Buying resale in Brighton usually means competing with a builder's model home and standard upgrade packages, not just with other resale sellers, and that changes how a resale listing needs to be priced and presented compared with an established neighbourhood.
Mixed density is part of the plan here, with commercial space arriving alongside the housing, so a specific street's proximity to that commercial development, and to finished versus still-under-construction phases, moves the price more than the neighbourhood label does.
An average is a starting point for a conversation, not a number to list a specific house against. Get your hand-reviewed valuation from Joel Dyck.