Oildale is unincorporated Kern County. As of October 2026, ADU building permits there come from Kern County Public Works, applied for in person or through the county's Accela portal, and zoning and setback questions go to Kern County Planning and Natural Resources.
Can I use a county pre-approved ADU plan in Oildale?
Often. As of October 2026, Kern County Public Works posts pre-approved ADU plans, including individual plans and a prefab program with floor plans from 288 to 1,196 sq ft. The county's instructions say properties in a flood zone are not eligible to use pre-approved plans, so we check flood mapping first.
What does the county ask for with a permit?
- A letter and site plan from the plan's architect, engineer or designer.
- Will-serve letters for water and sewer from your providers.
- Environmental Health review if the property is on septic.
- A check of the home's age with the Assessor, which can affect fire sprinkler requirements under the county's guidance.
What fees should I expect?
As of October 2026, the county lists approximate fees of about $1.00 per sq ft for building, about $700 for planning plus $52 for an address, and about $4.00 per sq ft for schools. Traffic and park fees apply only to ADUs over 750 sq ft, and the county notes park fees may apply within the North of the River area. Sewer fees vary by location.
What does an Oildale ADU depend on?
- Flood zone status and easements on the parcel.
- Sewer availability or septic capacity.
- Unit size, especially above or below 750 sq ft for fees.
- Whether a pre-approved plan fits the yard and setbacks.
For rents nearby, read Bakersfield ADU rent.