saman vali nouri, researcher urban economy. problem of housing in our country and especially in the metropolis of tehran is caused by the waste of land and housing into capital goods and communication. it doesn't have much supply and demand, so it can be helped to balance it through the construction of small scale houses. another point is that if we also build houses , they will be bought and hoarded by real estate traders. the proof of that is the existence of 45 thousand empty houses in tehran's 22 district. well, we saw the report of my colleague mohammad masauri. mr. tabatabai mr. that omranzadeh pointed out a few points about the cultural point, the point of the cost of the housing price, which is what happened to you you are referring to it, it will not be effective. please give your answer . it is one of the most important issues in the field of housing. we also mentioned in the previous submissions that the more we concentrate, the more the situation of the target society will be. there are no houses in the big cities,