York County, SC Fence Regulations: Retaining Walls (2026)
Key Facts
- Under 4 ft
- 0 ft setback (minor accessory use)
- 4 ft or taller
- 3 ft minimum from lot line
- Governing tables
- §§ 155.622-1, 155.1290-1
- Coverage
- Unincorporated York County only
- Penalty
- Up to $500/day, § 155.9999
Summary
York County treats a retaining wall under four feet tall as a minor accessory structure that can sit right on the property line, but a wall four feet or taller must stay at least 3 feet from the lot line under the § 155.1290 encroachment table, on top of whatever the zoning district's base setback otherwise requires.
§ 155.622(A)(2)(b) Minor accessory uses and structures. Minor accessory uses and structures include uses and structures that are not unique to a particular land use, including utility poles; mailboxes; flagpoles; fences; landscape features; fruit, vegetable, and ornamental gardens; driveways; parking areas; and retaining walls less than four feet in height. § 155.1290 ENCROACHMENTS. Table 155.1290-1: Allowed Encroachments into Required Yards and Setbacks. Minor accessory uses and structures - Any yard - No max - 0 ft. Retaining walls four feet in height and greater - Any yard - -- - 3 ft.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-49: Supplement contains: Local legislation current through Ord. 3925, passed 6-16-25).
Full Breakdown
622(A)(2)(b) classifies 'retaining walls less than four feet in height' as a minor accessory use, grouped with fences, mailboxes, flagpoles and driveways. 622-1 gives every minor accessory use and structure a 0-foot setback on all sides, so a short retaining wall can be built directly on the lot line. 622-1 would otherwise hold it to the same setback the zoning district requires of the principal structure. 1290-1, which lists allowed encroachments into required yards and setbacks, specifically carves out a narrower standard for these taller walls: 'Retaining walls four feet in height and greater...
Any yard... 3 ft' minimum setback from the lot line, letting the wall come closer to the property line than the full district setback would otherwise permit. The same encroachment table confirms minor accessory uses and structures, including sub-four-foot walls, face 'No max' limit on encroachment and a '0 ft' minimum setback. 2 (Base District Dimensional Standards), the same subpart that sets the underlying district setbacks these tables modify.
Violations & Fines
Building a retaining wall four feet or taller closer than the 3-foot minimum lot-line setback in Table 155.1290-1, or otherwise outside the applicable setback, is a misdemeanor under § 155.9999, punishable by a fine of up to $500 per day per violation, with the Planning and Development Services Director able to order the wall relocated or removed.
Frequently Asked Questions
Can I build a low retaining wall right on my property line?
How close can a tall retaining wall be to my neighbor's line?
Does a taller wall have to match my house's building setback?
Does this apply to a wall behind my Rock Hill or Fort Mill house?
Sources & Official References
Other rules in York County
Compare York County to another location·View the South Carolina fence regulations overview
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