Oviedo ADU Rules (2026)

Oviedo ADU rules — Seminole County. The November 2024 code overhaul added a dedicated ADU section: size cap, permits, impact fees, what to verify.

By Andy West

Oviedo is in Seminole County and runs its own Land Development Code. If your address is inside Oviedo city limits, the City of Oviedo governs your ADU permit — not Seminole County. Oviedo’s code was completely overhauled in November 2024 (Ordinance 1752), and for the first time that rewrite included a dedicated ADU section with specific standards. This is a meaningful improvement over the old code, which addressed ADUs only indirectly.

Florida’s SB 48 did not become law. The bill that would have set uniform statewide ADU rules passed the Senate but died in the House when the 2026 session ended without a vote. Oviedo’s own local code governs. Any resource saying a new state ADU law changed your rights is incorrect.

What the November 2024 code overhaul changed

Before Ordinance 1752, Oviedo’s code treated ADUs under general accessory structure rules without setting clear ADU-specific standards. The 552-page rewrite adopted November 18, 2024 changed that. The new code:

  • Created a dedicated ADU section with specific dimensional standards
  • Set a clear size cap: the lesser of 1,000 sq ft or 50% of the primary home’s square footage
  • Limited parcels to one ADU each
  • Required the ADU to be built at the same time as, or after, the primary structure
  • Does not require the property owner to live on-site

This is the first time Oviedo has had straightforward written ADU rules in its code. If you researched Oviedo ADU rules before November 2024 and hit a wall, the situation has improved.

Size cap in practice

The 1,000 sq ft / 50% rule works like this:

  • Primary home is 2,500 sq ft → ADU capped at 1,000 sq ft
  • Primary home is 1,600 sq ft → ADU capped at 800 sq ft
  • Primary home is 1,200 sq ft → ADU capped at 600 sq ft

If your primary home is under 2,000 sq ft — which covers most Oviedo neighborhoods — the 50% cap will bind before the 1,000 sq ft ceiling does.

What to confirm before designing

The November 2024 LDC includes specific numbers for setbacks and height limits in its Table 5.1.1, but those specific numbers were not available in publicly searchable text at the time of this writing. Before spending money on drawings, confirm:

  • Rear and side setbacks for a detached ADU. These are typically smaller than primary structure setbacks, but the exact Oviedo numbers need to come from the code or directly from the Building Department.
  • Height limit for detached ADUs. Not confirmed in available documents.
  • Minimum lot size. The code likely specifies a minimum lot area for ADU eligibility; this was not captured in available summaries.
  • Which zoning districts qualify. Confirm your specific district is included in the by-right ADU allowance.

Call Oviedo Building Services at (407) 971-5755 or email buildingpermits@cityofoviedo.net. All of the above can be confirmed in one conversation.

Short-term rentals

Oviedo does not have a citywide ban on short-term rentals, but operating one requires a vacation rental permit — and that permit comes with real requirements:

  • Annual city permit (non-transferable if you sell the property)
  • A local contact person available 24 hours a day, 7 days a week
  • Proof of a Seminole County business tax receipt
  • A Florida DBPR transient rental license
  • Florida Department of Revenue sales tax registration
  • Valid certificate of occupancy for the ADU

Rentals under 6 months also owe 6% Florida sales tax plus 5% Seminole County Tourist Development Tax on every booking.

The practical implication: Short-term rental income is possible in Oviedo, but you need to budget for the licensing compliance stack and the recurring permit renewal before assuming the math works.

One important caution: Oviedo has a large number of deed-restricted, HOA-governed communities. Many of those HOA covenants restrict or outright prohibit short-term rentals regardless of what the city allows. Check your HOA covenants before assuming STR is an option.

Impact fees

Oviedo does not collect its own impact fees. Seminole County collects them for all properties within Oviedo city limits. Fee categories that apply to a new ADU:

  • Mobility fee (Seminole County’s replacement for the road/transportation impact fee)
  • Fire and rescue impact fee
  • Library impact fee
  • School impact fee (Seminole County Public Schools)
  • Water and wastewater connection fees (varies by service provider; some areas are served by Oviedo Utilities, others by Seminole County Utilities)

Seminole County provides an online impact fee calculator at seminolecountyfl.gov. Use it with your project’s actual square footage for a current estimate.

Rough estimate for planning purposes: A 700–1,000 sq ft ADU in Oviedo typically carries $8,000–$15,000 in total Seminole County impact fees. This is meaningfully lower than Osceola County (where the transportation fee alone exceeds $21,000) but similar to or slightly above unincorporated Seminole County. See the full impact fee comparison for context across all nine counties.

HOA warning

A significant portion of Oviedo’s housing stock is in deed-restricted communities — new construction neighborhoods especially. HOA covenants are private contracts that override zoning in every meaningful way: no city permit, no county approval, and no state law will force your HOA to allow an ADU if your covenants prohibit one.

Before spending money on design, pull your recorded deed restrictions from the Seminole County Clerk of Courts and read them. Look for language about: accessory structures, detached buildings, second dwellings, and residential use limits. If the covenants are silent on ADUs, you are probably fine — but the architectural review process may still apply.

Permit process

  1. Confirm your address is inside Oviedo city limits — not all Oviedo zip-code addresses are. Check the Seminole County Property Appraiser parcel record.
  2. Call Building Services at (407) 971-5755 to confirm your zoning district is ADU-eligible and to get the current setback, height, and lot-size numbers from the November 2024 LDC.
  3. Pull your deed and HOA covenants from the Seminole County Clerk of Courts before proceeding.
  4. Order a current survey if you don’t have one.
  5. Submit permit applications online through Oviedo’s Click2Gov portal at ovdo-egov.aspgov.com/Click2GovBP. Planning applications go through a separate portal at ovdo-egov.aspgov.com/Click2GovPE.
  6. Construction documents must be prepared and signed/sealed by a Florida-licensed architect or engineer.
  7. After permit issuance, Seminole County impact fees are billed separately before construction begins.
  8. If you plan to operate a short-term rental, apply for the vacation rental permit before the ADU is occupied — the permit is required from day one.

Building and Planning contacts:

Before you start spending

Oviedo is in a better position for ADU projects than it was before November 2024. The new code gives clear written rules for the first time. The size cap is reasonable, there is no owner-occupancy requirement, and the permit process is straightforward.

The gaps are the specific dimensional numbers — setbacks and height limit — that still need direct confirmation from Building Services. That call takes five minutes and should happen before you pay for a site plan.

Our zoning and lot check guide walks through the full parcel, survey, and setback verification process step by step. Once you have confirmed eligibility, the costs, financing, and builders sections apply to your project.