house dimensions

[headgonekneedown]

thanks. i have a plot of land with permission, well had permision for a 2 up 2 down house to be built, this was in 95, dont think it would be a problem to get further permission. the plot is 13m x 11.small i know! house prices round here are silly high. probably lose 25k off the price of my house but reckon there could be a big enough profit to make it worthwhile. any thoughts, wheres's big mack when you need him.
cheers guys
any info greatfully recieved