3 Things To Know – Annexation: 3 Things To Know about Annexation 1. Annexation must be initiated by the landowner. 2. Areas to be annexed must be contiguous to the corporate limits of Clarkston Town at the time of an annexation petition.  3. In areas where municipal services are not presently extended, services will be extended on an as-needed basis at the cost of the developer. All extensions of municipal services must comply with all town ordinances and policy criteria and will be paid for by the individual developer or property owner.