How do I measure a property's resale liquidity before buying?

Before buying, ask whether the unit appeals to a broad enough buyer base or whether it is too niche.
Does its total price keep it within a large and active segment, or push it into a much narrower market? And does the area itself show consistent resale demand? Units with practical sizes, clear pricing logic, and well-understood locations are usually more liquid than complex or overdesigned products with aggressive pricing.
In general, the easier an asset is to understand, the easier it is to resell.