Zakah on plots of land with the intention to resell in the future

As-salamu alaykum, Do you need to pay zakah every year on a plot of land if the intention at the time of purchase was to resell, maybe 10 or more years, in the future ? On askimam.org they say that you don't need to pay zakah every year if the intention is to resell in the future: http://www.askimam.org/public/question_detail/26513 However other sources say that you do need to pay every year: http://seekersguidance.org/ans-blog/2012/03/04/zakat-on-land-and-determining-market-value/ Could someone please clarify exactly what the Hanafi position is. Does buying land with the intention to resell a long time in the future make it stock in trade ? Jazāk allāhu khayran