Fortune ADU: End-to-End ADU Services in Southern California
Fortune ADU is a Southern California-based contractor offering accessory dwelling unit services that cover the full project lifecycle — from initial design and feasibility through permitting and construction. Their approach centers on transparent pricing, realistic timelines, and a permit-first process intended to reduce costly surprises down the line. Services start at $3,999.99.
As an ADU builder operating across SoCal, Fortune ADU works with homeowners navigating a range of local complexities, including coastal overlays, fire severity zones, slope constraints, and HOA regulations. By identifying these constraints early in the process, they aim to avoid situations where work is completed only to fail plan check.
Fortune ADU offers a single-contract model, meaning one accountable team handles design, permitting, and construction. Most projects are completed within 6 to 12 months, though city review times and site-specific challenges can extend that timeline.
ADU Types and Services Offered
Fortune ADU works across several ADU categories, helping homeowners determine which type best fits their lot, budget, and goals — whether that's generating rental income, housing family members, or increasing resale value. Their services include:
- Detached ADU (Backyard ADU): A standalone unit built in the backyard, offering privacy and design flexibility. Typical sizes run up to 1,200 sq. ft., with costs generally ranging from $200 to $300 per sq. ft.
- Attached ADU: An addition to the existing home sharing at least one wall but functioning as a separate unit. Also up to 1,200 sq. ft. or 50% of the main home's size, at a similar cost range.
- Junior ADU (JADU): A smaller unit up to 500 sq. ft., typically created by converting part of an existing home such as a spare room or attached garage. Cost ranges from approximately $100 to $200 per sq. ft.
- Garage Conversion ADU: Converts an existing garage into a livable unit. A standard two-car garage conversion typically falls between $120,000 and $180,000 total — often considered one of the more cost-effective ADU options.
- Multi-Family ADU: For owners of multi-family properties, multiple ADUs may be added. Detached units can reach up to 1,200 sq. ft., with costs ranging from $200 to $350 per sq. ft.
In addition to these ADU types, Fortune ADU also handles new home construction and additions, rounding out their offering as a general ADU contractor and builder.
Their full service list includes:
- ADU Design & Plans
- ADU Consultation & Feasibility Studies
- Garage & Basement Conversions
- New Home Construction & Additions
- Permit, Plan Check & City Liaison Services
Permitting and Compliance in California
A notable part of Fortune ADU's work is their focus on the permitting process. As a permit-first ADU contractor, they conduct site assessments and code compliance reviews before design work progresses too far. Their team prepares and submits all required documentation and acts as a liaison with city planning departments throughout the review process.
This is particularly relevant in Southern California, where local regulations vary significantly between jurisdictions. Fortune ADU's familiarity with California ADU laws — including rules around detached ADU builders, JADU contractors, and garage conversion contractors — is central to how they position their services.
For homeowners who are unsure which ADU type suits their property, Fortune ADU offers a free, no-pressure consultation to review site conditions, zoning, and budget before any commitment is made. Their portfolio includes completed projects across Southern California, with documentation of the permit challenges encountered and resolved on each.
Fortune ADU also provides resources such as local guides, permit checklists, and case studies to help homeowners approach the planning process with a clearer understanding of what to expect.
