How do you determine how much to rent my house for?  
2 factors are considered.
1. How much is the last houses rented in the same area.
2. Number of houses for rent and the price they are asking for.

How long will it take to rent it?
It depends on several factors including the market condition, geographic location, price range and the condition of the house.

How much will it cost to rent my house?
It is absolutely free unless you accept a qualified application. Once a renter is secured, commission is 6% of the monthly rent times the number of months dictated in the lease term.