Ask both agents for their comparable set in writing: addresses, sold prices, sold dates and the specific adjustments made for lot, size and condition differences. The Saskatchewan REALTORS Association's MLS data is the shared source both agents should be pulling from, so a wide gap with no comparables attached is a warning sign rather than a difference of expert opinion.
Renovations done without a permit are the single most common reason two honest agents land far apart, since one may have walked the house and seen the improvements while the other priced from public records and a drive-by, and public records cannot see work that was never permitted in the first place.
Joel Dyck's hand-reviewed valuation walks the property and shows the comparables and adjustments in writing, so a seller can see exactly why the number is the number. Get your hand-reviewed valuation from Joel Dyck.