When is my first mortgage payment due?

I plan putting an offer in for a place very soon but I'm stuck ina lease for another 4.5 months. I know the typical timeframe to buy a house is around 4-6 weeks. Is there anyway of dragging out this process while still putting an offer in now ( say around 3 months ). Also, when is the first mortgage payment... show more I plan putting an offer in for a place very soon but I'm stuck ina lease for another 4.5 months. I know the typical timeframe to buy a house is around 4-6 weeks. Is there anyway of dragging out this process while still putting an offer in now ( say around 3 months ). Also, when is the first mortgage payment due ( from day you sign mortgage papers or some other time )?
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