ORS § 523.160
If any person is required by a district to pay the cost of extending a geothermal heating pipeline adjacent to property other than the property of the person so that geothermal heating service is provided for such other property without further extension of the geothermal heating pipeline, the district shall require the owner of the other property, prior to providing geothermal heating service to that property, to refund to the person required to pay the cost of extending the geothermal heating pipeline, a pro rata portion of the cost of the extension. The right to require such refund shall not continue for more than 10 years after the date of installation of the extension of the geothermal heating pipeline. The amount to be refunded shall be determined by the district and such determination shall be final.
ORS 523.160