An R-21 license could be used for which of the following?

• A. Building a decorative trellis
• B. Building a perimeter fence
• C. Building a Gazebo
• D. Building a patio cover

Answer: (A)

Licensing categories in landscape contracting define what you can legally do under a given license. The R-21 license covers landscape installation that doesn’t involve building structural features. A decorative trellis is a lightweight, ornamental landscape element that doesn’t create a substantial structure, so it fits within the R-21 scope. In contrast, a perimeter fence is a more substantial structural feature and is often regulated under fencing or broader construction licenses. A gazebo and a patio cover are clearly built structures with roofs and framing, typically requiring a different license or building permits. So, the decorative trellis best matches what an R-21 license permits.