L Square Construction is an ADU contractor serving Los Angeles & Orange County, CA. They offer full-service design-build ADU solutions including detached units, in-law suites, garage conversions, and energy-efficient builds with solar integration.

L Square Construction – ADU Contractor in Irvine, CA

About L Square Construction

About L Square Construction and ADU Services

An accessory dwelling unit (ADU) is a secondary, smaller residential unit built on a property that already has a primary home. A well-designed ADU can serve a variety of purposes — from providing extra living space and housing family members to generating rental income. L Square Construction operates as an ADU contractor serving both Los Angeles and Orange County, CA, offering design and build services tailored to individual property needs and budgets.

L Square Construction handles the full scope of ADU development. This includes custom ADU design, permit acquisition, construction, and final finishing. By managing the entire process, they aim to reduce the complexity that often comes with home construction projects. Their work covers a range of ADU types, including detached ADU builds, in-law suites, and other accessory dwelling configurations suited to different lot sizes and homeowner goals.

Energy-Efficient ADU Construction

One area of focus for L Square Construction is energy efficiency. They incorporate smart design principles and solar solutions into their ADU builds, with the goal of reducing reliance on the grid. Their ADUs are designed to be notably more energy-efficient than conventionally built homes, and they emphasize eco-conscious construction practices throughout their projects. This approach is intended to benefit both the environment and the long-term operating costs for property owners.

As an ADU builder in Los Angeles, L Square Construction works to deliver units that are move-in ready upon completion. Whether the goal is a backyard cottage, a granny flat, a Casita, or a modern rental unit, their team works to match the design and construction to the specific space and lifestyle of the homeowner.

Team and Construction Standards

The team at L Square Construction includes professionals with academic backgrounds from institutions such as USC, UCLA, and UCI. They use premium materials and advanced construction methods across their projects, which span ADU builds, home additions, and remodels throughout Los Angeles and Orange County.

Their services as an accessory dwelling unit builder are designed to be comprehensive — covering everything from initial design concepts through to final construction. This design-build approach is intended to keep projects on schedule and within the agreed budget, while maintaining consistent quality standards across each build.

  1. Custom ADU design and permitting
  2. Detached ADU and in-law suite construction
  3. Energy-efficient builds with solar integration
  4. Home additions and remodels
  5. Services available in Los Angeles and Orange County, CA

L Square Construction positions itself as a full-service garage conversion contractor and ADU builder, working across a variety of project types to add functional living space and long-term value to residential properties.

Services

L Square Construction performs the following services

  • Architecture & Design
  • Permit Specialist
  • Construction
  • Finishing & Fit-out

L Square Construction Reviews

Md. Nazmus Sadat

2025-11-05
"Were absolutely thrilled with our new kitchen, thanks to Kikos incredible design and Brians outstanding contracting work! Kiko transformed our space into a beautiful, modern, and open-concept kitchen that still feels warm and inviting. The dark cabinetry, spacious counters, and large windows make it both stylish and functional. Brian and his team brought the design to life perfectly their attention to detail, professionalism, and commitment to finishing on time made the entire process smooth and stress-free. The final result exceeded our expectations! We highly recommend L Square Construction for anyone looking for top-quality design and craftsmanship."

Efrain Guadama

2025-07-31
"I highly recommend L Square Constructions since their team is very attentive with your needs and are always there to explain the process and give you all the details. One of my friends works there and I can vouch for their efficiency and attention to detail."

Leo Ren

2025-04-03
"I had a great experience working with Brian and Kiko. They helped me plan and build an ADU in my backyard from start to finish. The team was professional, responsive, and made the whole process smooth and stress-free. Highly recommend if youre looking to add value to your property or need more living space."

Christy Leung

2024-09-03
"I had a great experience with L Construction during my recent home remodel. The team was friendly, attentive, and always kept me updated on the progress. They worked efficiently while still paying attention to the little details, and the end result is exactly what I hoped for. It was a relief to have a project go smoothly and stay on track. Im really happy with how everything turned out and would gladly work with them again!"

John Liang

2024-09-03
"Brian and his team did an exceptional job designing and building my ADU! From start to finish they were basically there every step of the way - from inspection to questions being answered they were prompt and knowledgeable about the construction process and what type of finished fixtures they recommended. I cannot express how satisfied I am with my ADU, which will be used for my AirBnB business! My tenants customers will enjoy what Brian and his team created!"

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Specifics

Eco-Friendly

Opening hours

Monday 9:00AM - 5:00PM
Tuesday 9:00AM - 5:00PM
Wednesday 9:00AM - 5:00PM
Thursday 9:00AM - 5:00PM
Friday 9:00AM - 5:00PM
Saturday 9:00AM - 5:00PM
Sunday -

Location

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