This could be grass in the backyard, a few bushes and even a tree or two. Nevertheless, we have to start with the basics. According to our landscaping installation cost estimator, the average price to install landscaping is $3,538.This assumes no foundation has been laid and includes both the front and backyard. If you want to help your landscaper and save some dough, you must keep a few things in mind.his could be grass in the backyard, a few bushes and even a tree or two. Nevertheless, we have to start with the basics. According to our landscaping installation cost estimator, the average price to install landscaping is $3,538. This assumes no foundation has been laid and includes both the front and backyard.