“Their quality of work and customer service is excellent.”
ADU engineering in Orange County
Find Out What Your ADU Needs—Then Get Plans You Can Submit
We move Orange County owners from an ADU idea to the right next step—a property review, structural design, or coordinated permit documents for any ADU type.
- Start with the property
- Coordinate the structure
- Support after submittal
25+
Years of experience
Leadership experience across residential and commercial buildings.
P.E.
Professional oversight
Licensed engineering judgment for the structural work included in your project.
One team
From idea to permit plans
Property review, structural design, documents, and plan-check support can stay connected.
Start here
What kind of ADU are you considering?
Choose the closest starting point so we can review the right information.
Service scope
What we review and design
The work is matched to your property and ADU type.
- Property constraints, available site information, and the proposed ADU location
- Foundations, floors, walls, roof framing, and seismic-resisting systems
- Connections to the existing home or garage when the new unit depends on them
- Structural requirements that affect the floor plan, utilities, or permit set
Project deliverables
Deliverables matched to your project
Your proposal names the exact package before work begins.
- Written findings and a recommended next step when a property review is included
- Structural calculations and Professional Engineer-signed documents when required
- Structural plans, schedules, and details prepared for the agreed permit submittal
- Plan-check responses, revised sheets, or construction clarification when included
A clear path forward
From ADU idea to usable documents
- 01Step Step 01
Review the property and goal
Share the address, available plans, photos, desired ADU type, and any agency or HOA information.
- 02Step Step 02
Confirm the right service
We identify missing information and define whether you need an initial property review, full structural design, or help with existing plans.
- 03Step Step 03
Receive the agreed package
We prepare the structural documents and address plan-check or construction questions included in your proposal.
Why NBE
Make the hard choices before construction
Early answers help you choose an ADU approach that the property, plans, and project team can support.
Compare ADU options using the property information available
Resolve openings, spans, foundations, and utility conflicts while the layout can change
Give the permit reviewer and contractor consistent structural information
Know which outside inputs—such as a survey or soils report—may still be needed
Clear Communication From First Question to Next Step
“They were very responsive, helped me salvage what I could from the previous firm, and provided the expertise and knowledge needed to finish the job quickly and efficiently.”
Frequently Asked Questions
Can you tell me whether an ADU is feasible on my property?+
Yes. A feasibility review can consider the proposed ADU type, available site information, setbacks, existing construction, access, and likely engineering needs. Zoning and utility requirements remain subject to the applicable agencies.
Do you work on garage conversions as well as new detached ADUs?+
Yes. The engineering approach is tailored to a detached ADU, attached unit, garage conversion, or an ADU above an existing or proposed garage.
Can you coordinate with my architect or designer?+
Yes. Early coordination helps align the floor plan, openings, roof geometry, foundation approach, and building systems with the structural design.
Does ADU engineering include a survey, soils report, or architectural design?+
Those are separate inputs or disciplines unless the proposal expressly includes them. The initial review identifies whether a survey, geotechnical information, architectural work, or another consultant is needed for the proposed scope.
Will I need separate utility connections?+
That depends on the ADU type, proposed systems, property conditions, and agency requirements. Utility needs should be reviewed with the relevant design professionals and service providers.
Do you help after the plans are submitted?+
Plan-check responses and structural revisions can be included in the scope. Send any existing correction notice so we can review what the agency is requesting.
See what your ADU needs next
Send the property address, available plans or photos, and the kind of ADU you are considering. We will review what you have and identify the appropriate next step.