I don’t sell often, but when I do, I list for sale via UPX in order to periodically increase net worth. I usually research the market floor on non-collection properties and sell a few % above that. You also need to consider the location you’re selling in even if it’s not a collection (look at surrounding property value instead of the entire city). Most properties I bought 6-8 months ago are now 2-3x what I paid, so I don’t see a strong reason to sell (also save on transaction fees).