北京市城乡结合部已成为住宅开发的新热点姚迎伟由于北京市二环路与三环路之间，高层住宅楼增加，伴随着居住人口数量的增加，从而引发公建配套、环境绿化、治安等一系列城市综合性问题；另外，北京市的危房改造，难度大、成本高足令开发商心有余而对不足，虽有一些优惠政... Beijing urban and rural areas has become a new hot spot for residential development Yao Yingwei Due to an increase in the number of high-rise residential buildings between the Second Ring Road and the Third Ring Road in Beijing, with the increase in the number of residents, public facilities, greening, law and order, etc. are triggered A series of comprehensive urban issues; In addition, the renovation of dilapidated buildings in Beijing, the difficulty of high costs so that developers are more than enough, although there are some preferential policies ...