Estimating After Repair Value of Multi-family properties

[Andrew Zbrzezny]

Does anyone have any tips on estimating after repair value (ARV) of a multi-family property. I am in the process of closing on a two unit property outside of Buffalo, NY and am deciding whether to use a mortgage or pay cash and BRRRR it. I have looked on Zillow and Realtor.com for comparable properties and what they have sold/ are selling for in the area in terms of square footage and bedrooms. Any other advice would be appreciated!