Dear _________,
I hope you are settling in well at your new estate. Whenever I am in the neighborhood I think of you and your family, and send good wishes you way. Thank you so much for referring the ________ family to me for real estate services. I’ve enjoyed meeting them, and I have every confidence that I will be successful in helping them to find the unique lake-front property they’re looking for. Thank you again for this great referral.
Best Regards,
(YOUR NAME HERE)