A wide range of tile colours and profiles is available. Concrete tiles cost from approximately $65 per square metre. Quality French clay tiles start from around $180 to $240 per square metre with lead flashings.
The market value, assessed value and taxable value of your house are often nothing alike. The market value is what your house would sell for in the current market. The assessed value is what your county tax assessor reports the house is worth for purposes of calculating your property tax bill. Taxable value is the figure you actually pay tax on.
Property tax is  a levy issued by a government on a person's real or personal property. The property is assessed to give it a value, and then that value is taxed. The amount of tax owed is determined by multiplying the fair market value of the property by the current tax rate. The amount taxed on a given property may change over time based on a reassessment of the property's value. Typically, property tax is not increased as the value of the home naturally increases; the value of the tax generally remains based on the value of the property at the time it was purchased.