Hi JJ,
Thanks for using the MyWoodlot forum and good luck as you close on your property. It's your call of course, but it might be most prudent to wait until you have the property boundaries re-surveyed so you know for sure that any road improvements are taking place on your property, and not on your neighbor’s. In terms of cost, it will depend on things like road length (how long is this road?), road standards (i.e. what is required in terms of road widening, compaction, and gravel to get it up to standard for RV traffic), and whether or not any stream crossings are required. To help you estimate the cost, I have attached a paper that was developed by the Virginia Tech Dept. of Forest Resources and Environmental Conservation to help landowners and managers estimate the cost of road construction activities for forestry purposes. It probably won’t match up exactly with the contractor estimates, but it’s useful to have a range of costs associated with the different road improvements. The procedures for estimating road improvement costs are outlined on the third page. In your case, you could start at part 5 as the road already exists and you are looking to upgrade it. I hope this helps.
Kind regards,
Kris Brown