How can my taxes increase?

When additional taxes are voted by the people, an individual’s property tax bill will increase. Also, when market value increases, naturally, so does the assessed value. If you were to make improvements to your existing property, for instance: add a garage, add an additional room, the "full and fail cash value" and, therefore, the assessed value would also increase. The Assessor has not created the value. People make the value by their transactions in the marketplace. The Assessor simply has the legal and moral responsibility to study those transactions and appraise your property accordingly.