Home > Personal > Personal Lending > Mortgage > Mortgage Resources > Glossary > Backfill Backfill November 9, 2021 The replacement of excavated dirt into a hole, crevice or against a structure such as a foundation.You Might Also Like: Living QuartersSpring Maintenance Checklist for Your Home All Things CommunityHoli-days of Giving 2022 Everyday MoneyGiving Back During the Holiday Season Living QuartersYour Top Mortgage Questions Answered Living QuartersHow to Understand Mortgage Language