Medium-density district for small-lot single-family homes, townhomes and cottages. Apartments and duplexes are not permitted uses in RMD-A.
What's allowed in RMD-A
| Use | Status | What that means |
|---|---|---|
| Single-family home | Allowed | listed as a permitted use |
| Duplex / two-family | Not allowed | not allowed (excluded by the use list or by definition) |
| Townhouse | Allowed | listed as a permitted use |
| Multi-family (3+ units) | Not allowed | not allowed (excluded by the use list or by definition) |
| Accessory dwelling unit (ADU) | Accessory only | allowed only as an accessory use under conditions (e.g. COJ ADU rule §656.403(g)) |
Lot and building standards
| Standard | Value | Code section |
|---|---|---|
| Minimum lot area (first units) | 4,000 sq ft | §656.306.A.II(d)(1)(ii) |
| Units covered by that minimum | 1 | |
| Lot area per additional unit | — | |
| Maximum density | — | |
| Minimum lot width | 40 ft | §656.306.A.II(d)(1)(i) |
| Maximum height | 35 ft | §656.306.A.II(h)(1) |
| Maximum lot coverage | 50% | §656.306.A.II(e)(2) |
How many units can a lot hold in RMD-A?
Applying the district's lot-area and density rules (the stricter one wins) to typical lot sizes:
| Lot size | Max units | Rule that limits it |
|---|---|---|
| 5,000 sq ft | 1 | 4,000 sqft minimum lot for 1 unit(s) |
| 7,500 sq ft | 1 | 4,000 sqft minimum lot for 1 unit(s) |
| 10,000 sq ft | 1 | 4,000 sqft minimum lot for 1 unit(s) |
| 15,000 sq ft | 1 | 4,000 sqft minimum lot for 1 unit(s) |
| 21,780 sq ft (½ acre) | 1 | 4,000 sqft minimum lot for 1 unit(s) |
Multi-unit numbers only matter where duplexes or multi-family are allowed above. In Jacksonville the Future Land Use Map category can cap density further, and overlays (Riverside/Avondale, San Marco, Springfield and others) can change the numbers.
Notes from the code
Permitted uses in RMD-A through RMD-D (§656.306.A.II(a)): single-family; multiple-family (RMD-B/C/D only); townhomes subject to §656.414; housing for the elderly; cottages. 'Multiple-family dwelling' means a building containing more than one dwelling unit, or a cottage (§656.1601), so a duplex counts as multi-family. Single-family lots: 40 ft and 4,000 sq ft (§656.306.A.II(d)(1)). Cottages: 25 ft and 1,500 sq ft, 70% coverage (§656.306.A.II(d)(2), (e)(1)). All other uses: 60 ft wide (§656.306.A.II(d)(3)(i)), 50% coverage (§656.306.A.II(e)(2)). Height (§656.306.A.II(h)): single-family 35 ft; all other uses 45 ft, unlimited if all yards grow 1 ft per 1 ft above 45. An administrative deviation may not modify lot requirements to raise multi-family density (§656.1601, 'Administrative deviation'). RMD-A has no multi-family lot-area formula: §656.306.A.II(d)(3)(ii) gives formulas only for RMD-B, C and D. Conversion of a single-family house to a duplex or triplex is therefore NOT available by right; it needs a rezoning (e.g. to RMD-B+ or PUD). Townhomes are allowed, but §656.414(a) makes them meet the multi-family lot and density rules, and RMD-A has none, so townhome density is set by the FLUM category. Values below are the single-family figures. FLUM density: MDR 20 du/ac (30 in the UPA/UA if not abutting LDR/RR); RMD-A can also sit in LDR (§656.305.B). See _meta.jacksonville_flue_density. ADU allowed as an accessory use to a conforming single-family dwelling under §656.403(g): behind the primary structure, footprint <= lesser of 25% of principal GFA or 750 sq ft, not in a required yard, and the property must hold (or have applied for) a homestead exemption. That last condition rules out ADUs on non-homestead investor-owned parcels.
Compiled from the official code text (§656.306). Zoning changes by ordinance and parcels can be rezoned — confirm on the official zoning map and with Jacksonville planning staff before you rely on it. Not legal advice.