房屋评估报告今起换新格式：卖给房利美房地美的贷款须用UAD 3.6，旧格式2027年6月退役
自11月2日起，卖给房利美（Fannie Mae）或房地美（Freddie Mac）的常规贷款，其新提交的房屋评估报告必须采用重新设计的统一评估数据集（UAD 3.6）及配套的新版统一住宅评估报告。这项在联邦住房金融局（FHFA）协调下推行的改革，是十多年来美国住宅评估报告格式的首次全面改版，旧格式统称 UAD 2.6。
据房利美与房地美的说明，新格式以一份可按物业类型与评估任务动态调整的单一报告，取代以往按独栋住宅、公寓等物业类型分别使用的多份固定表格。房屋如何估值的方法本身不变，改变的是评估报告的订制、提交与修订方式；强制要求以报告首次提交至统一抵押数据门户（UCDP）的日期为准，而非贷款申请或评估生效日期。
考虑到部分机构来不及完成系统切换，房利美9月30日发布贷方信函 LL-2026-08，在与 FHFA 及房地美协调后推出一次性临时例外：无法在11月2日前落实 UAD 3.6 要求的贷方，须向房利美提出申请，获批后可在2026年11月2日至2027年5月19日期间继续提交 UAD 2.6 报告。房利美同时明确，能按时落实新要求的贷方无需采取任何行动。
例外安排附带逐步收紧的条款。2027年3月1日至5月19日的「功能缩减期」内，以 UAD 2.6 提交的报告将在房利美的 Collateral Underwriter 系统中得到 999 的抵押品风险分，且以这类报告交付的贷款不再享有针对物业估值陈述与保证违规的执行救济。房利美在信函中提醒贷方，宜在2027年3月1日前完成新格式切换，以避免上述影响。
按既定时间表，2027年5月20日至6月27日，所有提交至房利美的评估报告必须使用 UAD 3.6，UAD 2.6 仅可用于重交此前已提交过的旧报告，新提交的旧格式报告将在 UCDP 触发致命编辑错误；2027年6月28日起，UAD 2.6 的政策与技术支持全部结束、旧格式不再被接受。
New Appraisal Format Takes Effect: Loans Sold to Fannie Mae and Freddie Mac Must Use UAD 3.6, Legacy Format Retires in June 2027
Starting November 2, new appraisal reports submitted for conventional loans sold to Fannie Mae or Freddie Mac must use the redesigned Uniform Appraisal Dataset (UAD 3.6) and its new Uniform Residential Appraisal Report. Coordinated with the Federal Housing Finance Agency (FHFA), the change is the first full redesign of U.S. residential appraisal reporting in more than a decade; the legacy format is known as UAD 2.6.
According to Fannie Mae and Freddie Mac, a single dynamic report that adapts to the property type and assignment replaces the multiple fixed forms previously used for different property types. How a home is valued does not change; what changes is how the report is ordered, delivered and revised. The mandate follows the date a report is first submitted to the Uniform Collateral Data Portal (UCDP), not the loan application or appraisal effective date.
For lenders unable to finish the switch in time, Fannie Mae's Lender Letter LL-2026-08, issued September 30 in coordination with FHFA and Freddie Mac, offers a one-time temporary policy exception. Lenders that cannot meet the UAD 3.6 requirements by November 2 must request the exception; approved sellers may keep submitting UAD 2.6 reports from November 2, 2026 through May 19, 2027. Lenders that implement UAD 3.6 on time need take no action.
The exception tightens over time. During the reduced-functionality period from March 1 to May 19, 2027, UAD 2.6 reports will receive a Collateral Underwriter risk score of 999, and loans delivered with such reports will not be eligible for enforcement relief for breaches of certain representations and warranties related to the appraisal and property value. Fannie Mae encouraged lenders to implement UAD 3.6 before March 1, 2027 to avoid those effects.
Under the published schedule, from May 20 through June 27, 2027, appraisal reports submitted to Fannie Mae must use UAD 3.6, with UAD 2.6 accepted only for resubmission of previously submitted reports; new UAD 2.6 submissions will result in fatal edits in UCDP. Support for UAD 2.6 ends on June 28, 2027, when the legacy format will no longer be accepted.
来源：GSM·美国（原文链接）
图片来源：图：房利美（Fannie Mae）位于华盛顿的总部大楼（资料图）。ajay_suresh 摄，CC BY 2.0，经 Wikimedia Commons。 / The Fannie Mae headquarters building in Washington (file photo). Photo by ajay_suresh, CC BY 2.0, via Wikimedia Commons.
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