St. Johns County, FL Zoning Overlays & Bonuses: Density Bonus Law (2026)
Key Facts
- Wetland bonus formula
- Lesser of 10% wetland or 10% upland acreage x density
- Workforce bonus rental split
- 20% very low/low, 20% moderate income
- Affordability guarantee term
- Minimum 10 years, recorded with Clerk
- Sufficiency review
- 5 working days by County Administrator
- Final approval authority
- Board of County Commissioners
- Transportation showing trigger
- Density over 8/acre or bonus 70%+
Summary
Unincorporated St. Johns County runs four density bonus programs under LDC Part 5.07-5.10: Workforce/Affordable Housing, Wetland preservation, Variable (PUD), and Optional. The Wetland Density Bonus adds units equal to the lesser of 10% of preserved wetland acreage or 10% of developed upland acreage, multiplied by the Future Land Use Map density. All bonuses need Board of County Commissioners approval tied to a Development Order.
There shall be a density bonus allowed for the preservation of Wetlands contained within a proposed Development site, equal to the lesser of: A. Ten percent (10%) of the Wetland acreage preserved, or B. Ten percent (10%) of the upland acreage proposed for Development, Multiplied by the applicable residential density allowed by the Future Land Use Map. In the event this density bonus is exercised by an owner or Developer, preservation of the Wetland acreage which was the basis for the calculation of the Wetland Density Bonus shall be by deed restriction, conservation easement, or other written evidence acceptable to the County.
Official source re-checked September 7, 2026: the cited page had not changed since it was quoted.
Full Breakdown
The Wetland Density Bonus, LDC Sec. 03, grants a density increase equal to the lesser of ten percent (10%) of the wetland acreage preserved or ten percent (10%) of the upland acreage proposed for development, multiplied by the residential density the Future Land Use Map allows; the preserved wetlands must then be locked in by deed restriction, conservation easement, or other written instrument the County accepts. 07, is discretionary and runs concurrently with a rezoning, PUD amendment, or Special Use application. For rental projects, 20% of the bonus units must serve very low and low income households and 20% moderate income; for ownership projects it is 20% low and 20% moderate.
A Developer must record a guarantee with the Clerk of the Circuit Court preserving affordability for a minimum of ten years for both rental and ownership units, and that guarantee runs with the land against future tenants and purchasers. Any project seeking a density above eight units per acre, or a bonus of 70% or more, must show proximity to transportation networks and employment. Applicants attend a presubmittal conference, and the County Administrator must determine petition sufficiency within five working days, issue any deficiency notice within three working days, and treat the petition as withdrawn if deficiencies are not cured within twenty working days.
The Planning and Zoning Agency makes a recommendation, but the Board of County Commissioners holds final authority and may approve at a lesser density than requested. 10) instead tie added density to PUD processing, central water and sewer service, park and open-space dedication, and extra buffering, with standards set by the Comprehensive Plan rather than a fixed LDC formula.
Violations & Fines
There is no fine schedule; enforcement runs through the recorded affordability guarantee itself. Once filed with the Clerk of the Circuit Court under Sec. 5.07.03.C, the restriction is enforceable by future tenants and purchasers as a covenant running with the land, and the County Attorney's office reviews the guarantee form before certification of the final site plan. A density bonus is void if the Development Order it rides on is never approved, and an insufficient bonus petition lapses automatically once twenty working days pass without a cure under Sec. 5.07.05.C. Bonus density earned under Part 5.07 cannot be resold through the County's Transfer of Development Rights program per Sec. 5.07.06.B.
Frequently Asked Questions
How much extra density can wetland preservation earn in St. Johns County?
Who approves a workforce housing density bonus request?
How long must workforce or affordable units stay affordable?
Can a density bonus be sold or transferred to a new owner?
Sources & Official References
Other rules in St. Johns County
Florida rules heatmap·Compare St. Johns County to another location·View the Florida zoning overlays & bonuses overview
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