Miramar, FL Accessory Structures: ADU Rules (2026)
ADU rules in Miramar, FL, also called accessory dwelling unit regulations or granny flat ordinances, cover setbacks, owner-occupancy, parking, and permit requirements.
Key Facts
- ADUs allowed per lot
- one maximum
- Size cap
- 1,200 sq ft, min 300 sq ft
- Floor-area ratio limit
- 50% of primary home
- Height limit
- two stories, never taller than house
- Detached rear setback
- 10 ft (1-story), 15 ft (2-story)
- Parking required
- 1 or 2 spaces by sleeping areas
Summary
Miramar allows one accessory dwelling unit per lot as an accessory to a single-family detached home, capping it at 1,200 square feet, requiring it stay under 50% of the primary home's floor area and under two stories, per Land Development Code § 405.1.
An Accessory Dwelling Unit (ADUs) is an ancillary or secondary living unit, that has a separate kitchen, bathroom(s), and sleeping area(s), existing either within the same structure, or on the same lot, as the primary dwelling unit. ADUs are allowed as an accessory use to a single-family detached dwelling, as per TABLE 402-1, Principal Use Table for Single-family and Multi-family zoning Districts. (a) Number. No lot shall contain more than one accessory dwelling unit. (b) Location. Any proposed detached ADU must be located to the side or rear of the primary dwelling, to the best extent physically possible. (c) Square Footage. An ADU must not exceed 50% of the total square footage of the primary dwelling unit including unairconditioned areas, but in no case be greater than 1,200 square feet and in no case shall be less than 300 square feet in area. (e) Height. The maximum height of an ADU shall be two (2) stories. In no event, shall the height of the ADU exceed that of the primary dwelling.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 104 | Land Development Code: Supplement 46).
Full Breakdown
1 of Miramar's Land Development Code defines an Accessory Dwelling Unit (ADU) as an ancillary or secondary living unit with its own kitchen, bathroom and sleeping area, either within the primary structure or elsewhere on the same lot. 6. Those standards are specific: subsection (a) caps a lot at one ADU, no more; subsection (b) requires a detached ADU sit to the side or rear of the primary home wherever physically possible; subsection (c) limits the ADU to 50% of the primary dwelling's total floor area (counting unairconditioned space), with an absolute ceiling of 1,200 square feet and an absolute floor of 300 square feet; subsection (d) ties plot coverage to the underlying zoning district's requirement; and subsection (e) caps height at two stories and bars the ADU from ever exceeding the primary home's height.
Subsection (f) requires the ADU be architecturally compatible with the main house, subsection (g) sets parking at one space for an ADU with two or fewer sleeping areas and two spaces for larger units, and subsection (h) sets detached-ADU rear setbacks at 10 feet for a one-story structure and 15 feet for a two-story structure, with side setbacks matching the primary dwelling. Every ADU proposal goes through site plan and/or conditional use review under § 405's opening paragraph before the city will issue a permit.
Violations & Fines
An ADU built over the 1,200-square-foot cap, taller than two stories, exceeding the primary home's height, or exceeding the 50%-of-floor-area ratio is a Land Development Code violation subject to code enforcement, which can require modification or removal of the noncompliant structure and, per § 405.1.6(k), bars the unit from creating or expanding any nonconformity on the lot.
Frequently Asked Questions
How big can an ADU be in Miramar?
Can I build more than one ADU on my Miramar lot?
How tall can a Miramar ADU be?
What setback applies to a detached ADU in Miramar?
Sources & Official References
Other rules in Miramar
How Miramar compares: Easiest Cities to Build an ADU·Florida rules heatmap·Compare Miramar to another location·View the Florida accessory structures overview
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