A properly applied wood floor stain can last for several years, especially when paired with a high-quality protective finish. Its longevity depends on factors like the quality of the stain, the type of wood, and the amount of foot traffic the floor receives. Regular cleaning, using floor protectors, and avoiding harsh chemicals will help preserve the colour and condition of the stained floor. Over time, even the best stains may fade slightly, but with good maintenance, re-staining may not be needed for 5–10 years or more.