Zoning; wireless facility modifications; application process. Prohibits a locality from denying an application for the modification of an existing wireless facility if (i) the modification would not substantially change the physical dimensions of the existing wireless facility; (ii) the modification involves the co-location of new transmission equipment, the removal of transmission equipment, or the replacement of transmission equipment; and (iii) the request meets the requirements of the bill. The bill provides that a modification does not substantially change the physical dimensions of the existing wireless facility if it entails the excavation or deployment of transmission equipment within 30 feet, in any direction, of the existing wireless support structure or base station. The bill also provides various requirements for local approval within a specified timeframe, permits any applicant or locality to bring claims related to the bill to any court of competent jurisdiction, and prohibits any party, other than the applicant or locality, from having an actionable appeal for the issuance of permits or authorizations made pursuant to the bill.