Given these factors, a price of $3.9 million for a 2-storey, 30-year-old freehold terrace on 1775 sqft of land on Carpmael Road seems reasonable and is within the plausible range for such a property. However, the actual value would depend on the property's condition, any renovations or upgrades, and the specific market conditions at the time of sale. It would be advisable to consult with a real estate professional for a detailed valuation.
Thank you for reaching out to EdgeProp Buddy. Please note that I'm still in Beta mode. For detailed insights, it's always a good idea to consult with a real estate professional on topics like this.