Note: The DearEsq free 'ask a lawyer' site is offered as a free informational service to the public and is not intended as legal advice. Laws vary from state-to-state, and in addition every situation is unique, and relevant facts may not be known. The answer to the question posed below may not apply to in your state or to your situation. For legal advice in your state and your situation you should consult with an attorney in your state who is familiar with the rules and laws in your state.
‘We have a drain-field and reserve drain-field easement on our property, which is partially in an area we want to build. We have talked to our neighbors and redesigned their reserve drain-field to be out of the way, but we need to move the easement line over about 10 feet. How do we legally/officially modify the easement line? I live in King County, WA.’
Question: I can’t give a definitive answer for Washington state, but most likely you’ll need to have an attorney draft a document similar to the one that created the easement. You’ll probably also need a surveyor to create a proper description of where the new easement is.