Medium-density single-family district that also allows two-unit townhouses on 6,000 sq ft (3,000 sq ft per unit lot).
What's allowed in JRS-3
| 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) | Not listed | not expressly listed; may or may not fall under a broader listed use; verify with planning staff |
Lot and building standards
| Standard | Value | Code section |
|---|---|---|
| Minimum lot area (first units) | 6,000 sq ft | |
| Units covered by that minimum | 2 | |
| Lot area per additional unit | — | |
| Maximum density | — | |
| Minimum lot width | 25 ft | |
| Maximum height | 35 ft | |
| Maximum lot coverage | 35% |
How many units can a lot hold in JRS-3?
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 | lot 5,000 sqft is under the 6,000 sqft minimum (nonconforming) |
| 7,500 sq ft | 2 | 6,000 sqft minimum lot for 2 unit(s) |
| 10,000 sq ft | 2 | 6,000 sqft minimum lot for 2 unit(s) |
| 15,000 sq ft | 2 | 6,000 sqft minimum lot for 2 unit(s) |
| 21,780 sq ft (½ acre) | 2 | 6,000 sqft minimum lot for 2 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
Single-family (§34-613(e)(1)): 5,000 sq ft, 50 ft, 35% coverage, 35 ft. Townhouse, two units maximum (§34-613(e)(2)): 6,000 sq ft total (individual lots at least 3,000 sq ft), 25 ft per unit, 35% coverage, 50% impervious, 35 ft. The values below are the townhouse (two-unit) figures. 'Multi-family' (2+ units in one structure, §34-300) is not listed. Citywide 35-ft height cap: Jacksonville Beach Charter §52(2)(a) ('no new building height shall exceed thirty-five (35) feet').
Compiled from the official code text (JB LDC §34-613). Zoning changes by ordinance and parcels can be rezoned — confirm on the official zoning map and with Jacksonville Beach planning staff before you rely on it. Not legal advice.