Sedgwick County calculates the property tax due based on the fair market value of the home or property in question, as determined by the Sedgwick County Property Tax Assessor. Each property is individually t each year, and any improvements or additions made to your property may increase its appraised value.
In certain states like NY you can actually adopt an adult even if they've illegally entered the US. You can pose this question to different attorney's and I assure you that you'll get multiple answers, including no. Always ask an attorney who specializes in family law; more specifically in adoptions.
The age 16 rule in the Immigration and Nationality Act also doesn't apply to illegal aliens. Basically, the law says that an adoption visa won't be granted to any child 16 or over, unless he/she is the biological sibling of a child already adopted by the same family, in which case the age limit goes to 18.