Conventional financing for investment property process.

[Jason T.]

Hi all, I have some questions regarding applying for conventional financing for an investment property.

Is it common to be asked for all bank account statements, other investment accounts, and retirement accounts? Are they necessary? What about all the account numbers? 

I understand being ask for primary bank statement and tax returns/w2 and pay stubs, but aren't these pretty much enough?

Also what about being ask for primary residence rental contract? Is this common and can you choose not to provide some of the documents?

Some of the statements being ask for seems too invasive, and doesn't seem to have any bearing to getting the approve, ex. you can't really draw money out of retirement account easily, am I right?