Canadian selling us property

[Dan Veld]

Hi I’m selling a property in the us, the capital gains will be about 40k. Does anyone know if there’s a way to avoid the 15% withholding tax? I’m still waiting for my return from a property I sold last year from the irs.  My accountant mentioned possibly form 8288.   But closing is dec 4th.  This might be to right to be sending in forms.  Could take months to hear back. 

Thanks