Why Select an Attached ADU in Irvine?
Enhance the adaptability of your property without sacrificing your exterior space.
The addition of accessory dwelling units (ADUs) provides the perfect solution for expanding your property without sacrificing the link to your main residence. Whether you seek to generate extra income, house relatives, or simply increase convenience, an attached ADU offers a versatile and cost-effective solution.
Boost Property Value
Introducing an additional ADU onto your dwelling not only heightens its value, but also enhances its appeal. Through seamlessly blending in with the existing structure, this extension adds a captivating element to your home, potentially piquing the curiosity of potential buyers or renters.
Enhancing Domestic Homes
Having a nearby Accessory Dwelling Unit (ADU) can serve as a perfect choice when creating a private sanctuary for aging caretakers, a rented apartment for additional income, or a hosting suite for welcoming beloved family members and friends.
A cost-effective solution.
Attached ADUs often need less stuff and effort versus separate places so they're a budget-friendly way for boosting how useful your house is perhaps?
In-Law Suites / Granny Flat
Give your loved ones the place they deserve.
What We Offer:
The Contemporary Tiny Home Difference
Our staff specializes in creating attached ADUs in Irvine California that feel like a seamless extension of your home. We handle everything from feasibility studies to permit applications and construction management. Our designs prioritize comfort, energy efficiency, and adaptability to guarantee your attached ADU matches your family’s exact requirements.
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Get Your Free Consultation Today!
At L Square Construction, we prioritize quality craftsmanship and customer satisfaction. Whether you need a new granny flat or a complete remodel, our dedicated team is here for you. With years of experience in Irvine area, we’re ready to bring your vision to life. Contact us for personalized solutions today!
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Benefits of Building an Attached ADU in Irvine California
✅ Passive Rental Income – Earn extra cash by renting out your ADU.
✅ Increased Property Value – ADUs boost resale value significantly.
✅ Multi-Generational Living – Perfect for aging parents or adult children.
✅ Fast Approval Process – California laws streamline ADU permits.
✅ Flexible Use – Can serve as a home office, guest house, or rental unit.
How Long Does It Take to Build an Attached ADU in Irvine California?
Permitting: 3–6 months (varies by city and project complexity).
Construction: 6–12 months (depends on ADU type and contractor availability).
Total Timeline: 9–18 months from planning to completion.
Attached ADUs Regulations in Irvine California
California has relaxed ADU laws to encourage construction, but Irvine has specific rules:
📏 Size Limits:
Detached ADUs: Up to 1,200 sq ft (varies by lot size).
Attached ADUs: Max 50% of the primary home’s size.
🚗 Parking Requirements:
Usually 1 parking space per ADU, but waived if near transit.
🏡 Owner Occupancy:
Not required in California (as of 2025).
⚖️ Zoning & Permits:
Must comply with Irvine’s local zoning laws.
A building permit and plan review are mandatory.
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Why Choose an Attached Custom ADU in Irvine California?
A custom Accessory Dwelling Unit (ADU) offers the opportunity to create a living space perfectly suited to your specific requirements—whether you envision a stylish luxury guest house, a contemporary rental apartment, or a comfortable and practical in-law suite. In a competitive housing market like Irvine, where demand for additional housing is consistently high, investing in an ADU not only enhances your property’s value but also provides a reliable source of rental income. Beyond financial benefits, ADUs contribute to increasing local housing options, supporting multi-generational living, and promoting sustainable urban development by maximizing existing land use. Whether for personal use or as an investment, a well-designed custom ADU is both a smart and adaptable solution for homeowners looking to optimize their property’s potential.
- More profit
- More space
- Having your family ones close
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What They Say About L Square Construction
Building an ADU in Irvine is a wise financial move, thanks to flexible state laws and high rental demand. By understanding the types, benefits, timelines, and regulations, you can confidently start your ADU project.
Need help with your custom ADU? Contact local Irvine ADU specialists for a seamless build!
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The Origin of ADUs: A Brief History
Accessory Dwelling Units (ADUs) are not a new concept—they have been around for centuries in various forms across different cultures. Originally known as “granny flats,” “in-law suites,” or “backyard cottages,” ADUs were designed to provide additional living space for extended family members.
