Zillow Rent Index, 2010-Present

# Context

Zillow operates an industry-leading economics and analytics bureau led by Zillow’s Chief Economist, Dr. Stan Humphries. At Zillow, Dr. Humphries and his team of economists and data analysts produce extensive housing data and analysis covering more than 500 markets nationwide. Zillow Research produces various real estate, rental and mortgage-related metrics and publishes unique analyses on current topics and trends affecting the housing market.

At Zillow’s core is our living database of more than 100 million U.S. homes, featuring both public and user-generated information including number of bedrooms and bathrooms, tax assessments, home sales and listing data of homes for sale and for rent. This data allows us to calculate, among other indicators, the Zestimate, a highly accurate, automated, estimated value of almost every home in the country as well as the Zillow Home Value Index and Zillow Rent Index, leading measures of median home values and rents.

# Content

The Zillow Rent Index is the median estimated monthly rental price for a given area, and covers multifamily, single family, condominium, and cooperative homes in Zillow’s database, regardless of whether they are currently listed for rent. It is expressed in dollars and is seasonally adjusted. The Zillow Rent Index is published at the national, state, metro, county, city, neighborhood, and zip code levels.

Zillow produces rent estimates (Rent Zestimates) based on proprietary statistical and machine learning models. Within each county or state, the models observe recent rental listings and learn the relative contribution of various home attributes in predicting prevailing rents. These home attributes include physical facts about the home, prior sale transactions, tax assessment information and geographic location as well as the estimated market value of the home (Zestimate). Based on the patterns learned, these models estimate rental prices on all homes, including those not presently for rent. Because of the availability of Zillow rental listing data used to train the models, Rent Zestimates are only available back to November 2010; therefore, each ZRI time series starts on the same date.

# Acknowledgements

The rent index data was calculated from Zillow's proprietary Rent Zestimates and published on its website.

# Inspiration

What city has the highest and lowest rental prices in the country? Which metropolitan area is the most expensive to live in? Where have rental prices increased in the past five years and where have they remained the same? What city or state has the lowest cost per square foot?

{'# Context': 'Zillow公司运营着由首席经济学家斯坦·汉弗莱斯博士领导的行业领先的经济分析与研究部门。在Zillow，汉弗莱斯博士及其由经济学家和数据分析师组成的团队生产了涵盖全国超过500个市场的广泛住房数据和分析。Zillow研究部产出多种与房地产、租赁和抵押贷款相关的指标，并就影响住房市场的当前主题和趋势发表独特的分析报告。', '# Content': 'Zillow租赁指数表示特定地区的月度租金中位数，涵盖Zillow数据库中的多户住宅、单户住宅、公寓和合作社住宅，无论它们目前是否已列出用于出租。该指数以美元为单位表示，并进行了季节性调整。Zillow租赁指数在全国、州、大都市、县、市、社区和邮政编码等不同层级进行发布。
Zillow通过专有的统计和机器学习模型生成租赁估算（租赁Zestimate）。在每个县或州内，这些模型观察最近的租赁列表，并学习各种住宅属性在预测现行租金中的相对贡献。这些住宅属性包括关于住宅的物理事实、先前的销售交易、税收评估信息和地理位置，以及住宅的估计市场价值（Zestimate）。基于学习到的模式，这些模型对包括当前未出租的住宅在内的所有住宅估算租金。由于用于训练模型的Zillow租赁列表数据的可用性，租赁估算仅可追溯到2010年11月；因此，每个ZRI时间序列均从同一日期开始。', '# Acknowledgements': '租赁指数数据是根据Zillow的专有租赁估算计算得出的，并在其网站上发布。', '# Inspiration': '哪个城市的租金价格最高和最低？哪个大都市区的居住成本最为昂贵？过去五年中哪些地区的租金价格上涨，哪些地区保持不变？哪个城市或州的每平方英尺成本最低？'}