Premier ADU Contractor & Garage
to ADU Conversion Specialist in Sherman Oaks, CA
Build Smart. Live Better. A1 ADUs.
Turn underutilized garage space into valuable living square footage or high-yielding rental income. A1 ADU Contractor is a licensed ADU builder providing complete, end-to-end garage conversion contractor services—from architectural planning and LADBS permit approvals to 100% in-house custom construction across Sherman Oaks and Los Angeles County.
- 24/7 Availability & Consultations
- 15+ Years Industry Experience
- Zero Subcontractors – 100% In-House Master Crews
- 5,000+ Completed Projects in LA County
- 5.0 Star Rated on Google (40+ Verified Reviews)
Reviews
Years experience
Clients Serviced
Full-Service ADU Construction & Garage Conversion Services
Garage to ADU Conversion Specialist
Transforming existing 1-car, 2-car, or detached garages into fully independent, habitable living units complete with full kitchens, modern bathrooms, private entrances, and dedicated HVAC systems. Our specialized garage to adu conversion process maximizes living space while preserving structural integrity.
Custom ADU Builder
As a full-service ADU builder, we design and construct ground-up detached accessory dwelling units, attached ADUs, and Junior ADUs (JADUs). Whether for multi-generational family living or passive rental income, we build spaces tailored to your exact property layout.
ADU Construction Sherman Oaks & Los Angeles
Navigating local regulations requires deep expertise in Los Angeles Department of Building and Safety (LADBS) zoning and California state ADU laws (AB 68, SB 9, SB 1211). We handle 100% of the permitting process, floor plans, structural calculations, and city inspections so you never deal with red tape.
2-Car Garage & Above-Garage Conversions
Expand vertically or horizontally. We specialize in 2-story ADU construction above existing garages and multi-car garage conversions, optimizing narrow San Fernando Valley lots with intelligent space planning.
Comparing ADU Construction Types in Sherman Oaks & Los Angeles
| ADU Type | Typical Size | Est. Timeline | Primary Best Use | LADBS Permitting Focus |
| Garage to ADU Conversion | 300 – 500 sq. ft. | 8 – 12 Weeks | High ROI Rental / Guest Suite | Existing slab assessment, ceiling height, setback rules |
| Detached Custom ADU | 500 – 1,200 sq. ft. | 12 – 18 Weeks | Multi-Gen Living / Rental Income | Rear/side 4-foot setbacks, utility trenching, lot coverage |
| Attached ADU Addition | 400 – 1,000 sq. ft. | 10 – 16 Weeks | In-Law Suite / Extended Living | Firewall separation, shared wall integration, electrical load |
| Above-Garage 2-Story ADU | 400 – 800 sq. ft. | 14 – 20 Weeks | Private Apartment / Home Studio | Foundation retrofitting, structural support framing, height limits |
Why Homeowners Choose A1 ADU Contractor
No Subcontractors Ever: Unlike other general contractors who outsource your build to third parties, every aspect of your project is completed by our vetted, in-house team of master builders.
Flat-Rate Upfront Pricing: Transparent payment schedules with zero hidden fees. You know exact costs before break ground.
24/7 Client Support: Construction questions don’t stop at 5 PM. Our team provides around-the-clock availability for consultation, updates, and emergency support.
Proven Track Record: Over 15 years of dedicated construction experience with more than 5,000 successful projects completed across the San Fernando Valley and Los Angeles.
Verified Client Reviews
Working from my dining table was destroying my back. The crew transformed my messy Silver Lake garage into a quiet home office in just three weeks. There were absolutely no hidden fees, just straightforward pricing and workers who showed up at 8 AM sharp every single day.
Getting the plumbing trenched for our North Hollywood garage bathroom was painless. The flat-rate pricing offered upfront gave me absolute peace of mind.
Converting our Encino garage into a studio was incredibly lucrative. The team managed the build perfectly. They passed every local city inspection on the very first try. The transparent payment schedule kept my cash flow entirely manageable while getting the property ready for renters.
Their permitting team got my Burbank garage plans approved by the city in record time without me having to deal with a single piece of red tape.
It turned our underused backyard area into a cozy ADU. The team did outstanding work on the foundation, framing, and interiors. It looks like it’s always been there and we’re already enjoying the extra living space.
Built an ADU for rental income and it rented out faster than expected. The finishes are modern and durable, and everything functions perfectly. The crew was reliable, detail-oriented, and left the site clean every day.
"The team handled everything from permits to finishing with great care. It’s comfortable, private, and blends perfectly with the main house. Best decision we made for our family.
"They maximized the square footage and made it feel bright and spacious. Professional team that respected our property and delivered a high-quality build.
We built a small ADU in the backyard for my aging parents and it turned out fantastic
The best construction company to work with! They have a wide range of skills and are excellent at addressing problems, and we managed to stay on schedule and within budget! Choose these men without a doubt if you ever need anything done to your property.
The A1 ADU Contractor Process
Consultation & Site Review
We understand your goals, inspect your property, and identify the best ADU possibilities based on space, budget, and zoning.
