Expert ADU Design Services in Los Angeles, CA

Custom Accessory Dwelling Unit Design That Maximizes Your Property’s Potential, Without the Construction Headaches. Planning to add an ADU? The biggest mistake most homeowners make is jumping straight to construction without a professionally designed plan.

Why Design First

Why Professional ADU Architectural Design Matters More Than You Think

Most ADU contractors lead with construction. We lead with design, and there’s a very good reason for that.

Poor ADU planning is the #1 cause of permit rejections, budget overruns, and construction delays in California. When you invest in professional ADU design services first, you set your project up for success from day one.

Our design-first ADU methodology means you spend less time (and money) fixing problems in the field and more time collecting rent or enjoying your new space.

What You Get

When You Invest in Professional ADU Design

Investing in professional ADU design services first means:

A permit-ready plan set that moves through LA City or county review faster
A detailed ADU blueprint design that gives every contractor an accurate bid basis
Space planning that maximizes livable area within California’s 1,200 sq ft limit
An architectural drawing set that protects your investment with documented compliance
A finished product that commands higher rental income because it was designed, not just built

Our Services

Our Accessory Dwelling Unit Design Services

We offer a full suite of ADU design services tailored to every property type, lot size, and lifestyle goal. No two ADUs are the same, and neither is our approach.

Detached ADU Design Los Angeles

A custom detached ADU design in Los Angeles creates a private, fully independent living space separate from the main home. These units are ideal for rental income, guest houses, or multigenerational living for aging parents. Our ADU design Los Angeles team focuses on maximizing backyard space while meeting setback, zoning, and building requirements across Los Angeles and surrounding cities. We incorporate modern architecture with clean design lines, efficient floor plans for both compact and large lots, and energy-efficient layouts that comply with California Title-24 standards. Our detached ADU plans range from approximately 300 sq ft studios to 1,200 sq ft multi-bedroom units, giving homeowners flexible options that increase both functionality and long-term property value.

Garage Conversion ADU LA

A garage conversion ADU in Los Angeles is one of the most cost-effective ways to add livable space without building a completely new structure. Our Garage Conversion ADU LA design services transform underused garages into fully functional, code-compliant living units that can serve as rental apartments, home offices, or in-law suites. We begin with a structural evaluation of the existing garage footprint and develop a smart interior layout that includes a kitchen, bathroom, bedroom, and living area. To maintain the appearance of your property, we also design exterior elevations that match your home’s architecture. Our permit-ready ADU blueprint plans meet the requirements of Los Angeles County, Beverly Hills, Santa Monica, Pasadena, and surrounding communities, ensuring a smoother approval process.

Attached ADU Design Los Angeles

An attached ADU in Los Angeles expands your current home while keeping the new living space connected to the main structure. This option is popular for multigenerational living, rental income, and guest accommodations. Our ADU design Los Angeles specialists carefully analyze the existing home structure to create an addition that blends seamlessly with the original architecture. Through thoughtful space planning and ADU interior design, we create functional layouts that include private bedrooms, kitchens, and bathrooms while maintaining the flow of the main home. The result is a cohesive and efficient attached ADU that enhances both living space and property value.

Junior ADU (JADU) Design California

A Junior ADU (JADU) design in California offers homeowners one of the fastest and most affordable ways to add an accessory dwelling unit. Typically limited to 500 square feet or less, JADUs are ideal for compact independent living spaces within an existing home. Our JADU design services in Los Angeles focus on maximizing functionality in a smaller footprint by incorporating smart storage solutions, efficient kitchenette layouts, and flexible living areas that feel larger than their square footage. By optimizing every inch of space, we create JADUs that provide comfortable living while remaining fully compliant with California and Los Angeles ADU regulations.

Backyard ADU Design Los Angeles

A well-planned backyard ADU design in Los Angeles can transform unused outdoor space into a valuable living unit that generates long-term income and property value. Our design process begins with a detailed property analysis that considers sun orientation, drainage, privacy, and site access before developing the architectural plan. From there, we design efficient layouts and modern structures that complement both the existing home and the surrounding outdoor environment. The result is a thoughtfully designed backyard ADU Los Angeles homeowners can use for rental income, guest housing, or private workspaces, while still maintaining an attractive and functional backyard landscape.

