I contacted ALE solutions on Friday through their housing request form and just resubmitted with a longer term minimum based on what you stated here.

Just today I got a booking request at 3:30am here in WA state.

What zoning code could I request a zoning variance or rezoning that would allow us to have the 2 livable units on parcel, one primary residence and one additional living unit (known currently as ADU)?

At the completion of your due diligence, you have 3 choices; accept the property as-is and move to step 4, reject the property and walk away, or ask the Seller to correct any items that you request. 

@Chris Magistrado,Legitimate buyers might request an inspection for due diligence.

You can simply request a separate check for the $100 increase to bring the total deposit in line with the new rent amount.

Quote from @Aaron Kuehmichel: When the tenant requests an improvement, it's OK to say no.

We completed our due diligence within 10days and once the report came back, we immediately requested our deposit back. 

Also requesting a copy if possible.

However, when I requested our EIN the letter stated, "Based on the information received from you or your representative, you must file the following forms by the dates shown.