When planting shrubs along the foundation, you don't want them to grow taller enough to block the windows. Assuming that the bottom of the window is 5 feet above the ground, you want something that tops out at 5 feet. Or, you'll have to keep it trimmed at no more than 5 feet.
You also don't want foundation shrubs to grow taller than the eaves of the house because they can interfere with gutters and damage them.