How We Work

Our ADU Design Process: From Concept to Permit-Ready Plans

01 Free ADU Design Consultation

We start with a detailed site analysis and goal-setting session. We assess your lot size, zoning classification, setback requirements, and ADU eligibility under California state law, all before you spend a dollar on design work.

02 ADU Space Planning & Concept Design

Our architects develop multiple ADU layout design options based on your goals, budget, and property constraints. You’ll see floor plan options, square footage breakdowns, and basic exterior concepts before committing to a direction.

03 Detailed ADU Floor Plan Design

Once you select a direction, we develop a fully detailed ADU floor plan design, drawings, interior layouts, window and door placements, kitchen and bath configurations, and structural notes. These are the plans your builder will price and build from.

04 Architectural Drawings & Title-24 Compliance

We produce a complete ADU architectural drawings package, site plan, floor plans, elevations, sections, and all required details for permit submittal. Title-24 energy compliance documentation is included.

05 Permit Submission Support

We assist with permit submission to Los Angeles City Planning, LA County, Beverly Hills, or whichever jurisdiction your property falls in. We respond to plan check corrections and resubmit as needed, keeping your project moving.

Ready to Start Your ADU Project?

Get a clear, itemized ADU design services cost proposal before any work begins.

Transparent Pricing

What Will Your ADU Design Cost?

Transparency is part of how we do business. With 22+ years of ADU design work across Los Angeles County, here’s a clear guide to what design services cost at every level. Every project gets a detailed, fixed-price proposal before any work begins, no surprise invoices.

Entry Level

Concept Design Package

$3,500 – $6,000

Best For: Homeowners exploring feasibility and layout options before committing to full plans

Full Package

Full Design + Permit Package

$8,000 – $15,000

Best For: Most popular choice for LA homeowners, everything needed to break ground, including permits and Title-24

Site feasibility review
Full architectural floor plans
Exterior elevations & sections
Title-24 energy compliance
LA City permit submission
Structural engineering included

Premium

Luxury Custom Design Package

$18,000 – $28,000+

Best For: Homeowners who want truly custom ADU architecture, interior design, engineering & white-glove permit management

Site feasibility review
Fully custom floor plans
Basic concept elevations
ADU interior design package
Full permit management
MEP engineering + soil report

Note: Pricing reflects design-only services. Construction costs are separate and depend on your chosen contractor. Because your design documents give contractors a precise scope, you can solicit multiple competitive bids, which typically saves 15–25% on construction costs.

California ADU Law

California ADU Regulations Every Los Angeles Homeowner Should Know

California has some of the most ADU-friendly laws in the country, but local jurisdictions in Los Angeles, Beverly Hills, and surrounding cities still have their own overlay requirements. Our team stays current on every regulation update so your design is always compliant.

Understanding these regulations is part of what separates a smooth ADU design experience from a costly, delayed one. When you work with our residential ADU design services in Los Angeles, compliance is built into every drawing from day one.

Max ADU Size

1,200 sq ft under state law (local rules may impose lower limits)

Junior ADU Max

500 sq ft, must be within the existing home footprint

Min Setbacks

4 feet from rear and side property lines for detached ADUs

Height Limit

16–25 feet, depending on city and ADU type

Parking

Typically waived within ½ mile of public transit under state law

Owner-Occupancy

Currently suspended under state law; confirm current status with us

Fees

State law limits or eliminates connection fees for ADUs under 750 sq ft

Why Karamia Designs

Why Los Angeles Homeowners Choose Our ADU Design Company

Closet design may seem simple, but small mistakes create long-term frustration.

Design-Only Specialists: No Upsell to Construction

Karamia Designs was founded on a single belief: that great architecture starts with great design, not a contractor’s sales quota. Our entire practice is built exclusively around ADU floor plan design and architectural drawings, delivering deeper expertise, faster turnaround, and zero pressure to use any particular builder.

Local Los Angeles ADU Expertise

We know Los Angeles zoning codes, Beverly Hills building department requirements, and Santa Monica’s ADU approval process inside and out. Our ADU design consultation covers your specific jurisdiction, not a generic California template.

Custom ADU Design: No Cookie-Cutter Plans

Every project starts with your property and your goals. We do not sell pre-drawn plans. Our custom ADU design process produces a plan set engineered for your specific lot, orientation, and structural conditions, which means fewer surprises during construction.

