What are the options for seller financing?

[Salomon W.]

Hello everyone,

I currently have a great deal on the table, the seller is asking $300,000, the value is about $450,000 or more.

The house needs roughly $50,000 in external rehab. 

I am currently eligible for a 75% mortgage. It would be hard for me to get the 25% down payment + the rehab cost. Is it normal to ask the seller to ask for a 25% seller financing as a second lien on the property?

Does it work this way? Do you have any suggestions on how I should propose it to the seller? Do you know if the mortgage company will have an issue with it that the buyer is not putting down any money? How should I go about it?

Any advise from past experience?

Thanks in advance.

Salomon