@Matt Solis would be the perfect person to speak to about this!

I'm still in the process of finding an alternative solution but I thought I'd leave this here as a warning for others looking to make a decision.For reference, I'll just post their email response to me here:As we review your inquiry, we would like to remind you of the following key points from our Terms of Use:In no instance shall ShinePay be liable for any of the following:"Lost revenue from service interruptions.Lost revenue stemming from delays, malfunctions of any product.unauthorized gains access to your account or due to shared passwords or if your password is hacked.Destruction to properly, places, or personal injury resulting from the installation, misinstalling, or misuse of any product.Lost revenue from entering the wrong account number for ACH or other bank transfer or money transfers or due to any delay in receiving funds.Damage to your structure, machines or car resulting from use or installation of our products.Any funds collected that are paid to a person that does not own the property.Any harm from defeating the lock and technology that controls the lock to a device.Failure to properly service any product or machine."

The downside will have more to do with your business personality.

I personally think there is just not enough comps yet to show the true value of ADU's.

The 5-10 it gets heavier and a lot busier, and 10-15-20 it really is untenable to self-manage especially if this is not you main business like a person buying their own rentals and building it like a small business. 

It's one of the hottest markets in the US right now with so much population growth, job growth, and companies moving/developing here (26B Intel headquarters being built here, 68K+ enrollment in Ohio State University, Amazon, FB, Google, Honda, Nationwide, Anduril, etc.).

Here's an article with things to consider when selecting a cost segregation company.

Do you think they're worth the investment, or do most buyers still prefer in-person showings? 

And yes, you are still responsible for wiring earnest money to the closing attorney/title company when you put the property under contract.

She is not in a position to lend a personal loan to me.