Quote from @David Pennington: I followed @Jay Hinrichs advice and checked with the county and they have no zoning regulations about drilling.

Their support is non-existent.

Thanks. because existing is super messy and lower returns for general contractors and HIC, I'd recommend looking at new construction too. start to finish 120 days right now on 1-3 family is what our market is going for high volume spec homes that have been built before. 

Here are some key criteria for evaluating a Cost Segregation provider:- Seek out a Certified Cost Segregation Professional- Consider their experience with tangible property regulations.

Could I fund the purchase using a bridge loan with the assumption to sell my existing home ($1.5M)? 

Or maybe once you know what's allowed reach out to existing businesses to see if they want to expand. 

If you're unsure when you'll be moving, a ski-lease or mid-term lease might be an option.Truckee (City) has regulations on short-term rentals and a waiting list for permits.

Chasing keys is a pain and we're trying to find an all in one solution-if it exists. 

Here is the rule from the IRS regarding length of stay for short term rentals:As defined by Treasury Regulation Sec. 1.469-1T(e)(3)(ii)(A)The average period of customer use is 7 days or lessThe average period of customer use is 30 days or less.

The only way to know it is to have someone experienced review it.The article must have been written long ago, before 2018, when this 2-yr rule existed.