Challenge
The property needed a second structure that added flexibility without forcing the wrong detached build path.
Case Study
Backyard ADU
An ADU case study built around flexible property use, front-end feasibility, and a cleaner comparison between detached construction and other expansion options.
Accessory Dwelling UnitCosta Mesa
Comparable planning guidance
Comparable range
$150,000 to $375,000+ for comparable Orange County ADU scopes
Comparable timeline
Comparable ADU projects often run 10 to 18 months from planning through final signoff
These planning figures reflect comparable Orange County scopes, not a published contract value for this specific project.
Solution
Stone Development used feasibility-first planning to align site use, utilities, and the homeowner’s long-term goals before construction accelerated.
Outcome
The finished ADU reads like a strategic property improvement instead of a generic second building.
Why It Matters
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Project highlights
- Use-case-first ADU planning
- Strong reference for Costa Mesa and wider Orange County owners
- Detached-unit strategy grounded in site and utility logic
Related Service
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