Co-Sign and then assume? Any insight welcome!

[Geni P.]

I would like to have my sister and brother-in-law purchase a house as their primary residence then appropriate the property for myself in the future. I will be funding the 10% downpayment and any repairs needed since it will more than likely be a damaged forclosure. When the purchase is all said and done how would I go about getting the house placed in my name a year or so down the line? Is it a possibility if I co-sign for my sister and husband to acquire the loan on their line of credit?