Licensed ADU Construction Company in Orange County
Create More Living Space with Expertly Designed ADUs.
This is Where
Your Dream 
Home 
Becomes Reality.
Hello, I am Kiko - CEO of L Square...
L Square Construction
Get to Know Us
L Square Construction is a licensed ADU construction company specializing in ADUs, home additions, and garage conversions. We handle architecture, structural engineering, and interior design in-house, ensuring top quality. Our expert team, with graduates from USC, UCLA, and UCI, brings fresh ideas and attention to detail to every project. As a trusted ADU contractor in Los Angeles, we focus on delivering custom ADU designs and innovative building solutions that meet your needs. Our goal is to create beautiful accessory dwelling unit designs while prioritizing service over profit.
Dependability. Integrity. Expertise.
We serve LA & Orange County.
One bedroom
540 sq. ft.
One bedroom
540 sq. ft.
One bedroom
540 sq. ft.
Turn Your Yard into a Functional Space with a Custom ADU in Los Angeles.
Make Your Yard Work with ADU.
As seen in:
City of Orange
City of Torrance
Living in a Thoughtfully
Designed Space.
Living in a Thoughtfully
Designed Space.
What's an ADU
An ADU is a secondary and architecturally diminutive unit on a property that already has a primary residential unit. A thoughtfully designed accessory dwelling unit provides extra living space, rental income, or a private retreat. As expert ADU builders in Los Angeles, we craft functional, high-value solutions tailored to your needs.
Custom ADU Homes
Garage Conversion ADU
ADU Design-Build
Steps to Build an ADU
Simple & Stress-Free
We believe that construction should be easy. That’s why we guide you through every step, from concept to completion.
01
Custom ADU Design
We create a custom ADU design that fits your needs and budget, ensuring a smooth process as a trusted Los Angeles ADU contractor.
02
Design a Custom ADU Plan
Our team designs functional and stylish ADUs, from garage conversions to custom additions, ensuring quality and innovation in Los Angeles.
03
Permits for your Custom ADU
04
Construction – Building Your Custom ADU
Our expert ADU contractors in Orange County, CA, build your ADU with precision, staying on schedule and within budget.
05
Move In - Your Custom ADU is ready
Your new accessory dwelling unit is fully move-in ready, adding comfort, value, and extra living space to your property.
Want the Details?
Learn more about our seamless design and construction process.
Watch Us On YouTube
This New Space Might Steal the Spotlight from Your Main Home.
Our Services
Custom ADU Homes
ADUs are the future of home living, offering rental income, extra space, or a private office. L Square Construction designs and builds custom ADUs to maximize your property’s value and functionality.
ADU Design-Build
Expand your living space, boost property value, and earn extra income with an ADU from L Square Construction. We handle everything from design to construction, ensuring a seamless, high-quality build.
Garage Conversion ADU
L Square Construction specializes in high-quality garage conversion ADUs that add living space, rental potential, or a private office. Our experienced builders deliver a seamless process and boost your property’s value and function.
Backyard Cottage Construction
Looking for a cozy cabin or cottage in Los Angeles? LS Construction crafts beautiful, high-quality cottages tailored to your unique needs with expert craftsmanship.
Granny Flat
At LS Construction, we build high-quality ADU granny flats for extra living space, rental income, or family housing. From design to permits, we handle it all — affordable, functional, and tailored to your needs.
In-law Suite
Looking for a house with an in-law suite in Los Angeles? LS Construction designs stylish, private spaces to keep loved ones close.
Benefits of having an ADU
Extra Income
A thoughtfully designed accessory dwelling unit (ADU) provides rental income, which is something very useful in such an expensive place as California.
Extra Space
An ADU provides extra living space, for relatives moving to your property or for new family moments
More Property Value
Imagine your dreamy private retreat… As expert ADU builders in Los Angeles, we craft functional, high-value solutions tailored to your needs.
Custom ADU Homes
Garage Conversion ADU
ADU Design-Build
Sustainability
Transform your backyard into an energy-efficient ADU in Los Angeles with smart designs and solar solutions. Our custom ADUs reduce grid dependence while adding functional space and value to your property. Eco-friendly, efficient, and built for the future.
Cutting-Edge Energy Solutions
Innovative designs that reduce your carbon footprint.
Designed for Efficiency
Over 2x more energy-efficient than traditional homes.
