The city has standard templates for annexation petitions and annexation agreements. If you are interested in an annexation to the City of Woodstock, please contact the Building & Zoning Department at (815) 338-4305. Annexation is the integration of contiguous lands into an existing municipality with a modification of the borders of that municipality. Annexations can be carried out in different ways, but voluntary annexation is the preferred method. Through this method, a landowner or group of property owners asks the city to recover property in accordance with Illinois state law. Requests for annexation are most common because a landowner wants municipal services such as drinking water and the sanitary canal. The city may also enter into an annexation agreement with the petitioner(s) through powers conferred on the municipalities by the State of Illinois. Annexation agreements allow the city and the owners of the land that wishes to be annexed to determine the relationship between them and allow the future development of the country before annexation. Annexation agreements offer a means of advanced planning and negotiation, which must lead to a more logical development of the property, without imposing unreasonable costs on existing citizens. Unless, at the time of annexation, there is no other way to change the area map, all land attached to the city is called R, Residential District.. .