1 You will first need to find a big facility to build your indoor soccer field. 2  Building an indoor soccer field is very expensive. 3  The average soccer facility costs between one and five million dollars. 4  To build your indoor soccer field, it would be best to find a warehouse.5  That will save you a little money.nce your road map is in place, you can begin to build an indoor soccer field. 1  You will first need to find a big facility to build your indoor soccer field. 2  Building an indoor soccer field is very expensive. 3  The average soccer facility costs between one and five million dollars.