Anyone with a strong back can stack up a bunch of blocks and build a pretty retaining wall. But it takes skill and planning ...
In most jurisdictions, retaining walls under 3 or 4 feet do not need to undergo a plan check or permitting. However, since the provisions differ between locations, it's best to find out first ...
Product types include poured concrete walls, gravity walls, cantilever retaining walls, gravity poured walls, gabions, crib retaining walls, welded wire walls, plantable walls, and pre-cast walls.