide all of the necessary reports for the property - Cash Flow, Income Statement, rent rolls, T12, etc.

But I can consider rolling some of my retirement accounts into a self-directed IRA and investing in syndications that way if I wanted, and still enjoy all the tax-free growth in my retirement account.• Bonus depreciation is winding down, as many of us know.

Caught the flag on the first sentence "given the loan terms verbally" - Pretty much all the "reputable" DSCR Lenders will give out a detailed term sheet / pre-approval letter / LOI (many different names but same thing) outlining terms and approvals early on in the process - the good news is that if you haven't closed yet you can still switch lenders and see if you can secure your original terms - also good news is that the appraisal, while likely ordered by the lender or broker is in your name and your property, so you can likely transfer it to the new lender

And we found a great pre-finished lumber supplier for the siding and the tongue and groove that is saving us 10 to 15k a cabin depending on the size (and producing far better quality results in the finishes).It doesn't sound like much when you're looking at 300k to 500k builds.  

In your situation, when the time comes you think you are ready to purchase, go to your local bank and tell them you want to get pre-qualified.

Buy BP's books on creative financing, zero down, subject to,  pre-forclosure, even short sales.   

In some markets you could do 250k pre tax off 1 flip, others will require a higher volume of flips.