The value of houses increase by an estimated five to seven percent if one of the following outdoor features are in place. Their presence also adds to the property’s ‘curb appeal’, making it easier to sell. *Fire pits. In cities where the cold weather prevails for almost half the year, an outdoor fire pit is the ideal place to relax and entertain. Fire pits do not require a lot of space and their maintenance costs are minimal. Setting up cost: Rs 20,000 to 50,000.<\/p>