What Is ADU Construction?
ADU construction involves planning, permitting, and building a self-contained living space on a residential property , adding value, flexibility, and income potential without buying new land.
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Structural Engineering
Support the design with a clear structural plan.
Understand how the proposed building or alteration will be supported. Uni Construction lists structural engineering services and can discuss the responsible professional, required investigation, calculations, drawings, and coordination for your project.
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Structural Engineering for your property
Structural Engineering for your property
Structural work considers how loads move through the building and into the supporting ground. New openings, altered walls, additions, and conversions can change that path. A layout decision should therefore be coordinated with the structural professional before it is treated as a straightforward field alteration.
20 years of ADU expertise
The structural scope depends on the proposed work and reliable information about the existing building and site. Identify the responsible California-licensed professional and the exact services included. Calculations, drawings, site observations, special inspections, and construction clarifications are distinct tasks and should be defined in the agreement.
Structural Engineering for your property
Provide architectural drawings, available structural records, and the intended work. Identify new openings, additions, changes in use, and retained construction affected by the proposal. The engineer determines what further information is needed for their analysis.
Trust the process, love your ADU
Review available records and observable conditions within the agreed scope. Concealed framing, foundations, or connections may require investigation. Do not assume an old plan proves that the building was constructed exactly as drawn or remains unchanged.
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Need an ADU? We handle everything.
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Feasibility
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Design & Plan
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Permit
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Build
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The responsible professional develops the required analysis, structural plans, and details for the scope. Coordinate foundations, framing, connections, and openings with the architecture and other disciplines. Keep revisions aligned so the documents describe one intended structure.
4 BR | 2 BA
- 1192 SF
- 4 Bed
- 2 Bath
2 BR | 2 BA
- 749 SF
- 2 Bed
- 2 Bath
2 BR | 2 BA
- 800 SF
- 2 Bed
- 2 Bath
2 BR | 1 BA
- 650 SF
- 2 Bed
- 1 Bath
1 BR | 1 BA
- 400 SF
- 1 Bed
- 1 Bath
we handle everything
End-to-end ADU project management
As experienced ADU builders, we make the process easy, handling everything from design to construction with clarity and precision. Our team manages each step to deliver high-quality results and complete peace of mind, so you can simply enjoy your new space.
Before we start building your Accessory Dwelling Unit, we do a detailed feasibility study, evaluating zoning regulations, building codes, and potential red tape to show exactly what’s possible for your property. Whether you envision multigenerational living or a backyard cottage, we align design with legal requirements and your lifestyle goals. Our streamlined process establishes a realistic budget, passive income potential, sets clear expectations, and provides full transparency and confidence for your long-term investment from day one.
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Coordinate structural plan-check comments with the responsible engineer. Define any included construction observations or clarification services. When actual conditions differ from assumptions, obtain professional direction before changing structural work or concealing affected construction.
Forget the complexities of permits and building codes, we handle it all. Our experienced team manages every detail of permit submissions, building department approvals, code compliance, and inspections, ensuring a smooth and swift process that keeps your accessory dwelling unit project on track without delays.
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Your dedicated Project Manager oversees the entire construction process of your ADU. They handle everything from utility integration to final touches. They ensure the project progresses on time, maintains quality, and communicates clearly at every step. Our general contractors deliver high-quality workmanship, bringing your vision to life seamlessly and without surprises.
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Share the proposed work, current plans, records, and known conditions. Identify the responsible professional and agreed services. Establish which site information and architectural decisions are required before analysis can proceed.
The structural professional identifies investigation or reports needed for the design. Coordinate access and documentation. Keep assumptions visible so the design does not rely silently on concealed conditions that have not been verified.
Maximize your accessory dwelling unit investment by boosting your property value and earning extra income with our comprehensive rental support services. From market analysis and tenant attraction to compliance guidance, we'll help you confidently navigate renting your ADU, ensuring optimal returns, extra income, and minimal stress.
