how are values divided in land subdivisions?

[Sean H.]

I bought a house for 175k. Im keeping the house intact, and creating two new lots which i will build on this year. When it comes with paying income tax, will the two new lots be considered 0 dollars, or can i assign them some values to the land to make the gains on the house greater? I probably sell the house for 180-200. But the new construction houses will be sold for 375-400, so I would like to assign them something higher than zero if i can.