You must have the Business tax license & pay all the fees required.  

Will the property taxes skyrocket?

I use a spreadsheet I developed to determine my entry costs, carrying costs, cash flow, tax write offs, appreciation and exit costs.

Is the option government supplied insurance where taxes supplement the insurance?  

Most on this forum can't even come up with a downpayment, you can't expect them to ride HOI/tax increases, vacanices, etc., with lower leverage and less cash flow on a property.

One thing to think about are the tax implications of being a Canadian paying US taxes.

We owe $154k on the property and the interest rate is 4.25%, the monthly mortgage is $1050 with taxes and insurance.

The biggest differences between residential and commercial:  Scalability, financing are very different, property taxes may be different, Insurance is definitely different. 

If it wasn’t the insurance it would have been the property taxes.

Account Closed I have had tremendous success using direct mail and mailing the owner of record where the tax bills get mailed to.Generally, property management companies don’t pay the real estate taxes so this gets me right to the owner.Targeting wise, I would just do a zip code filtered by unit count using a service like listsource.