Easement (perpetual) Valuations for Commercial Properties
Have a stand-alone commercial building on about an acre in a metro area and the neighboring developer is finishing the plans for their development and needs an easement a few feet into our land. We don’t use it for anything and absent something strange it won’t diminish our use. 

Thoughts on how to value? Since it’s not street frontage right of way or something like that we can’t really use a diminished value proxy. I’m thinking just take the total easement area and value according to local lake value comps and add in NPV of future property taxes (prorated for that portion of the property).
[{"id": "i0227w3", "text": "Is the easement just for a fire lane? Whats the use?", "replies": [{"id": "i028lzn", "text": "Retaining wall supports. All subterranean. No above surface intrusion.", "replies": [], "depth": 2}], "depth": 1}, {"id": "i024ijr", "text": "I have valued a ton of easements. Mostly subsurface utility easements, but the methodology applies the same. You can DM me if you want to share more specific details and see if I can help you out.", "replies": [{"id": "i028mny", "text": "Will do!", "replies": [], "depth": 2}, {"id": "i0295t0", "text": "Curious, can you give the high level?", "replies": [{"id": "i04429o", "text": "The value of the easement, is based on the fee simple value of the land. The specifics of the easement agreement have a lot to do with how much of a deduction from the fee simple value is made. What can and can't the servient estate do with the easement area? How does it impact the possibility of redevelopment? They can't build over easements most  of the time, but can the use the easement area of access? \n\nIt is just very specific to each easement agreement and what rights are intact or severed from the property.", "replies": [{"id": "i04w1r1", "text": "Awesome, makes sense and appreciate the walkthrough. Certainly unique to the parcel and easement!", "replies": [], "depth": 4}], "depth": 3}], "depth": 2}], "depth": 1}]