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Ventura, Ventura County
ADUs & home additions in Ventura, CA.
Garage conversions, backyard ADUs and additions across Ventura, from the Westside and Midtown to East Ventura and the hillside neighborhoods.
Building in Ventura
Local builder, local permit counter.
Ventura homeowners are adding ADUs and additions to every kind of house, from older homes on raised foundations to hillside homes. One recent Ventura addition added a dining room, bedroom and bathroom to an older home, topped by a roof deck with an outdoor fireplace.
Ventura has a wide mix of housing, from older homes on raised foundations to postwar ranch houses with attached garages and newer tracts in the east end. That mix matters. Matching a raised foundation, original windows and interior details like coved ceilings takes different planning than converting a slab-on-grade garage.
The City of Ventura has embraced ADUs. It offers free, pre-approved detached ADU plans that can shorten review, and its Planning Division will confirm whether your lot is in the Coastal Zone, which affects approvals on many Westside, downtown and beach-area properties. A consultation helps you decide whether a city plan, a custom design or a garage conversion fits your lot and budget best.
What to know in Ventura
- The city offers free pre-approved detached ADU plans in three sizes (700 sq ft one-bedroom, 900 sq ft two-bedroom and 1,188 sq ft three-bedroom), reviewed by Building and Safety with reduced fees and shorter review times.
- ADUs in Ventura's Coastal Zone may also need an Administrative Coastal Development Permit; the city asks owners to confirm coastal status with the Planning Division.
- Ventura's local ADU standards were adopted in Ordinance No. 2023-09 (October 2023). Where any local rule conflicts with newer state law, such as the 2026 JADU owner-occupancy change, state law controls.
- Pre-approved plans still need a site plan, utility connections and engineering for your specific lot, which the contractor prepares and coordinates.
Project types in Ventura
ADUs and additions in Ventura.
ADUs
Accessory dwelling units of every type, from feasibility and permits through final inspection.
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Garage-to-ADU Conversions
Reuse an existing garage for the fastest, most economical path to a complete ADU.
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Detached ADUs
Freestanding backyard homes with full foundations, framing, utilities and finishes.
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Attached ADUs
Units that share a wall with the main house, including attached-garage conversions.
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Junior ADUs (JADUs)
Up to 500 square feet created within your existing home, with an efficiency kitchen.
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Room additions, kitchen expansions and roof decks built to blend with your home.
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Second-Story Additions
Build up instead of out, with structural evaluation, engineering and framing done right.
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Primary Suite Additions
Master bedroom and bathroom additions with closets, showers and soaking tubs.
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Ventura ADU & addition questions
Does the City of Ventura have pre-approved ADU plans?
Yes. The city offers free standardized detached ADU plans in 700, 900 and 1,188 square-foot versions, with reduced review fees and shorter review times. Site-specific drawings are still required.
Do I need a coastal permit for an ADU in Ventura?
If your property is in the Coastal Zone, an Administrative Coastal Development Permit may be required in addition to the building permit. The Planning Division can confirm your lot's status, and it should be built into the schedule.
Can I convert my garage to an ADU in Ventura?
Yes. Garage-to-ADU conversions are allowed under state law, and replacement parking cannot be required. Coastal Zone lots may also need an Administrative Coastal Development Permit.
Nearby areas
Also serving areas near Ventura.
Free consultation
Planning an ADU or addition in Ventura?
Share a few details about your property and the space you want to add. We will pass your request to a licensed local general contractor who specializes in ADUs and additions, and they will follow up directly.
- Free consultation and site visit
- A realistic budget conversation before you pay for plans
- A licensed general contractor from permit to final