The third column of the PRWS is titled "Questions related to a disposition to your spouse/partner". Since the sale is to a third party, should both husband & wife leave the questions in column 3 blank, including question 1 which asks: "did your spouse/partner also dispose of this property (if applicable)?".
For the "Lot Number" in column 1 "Address", is this just if the property is on a specific lot number, or are the legal description and parcel ID (e.g. PID, district etc) required? (Or is a full address - house number, street name, city, postal code and province --- sufficient?)
However, if you are preparing your return together with your spouse, your entries on the Principal Worksheet will only copy over if you indicate "Yes" to "Did your spouse/partner also dispose of this property?"
Just a final note, once you filled out the worksheet, you will need to go into the T2091 to complete that form. The Review will also prompt you to fill out any missing information.
See attached picture regarding how to answer the 3rd column. Essentially, Yes, No, No and blank.
You are correct regarding the Lot Number, it is to accommodate rural community addresses. The full address is sufficient.