ADU Pass
Casselberry
No County portion
Also in: Seminole County
ADU Pass helps homeowners in Casselberry, No County, Florida navigate the permit paperwork for building an accessory dwelling unit. This area covers 1 ZIP code.
Map
ADU details
ADU legality: allowed-with-restrictions
Casselberry is a suburban Orlando city in southern Seminole County, incorporated 1940. Population approximately 28,800 (2023). Mid-density suburban character with the Wirz Park / Lake Concord lakefront and the Casselberry Greenway. Located within the Orlando metropolitan area along US-17/92 (Orlando Avenue).
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 200 | $2,700 | $46,000 | $48,700 |
| 600 | 600 | $2,700 | $138,000 | $140,700 |
| midpoint | 600 | $2,700 | $138,000 | $140,700 |
| maximum | 1,000 | $2,700 | $230,000 | $232,700 |
Fee breakdown (as of 2026-04)
Permitting process
Viability (permitted uses)
- Long-term rental: yes Long-term rental permitted; Orlando-metro workforce demand.
- Short-term rental: with-restrictions Florida § 509.032 partially preempts STR regulation. Casselberry STR demand benefits from Orlando-metro/theme-park visitor traffic; city zoning still constrains location.
- Office rental: with-restrictions Detached office rental requires home occupation permit.
- Home office: yes Home occupation permitted.
- Studio / workshop: yes Personal artist studio is a permitted accessory use.
- Agriculture: with-restrictions Limited urban agriculture in select zones.
- Relative support: yes Family-occupancy ADU permitted; § 193.703 FS granny-flat reduction available.
Incentives
Contacts
Utilities
- Water: City of Casselberry Water · 25d connect · $4,500
- Sewer: City of Casselberry Wastewater · 30d connect · $6,500
- Electric: Duke Energy Florida · 21d connect · $1,800
- Gas: TECO Peoples Gas (limited mains); LP / propane elsewhere · 30d connect · $1,500
Property values & taxes
Construction timeline
Realistic total: best 7mo · typical 11mo · worst 16mo
Modular pathway inspectors are occasional with modular
Financing
State ADU loans:
Insurance impact
HOA prevalence & preemption
Many newer Casselberry subdivisions (Hidden Hollow, Lake Howell area) carry HOAs that frequently restrict ADUs.
Regulatory overlays (2)
- flood-zone
FEMA SFHAs along Lake Concord, Lake Howell, Lake Triplet, and Howell Creek; many in-town Casselberry parcels are Zone X. - wetland-overlay
Lakefront parcels subject to FDEP and SJRWMD wetland permitting.
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Amendment
- Amendment
Legal history (timeline)
Current ordinance: City of Casselberry Code of Ordinances — Land Development Code, adopted 2008-01-01, last amended 2024-01-01
- 1940-12-21 — City of Casselberry incorporated (city-charter)
Casselberry incorporated as a Florida municipality.
Effect: Established municipal authority over land use within city limits. - 2007-07-01 — Florida Statutes § 163.31771 enacted (state-statute)
Authorized Florida local governments to adopt ADU ordinances.
Effect: Permissive Florida ADU framework.
Known issues (1)
- other — Lakefront flood and wetland overlays add cost on Lake Concord / Lake Howell parcels.
County: no attribution (synthetic bucket)
No county
This city sits in the state's "no county" bucket — its ADU rules derive directly from state law and city ordinance without a county intermediary. No county-level sections apply.
Florida state — ADU law and programs
State ADU law
Florida does NOT currently have a statewide ADU preemption law in effect. Florida Statutes § 163.31771 (enacted 2004, last amended 2020) is permissive — it authorizes local governments to adopt ADU ordinances but does not require them to. ADU rules are therefore set municipality-by-municipality: Miami-Dade, Orlando, St. Petersburg, Tampa, and a growing set of Florida cities have their own ordinances; many smaller counties and cities still prohibit or restrict ADUs by default. A preemption bill (SB 48 / HB 313) is pending in the 2026 legislative session and is likely to pass given that its 2025 predecessor cleared the Senate 37-0 and House 97-10 before dying on a procedural amendment dispute.
- Florida Statutes § 163.31771 — Accessory dwelling units — Permissive (not mandatory) statute. Defines an ADU as 'an ancillary or secondary living unit, that has a separate kitchen, bathroom, and sleeping area, existing either within the same structure, or on the same lot, as the primary dwelling unit.' Authorizes — but does not require — local governments to adopt ordinances allowing ADUs in single-family residential zones. Contains no size caps, no owner-occupancy rules, no HOA preemption. All substantive rulemaking is local.
State financing programs
Florida Housing Finance Corporation (FHFC) does not operate an ADU-specific state loan or grant program. FHFC's primary affordable-housing lever at the ADU tier is the State Housing Initiatives Partnership (SHIP), which distributes state documentary-stamp-tax revenue to all 67 counties and 52 entitlement cities for locally-administered housing programs — some of which may fund ADU construction at the local level (notably Orange County's Affordable ADU Loan Program, run through the Orange County Housing Finance Trust). FHFC's FL Assist down-payment programs and HFA Preferred / HFA Advantage conventional loans apply to ADU-eligible primary residences but do not single out ADUs. Proposed CS/SB 1440 would create a state property-tax exemption of up to 100% of assessed value for an ADU rented at affordable rates.
State housing programs
Florida does not currently operate a statewide pre-approved ADU plan catalog (unlike California or Washington). State-level ADU implementation is driven by (a) the permissive § 163.31771 which lets willing jurisdictions adopt ordinances, (b) SHIP pass-through funding to local ADU programs (Orange County's Affordable ADU Loan Program is the model), and (c) the affordable-housing property-tax exemption under the Live Local Act (SB 102 / SB 328). The Department of Economic Opportunity (DEO) — now reorganized as the Department of Commerce — provides technical assistance to local governments but no statewide ADU-specific mandate or program. Major counties (Miami-Dade, Orange, Pasco, Hillsborough, Pinellas, Broward) have published their own ADU ordinances and guidance documents.
Federal (United States) — ADU-relevant rules and programs
Federal ADU law
The United States has no federal statute that directly regulates accessory dwelling unit entitlement or design. Land-use authority over ADUs resides with states and local governments under the traditional police power. Federal engagement is limited to financing (Fannie/Freddie/FHA/VA/USDA), flood insurance (FEMA/NFIP), and discretionary housing programs (HUD), which are recorded in sibling sections of this file.
Federal financing programs
Federal housing-finance agencies and GSEs set nationwide underwriting rules that govern whether an ADU can be financed, appraised, and counted toward mortgage qualifying income. The relevant actors are Fannie Mae, Freddie Mac, FHA (HUD), VA, and USDA Rural Development.
Federal tax credits
There is no ADU-specific federal tax credit. ADUs may incidentally qualify for existing federal energy-efficiency and clean-energy tax credits when the ADU construction includes qualifying measures.
Federal housing programs
HUD administers several discretionary programs that can fund ADU-related activity at the grantee's election, but none is an ADU-specific program.
ZIP Code
- 32718
Post Office
- 109 Live Oaks Blvd, 32707