Hello. I am trying to calculate capital gains tax for my home that I sold. I bought the lot 10 years ago, then built a home 5 years ago. Do I get to include the lot?

If I bought the lot 10 years ago, paid cash for it, then built the home with a construction loan 5 years ago, then sold it in 2021, do I get to include the cost of the lot in my cost basis?