It is likely there was but one potter near the place, or at least that there was one more noted and eminent than the rest, to whose house the Lord here sendeth the prophet, intending there further to tell him his mind what he would have him publish as his mind and will to this people.
Related Commentaries of Jeremiah 18:2
Jeremiah 18:2
2 Arise, and go down to the potter's house, and there I will cause thee to hear my words.