Investment opportunity in a PUD

I have a client with 200 acres in TX that I got approved for 40M including horizontal and vertical financing on 180 homes but the county wants them to pay for 180 water meters up front and the lender doesn't want to include that on the term sheet. Does anyone have any advice on raising 700K in capital for water meters? We're offering 50K at closing, 15% ROI and 1% equity in the development.