W. Va. Code § 19-17-7
Any person desiring to build or to repair a partition fence may give notice in writing to the owner of any adjoining lands, or to his agent, of his intention to build or repair such fence and requiring him to build or repair his just portion thereof, which notice shall state the description and kind of the fence proposed to be built or such repairs as are proposed to be made. The person so served with such notice shall, within ten days thereafter make answer in writing and serve the same upon the person desiring to build or repair such fence, which answer shall state any objections to such notice, and upon failure to do so he shall be liable to the person building or repairing such partition fence for his just proportion of the cost thereof if he shall fail to build or repair his proportion of the same.
W. Va. Code § 19-17-7