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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Construction & General Contracting
Build from a clear, coordinated scope.
Connect the plans with the people, materials, and work needed on site. Uni Construction provides construction services for agreed residential and light commercial projects, with the scope, responsibilities, selections, and change process established before work begins.
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Construction & General Contracting for your property
Construction & General Contracting for your property
A construction proposal is useful when it describes the same project the owner expects. Drawings, specifications, site assumptions, allowances, and exclusions need to be read together. The lowest headline number may describe a different scope if important connections, restoration, or selections are missing.
20 years of ADU expertise
Construction planning also addresses how the site will operate: access, deliveries, temporary protections, occupants, inspections, and communications. Those practical decisions help turn approved documents into a sequence of work with identifiable responsibilities and a documented process for changes.
Construction & General Contracting for your property
Plan new building work and its connections to an existing occupied property. Define site preparation, foundations, structure, envelope, systems, and finishes. Include the work around the building, such as agreed paths, drainage, and restoration, so the full scope is visible.
Trust the process, love your ADU
Establish retained, removed, and proposed work, including tie-ins to existing systems and finishes. Discuss investigation, temporary protection, and household arrangements. Existing conditions may become clearer during demolition, so agree how questions and changes will be documented.
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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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Browse ADU floor plans
Review the intended use, landlord or owner responsibilities, existing building conditions, and required approvals. Define the premises and work included in the proposal. Coordinate access and operating constraints with the parties responsible for the property.
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 work stages, procurement, required inspections, and project questions within the agreement. Record approved changes and current documents. At completion, review outstanding items, agreed equipment information, and the signoffs needed for the intended use.
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 drawings, approval status, specifications, and known site conditions. Identify missing information and clarify who resolves it. Establish whether pricing is conceptual or based on a defined package before comparing figures.
Confirm inclusions, exclusions, allowances, selections, payment terms, and change procedures. Discuss site access, occupants, protection, and anticipated interruptions. Define responsibilities for permits, inspections, utilities, and separately contracted work.
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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Plan work sequences and material decisions around the approved documents and site conditions. Route technical questions to the responsible professional. Document changes before proceeding and coordinate required inspections at the appropriate stages.
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
Review agreed completion items and closeout documents. Confirm required final approvals and explain remaining responsibilities. Retain equipment and maintenance information supplied under the agreement, along with the record of approved changes.
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
Construction & General Contracting 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.
Construction & General Contracting for your property
Compare the specification, quantities, site assumptions, and restoration work. Separate fixed items from allowances and unresolved work. Ask how a selection or discovered condition changes the price and schedule before authorizing it.
Construction & General Contracting for your property
Identify the designer and engineers responsible for clarifications. A contractor’s field question may require a revised detail or authority review. Clear responsibility helps prevent an undocumented site decision from becoming a design change.
Construction & General Contracting for your property
Discuss the work area, deliveries, debris, storage, parking, occupants, and service interruptions. Commercial work may also involve landlord requirements or operating hours. Put important access and protection arrangements into the plan.
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.
Share the full approved set, permit conditions, specifications, and status of consultant involvement. We can discuss the construction scope and remaining clarifications. Approval alone may not resolve selections, site allowances, or procurement details needed for pricing.
Uni Construction’s published service scope includes residential construction and light commercial or tenant-improvement work. The appropriate scope depends on the actual building, intended use, approvals, and project requirements.
Use the written procedure in the agreement. Describe the change, obtain technical input where needed, and document price and schedule implications before approval. A verbal instruction should not replace a clear record of added or altered work.