With a focus on facilities designed to handle small and medium volumes of NORM waste, this TECDOC provides guidance on cost estimation for its disposal. It establishes a clear definition of NORM waste, explores the typical sources of small to medium quantities and outlines the range of disposal options according to the associated waste hazards. The report introduces a lifecycle-based cost estimation model, which serves as a foundational framework for developing cost estimates. It also identifies key components and variables within disposal plans that may influence cost variability. In addition, this publication presents high-level insights into various cost-estimation methodologies. Rather than offering a catalogue of specific costs, this TECDOC aims to equip Member States with a structured approach for collecting and applying their own cost data in the planning and development of NORM waste disposal facilities, acknowledging that cost elements are highly context-dependent and may vary across Member States.