Check local building codes, permits, and property lines
Choose the wall type and materials
Measure and mark the wall location
Clear and level the site
Excavate and prepare the foundation area
Install footings or a base as required
Build the frame or lay the first course
Keep the wall plumb, level, and square
Add reinforcement if needed
Continue building to the desired height
Install openings, supports, or anchors as required
Finish the top edge and surfaces
Seal, paint, or weatherproof the wall
Inspect the wall for stability and compliance