WHAT TO KNOW FIRST
Northwood contains established residential streets as well as later planned tracts. Home age, prior alterations, yard improvements, and parcel layout can create very different ADU scopes.
- Available permits or plans for additions, garage changes, patio covers, or remodels.
- Photos of panels, meters, cleanouts, exterior equipment, and likely service paths.
- A yard sketch marking mature trees, irrigation, paving, pools, walls, and gates.
Reconcile the current home with its available records.
A Northwood property may have decades of additions, patio work, landscape changes, or garage modifications that are not obvious from a real-estate floor plan. Gather a simple record set: current assessor information, available permit history, a field sketch, and photographs of every side of the house. Note where the records and visible conditions appear different without assuming why. That comparison gives the designer and contractor a responsible list of items to investigate before an ADU is tied to the structure or placed around existing improvements.
Document the main home, garage, additions, patio covers, pools, walls, trees, and easements before selecting a project type.
Map the path that the estimate must cover.
At the Northwood property, photograph additions, patio work, garage changes, panels, plumbing, roofs, drainage, and mature landscaping. Write down Northwood differences without guessing why they exist.
The sequence of site deliveries
An established yard may require a protection and restoration plan for paving, planting, irrigation, fencing, and occupied-home access.
Electrical equipment and clearances
Older and modified homes deserve a records-and-field review before electrical or plumbing capacity is assumed.
Community documents tied to the address
Confirm the property’s own title and association conditions; nearby homes can be governed differently.
Compare reuse of the existing shell with a new backyard footprint.
A garage conversion can look direct because the walls already exist, but the proposal still needs to address slab and wall conditions, openings, water management, utilities, fire separation, comfort, and the functions displaced from the garage. A detached unit creates new foundation and envelope work while offering a different relationship to the main house. For an established Northwood yard, include tree protection, irrigation changes, hardscape removal, occupied-home circulation, and final restoration in both comparisons. The useful choice is the one with the clearest complete scope.
Decide what can stay before pricing what is new in Northwood.
For the Northwood project, a garage conversion or attached unit depends on the condition of the existing shell. A separate Northwood backyard building shifts more work to access, foundation, utilities, and yard repair.
For a Northwood home, a detached backyard ADU adds a separate foundation, shell, and utility connections. An attached ADU at the Northwood address adds work where the new unit meets the home.
A converted garage may change parking and storage while adding structural and utility work. A JADU raises different questions about the rooms and facilities inside the house.
Prepare a Northwood existing-condition packet.
- Available permits or plans for additions, garage changes, patio covers, or remodels.
- Photos of panels, meters, cleanouts, exterior equipment, and likely service paths.
- A yard sketch marking mature trees, irrigation, paving, pools, walls, and gates.
- A list of household access and parking functions that construction must preserve.
PRIMARY SOURCES
City and state links for the team
Links checked September 7, 2026.
- City of Irvine — Planning Areas ↗
- City of Irvine — ADU project page ↗
- California HCD — Accessory Dwelling Units ↗
Recheck these links before a drawing or estimate relies on the summary.
KEEP READING
Carry these notes into the contractor discussion.
READY FOR A SITE CONVERSATION?
Tell us what remains uncertain at the site.
A rough sketch of the lot can be as useful as a written description. Call when you can explain the idea clearly.