The reason I was able and willing to offer more than my competitors was I had the local builder in my back pocket that had already done the feasibility survey.

Quote from @Sherry McQuage: Make sure to check the zoning to make sure mobile homes are permitted there; check for any hazardous waste designation for the area; will you need to have the parcels surveyed out in order to sell the size you intend? 

But you may check if you have to right to object to certain title or survey matters.

A survey revealed it.

Sometimes with a significant delay.In July we were prompted to answer a feedback survey.

Very nice people and always brought us gifts :)As a home builder ( small time 20 or so a year) I look at my sub base and if I start at survey and work through the house here is the demographic..

(We are working on a generalized survey to collect info on our buyers/potential buyers so we can make sure we understand who our customers are while trying to dial in their preferences and patterns.)You are doing great things. 

The Detailed Engineering Cost Estimate Approach is typically used for the purchase of used property.SURVEY OR LETTER APPROACHOnce a site inspection has been completed and all components of a property have been determined, your specialist will send a survey or letter to the contractors or subcontractors to request they provide the cost of each of the items.

You can look at an elevation map or ask for a previous survey on a property prior to purchase. 

.- Why'd you have to pay for a survey?