Design & Permit Planning
Our team creates a customized plan and handles all permit requirements, ensuring everything is fully compliant and ready for approval.
Construction & Completion
We build your ADU with quality craftsmanship, manage the full construction process, and deliver a finished space ready to use.
Local Permitting & LADBS Code Compliance in Sherman Oaks & LA County
Building or converting an ADU in Sherman Oaks, Studio City, Encino, or anywhere in Los Angeles County requires strict compliance with local municipal codes and California state mandates. At A1 ADU Contractor, our in-house design and architectural team prepares permit-ready engineering plans designed to clear city approvals quickly.
- Zero-Red-Tape Permitting: We manage all submissions directly with the Los Angeles Department of Building and Safety (LADBS).
- State & Local Zoning Mastery: We leverage California legislation (including SB 9, AB 68, and SB 1211) to bypass traditional zoning barriers, streamline setback approvals, and maximize buildable square footage.
- 100% First-Try Inspection Success: Our structural framing, utility trenching, Title 24 energy compliance, plumbing, and electrical installations are built to pass city inspections on the very first try.
Accessory Dwelling Unit (ADU) Construction
Transforming garages into fully functional living spaces, such as guest houses or rental units, complete with kitchens, bathrooms, and living areas.
Why convert your garage
Maximized Living Space
- Convert existing garage into a livable unit.
- Efficient use of square footage to create multi-purpose areas.
High-Quality Materials
- Use of energy-efficient windows and doors.
- High-grade flooring and fixtures for a polished look.
Complete Customization
- Flexible design options for layout and style.
- Custom cabinetry, lighting, and finishes.
Permitting Assistance
- Navigating city and county building codes.
- Streamlining paperwork and inspections for a hassle-free process.
When you choose our team to convert your garage, we will make your dream come true. We are a team passionate about garage conversions and creating tailored solutions!
Schedule your consultation today!
Why Choose Our ADU Builders
- With all the five-star reviews across our company, we deliver a concierge-level service that exceeds expectations.
- With over 15 years in the industry, we pride ourselves on employing the best installers and using top-quality materials.
- With more than 5,000 completed conversions, we have delivered more projects than any other company in Los Angeles county.
More About Who We Are
A1 ADU Contractor, located in Sherman Oaks, CA, is your trusted partner for transforming underutilized garage spaces into functional, valuable areas for your home. Serving the San Fernando Valley and Los Angeles County, we specialize in a wide range of services, including Accessory Dwelling Unit (ADU) Construction, Home Office Conversions, and Guest Room Additions. Whether you’re looking to create a Recreational Room, an In-Law Suite, or an Additional Kitchen Area, A1 ADU Contractor delivers high-quality craftsmanship. We also offer Yoga or Fitness Studio construction and Art Studios or Workshop conversions, ensuring your garage space perfectly fits your unique needs and lifestyle. Contact us today to schedule a consultation!
ADU Construction: Thinking and Design Process
A1 ADU specializes in Accessory Dwelling Unit (ADU) design and building, turning unused garage spaces into functional, stylish living areas. Our process begins with understanding your needs, whether for rental income, guest space, or family use. We then design a custom layout that optimizes your space, prioritizes energy efficiency, and meets all local building regulations. With high-quality materials and expert craftsmanship, we handle everything from permitting to construction, delivering a finished ADU that enhances your home’s value and fits your unique lifestyle.
The ADU Construction Process
Once the ADU design is authorized, our team proceeds with acquiring the necessary permits to ensure full compliance with local regulations. After permits are approved, we begin site preparation, which may include structural assessments and utility connections. Our skilled builders then transform the garage, framing new walls, installing insulation, and adding windows and doors for optimal functionality and comfort. Plumbing, electrical, and HVAC systems are installed to meet modern standards. Finally, finishing touches like drywall, painting, flooring, and cabinetry bring the ADU to life, resulting in a complete, high-quality living space tailored to your needs.
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Frequently Asked Questions
What garage conversion services does A1 ADU Contractor offer in Sherman Oaks and the San Fernando Valley?
A1 ADU Contractor transforms underused garages into fully functional living spaces. The company builds Accessory Dwelling Units (ADUs) with kitchens, bathrooms, and living areas; home offices; guest suites; in‑law suites; yoga/fitness studios; art studios/workshops; and recreation rooms, serving Sherman Oaks Studio City Encino Winnetka and the wider San Fernando Valley.
Is A1 ADU Contractor available 24/7 for consultations?
Yes. We operate 24 hours a day, 7 days a week (24/7) to answer questions, conduct initial site reviews, and assist home owners across Sherman Oaks and Los Angeles County. Call us anytime at (424) 500-0950.
How much does a garage conversion cost in Studio City and Los Angeles?
A basic home‑office conversion starts at about 25,000$,while a high‑end ADU with a full kitchen and bathroom can reach 125,000$ and above. For a Studio City property, typical project ranges are:
| Conversion Type | Estimated Cost |
|---|---|
| Home Office | 25,00045,000 |
| Basic Studio Apartment | 50,00080,000 |
| ADU with Kitchen | 90,000120,000+ |
| Home Gym | 30,00055,000 |
The final price depends on the size, finish level, and whether new utility connections are needed.
