Open Houses are potential fixer uppers that are available on market to flip. You can quickly find each one by tapping on the house icon on the bottom left of your screen in the city view. Spot them on the city map too - they have glowing sparkles on top of the structure!
There will always be at least 3 Open Houses in each city. Visit Open Houses to collect free CAPITAL from the glowing Open House Trees. Open Houses refresh every 4 hours so be sure to come back often to check out potential properties and get your free CAPITAL!