That's a good start. I would start with what the city rates are and then dissect each house along the street by size, # of rooms, north facing, age, etc. Then compare it to the house you are looking at. Remember that it's quite common for real estate agents to mark up the house far more than what it's really worth. $100K more is quite common for a $600K house (20% gross amount of city rate valuation).I did look up the CV value on the city council's website and it is ~100k less than asking price.
Another advice is to never fall in love in any particular house because you could end up paying too much.