The idea of going with a professional interior designer scares a lot of people because of the cost that is typically involved. But if you shop around you may in fact find that it is not as expensive as one may first think.You have to consider all of the factors involved when trying to decide whether or not it is in your best interest to do the modern living room interior design on your own. If you are not all that experienced in designing rooms, the mistakes you make could very well end up costing you more then it would have just to hire an interior designer.