Online LOMC

Online LOMC is FEMA's web-based submission portal for Letters of Map Change, including LOMA, LOMR-F, CLOMA, and CLOMR-F requests. It is the official channel for uploading forms, supporting documents, and case correspondence.

It is not an eligibility tool or a replacement for deciding whether a case is a LOMA, LOMR-F, or something else. It also does not automatically validate the accuracy of elevation data; FEMA still reviews the technical content after submission.

Property owners, licensed surveyors, engineers, and third-party case preparers can all register and submit. The account holder is responsible for the accuracy of the information attached to the case.

FEMA generally accepts PDF for forms and correspondence, and common image formats for photos. Large files may need to be split, and the portal typically enforces per-file and per-case size limits.

Online LOMC is the general submission portal for any Letter of Map Change. eLOMA is a narrower, automated sub-workflow inside Online LOMC that is only available to licensed or certified professionals for qualifying LOMA cases.

Re-check the required fields, file sizes, and form versions. Portal rejection is often caused by missing property information, unsigned forms, or an incorrect panel reference rather than a technical FEMA review decision.

FEMA has moved most Letter of Map Change activity to the online system, though paper submissions are accepted in limited circumstances. Online submission is faster and easier to track, so it is generally the recommended path.

Use the portal's password reset first, then contact the FEMA Map Information eXchange if the account remains locked. Make sure the email address on file matches the one used during initial registration.