https://selling-guide.fanniemae.com/Selling-Guide/Origination-thru-Closing/Subpart-B2-Eligibility/Chapter-B2-1-Mortgage-Eligibility/Section-B2-1-1-Occupancy-Types/1032995641/B2-1-1-01-Occupancy-Types-04-07-2021.htm#Second.20Home.20Properties
我给你的是Fannie Mae的规则原文,你贴得文章是对规则的解释,如果你两个放在一起读,就应该能够读懂。
如果你是大学毕业考过TOFEL/GRE,最好自己阅读理解,不要听个半耳朵。