Your ADU Contractor in Oxnard

Ask whether the builder knows which side of Victoria Avenue your lot sits on and what that does to the permit, and whether they have run a pre-approved plan through the city's 30-day track. Oxnard's desk screens every package for completeness before plan check starts, and a builder who does not know the city's file-naming rules loses weeks at the counter. Sandy soil is the second filter: a slab poured on uncompacted sand settles. Master Construction is an ADU contractor in Oxnard that designs, permits and builds under Lic. #1027281, family owned in Ventura since 1994, with electrical, plumbing and concrete crews of our own.

Type and size set the base: a garage conversion reuses a slab, walls and roof, while a detached unit buys all three new. Utility runs move the number next, since a new sewer lateral, a water line upgrade and a 200-amp SCE panel each show up regularly on the sandy-soil tracts. Pre-approved county plans trim design time but not the city's plan check fee. Impact fees start above 750 square feet. Finishes, and whether a lot near the harbor needs a geotechnical report, close the list. We walk the lot, confirm setbacks with Planning, and hand you a written fixed-price scope before you commit to anything.

Design and engineering run first, then the city's clocks: 15 business days for a completeness determination, 60 days to approve or deny a complete application, or 30 days total for a detached unit on a Ventura County or San Diego County pre-approved plan. Counter hours are Monday through Thursday mornings, which stretches any resubmittal. Construction follows. A garage conversion is the shortest build; a detached unit with a new foundation and utility runs is the longest. Plan on months, not weeks, and expect SCE service work and the utility connections to set the pace more than framing does. The schedule is written into the contract.

Not its own. The City of Oxnard accepts pre-approved ADU plans from two outside programs under AB 1332: the Ventura County pre-approved plans and the San Diego County pre-approved plans. Using one shortens the city's review to 30 days total for a detached unit, but plan check fees are not reduced, and the project still needs its own site plan, energy calculations and, in most cases, structural calculations. The unit must meet Oxnard's design standards unless state law exempts it. Submittals go to buildingpermits@oxnard.org with Pre-Approved ADU in the subject line. We adapt the county plan to your lot and carry it through inspection.

Yes on the single-family tracts east of Victoria Avenue, with no replacement parking required. Inside the coastal zone, confirm with Planning first; the city's beach zoning did not list ADUs as of 2026. The conversion keeps its existing setbacks and can add 150 square feet for an entry. On the tracts the work happens inside the box: header the old door opening, insulate the walls, bring the slab to living-space standards, and run plumbing and a subpanel from the house. A junior ADU up to 500 square feet is the other option for an attached garage; owner occupancy applies only if it shares a bathroom.

Our read as of 2026 is no, not under the city's current coastal zoning, and Planning has the final word. Oxnard's coastal zone runs west of Victoria Avenue to the ocean, its beach sub-zone lists no ADU as a permitted use, and JADUs wait on the Local Coastal Program update now in progress, which is expected to add ADU and JADU standards. Confirm current status with Planning before you design anything. Hollywood Beach, Hollywood by the Sea and Silver Strand are unincorporated Ventura County despite their Oxnard addresses, permitted through the county under its own coastal ADU rules, now being updated. We check the jurisdiction before the first sketch.

Yes, for terms longer than 30 days. Oxnard's ordinance bars short-term rental of any ADU or JADU, even in beach neighborhoods where the main house can hold an STR license. Every residential rental in the city must be registered annually on the rental registry, and the permit application already collects the unit's estimated monthly rent. The city's 4% rent cap covers multifamily built before February 1995, so a new ADU falls outside the cap as we read the coverage rules, though registration is still required and just-cause rules may apply. A JADU that shares a bathroom with the house requires the owner to live in one of the two units.

No. State law voids any CC&R provision that prohibits or unreasonably restricts an ADU or JADU on a single-family-zoned lot, and the city's ADU page says so in plain terms while adding that the city will not step into HOA disputes. Associations in RiverPark, Seabridge, Wagon Wheel and the harbor communities can still run architectural review on materials, color and roof form, and the city's own design standards already call for a sloped roof where the house has one and non-reflective siding. We package the association submittal alongside the city package so both reviews run at the same time.

Yes, under one contract. We measure the lot, confirm setbacks and square footage with Oxnard Planning, draw the unit or adapt a county pre-approved plan, engineer the foundation for sandy soil, and build the digital submittal to the city's file-naming guidelines. After permit issuance our own crews handle concrete, framing, electrical, plumbing, roofing, stucco and drywall through final inspection. Utility connections with SCE and the city's water and wastewater divisions are scheduled by us, not left to you. You get one schedule and one fixed number, and the people who drew the unit are the ones standing there when it passes inspection.