Licensed & Experienced ADU Construction Contractor
Adding an Accessory Dwelling Unit (ADU) to your Altadena property is one of the smartest ways to increase your home’s functionality, privacy, and long-term value. Whether you want to create a rental income unit, a guest house, or additional space for family, choosing the right ADU builder in Altadena is crucial for a smooth, code-compliant, and beautiful project.Many homeowners in Altadena choose ADU builder services from Kyra Construction to maximize space, stay code-compliant, and add value to their property.
At Kyra Construction, we specialize in custom ADU construction and garage conversions in Altadena, guiding homeowners from initial design and permitting through construction and final inspection. With over 20 years of experience, our licensed team ensures your ADU is built safely, efficiently, and to your exact specifications.
ADU builder Altadena
What Is an ADU?
An Accessory Dwelling Unit (ADU) is a secondary living space on the same lot as your main home. ADUs come in different forms:
Detached ADUs – a standalone structure separate from your main house
Attached ADUs – additions connected to the main house, such as extending a room or adding a new wing
Garage Conversions – transforming an existing garage into a fully functional living space
Junior ADUs (JADUs) – smaller units, often under 500 sq. ft., that may share utilities with the main home
ADUs are growing in popularity in Altadena due to high housing costs, zoning changes in Los Angeles County, and increased interest in multi-generational living.
ADU builder Altadena
Why Hire a Professional ADU Builder in Altadena?
Building an ADU isn’t like a standard remodel. It requires knowledge of local building codes, permitting processes, structural engineering, and utility connections. Attempting to DIY or hire an unlicensed contractor can lead to:
Failed inspections and costly rework
Structural and safety issues
Permit violations and fines
Delays in construction
By hiring Kyra Construction, you get a licensed, insured, and experienced ADU builder in Altadena who handles every aspect of construction and permitting.
ADU builder Altadena
ADU Construction Process with Kyra Construction
1. Consultation & Site Assessment
We start by evaluating your property, reviewing lot size, setbacks, zoning, and existing structures. This step ensures your ADU meets Los Angeles County regulations and fits seamlessly with your property.
2. Design & Planning
Our team collaborates with designers and engineers to create a functional and visually appealing ADU. Whether it’s a guest suite, rental unit, or office, the design maximizes space and comfort.
3. Permits & Approvals
ADU construction in Altadena requires multiple permits, including:
Building permits
Electrical, plumbing, and mechanical permits
Plan check approvals
Energy compliance (Title 24)
We manage the entire permitting process, saving you time and ensuring full compliance.
4. Construction & Project Management
Our licensed team handles all phases of construction:
Site preparation and foundation
Framing and roofing
Electrical, plumbing, and HVAC
Interior and exterior finishes
Inspections at key milestones
We maintain transparent communication and weekly updates, so you’re always informed about progress.
5. Final Walkthrough & Completion
Once construction is complete, we conduct a final walkthrough, ensuring your ADU meets your expectations, passes all inspections, and is ready for occupancy.
ADU builder Altadena
Types of ADUs We Build
Detached ADUs
Stand-alone units in your backyard or side yard. Ideal for rental income, guest houses, or independent living spaces.
Attached ADUs
Connected to your main home, often expanding an existing room or adding a new wing. Perfect for family expansions or multi-functional spaces.
Garage Conversions
Transform underutilized garages into fully functional living areas. We handle insulation, flooring, plumbing, electrical, and finishes.
Junior ADUs (JADUs)
Smaller units that typically share utilities with the main house. Great for efficiency and lower construction costs while adding value to your property.
Cost of Building an ADU in Altadena
ADU costs vary based on size, design, finishes, and site conditions. Here’s a general breakdown:
Junior ADU (under 500 sq. ft.): $80,000 – $150,000
Garage conversion ADU: $100,000 – $200,000
Detached ADU (500–1,200 sq. ft.): $150,000 – $400,000+
Custom multi-story ADU: $400,000+
Important: If the client adds extra work during construction (custom layouts, premium finishes, expanded scope), the timeline and cost will adjust. At Kyra Construction, we provide clear approvals for any scope changes before work begins.
Permits & Code Compliance
ADUs in Altadena are subject to Los Angeles County and local zoning regulations. These include:
Maximum unit size and height restrictions
Setbacks from property lines
Parking requirements (unless exemptions apply)
Building codes for structural, electrical, plumbing, and energy compliance
We handle all plan submissions, inspections, and approvals to ensure your ADU is fully code-compliant, giving you peace of mind and protecting your investment.
Benefits of Adding an ADU
Rental Income: Generate passive income from a long-term rental.
Multi-generational Living: Provide private living space for family members.
Increase Property Value: A well-built ADU can significantly boost resale value.
Flexible Space: Use it as an office, studio, gym, or guest suite.
Efficient Use of Land: Maximize property potential without moving.
Altadena homeowners often combine ADU construction with landscaping and site improvements for a complete backyard transformation.
Why Choose Kyra Construction for ADUs in Altadena
20+ Years of Experience: Licensed and insured contractor specializing in ADUs and remodels.
Full-Service Team: Design, permitting, construction, and inspections handled in-house.
Local Knowledge: Expertise with Altadena zoning, permits, and site conditions.
Transparent Pricing: Detailed cost estimates and scope updates for extra work.
High-Quality Craftsmanship: Attention to detail in every project, from framing to finishes.
We’re not just builders we’re trusted partners who ensure your ADU project is smooth, legal, and beautifully executed.
Frequently Asked Questions – ADU builder Altadena
Q: How long does it take to build an ADU in Altadena?
A: Most ADUs take 6–12 months from design and permits to construction completion, depending on size and complexity.
Q: Do I need a permit for an ADU?
A: Yes. All ADUs in Altadena require building permits, inspections, and plan approvals.
Q: Can I live in my home while my ADU is being built?
A: In most cases, yes. If construction is extensive (garage conversion or second-story ADU), we’ll advise on safety and logistics.
Q: What is the difference between a garage conversion and a detached ADU?
A: Garage conversions repurpose existing space; detached ADUs are new, standalone structures. Both can be used for rentals or extra living space.
Q: Will an ADU increase my property value?
A: Absolutely. A properly permitted ADU can significantly increase home value and rental potential.
Get Started with Your ADU in Altadena
If you’re ready to add an ADU to your Altadena home, don’t wait. Early planning, design, and permit coordination save time and money.
Contact Kyra Construction
Call: (818) 922-5291
Email: info@kyraconstruction.com
Visit: kyraconstruction.com
Location: 15233 Ventura Blvd, Suite #705, Sherman Oaks, CA 91403
Kyra Construction
Design it. Build it. Perfect it.
Images shown are for design inspiration only