I partly disagree that a quick sale necessarily points to competition. It can also reflect a motivated seller who accepted a clean, financed offer below asking rather than waiting. The useful comparison would separate cash and financed buyers, note property condition, and show whether the seller...
Was the completed comparable an ordinary open-market transaction, and is its completion date reasonably current? Those details could matter more than a finely tuned floor-area adjustment. I’d also examine whether both levels have useful ceiling height and natural light. Gross area is less...