Leasehold devalues a property versus an equivalent freehold by different amounts depending on the specific terms of the lease and market conditions. A shorter remaining lease can lead to a 10-20% reduction in value. This is because when the lease runs out the property reverts to the freeholder. You can avoid this by extending the lease, but the premium for this gets higher the less time is left on the clock. High ground rent and demanding lease terms can negatively impact a property's value. In some cases, leasehold houses might be sold at a lower price compared to similar freehold properties in the same area, based on the ongoing expense of high-ground rent. On the other hand, with a very long lease, such as a 999-year lease, the impact on property value is typically minimal compared to freehold, and it might not significantly affect the property's desirability. Potential buyers and sellers need to consider these carefully and seek professional advice from a qualified leasehold solicitor with experience.