This chapter provides a practical roadmap for executing architectural experiments. It covers planning, site preparation, participant recruitment, randomization, and data collection. Attention is given to minimizing biases, ensuring consistency, and managing logistical challenges unique to build environments. The chapter emphasizes clear documentation and adherence to protocols as key to reproducibility. Through step-by-step guidance, it equips researchers to move confidently from concept to operational experiment, ensuring smooth execution and reliable results.