Legal Requirements for ADUs in California
Building an ADU in Orange County requires adherence to local zoning laws and building codes. The regulations often include restrictions on the size of the unit, setbacks from property lines, and parking requirements. Depending on the location, some areas may have relaxed zoning laws, making it easier to build an ADU. It’s essential to consult with the Orange County planning department to ensure compliance with all requirements before starting construction.
AS FEATURED ON
Types of ADU
Expert ADU design and construction services customized to fit your space and lifestyle.
Garage Conversion
Home Conversion
Garage Addition
New Detached ADU
Home Addition
Junior ADU (JADU)
Costs Associated With Building an ADU
From design to permits to construction, we handle everything.
The costs of building an ADU in Orange County can vary significantly based on factors such as the size of the unit, design complexity, and the type of ADU you choose. On average, the total cost of building an ADU ranges from $120,000 to $250,000. This includes site preparation, foundations, framing, plumbing, electrical systems, and interior finishes. Smaller or prefab units can be more affordable, while custom-built, larger units will be on the higher end of the spectrum. Additional costs such as permits, inspections, and utility connections should also be factored into the budget.
Local regulations for building an ADU
Beware!
Building an ADU in Orange County requires adherence to local zoning laws and building codes. The regulations often include restrictions on the size of the unit, setbacks from property lines, and parking requirements. Depending on the location, some areas may have relaxed zoning laws, making it easier to build an ADU. It’s essential to consult with the Orange County planning department to ensure compliance with all requirements before starting construction.
Typical Construction timeline for an ADU
Built by experts, designed for longevity.
The construction timeline for an ADU in Orange County can range from 6 to 12 months, depending on the type of unit, complexity of the project, and the time required to obtain permits. Smaller projects such as garage conversions may be completed more quickly, while custom detached units can take longer due to the need for more extensive design work, permits, and construction efforts. Be sure to plan for potential delays due to zoning approvals or weather conditions.
Why should I consider an ADU?
Custom Designs Tailored to Your Needs.
1. Extra Income
Rent it out for passive income.
Short-term rentals (Airbnb, VRBO) can be highly profitable.
2. Increased Property Value
ADUs boost home value by adding livable space.
Attracts buyers looking for multi-generational or rental potential.
3. Affordable Housing Solution
Cheaper than buying a new home.
Helps family members (aging parents, college students) live nearby.
4. Flexible Living Space
Use it as a:
✅ Home office
✅ Guest house
✅ Art studio or gym
5. Faster Approval Than New Construction
Many cities streamline permits for ADUs to ease housing shortages.
6. Sustainability Benefits
Smaller footprint = lower energy use.
Can be built with eco-friendly materials.
Key Steps to Get Started
Check local zoning laws (some areas have relaxed ADU rules).
Plan your budget (prefab ADUs can save time/money).
Hire a contractor experienced in ADUs.
Apply for permits before construction.
Frequently Asked Questions
An accessory dwelling unit (ADU) is a small, independent living space on your property. It’s ideal for rental income, guest housing, or an in-law suite for family members.
Costs vary based on size and design. Our ADU cost calculator provides an estimate, and as a trusted ADU construction company, we offer accurate quotes and financing options.
Yes! A garage conversion ADU is a popular way to add extra living space. As experienced garage conversion builders, we ensure a seamless process from permits to completion.
Use our home addition cost estimator or construction price calculator for an estimate. Our ADU design-build team in Orange County provides customized solutions to fit your budget.
Absolutely! We specialize in ADU projects in Los Angeles and Orange County, creating efficient and stylish living spaces.
A professional ADU contractor in Los Angeles, like LScontractor, ensures compliance with city regulations, high-quality construction, and efficient project management. We handle everything from custom ADU designs in Orange County to final inspections.
Yes! We design and build cabins in Los Angeles and Orange County, as well as backyard cottages for homeowners seeking extra space or rental opportunities.
Yes! Smart home automation reduces energy waste by optimizing lighting, climate control, and appliance usage. Automated schedules and thermostat adjustments can help lower energy bills.
Our systems use encrypted connections, multi-factor authentication, and real-time alerts to protect your home and data. Features like smart locks, motion sensors, and remote monitoring provide additional security.
Yes! Our smart home solutions are designed to be scalable. You can start with basic automation and add features like security upgrades, smart entertainment, or climate control whenever you’re ready.
Need more space? Let’s build something you’ll love!
Your home should grow with you—let’s make it happen!
Big dreams for your home? We’re here to bring them to life.
From ideas to reality, we’re with you every step of the way.
Request a free consultation to see how we can help you build the ADU of your dreams