Transparent, Fixed-Price ADU Design Services

We provide a clear, itemized scope of work and fee before any design begins. No hidden fees. No change order surprises. Whether you need affordable ADU design services or a luxury backyard ADU design package, you’ll know exactly what you’re getting before we start.

Trusted by 200+ Los Angeles Homeowners

From first-time ADU owners in Culver City to experienced real estate investors in Pasadena, we’ve helped hundreds of homeowners bring their ADU vision to life. Our clients hire us because they want professional ADU design, not a sales pitch for construction services.

“Every project that leaves our studio carries our name, and we treat it that way.”

Rental Income Strategy

ADU Design for Rental Income: What Layout Works Best?

If your primary goal is generating passive income from your ADU, the design decisions you make upfront directly affect your monthly rent potential. Here’s what our ADU layout design experts recommend for maximum rental appeal in the Los Angeles market:

Highest Demand

Studio or 1-Bedroom ADU

400–600 sq ft

Highest demand from solo renters and couples. Design priority: open-plan living, full kitchen, in-unit laundry

Family & Roommate

2-Bedroom ADU

700–950 sq ft

Ideal for small families or roommate configurations. Design priority: bedroom separation, private entry, storage

Fastest ROI

Garage Conversion ADU

Existing footprint

Fastest ROI for most homeowners. Average rental premium of 15–25% when professionally designed vs. basic conversion

Highest Income Ceiling

Detached Backyard ADU

300–1,200 sq ft

Highest rental income ceiling. Design priority: private outdoor space, dedicated parking, soundproofing details

Service Areas

ADU Design Services Across Greater Los Angeles

Our residential ADU design services are available throughout Los Angeles County and surrounding cities. We regularly work with homeowners across the greater LA area.

Karamia Designs is proudly based in Los Angeles and works exclusively with residential clients across LA County, so when you call us, you’re talking to a local ADU design expert who knows your neighborhood, your city’s building department, and what it takes to get your project approved.

Los Angeles

Silver Lake, Echo Park, West Hollywood, Brentwood, Encino & all neighborhoods

Beverly Hills

ADU floor plan design with Beverly Hills building department expertise

Santa Monica

Silver Lake, Echo Park, West Hollywood, Brentwood, Encino & all neighborhoods

Pasadena

Custom ADU design for Craftsman and Spanish Colonial properties

Culver City

Garage conversion design ADU for income-generating units

Glendale & Burbank

Detached ADU layout planning for mid-size residential lots

Long Beach

Backyard ADU design for large R1 and R2 lots

Torrance & More

Inglewood, El Monte, and surrounding communities

Client Reviews

What Clients Notice the Most

Common Questions

Frequently Asked Questions About ADU Design Services

How much does ADU design cost in Los Angeles?

ADU design services in Los Angeles typically cost $3,500 to $28,000+, with most full design and permit packages ranging from $8,000 to $15,000.

How long does ADU design take before I can start construction?

ADU design and drawings typically take 6–12 weeks, with permit approval adding 8–16 weeks depending on local plan check requirements.

What is included in ADU architectural drawings?

A complete ADU blueprint design package includes site plans, floor plans, elevations, structural, electrical, plumbing, and Title 24 energy compliance documents required for permits.

Can I hire an ADU designer for just the floor plan, not the full package?

Yes, you can start with a modular ADU design consultation, from a concept floor plan to a full permit-ready set based on your budget and timeline.

What is the best ADU layout for a small lot in Los Angeles?

For small lots, L-shaped or linear ADU designs maximize space within setbacks, while garage conversions are often the most practical option when coverage limits are reached.

How do I design an ADU for passive income?

A well-designed rental ADU balances cost, rental income, and maintenance by using durable finishes, efficient layouts, and features like private entry, laundry, and separate utilities.

Do I need a separate designer and contractor for my ADU?

No, but using a design-only firm first gives you complete ADU drawings, allowing you to compare contractor bids and avoid inflated pricing.

What mistakes should I avoid in ADU design?

Avoid ADU design mistakes like designing before confirming lot eligibility, ignoring utility connections, underestimating permit corrections, choosing the wrong floor plan, and skipping Title 24 compliance.

Get Your Custom ADU Design Quote Today

Whether you’re ready to hire an ADU designer now or just starting to explore your options, we’re here to help you make the right decisions from the beginning.

Book your free ADU design consultation and receive: