A retaining wall can sometimes be a necessary landscape feature in a yard with a severe slope. This can help level a yard to create a nice, even, usable surface.
For a retaining wall to stand the test of time, however, proper drainage behind the structure is essential. Backfill that’s too porous and lack of a drainage outlet can cause curves, bulges, overturning and, ultimately, wall failure when the amount of water being collected is too much for the wall alone to handle. Ensuring proper drainage during construction can save thousands of dollars further down the road.