Early Beginnings
Europe & Colonial America – Many historic homes featured “carriage houses” or “servants’ quarters,” which functioned similarly to modern ADUs.
Post-War Housing – After World War II, cities like Los Angeles saw a rise in garage conversions to accommodate returning soldiers and growing families.
Modern ADUs in California
California has been at the forefront of ADU development due to its housing crisis. In 2016, the state passed laws to reduce barriers to ADU construction, making it easier for homeowners to add secondary units. Santa Ana, like many cities in Orange County, has embraced ADUs as a solution to affordable housing shortages.
Today, ADUs are more popular than ever, offering flexibility, affordability, and smart urban density—proving that this centuries-old housing concept remains highly relevant.
Engineering your dreams with us.
ADU Costs, Designs and Permits in California COMPLETE GUIDE 2025 UPDATED
ADU Costs, Designs, and Permits in Orange County – Complete Guide If you’re considering adding an Accessory Dwelling Unit (ADU)
Energy-Efficient ADUs in California: Long-Term Savings
Unlocking Long-Term Prosperity with Energy-Efficient California ADUs in San Ysidro Accessory Dwelling Units (ADUs) represent a significant opportunity for Homeowners
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Orange California
Project Overview
This project was undertaken by a professional flipper who initially purchased the house for $1,025,000. After a carefully planned and executed remodel, which included modernizing the interiors and enhancing the overall design, he invested $190,000 in construction costs. The property was then successfully sold for $1.4 million, showcasing the value added through the renovations and strategic improvements.
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Transform Your Space Like This ADU—See What’s Possible!
Inspired by this sleek, functional design? We specialize in turning visions into reality with custom ADUs, remodels, and construction tailored to your lifestyle.
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Affordable Attached ADU Construction Services in Orange County
Looking for affordable ADU construction services in Orange County? Our expert team specializes in designing and building high-quality accessory dwelling units (ADUs) at competitive prices. Whether you’re looking to expand your living space or create rental income, we offer cost-effective solutions tailored to your needs. With years of experience in the industry, we ensure a smooth, stress-free construction process while delivering exceptional value and service.
Why Choose Our Affordable Attached ADU Services?
- Competitive pricing without compromising quality
- Customized solutions to suit your needs
- Experienced professionals handling every aspect of the construction process
Meet our Team
Design and Construct an Attached ADU in California
Are you ready to design and construct an Attached ADU in California? Our team of skilled architects and builders is here to help you every step of the way. We understand the unique zoning regulations and design requirements in Orange County, ensuring that your ADU not only fits seamlessly into your property but also meets all local codes. From initial design to final construction, we offer full-service ADU solutions that cater to your specific needs.
Our ADU Design and Construction Process
Consultation and Planning
Discuss your goals and explore design options.
Permitting and Approvals
We handle all necessary permits and ensure compliance with local regulations.
Construction
Skilled contractors bring your ADU design to life with precision and quality.
Final Touches & Move-In Ready Space
Once construction is complete, we ensure every detail is perfect before you move in. From flooring to fixtures, we make sure your granny flat is stylish and ready for use.
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Our Latest Projects
Check out the latest whole house remodel we did in Rancho Palos Verdes, California
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Attached ADU Construction Services in California
Transform your property with our Attached ADU design and construction services. Whether you want to build a guest house, home office, or rental unit, we offer comprehensive design and construction services that bring your vision to life. Our experienced professionals will guide you through the entire process, from concept to completion, ensuring a high-quality ADU that maximizes your property’s potential.
Key Benefits of Our Attached ADU Design and Construction Services
- Full-service design and construction from start to finish
- Expert knowledge of local ADU regulations
- Timely project completion and high-quality craftsmanship
Experienced Attached ADU Contractors in California for Home Extensions
Looking to expand your home with a custom ADU? Our experienced ADU contractors in Orange County specialize in home extensions that enhance both functionality and value. With years of experience in building ADUs, we are experts in navigating local regulations and delivering high-quality, durable units. Whether you need extra living space, a home office, or a rental unit, we provide reliable and professional construction services tailored to your goals.
Our Expertise in Home Extensions
- Custom ADU designs tailored to your specific needs
- Knowledgeable contractors familiar with Orange County’s zoning codes
- High-quality construction that adds long-term value to your property