Abstract: The conservation and sustainable management of forests are vital for climate change mitigation, biodiversity preservation and ensuring the socio-economic well-being of communities. This is specifically important to Kenya where the general projection shows that the demand for timber and its products is set to increase steadily by the year 2032 while the forest cover is decreasing. This thesis focuses on developing a yield estimation modelling tool for Cupressus Lusitanica and Pinus Patula in the Uasin-Gishu region of Kenya.This will enable forest managers and stakeholders to make informed decisions regarding sustainable forest management practices