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.
Follow Us
Home Additions & Remodeling
More room. A home that still works.
Expand or reshape your home around the way you want to live. Uni Construction helps plan additions and remodels with attention to the existing building, structural connections, circulation, systems, and the practical conditions of construction.
Los Angeles ADU BUILDERS
Our Promise To You
Home Additions & Remodeling for your property
Home Additions & Remodeling for your property
An addition changes more than the edge of a floor plan. It can affect light, movement between rooms, roof and drainage details, existing systems, and the way the home relates to its yard. The goal is useful new space with a deliberate connection to the rooms you already have.
20 years of ADU expertise
A remodel may also involve structural changes, new services, or a change in how an area is used. Define the extent of work clearly, including the existing rooms and exterior areas affected by the new design. The drawings and proposal should distinguish retained, removed, and proposed construction.
Home Additions & Remodeling for your property
Document the spaces affected and review available records. Compare circulation, furniture, daylight, and the relationship between new and existing rooms. Resolve the purpose of the addition before assuming that a larger footprint alone will solve the problem.
Trust the process, love your ADU
Coordinate new openings, altered load paths, foundations, and connections with the responsible structural professional. Existing construction may need investigation. A change that appears small on a floor plan can have consequences elsewhere in the building.
50+ five-star reviews
Need an ADU? We handle everything.
-
Feasibility
-
Design & Plan
-
Permit
-
Build
Start with inspiration
Browse ADU floor plans
Plan roof connections, weather protection, drainage, heating and cooling, plumbing, and electrical work together. Define the areas of the existing home affected by tie-ins. Matching an exterior finish does not by itself resolve the technical connection.
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.
Learn more
Discuss work zones, access, temporary protections, service interruptions, and whether parts of the house can remain occupied. Include restoration and finishing around affected areas in the scope. Establish inspection stages and a written process for discovered conditions and changes.
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.
Learn more
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.
Learn more
Explain which activities the home does not support and what needs to change. Share records, photos, priorities, and budget expectations. Compare reconfiguration with expansion when both may address the brief.
Test how the proposed space links to the existing rooms, yard, and entry. Review doors, circulation, daylight, and furniture. Decide which areas need alteration and which should remain protected during the project.
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.
Learn more
Develop the selected design with structural and other required documentation. Clearly describe existing and proposed work. Coordinate authority responses and confirm remaining permit conditions before finalizing the construction sequence.
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
Confirm selections, access, household arrangements, and protection measures. Coordinate required inspections and record changes. Complete the agreed restoration, closeout information, and final signoffs so the addition becomes a usable part of the home.
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
Home Additions & Remodeling 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.
Home Additions & Remodeling for your property
An addition expands the existing home; an ADU creates a separate dwelling arrangement with its own applicable requirements. Start with intended use and household independence, then confirm the appropriate project type for the property.
Home Additions & Remodeling for your property
Discuss the rooms and services affected by each phase. Occupancy depends on the scope and safe practical arrangements. Do not assume that living through a remodel is possible simply because the new work is concentrated at one side of the house.
Home Additions & Remodeling for your property
Review roof form, proportions, openings, and materials alongside technical details. A coherent addition can use compatible or distinct elements, but the connection should be intentional and supported by a complete drawing package.
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.
That can be explored against the property, existing structure, intended use, and applicable requirements. Bring a description of the space you need rather than a fixed footprint, so layout alternatives can be evaluated before detailed design.
The proposal should identify architectural drawings, required engineering, supporting documents, submission coordination, and fees separately. These services are not automatically included in every remodel or construction agreement.
Use the same drawings, specifications, existing-condition assumptions, and restoration scope. Compare allowances, exclusions, temporary protections, and how changes are priced. An estimate with omitted tie-in work may appear lower without describing the same project.
Our work
A closer look inside.
