A built-in coffee maker does not necessarily need to be professionally installed. However, since it involves both plumbing and fitting into cabinets, having a professional handle the job is usually preferable to doing it yourself.
Built-in coffee makers come in a wide variety of price points, but quality models will cost several thousand dollars.
Built-in coffee machines are quality kitchen appliances and a 10-year lifespan is not unusual. As with any coffee maker, regular maintenance is a key to a long life.
Miele, Fisher Paykel and Bosch make popular built-in coffee makers. Seeing the selection at Coast Appliances in person is the best way to find the right one for you.