WHAT TO KNOW FIRST
The Great Park area continues to include multiple planned neighborhoods and housing forms. Community name, construction age, and nearby development do not replace a parcel-specific review.
- Available builder plans, option sheets, and records that match the actual address.
- Deed and association information for private yards, walls, drives, and exterior changes.
- Photos of panels, meters, cleanouts, drains, equipment, gates, and neighboring windows.
Verify the individual home instead of generalizing from newer construction.
Great Park neighborhoods include multiple home forms, lot relationships, and ownership arrangements. Newer construction does not by itself prove spare electrical capacity, a convenient sewer path, private control of an exterior area, or simple access. Collect the home’s plans if available, title and association documents, current site photos, and locations of panels, meters, equipment, cleanouts, drains, walls, gates, and neighboring openings. This property file lets the team check actual conditions rather than carrying model-home assumptions into scope and pricing.
Confirm the individual lot, recorded conditions, existing outdoor improvements, fire access, drainage, and privacy relationships.
Trace the job from delivery through cleanup.
At the Great Park property, trace deliveries, trenching, worker access, temporary protection, and restoration through the areas the household uses every day.
Access through the finished yard
Plan staging and delivery around compact yards, finished drives, community streets, and continued household use.
Connections between the home and unit
Verify available capacity, routes, and provider responsibilities even on a recently built home.
Ownership questions to settle
Use the property’s current governing documents and public sources. Rules or approvals elsewhere in the Great Park area may not apply.
Compare changes to the existing home with a separate backyard building.
An attached ADU may align with the existing home and preserve another part of a compact yard, while touching structural, roof, weatherproofing, and service systems. A detached ADU can provide separation but adds its own shell, foundation, routes, and outdoor circulation. A JADU or garage conversion changes existing household space instead. Compare options using the property documents, affected rooms, entrance privacy, private-area boundaries, utility verification, fire-access questions, construction staging, and final landscape repair. Recent building age is context, not a substitute for this work.
Test each ADU type against daily life in Great Park.
For the Great Park project, compare privacy, storage, parking, outdoor use, and disruption along with the rooms shown on the plan. A workable Great Park choice has to function during construction and after move-in.
For a Great Park home, a detached backyard ADU adds a separate foundation, shell, and utility connections. An attached ADU at the Great Park address adds work where the new unit meets the home.
A garage conversion and a JADU both reuse existing space, but they involve different building conditions, household tradeoffs, and project rules.
Build a Great Park home-specific file.
- Available builder plans, option sheets, and records that match the actual address.
- Deed and association information for private yards, walls, drives, and exterior changes.
- Photos of panels, meters, cleanouts, drains, equipment, gates, and neighboring windows.
- Household priorities for yard use, parking, storage, entry separation, and construction access.
PRIMARY SOURCES
Official guidance for the project file
Links checked September 7, 2026.
- City of Irvine — Planning Areas ↗
- City of Irvine — ADU project page ↗
- California HCD — Accessory Dwelling Units ↗
Ask the responsible team member to confirm the rule used in the permit set.
RELATED IRVINE GUIDES
Read the page that answers the remaining question.
QUESTIONS ABOUT YOUR ADU?
Talk through the construction questions.
Bring the questions raised on this page to the call. We can sort out which ones need records or a site visit.