Land surveying is considered one of the main activities in executing construction projects. Therefore, it is exposed to various risks, while the most important of which are environmental risks. For that, this study addresses and identifies the expected environmental risk factors associated with Land Surveying Execution (LSE) in construction projects. Twenty three environmental risk factors influencing LSE are identified under three main categories including atmospheric and climatic conditions category, topographical features and physical site barriers category, and logistical, operational, regulatory, and data integrity category. Identification and qualification analyses are conducted to define the priorities of risk factors affecting the cost of LSE which represents the main objective of such projects. Further, the risk breakdown structure is developed. Data concerning the characteristics of the identified risks and the probability of occurrence and impact of risk factors on LSE cost is collected and analyzed. The results showed that a risk factor related to “High traffic or dense urban areas causing operational delays” is the most likely to be occurred in these projects. Further, a risk factor which is related to “Marker movement due to ground subsidence or landslide risk”, is the most factor with impact on LSE cost. The combined effect of the probability and impact is calculated in the form of severity for all risk factors, and the highest severity value is for “High traffic or dense urban areas causing operational delays”. The third category is found to be the riskiest one because it has the largest number of crucial risk factors and has the uppermost cumulative and average cost severity values.