"to" is correct in your example.
"at" might be used when referring to your stay or activities at the place you're visiting ("my visit at ...", "a visit at ..."), but I don't it can work in your sentence.
Also, your sentence sounds a little odd to me. I can only imagine it being said by some city worker who needs to come to the newly built or purchased home to check its compliance with city ordinances. It would sound funny (and possibly rude) to say it to a friend or colleague who just moved into a new house. In that situation, I would say something casual and simple like "Could you show me your new home sometime?". Just my thought.