We use GIS data with arial imagery to create our site plans. Geographic Information System (GIS) accuracy can vary depending on a variety of factors, including but not limited to the quality of the input data, the accuracy of the spatial reference system used, and the precision of the analysis methods. Therefore, the results obtained from GIS should be used with caution and should not be solely relied upon for critical decision making without verifying their accuracy through other means.Clients should always verify the dimensions. Any discrepancies should be marked on the plan and sent back to your designer and we will update the plan free of charge. Because we are reliant on third party data and we do not visit the property we can not make any representations regarding accuracy.