Do you need to tell a realtor when you’re looking for a place to rent a first time buyer for a home that you are facing an eviction?

Once an eviction is filed, if thats what you mean by facing an eviction, you already have an eviction on your record. So the answer is "of course" and you already know why. Because its going to come up with most anyone that does a BGC or asks on an application so you might as well get it out in the open. If you have a prior eviction, you are most likely NOT going to be eligible to rent at most decent places or those with property management running them. If you fail to tell the RA that, they will likely be blindsided by it, bent you wasted thier time, and probably drop you as a client if not charge you for the effort. They will need to focus on less diligent or concerned property owners and if you are looking for inexpensive also, likely looking for more remote locations with more forgiving landlords. The more competetion for the unit, the further down you will be on the approval list.