Make navmeshagents step height more than its agent height

My character is 2 units tall, I want him to be able to walk up steps that are 5 units tall, I can't do this because you can't set the step height higher than the agents height, I can't increase the agents height because then he will be too big to enter buildings.

Any ideas that will allow me to create an agent with a step-height greater than their agent's height?