Land surveys will always need to be done by a professional surveyor. They will be able to advise as to the type of survey that needs to be done. You should give them as many details regarding the property as possible, including previous survey reports, maps and title reports. The land surveyor may also need written permission and a retainer before starting work.
The time it takes to complete the survey will vary. It depends on how much work is involved in obtaining all the data they need, and the time it takes to do this is often tough to predict. Costs will vary too, depending on how difficult the job is, taking into consideration how big the piece of land is, any monument to consider and time it takes to prepare maps.