Be aware of the possibilities of lifestyle conflicts, the physical demands of 24-hour oversight, and changes in marital and familial relationships. Be sure to work out the finances and living arrangements before the move, especially if it's long distance. On the plus side, multi-generation households offer a special quality of life, especially if there are grandchildren, and it is much easier to monitor diet and medications with your elder in sight. Sometimes children move into their parent's home, perhaps after modifications. Be sure you consider all the financial and lifestyle ramifications, as well as issues of control and interdependence.
Entrance is usually separate from the main house.
Sharing a home is also a common solution. In this situation, your elder can be matched with another applicant who may split housing and utility costs in exchange for services. There are also social advantages, especially if your elder lives alone. An extra bedroom can be rented or your elder can join a group residence. Word of mouth, newspaper ads, and community bulletin boards can also be helpful.