We received an application for a pre-approval to purchase a house. Customer had the address of property he was looking at and just wanted a pre-approval so he could put in an offer. No purchase agreement had been signed.
Since we didn't have a signed purchase agreement, I treated it more like a pre-qual and did not do early disclosures. Should we have since he had the address???

If you have an address, it's not a preapproval. If you have the other items needed to call it an application [see §3500.2(b)], then you have an application for RESPA and TIL.