Any Creative Strategies

Hello all. . .I am a new poster here.

I recently was approved for a 500K construction loan.

There is a 7 acre waterfront lot of land in an exclusive gated community (where average price of home is 2 million) for sale for 900K.

Obviously, I can't afford that. . . but constructing a house on that lot would raise the value of both the land and the house. . .

Just wondering if there were any creative strategies whereby I could construct on that lot. . .

Has anyone had an experience like that before??