🔍 1. What the codes actually say
Planning Code (Parking Quantity)
- SF Planning limits off-street parking in most residential districts to a maximum number of spaces per dwelling (commonly one or two, depending on zoning).
- The Code defines a parking space by its ability to store a standard vehicle, not by the technology used to maneuver it.
- Turntables, mechanical lifts, or stackers are not mentioned in the Planning Code as distinct or restricted devices.
➡ Meaning: You may use a turntable to make circulation easier, but it doesn’t create an extra legal parking space. A vehicle sitting on the turntable counts as one of the two allowed spaces.
Building Code (Garage Construction)
- CBC §406 and related fire-separation provisions regulate garage construction, fire ratings, and ventilation—not parking counts or devices.
- The CBC does not prohibit a vehicle from being parked over a turntable.
- It only requires that the turntable’s installation comply with mechanical/electrical codes and not obstruct egress or fire department access.
➡ Meaning: A car may safely be parked on a turntable if the device is listed, rated for load, and installed per manufacturer instructions.
🚫 2. Why the reviewer flagged it
Plan reviewers often interpret a car on the turntable + two cars on the floor as three functional spaces, exceeding the two-car limit. Even though the code is silent on turntables, the Planning Department enforces intent:
- The number of usable spaces matters, not the number of slabs or devices.
- If a car can physically remain on the turntable and two others fit elsewhere, it’s considered a three-car garage by function.
✅ 3. How to comply
| Step | What to Show or Do | Why |
|---|---|---|
| 1. State the two-car limit on the drawings. | Clarifies compliance intent for Planning reviewers. | |
| 2. Label the turntable position as “maneuvering aid / parking space #2.” | Shows it’s one of the two legal spaces, not an extra. | |
| 3. Dimension the garage to demonstrate that only two vehicles can fit without encroaching into required clearances. | Prevents interpretation of “three usable spaces.” | |
| 4. Provide manufacturer specs for load, fire safety, and listing. | Confirms CBC compliance. | |
| 5. Coordinate with the Planner: submit a short memo noting that the turntable is part of the two-space count and not an additional stall. | Establishes record clarity for entitlement and inspection. |
⚙️ 4. Summary
- No SF or CBC provision forbids parking on a turntable.
- Each vehicle parked—turntable or not—counts toward the total permitted spaces.
- If a turntable allows a third car, the City may deem the garage over-parked.
- The safest path: use the turntable for one of the two allowed cars and document that intent clearly in your plans.
References
- San Francisco Planning Code: Articles 1.5 & 2, Parking Controls (e.g., §151 et seq., district tables for maximum off-street spaces).
- California Building Code §406, §510 (garage/fire-resistance, mixed-occupancy).
- 2025 CBC/2025 S.F. Amendments — no language restricting vehicles on mechanical turntables.
Bottom line: 🟢 You may park a car on a turntable in a private R-3 garage—just make sure it’s counted as one of your two spaces, not an extra third, and that the device meets mechanical, electrical, and fire-clearance standards.