Hi 我觉得应该是 Welcome to my home often/ frequently. 另外,“欢迎常来我家”其实还可以这样表达 :) You may always be sure of a welcome at my house. or You are always welcome at my house.

I think Annabel is right, the closest phrase in English would probably be, "You are always welcome in my house."

I agree with the answer provided by Victoria. You can say," I'm happy to have you in my house." or "It's my pleasure to have you as my home guest."