Does A1 ADU Contractor handle permits for ADU projects in Los Angeles County?
Yes. A1 ADU Contractor manages the entire permitting process. The team prepares permit‑ready construction plans that comply with local zoning and building codes, submits them to the Los Angeles Department of Building and Safety (LADBS), and handles all required inspections. This full‑service approach is available in Sherman Oaks, Encino, Winnetka, Studio City, and throughout Los Angeles County.
Which areas does A1 ADU Contractor serve?
The company is based in Sherman Oaks and covers the San Fernando Valley and Los Angeles County. Specific service areas include Glendale, Burbank, Van Nuys, North Hollywood, Reseda, Bel Air, Mission Hills, Sylmar, Pacoima, Sun Valley, Encino, Studio City, Panorama City, Canoga Park, Tarzana, Valley Village, Toluca Lake, San Fernando, Valley Glen, Lake Balboa, Granada Hills, Winnetka, North Hills, and the surrounding region.
What is the step‑by‑step process for a garage conversion with A1 ADU Contractor?
Consultation & design – Understand your needs (rental income, guest space, family use) and create a custom layout.
Permitting – Prepare and submit plans to LADBS; secure all required approvals.
Site preparation – Structural assessment, utility connections, and foundation work.
Construction – Framing, insulation, window/door installation, plumbing, electrical, HVAC.
Finishing – Drywall, painting, flooring, cabinetry, and final inspections.
The company uses only in‑house crews, never subcontractors, to keep projects on schedule.
What are the top benefits of converting a garage into an ADU in Los Angeles?
- Maximised living space – Turn wasted square footage into a usable apartment, office, or studio.
- Rental income – In high‑demand areas like Studio City and Sherman Oaks, a completed ADU can generate consistent monthly revenue.
- Increased property value – A professionally built ADU often adds more value than the construction cost.
- Multi‑generational living – Create a private suite for in‑laws or adult children.
- Full customisation – Choose layouts, finishes, and features that match your home’s style.
What are common challenges when building an ADU in Winnetka or Sherman Oaks, and how does A1 ADU Contractor solve them?
Limited lot size → Innovative multi‑purpose layouts that maximise every square foot.
Zoning & permit restrictions → Deep knowledge of local codes (Winnetka, Sherman Oaks, LADBS) ensures full compliance.
Utility integration → Seamless design for plumbing, electrical, and HVAC to avoid cost overruns.
Aesthetic mismatch → Designs that complement the existing home and neighbourhood character.
Why should I choose A1 ADU Contractor over other ADU builders in the San Fernando Valley?
- 15+ years of experience and 5,000+ completed conversions – more than any other company in Los Angeles County.
- 200+ five‑star reviews and a concierge‑level service that handles everything from design to final walk‑through.
- No subcontractors – every project is built by the company’s own skilled professionals.
- Deep local expertise – the team anticipates LADBS requirements and zoning rules for Sherman Oaks, Encino, Studio City, Winnetka, and the entire San Fernando Valley.
- Transparent pricing with no hidden fees and a commitment to on‑time, on‑budget delivery
Why should I hire a specialized ADU contractor in Sherman Oaks instead of a general contractor?
ADUs involve complex zoning rules, utility connections (sewer, electrical, water metering), Title 24 energy calculations, and LADBS setback regulations. A specialized ADU contractor like A1 ADU Contractor handles design, engineering, permitting, and construction under one roof, ensuring faster turnaround times and eliminating cost overruns.
How much does a garage to ADU conversion cost in Los Angeles and Sherman Oaks?
A standard garage to ADU conversion in Los Angeles typically ranges from $50,000 to $120,000+ depending on square footage, plumbing extensions, kitchen/bathroom finishes, and structural modifications. A basic home office conversion starts around $25,000.
How long does the garage conversion process take from start to finish?
Plan design and LADBS permitting generally take 4 to 8 weeks, while active construction typically spans 8 to 12 weeks. Because A1 ADU Contractor uses exclusively in-house crews and zero subcontractors, we deliver projects on time without trade delays.
Can I convert a detached garage into a rental unit in Sherman Oaks?
Yes. Under California ADU laws, homeowners are allowed to convert existing detached garages into fully independent ADUs for passive rental income, provided the structure meets building codes, fire separation, and utility requirements.
Our Service Areas
- Glendale
- Burbank
- Van Nuys
- North Hollywood
- Reseda
- Bel Air
- Mission Hills
- Sylmar
- Pacoima
- Sun Valley
- Sherman Oaks
- Encino
- Studio City
- Panorama City
- Canoga Park
- Tarzana
- Valley Village
- Toluca Lake
- San Fernando
- Valley Glen
- Lake Balboa
- Granada Hills
- Winnetka
- North Hills
- San Fernando Valley
- Los Angeles County
