Springfield, OR Fence Regulations: Retaining Walls (2026)

Springfield's grading rules live in Municipal Code §§ 8.400 to 8.436, the Land and Drainage Alteration Program (LDAP), administered by the Development and Public Works director. A Land and Drainage Alteration Permit is required whenever construction disturbs 50 cubic yards or more of material, 7,000 square feet on one lot, 500 square feet in a designated sensitive area, one acre across phases, or any cut or fill placed under an inhabited structure (§ 8.412(1)). A Type I permit covers commercial work or anything in a sensitive area; a Type II permit covers single-unit and duplex residential work outside a sensitive area (§ 8.412(3)).

Type I applications must include a Land and Drainage Alteration Plan and, unless the director waives it, a Soils and Geology Report from a licensed engineer that must set retaining wall locations, cut and fill height limits, and slope steepness alongside any state building code excavation requirements (§ 8.412(6)(b)). The director will not issue related permits, including foundation and building permits, until the LDAP has been site-inspected and approved or found unnecessary (§ 8.412(5)). Where a retaining wall or major drainage structure is not already covered by an approved improvement plan, § 8.432(1) requires a separate permit and fee for it, built in accordance with the state building code; plan-checking and grading permit fees are set by city council resolution (§ 8.432(1)-(2)).

The Development Code defines a retaining wall as an engineered structure constructed to hold back or support an earthen bank (SDC § 6.1.110). An applicant denied a permit can appeal to the city manager or designee in writing within 30 calendar days of the denial (§ 8.414(3)). The director may suspend or revoke a permit if site conditions vary from the approved plans, construction departs from approved grades, or the site lacks a qualified inspector working under a registered engineer when the permit requires one (§ 8.430(1)).