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Jupiter, FL Accessory Structures: ADU Rules (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified April 2026

ADU rules in Jupiter, FL, also called accessory dwelling unit regulations or granny flat ordinances, cover setbacks, owner-occupancy, parking, and permit requirements.

Key Facts

Max Size
800 sq ft or 40 percent
Zoning
Conditional use in R districts
Height
25 feet
Number
One per lot
Live Local
May unlock mixed-use ADUs

Summary

Jupiter permits accessory dwelling units (guest cottages) in certain residential zones as conditional uses, subject to a maximum of 800 square feet or 40 percent of the principal structure. Short-term rental of an ADU is restricted by state STR registration rules.

requiring, rather than authorizing, local governments to adopt, by a specified date, an ordinance to allow accessory dwelling units in certain areas; authorizing a local government to provide a density bonus incentive to landowners who make certain real property donations to assist in the provision of affordable housing for military families; requiring the Office of Program Policy Analysis and Government Accountability to evaluate the efficacy of using mezzanine finance and the potential of tiny homes for specified purposes, etc.

Source: Jupiter LDR Section 27View official code

Full Breakdown

Jupiter LDR Section 27 treats guest cottages and garage apartments as accessory structures subject to setback, height (25 feet max), and lot-coverage rules. One ADU per residential lot. Separate utility meters not allowed in single-family zones. The Live Local Act (SB 102, 2023) may enable affordable ADUs in commercial mixed-use zones. Kitchens permitted; full-time rentals to non-family may require special approval.

Frequently Asked Questions

Can I build an ADU on my property in Jupiter?
FL §163.31771 (2024) requires Jupiter (population >75,000) to allow ADUs in all single-family zoning districts. Jupiter had previously restricted ADUs in most zones, but must now comply with the state mandate. Building permits required. Flood zone elevation standards and HVHZ compliance are...
What are the size limits for an accessory dwelling unit in Jupiter?
State Mandate: FL §163.31771, ADUs must be allowed. Previous Status: Was restricted, now state-required. Flood Zones: Elevation required in flood-prone areas. Permit: Building permit required.

Sources & Official References

Other rules in Jupiter

Shed & Carport RulesSome RestrictionsParking Rules: RV & Boat ParkingSome RestrictionsADU Rental RestrictionsSome RestrictionsParking Rules: EV ChargingSome RestrictionsParking Rules: Driveway RulesSome RestrictionsParking Rules: Commercial & Oversized VehiclesSome RestrictionsParking Rules: Loading ZonesSome RestrictionsFence Regulations: Fence Permit RequirementsSome Restrictions

All Jupiter rules

How Jupiter compares: Easiest Cities to Build an ADU·Florida rules heatmap·Compare Jupiter to another location·View the Florida accessory structures overview

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ADU Rules in Nearby Cities

How other cities in Palm Beach County handle adu rules.

Boynton Beach, FL
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West Palm Beach, FL
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