The average cost of installing a log burner sits around £1,500 to £2,500 when you include the stove, flue liner, hearth, and labour, though simple jobs using an existing chimney can come in lower and complex retrofits can run higher. Costs are driven mainly by whether a chimney already exists, the length and type of flue liner needed, and any preparatory building work. It’s worth getting a fixed quote rather than relying on averages, since every property and chimney setup is different. A site visit lets an installer give you a realistic figure rather than a rough guide.