Contractor / investor financing

[Craig Jones]

General contractor in business for 40+ years with an opportunity to acquire someone else's unfinished rehab for ~$2M with an ARV of $4M - $6M depending on whether we finish the existing project or tear down and start over with a better design. Projects in this price range are our bread and butter -- custom builds, whole house remodels and additions. Typically architect-designed, but also some design-build.

To date though, always owner financed.  We've never been investors or done a spec house.  

What are the best sources of financing for this scenario?  We'll explore our existing banking relationships, but I suspect there might be better options.  Too big for typical fix-n-flip type financing?

100-person employee-owned company with a strong balance sheet.  No one owns more than 10%.