The cost of painting a 1 BHK house depends on the size of the house, the type of paint used, and the cost of labour. On average, a 1 BHK house with a wall area of 700 sq feet and a ceiling area of 500 sq feet may require 4 litres of primer and 14 litres of paint. The cost of labour for 2 painters for 2 days may be around 600-800. The total cost, including materials and labour, could be around 6200.