City · Florida

ADU rules in St. Pete Beach

2 sources

These are the primary sources for accessory dwelling unit regulations in St. Pete Beach: the city's own zoning code, planning department pages, and permit guides. Start here before talking to anyone: the rules below are what your permit reviewer will apply.

Rules at a glance

Detached (backyard) ADU
Not allowed

St. Pete Beach's Land Development Code has no provision authorizing an accessory dwelling unit, guest house or any other second unit on a house lot. The single-family districts allow 'Detached single-family only' dwellings and prohibit 'All uses and structures not of a nature specifically or provisionally permitted herein.' Accessory structures are kept non-habitable: a detached garage may 'in no case' have 'any sleeping room, kitchen facilities or plumbing', a storage building is capped at 120 sq ft and limited to household storage, and a patio cover may not be enclosed so 'that it could be construed as living space.'

LDC §6.13(a)(2)c, §6.13(b), §6.13(c)(3); §8.2; §8.5 (same pattern in §§9.2, 9.5, 10.2, 10.5)
Attached or internal ADU
Not allowed

No attached or internal second unit is authorized. A dwelling unit is 'a complete, independent living facility for the exclusive use of one family' that 'shall have no more than one kitchen and shall provide complete internal access to all rooms in the unit', which rules out a lockable in-house apartment with its own kitchen. In RLM-2, RM, BR and some mixed-use districts a second unit can only be built as a two-family or multifamily dwelling within the district's density cap, which is a different use, not an accessory unit.

LDC §2.1 (Residential dwelling unit); §8.2; §11.2; §12.2
Maximum size
Not applicable; no ADU provisions exist

No ADU size limit exists because the use is not authorized. The only near-miss is the Pass-a-Grille Overlay, whose 'accessory structure envelope' lists 'carriage houses, pool houses, detached living quarters' among accessory structures and caps their footprint at 400 to 800 sq ft depending on building type; it governs the form of accessory buildings and grants no right to occupy one as a separate dwelling.

LDC §20.02(a); §20.15 (building type tables)
Owner occupancy
No ADU allowed

Not applicable: the code allows no ADU of any form, so no owner-occupancy rule can attach to one. The single-family districts prohibit every use not specifically permitted, and accessory structures may not contain sleeping rooms, kitchens or living space.

LDC §8.5; §6.13(a)(2)c
Extra parking
Not applicable; no ADU provisions exist

No ADU parking standard exists because the use is not authorized. Where a district does permit a second unit as a two-family dwelling, the citywide table requires 2 spaces per unit for 'Residential Single-family and Two-family' uses.

LDC §23.5
Approval process
No ADU allowed

Not applicable: there is no permit path for an ADU because the use does not exist in the code, and uses not specifically or provisionally permitted are prohibited. In the Pass-a-Grille Overlay, multi-unit building types require units 'existing prior to redevelopment' (Sec. 20.07 density rules), so new second units cannot be created there either.

LDC §8.5; §20.07
Rental restrictions
Not applicable to ADUs; no ADU provisions exist. Separately, any home in the RU-1, RU-2, RLM-1 and RLM-2 districts may not be used for transient occupancy (stays under one month offered more than three times in 12 months); RM and the Pass-a-Grille Overlay allow stays under 30 days up to three times in any 12-month period per parcel. Rentals of one month or more are allowed citywide.

RU-1 permits 'Detached single-family only. Such dwellings shall not be used for transient occupancy', and RU-2, RLM-1 and RLM-2 carry the same sentence (Ord. 2004-18). Transient occupancy is occupancy 'offered or advertised as being available for a term of less than one month, more than three times in any consecutive 12-month period.' RM (Sec. 12.2) and the Pass-a-Grille Overlay (Sec. 20.03) allow transient occupancy 'so long as any transient occupancy of less than 30 days does not occur more than three times in any 12-month period on any parcel.' The district rules come from Ord. 2004-18, which predates the June 1, 2011 cutoff in F.S. 509.032(7)(b) (the Pass-a-Grille allowance was added by Ord. 2016-19 as a loosening of the underlying bans); the city's Short-Term Rental page confirms that rentals of one month or more are allowed in all residences. The city has no rental registration program, and on August 19, 2026 the City Commission chose to focus on enforcing these rules rather than create one.

LDC §2.1 (Transient occupancy); §§8.2, 9.2, 10.2, 11.2, 12.2; §20.03
The fine print: 5 caveats that can change the picture
  • St. Pete Beach has no ADU ordinance: no section names or authorizes an accessory dwelling, and the 'no' values rest on the single-family districts' prohibition of every use not specifically permitted (Secs. 8.5, 9.5, 10.5), the one-kitchen, fully connected dwelling unit definition (Sec. 2.1) and the habitability bar on accessory structures (Sec. 6.13).
  • Accessory structures are affirmatively barred from habitability: detached garages may contain no sleeping room, kitchen facilities or plumbing, storage buildings must be non-habitable and no larger than 120 sq ft, and patio covers may not be enclosed as living space (Sec. 6.13).
  • Some older rear cottages survive as lawful existing units, and city Historic Preservation Board records from 2025 and 2026 describe 'accessory dwelling' buildings in Pass-a-Grille; the Pass-a-Grille Overlay's accessory structure envelope (400 to 800 sq ft footprints) governs the form of such buildings but creates no right to build a new second unit.
  • A second unit can be built only as a two-family or multifamily dwelling in districts that permit those uses (for example RLM-2, RM and BR) and within the district's density cap; that is a duplex or multifamily project, not an ADU.
  • Do not confuse St. Pete Beach with the City of St. Petersburg, a different jurisdiction whose Ch. 16 Sec. 16.50.010 does allow ADUs.

Summarized from St. Pete Beach's ordinance text, read September 2026; every row links the code section it came from. Rules often vary by zone and lot, so treat this as orientation, not a permit determination, and confirm with the planning department before you commit to a design.

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ADU regulations

Short-term rental rules

Planning to rent your ADU on Airbnb or VRBO? St. Pete Beach regulates short-term rentals separately; check these before counting on nightly rental income.

Florida statewide law also applies

Florida sets baseline ADU rights at the state level. Where local rules are stricter than state law allows, state law usually wins, so both are worth reading.

See Florida statewide rules

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