Too good to be true?

[Tony Nuttall]

I’m new to real estate investing. Aside from buying my primary residence I have no experience. 

I came across a deal on LoopNet. It’s for a 4 plex. It’s a value add opportunity. The price is $250k. It needs a good bit of work. The part of this deal im having trouble with is that the people selling this property are offering to owner finance the $250k but will also give me a loan for $100k for the rehab. Sounds too good to be true? Is this common? They showed me comps that say the property will be worth over 500k$ once rehabbed. But you would think if they had the money to loan and they were that confident it would bring that half a million dollar sale price they would just do all that themselves?