Airplanes home base airport is always one of the info items requested for underwriting, so I imagine it can have some impact on on the premium but I don't know to what extent.
What I do know is that you probably don't want to hide that fact... the form you provide that info on generally has a statement regarding you are certifying that the info provide is true and correct. If you ever made a claim for an accident that occurred at your strip you could find your self in a position where the Underwriter could / would deny your claim.