Washers and dryers are not required in apartments, although some apartment complexes may include in-unit washers and dryers. Many apartments also have shared laundry facilities, which typically cost money to use.
Apartments are typically required to have essential items. Electrical and water connections are generally required, as are bathrooms. Washing and drying machines aren't generally included. Some complexes that don't include washers and dryers may have appropriate connections available in a laundry room, but smaller apartments typically don't. However, there are washers and dryers designed for especially small apartments. Although they can only hold a small amount of clothing, these washers and dryers offer convenience for tenants who don't want to deal with coin-operated machines.