How much of a down payment can be a gift for a conventional loan home purchase?
Your entire down payment can now be gifted

Procedure for Getting Financing for a First Time Home Buyer
Hi GaryI am a banker in Atlanta that offers 1st time homebuyers a 3% down financing program that has no mortgage insurance. I can qualify you in a few minutes over the phone. Our current turn times to close average 15-20 days. Give me a call or send me an email and I will send you information. Chris...

will a conventional loan require documents on past home rent paid cancelled checks
If you are renting from a management company than you simply need a verification of rent. If you are renting from an individual than you may be required to show timely rent payments by using cancelled checks. This is not always the case and there are exceptions to this rule should you not be able to provide...