Recommended documents before making an offer.

[Chas Lumley]

Hello all,

I'm looking to make my first offer on a duplex and I'm needing help deciding what to request now vs what can wait until the due diligence period. 

Is it reasonable/expected to ask the seller to provide all their income/expense reports. Additionally, is it reasonable to request the current leases and what I believe is called the rent rider form (please correct me if that's not a real thing) prior to making an offer?

Half of me wants to gather as much information as I can before making an offer, but the other half of me wants to just make the offer so the seller knows I'm serious, then check all the leases and expenses during the due diligence phase. 

Any advice on the normal process you use prior to making an offer would be greatly appreciated. 

Thanks!