Can I Refinance a house with Steep Stairs?

So I'm looking at buying a rental house in cash that has 2 apparent issues; asbestos siding and steep stairs. I plan on residing the house in the Spring/Summer of next year, then go put financing on it to BRRRR my money back out. My biggest concern is that when I go to refinance it, the appraiser will walk through the house and notice the really steep stairs. They're not to code but I would think that they're grandfathered in. Does anyone know if this will prevent me from getting financing? I've seen houses with steep stairs like this before, just never thought about the financing part of it.