The price of a paint job is greatly affected by the project. Factors are the size of your flat, paint brand types, your wall quality and the level of painting difficulties and other environmental factors. 1,000 sq ft of direct painting, the prices range from $ 3,000 to $ 15,000; 1,000 sq ft for wall putty application will cost over $ 6,000 to $ 25,000; 1,000 sq ft, for prepping the surface and painting will cost between $ 15,000 and $ 50,000. The larger the construction area, the higher the cost. Costs generally include material costs and staff costs. If you want any special effects on the wall like gradual change of colour or painting a picture, this will higher the cost too. Before you hire a painter, you should invite the painters to visit your place because the painters will know which actions they need to implement when doing the oil painting. If your flat is newly constructed, the paint task will just be direct oil painting. Painters will use sandpaper gently polished ceilings and walls, and then clean the house’s exterior of all dirt, grime, mildew, and chalky residue and directly apply with latex paint. If you have a slight damage on the wall of the house, the master will need to do wall putty application. If the surface of your wall shows serious sign of cracking, blistering, and peeling, the painters will first need to remove the damaged surface and then fill the holes with exterior-grade putty. Once the putty is fully cured, sand it flush and apply direct painting.