If the Morgans want to erect a sign that exceeds the height limit set by the ordinance, what must they seek?

To exceed the height limit set by an ordinance, the Morgans would need to seek a variance. A variance is a specific type of permission that allows property owners to deviate from the prescribed zoning regulations due to unique circumstances related to their property. This may include practical challenges that prevent compliance with the height restrictions, such as the topography of the land or the design of the property that would make it unreasonable to adhere strictly to the height limit.

In the context of zoning laws, obtaining a variance often involves a formal application process and possibly a public hearing, allowing for community input. The goal is to balance the rights of the property owner with the overall zoning objectives and community standards.

While other permitting options like a building permit are typically required for construction, they do not authorize deviations from existing regulations. A special exception or conditional use permit allows certain uses of a property that are not generally permitted but still comply with zoning intent; these would not apply in the case where height restrictions are being challenged. Thus, seeking a variance is the appropriate and legal route for the Morgans to pursue their goal of erecting a sign that exceeds established height limits.