地下车库楼板和地面开裂严重，第三方检测机构统计的裂缝达到1431条⋯⋯近日，上海浦东新区热销楼盘港城中环汇云启在预看房之后，遭到不少业主质 疑。 据多位业主反映，小区的地下车库出现"边裂边补，边补边裂"情况，由于担心安全问题，业主们要求第三方检测机构进场，公开检测报告。 上海海港新城房地产有限公司（以下简称港城房产）市场部一位负责人1月28日向《每日经济新闻》记者（以下简称每经记者）表示，公司将与业主积极 沟通，妥善处理解决，后续有进展会及时对外公开。 业主：边裂边补，边补边裂 港城中环汇云启是上海港城集团旗下港城房产的"云字系"住宅项目，是集团首个进驻上海张江科学城的城市综合体项目的住宅部分。 该项目于2024年9月一次性推出720套79～187㎡新房，凭借相对低的入市均价（6.5万元/㎡）而迅速热销。克而瑞统计数据显示，港城中环汇云启曾创下 2024年10月上海市商品房楼盘成交套数及面积榜月度第一的纪录。 出于性价比的考虑，浦东张江的上班族陈丽（化名）以单价6.98万元/㎡的价格买了一套港城中环汇云启的房子，面积为99㎡。 受访者供图 受访者供 陈丽告诉每经记者，按照合同约定，房子将于今年6月交付，开发商 ...

Core Insights - The Chinese real estate market has experienced rapid growth since the housing reform in 1998, with a total of 600 million residential units reported by the Ministry of Housing and Urban-Rural Development, including rural self-built houses and properties for resettlement [1] - Despite the large number of residential units, there is a significant issue of oversupply, particularly with high-rise buildings, which were once favored for their aesthetic appeal and ability to accommodate more residents on limited land [1] Group 1 - High public area ratio is a significant drawback of high-rise residential buildings, with common public area ratios reaching 25% to 30%, leading to additional financial burdens for buyers [2] - Inconvenient access is another major pain point, as high-rise buildings often have limited elevator capacity, resulting in long wait times during peak hours and difficulties during elevator maintenance [3] Group 2 - High-rise buildings face challenges regarding demolition, as the high costs associated with relocating numerous residents make it unlikely for such projects to be initiated [5] - Concerns about building quality arise due to rushed construction practices and financial difficulties faced by developers, with the average lifespan of domestic buildings estimated at only 30 years, far below the intended 70 years [5] - Safety hazards are present in high-rise buildings, particularly during emergencies like earthquakes or fires, where elevator failures can complicate evacuation efforts [5] - Maintenance costs for high-rise buildings are expected to rise over time, placing additional financial pressure on homeowners as equipment ages and requires repair or replacement [5]