Rehab and New Construction Help on Apartments

I have two different scenarios I need where I need assistance.

  1. Apartments need rehab. Owner financing deal. How or where can I get money to finance the rehab work?

2.Apartments are half done. Owner financing. How do I obtain financing to finish the other apartments?

Thanks

How much paper is the seller holding? How are these deals structured? Then we can offer some advice.

Thanks jbaldwin for responding.

On first property, the seller is holding 1 million. Our plan is to refi and hold once we rehab and have 80% occupancy.

On second property, the seller is holding 500K. Plan is to finish construction, refi and hold.