Sefton Engineering Consultants LLC You are here Home > Community & Professional Services > Engineering / Surveyors / Research > Sefton Engineering Consultants LLC Specializing in Civil Engineering Services, Land Surveying and Planning. Tweet Our address Address: 20 Stutz Bearcat Dr Ste 8 Sedona, AZ 86336 GPS: 34.8626264, -111.80410139999998 Telephone: (928) 202-3999