The cost of the render will vary significantly depending on the size of your home, detail of the specific job, your location in the country and of course, the type of render that you use. Cement render is the cheapest material to buy as it's a basic sand and cement mix. However the labour costs are significant as it requires several layers of application followed by coats of paint. You should expect to pay around £40 per square metre for the whole job. Additionally, if you cement render than there will be maintenance costs over time to keep it looking good. Lime rendering will be slightly more expensive for the actual product and the labour time will be slightly more too, so you should expect to pay around £50 per square metre. Coloured render costs more for the actual product and the cost will also vary depending on the type of coloured render. Including materials and labour, you should expect to pay from £40 per square metre for a standard render system but up to £80 per square metre if it's an insulated render system, for example. These coloured systems require little maintenance so you shouldn't expect to pay more in the long run.