With that said, here's what you should bring to talk to the counter person at Planning:
The address of the property, the assessor parcel number or map. They will give you the current zoning information including allowed uses and those that require a conditional use permit. If none of these uses are inadequate for what you plan to do, then you should ask to rezone the property.
To rezone a property usually requires you to put together a proposal stating why you want to do this, and a site plan of the property showing the proposed new building. You do not have to have a complete design at this stage, but you should still consider hiring an architect to take you through the process. You will have to fill out an application, pay a fee, notify neighbors (usually up to 300 feet from the property) and you will likely have to have a public hearing. This process can take several months.
Once the new use is approved you can then go through the process to get your new condo complex. This type of property will require the services of an architect to design, produce construction documents and acquire approvals at the minimum.
- Parking concerns as the units increase
- Property line concerns for setback and fire escape
- Lot size
- Population ingress egress
It could be tricky sometimes talking the Oakland Planning. You might want to find a good surveyor to help you set the stage for your case. I have had experience where there was a 4 units building on the lot but the city down-zoned it to a SFR for the lot so the rebuild is only a SFR which dramatically hurts its resell value and refinance amount.