This one is fairly complex and most lenders I've spoken with won't touch it. It's probably going to need to be someone lending on an in house portfolio.
The issues is that it's 35 acres, zoned Ag and there is a 2nd modular house on the property. Sounds like it would be fine if it were zoned residential or if the modular was gone but neither of those are going to happen.
No issues with value, credit or down payment, it's strictly that Ag status and the modular guest house (the owners lived in it while they built the main house). It's in Castle Rock and it will be a jumbo.
PM me if you do mortgages and I can provide additional details. I've got a backup plan but I want to find out what else is out there.