An appeal succeeds on comparison, not on feeling. The argument that wins is that your assessment is out of line with similar properties or that the city's record of your home is factually wrong, for example the wrong square footage, a garage that no longer exists, a basement recorded as developed when it is not, or the wrong lot size. Pull your property report from the city and check the physical details first, because factual errors are the easiest fixes.
Nutana is a difficult neighbourhood to assess in bulk. Century homes, post war infill and newer condominiums sit on the same blocks, and a mass appraisal model applied across that mix will inevitably get some houses wrong in both directions. If your home is genuinely more dated than its neighbours, that is exactly the case worth making.
Be aware of the other side of it. A successful appeal lowers your assessment, and buyers do look at assessed values, so a very low assessment can invite lowball offers on an updated home. Joel Dyck can tell you what your Nutana home would actually sell for before you decide whether the appeal is worth filing, counting the improvements the city never recorded.
Get your hand-reviewed valuation from Joel Dyck.