If you’re thinking of creating boundary surveys to be filed with the city, county, state, that would be a legal document with the expected accuracy of ground based equipment. I’m not sure a
Mavic 2 Pro would get you there.
For vertical control (elevations) laying out parking lots, plot plans, landscaping, sidewalks and such, the Mavic could do that with DroneDeploy and similar software. Customers like nice big high resolution maps to look at. Often aerial maps can be obtained from the city/county but they are dated. That’s where the drone comes in handy, and much cheaper than an airplane.
If I’m to fly a property for ingress/egress planning for instance, I’ll get any maps I can from the city, as it makes the flight plan quicker and easier, plus, the client can better input before flying. Do you have experience land surveying? If not, tag along with a survey crew for a few days and have some fun learning. Surveyors are a colorful lot.