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St. Johns County, FL Zoning Overlays & Bonuses: Density Bonus Law (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 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.

These county ordinances apply to unincorporated areas of St. Johns County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

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.

View official code

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?
Under LDC Sec. 5.08.03, the bonus equals the lesser of 10% of the wetland acreage you preserve or 10% of the upland acreage you develop, multiplied by the density the Future Land Use Map allows for the site. The preserved wetlands must then be secured by deed restriction or conservation easement.
Who approves a workforce housing density bonus request?
The Planning and Zoning Agency reviews the petition and makes a recommendation, but the Board of County Commissioners holds final authority under Sec. 5.07.05.F and may approve the requested density, a lesser density, or deny it outright alongside the linked Development Order.
How long must workforce or affordable units stay affordable?
A minimum of ten years for both rental and ownership units, per Sec. 5.07.03.C. The guarantee must be recorded with the Clerk of the Circuit Court and runs with the land, binding future tenants and purchasers, not just the original developer.
Can a density bonus be sold or transferred to a new owner?
Yes, under Sec. 5.07.06.B a density bonus transfers with the Development Order if the new owner agrees to fulfill all original terms. It cannot, however, be cashed in through the County's separate Transfer of Development Rights program.

Sources & Official References

Other rules in St. Johns County

All St. Johns County rules

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