There are times we bump into a friend we have not seen for a long time either on social network sites or on the streets and we do some catch-up on old times, and at the end of the conversation we decided to exchange contact details so as to keep in touch.
In the scenario outlined above, you may want to start with only your phone number, so, you may want to politely tell them you should both communicate via phone first. This is to allow you skip giving out your address without seeking the consent of your spouse (if you are married) or your parents (if you are living with parents or aunts) to release your home address.
Courtesy demands that you seek the consent or permission of whomever you are living with before you give away their home address. This is of outmost importance considering the number of years you have lost touch; you never know their current background after all.
Bottom-line:Never give out personal contact information of friends or loved ones without their consent or permission. Correct?