Overstepping my bounds?

[Noah Dunlap]

There's a specific off-market duplex in my area that I'd like to buy. I've been hitting the owners with direct mail for a few months now. I was considering sending them a few offers without even seeing the inside of the property, but I'd like to find out some more information before doing so. Would I be overstepping my bounds to ask the current tenants about the house and owner? As an investor, would it irritate you if someone was interviewing your tenants about your property?