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Develop the structural package alongside the current architecture. Review interfaces with openings, equipment, foundations, and utilities. Communicate design changes promptly so dimensions and details remain consistent across the set.
ADU design & construction in Los Angeles
Serving homeowners across Los Angeles and surrounding cities, with offices in Diamond Bar, Los Angeles, and Pomona.
Exploring ADU Options
Where should I start with my ADU?
Thinking about an ADU
Not sure if an ADU is right for you? Curious about costs of building, zoning details, or whether you need a feasibility study? We can walk you through the basics and give you a clear picture of your options and the basics of ADUs.Start here to learn the basics
I’m weighing my options
Done some research but still comparing paths? Should you hire separate designers and ADU builders, general contractors, or one trusted design-build partner? Learn why the design-build approach cuts through red tape, saves time, and delivers better value.The design-build difference
I’m ready to build my ADU
If you’re ready to move forward, we’ll make the process seamless. Our team will review your property, handle permits, and create a tailored plan to design and build your ADU, so you can focus on enjoying your new space.Get my custom ADU proposal
ADU Regulations
The easy way to build an ADU is here
Coordinate authority comments or construction clarifications as included. Additional observations, revised designs, or discovered conditions may require additional services. Keep issued documents and written professional responses available to the construction team.
Smaller ADU setbacks
Allowing you to do more with your property.
Reduced ADU costs
Carrying out cost-effective construction without compromise.
Expedited ADU approvals
Speeding up the permit approval timeline for ADUs.
ADU parking requirements
Alleviating the parking space requirement for ADUs.
Additional ADUs
Supporting both ADUs and Junior ADUs on a single property.
Bigger ADU builds
Greater build sizes Making even larger ADUs possible.ADU INSIGHTS
ADU contractors you can count on
Structural Engineering for your property
ADU construction involves planning, permitting, and building a self-contained living space on a residential property , adding value, flexibility, and income potential without buying new land. In California, ADUs now make up about one in six new homes, reflecting their growing role in solving the state’s housing shortage.
Structural Engineering for your property
A wall’s appearance does not establish whether it carries load or contributes to lateral resistance. Provide the proposed change and available building information to the structural professional before assuming a wall can be removed.
Structural Engineering for your property
Residential use and proposed openings can change structural considerations. Existing floor and foundation conditions need appropriate review. Retaining a garage shell does not automatically establish that it is suitable for the new design.
Structural Engineering for your property
New and existing construction need a considered structural relationship. Foundations, roof changes, openings, and load paths should be coordinated. The extent of investigation depends on the building and the alteration, not only the size of the new room.
Calculate your
ADU ROI
Our calculator offers a clear look at what your return on investment will be for your ADU project.
Total Return On Your ADU Investment
1,739%
Compare to other investments:
Real Estate
Avg. 6-8%
Stocks
Avg. 5-7%
Savings Account
Avg. 2-4%
Financing your ADU
made simple
We proudly extend flexible financing options to the homeowners we serve, breaking down the full cost of an ADU into manageable payment schedules. Here's how our process works.
1
Easily apply online
Easily apply with our hassle-free online process.
2
Pre-qualify
See if you pre-qualify for an even quicker turnaround.
3
Fast review process
Sit back and relax while we handle the review process.
4
Approval
Receive a notification the moment you’re approved.
Your top ADU questions answered
Answers to your most common ADU building questions.
The responsible licensed professional provides the required signed or stamped work within their scope. Confirm their identity, license, and responsibilities in the project agreement. A general service-page description is not a substitute for that project-specific information.
Confirm the exact services in the proposal. Design, construction observations, special inspections, and building-department inspections serve different purposes and may involve different parties. Do not assume one replaces another.
Describe the concern and provide records and photographs. The responsible professional can determine what assessment is appropriate. If the matter involves potential immediate danger, use the appropriate local emergency or building-safety channel rather than waiting for a routine design consultation.