Dorchester County, SC Zoning Overlays & Bonuses: Density Bonus Law (2026)
Key Facts
- Maximum stacked bonus
- 25% above base density
- Open space bonus
- 2% per 5% extra open space, capped at 8%
- Architectural bonus cap
- 15% combined for four features
- Community land bonus
- 2.5%-7.5% by acreage set aside
- Governing section
- Zoning Ordinance Section 10.7.7
Summary
Dorchester County lets cluster subdivisions add up to 25% more units above their base Cluster Yield Plan as a matter of right. Builders earn the bonus in pieces by adding open space, wider buffers, specific architectural features, community land or connectivity design under the Zoning and Land Development Standards.
10.7.7 Bonus Density The following bonus density may be added to the Cluster Yield Plan as a matter of right. Bonus Densities are additive in nature up to 25% per subdivision. Percentages are applied against the calculated base units allowed.
(A) Additional Open Space
(1) For every 5% additional open space from land included within the net calculated developable acreage (including wetland buffers), a 2% bonus density may be applied, or fraction thereof up to 8%.
(B) Additional Buffers (these areas cannot count toward required or additional open space)
(1) For every 12.5 feet of additional roadside buffer (up to 100 feet in total including the required 50 feet) a 1% bonus density may be applied.
(2) For every 15 feet of additional perimeter buffer (up to 45 feet in total including required 15 feet) a 1.5% bonus density may be applied.
Full Breakdown
7 of the county's Zoning and Land Development Standards (Ordinance No. 04-13) lets a cluster subdivision stack "bonus density" onto its Cluster Yield Plan "as a matter of right," capped at 25% total and calculated as a percentage of the base units otherwise allowed. The bonuses come from five tracks. Additional open space carved from the net developable acreage (wetland buffers count) earns 2% density per every 5% of extra open space, up to an 8% cap. 5% per 15 feet, though buffer acreage cannot double as open space.
5% for a foundation raised at least 1 foot above grade (unavailable to FEMA-elevated flood-zone homes). 5% for more than 10 acres. 5%), and internal trail systems (2% for a passive-space trail network, 1% for an 8-foot paved multi-use trail along the roadside buffer).
Violations & Fines
There is no fine attached to the bonus itself; instead, noncompliance costs the developer the density. Under Section 10.7.7(C), if homes built in the neighborhood fail to meet the architectural standard claimed on the Cluster Yield Plan by the time of building permit application, that density bonus is forfeited and the builder must submit a revised Cluster Yield Plan and plat back through the Planning Commission for approval before proceeding.
Frequently Asked Questions
How much extra density can a Dorchester County cluster subdivision earn?
Does a developer need special approval to use the density bonus?
What is the largest single bonus category available?
Can wetland buffer acreage count toward the open-space density bonus?
Sources & Official References
Other rules in Dorchester County
Compare Dorchester County to another location·View the South Carolina zoning overlays & bonuses overview
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