It is estimated that 60% of foreign residents in Korea live in Yongsan area, south of Seoul, and a large proportion of the rest live in Sungbuk-dong, Pyongchang-dong, Yonhi-dong and Bangbae-dong. In these areas, many western style residences have been built to meet the needs of the growing foreign population. Housing units under construction are largely accommodating the western style floor plan doing away with a typical layout of a Korean residence.   HOUSES     single family houses are usually quite large and have a small to mid-sized garden. Houses vary in size from 50to 100 pyung living space, and from 100 to 250 pyung for the whole land area. They have 2-5 bedrooms and 2-3 baths. In recently built houses, oil heating has been replaced by a city gas system to reduce heating costs.     VILLAS     Villas are similar to western style condominiums usually less than 5 stories high with under 10 units per building. Sizes of villas range from 40 to as large as 100 pyung with 2-5 bedrroms and 2-3 baths. Most villas are furnished with basic appliances such as gas oven, refrigerator, dish washer, washing machine and air conditioning     APARTMENTS     Apartments are largely in western style, high rise building complexes. They are usually smaller than houses and villas, but an apartment complex often includes a supermarket, bakery, laundry room and other facilities