Hollywood ADU & Home Addition Architects
Top Rated Architects in Hollywood, CA
Designing Spaces.
Defining Lifestyles.
At I Arch Studios, every project begins with a vision — your vision. Founded on the belief that great design should be both beautiful and functional, we’ve dedicated ourselves to creating spaces that reflect how people truly live. From ADUs and remodels to new custom homes, our approach combines creativity, precision, and local expertise.
Our Architectural Services
ADU Design & Permits
We specialize in Hollywood ADU design, helping homeowners create functional and stylish accessory dwelling units that comply with local zoning and building codes.
General Services
As experienced architects in Hollywood, CA, we offer full-service solutions for ADUs, home remodels, new construction, and SB9 lot splits.
Remodels
Thinking of renovating your home? Our team has completed numerous Hollywood home remodels, from kitchen upgrades to full second-story additions.
Local Knowledge
With in-depth knowledge of Hollywood zoning laws and permit processes, I Arch Studios makes it easy to get your project approved and built.
Soft-Story Retrofits
Soft-story retrofits strengthen existing buildings with weak or open ground-floor areas, helping improve structural stability and seismic performance while meeting Los Angeles retrofit requirements.
Permit-ready architectural plans for ADUs, garage conversions, SB9 projects, and residential additions throughout Hollywood and Central Los Angeles.
Get Started on Your Hollywood Project Today
Contact us today to get started on your Hollywood ADU project or residential design in Hollywood
Architectural Design & Permit Expertise in Hollywood
Homeowners throughout Hollywood work with iArch Studios for practical architectural planning, permit-ready drawings, and guidance through the Los Angeles permitting process. Our team regularly coordinates with LADBS and understands the zoning, permitting, and site-specific challenges commonly found throughout Central Los Angeles neighborhoods.
Many Hollywood properties feature compact lots, multifamily buildings, detached garages, hillside conditions, and older residential structures that require thoughtful planning before construction begins. We help homeowners navigate zoning reviews, engineering coordination, utility planning, and city plan check corrections while creating residential designs tailored to each property.
From ADUs and garage conversions to second-story additions and SB9 projects, our goal is to help projects move efficiently from concept to permit approval with realistic timelines and organized coordination throughout the process.
ADU & Garage Conversion Design in Hollywood
Hollywood continues to see growing demand for ADUs, garage conversions, and residential additions as homeowners look for ways to maximize property value and create additional living space throughout Los Angeles.
- Detached ADUs
- Attached ADUs
- Garage Conversions
- Hillside Additions
- Second-Story Additions
- Multifamily ADUs
Many homes throughout Hollywood, nearby West Hollywood, and surrounding Central Los Angeles neighborhoods feature detached garages, alley access, and underutilized rear yard space that may provide strong opportunities for ADU development. Properties located near transit corridors may also qualify for parking exemptions under California ADU regulations depending on site location and project scope.
Our team works closely with homeowners to maximize usable square footage while considering setbacks, utility coordination, parking requirements, privacy, grading concerns, and neighborhood compatibility throughout the design process.
SB9 Lot Split & Duplex Opportunities
California SB9 regulations may create new opportunities for qualifying single-family properties throughout Hollywood to add additional residential units or pursue urban lot split opportunities. Depending on the zoning, lot dimensions, hillside conditions, and existing site layout, homeowners may be able to maximize underutilized properties through duplex conversions or additional development.
Our team provides preliminary zoning analysis, feasibility studies, site planning, and architectural design services for SB9 projects throughout Los Angeles. We evaluate setbacks, access requirements, utility coordination, grading considerations, and existing structures before moving into the design process.
- Preliminary Feasibility Analysis
- Lot Split Planning
- Duplex Conversions
- Site Planning & Layouts
- Zoning & Code Review
- Permit Coordination
Common Design & Permitting Challenges in Hollywood
Properties throughout Hollywood often present unique architectural and permitting challenges due to compact lot layouts, hillside terrain, older residential structures, multifamily conditions, and limited parking access.
- Hillside & Sloped Lots
- Alley Access
- Older Foundations
- Parking Constraints
- Utility Coordination
- Multifamily Property Conditions
- LADBS Plan Check Corrections
- Irregular Lot Configurations
Identifying potential site limitations early in the planning process can help reduce delays during permitting and construction. Our team regularly works through zoning reviews, engineering coordination, hillside considerations, and LADBS correction comments throughout Los Angeles residential projects.
Frequently Asked Questions
Architectural fees in Los Angeles and surrounding cities (Glendale, Burbank, Pasadena) typically range from 5%–10% of the total construction cost for residential projects. For smaller projects like ADUs or garage conversions, some architects may offer a flat-rate design package. Hiring an architect ensures your plans meet city code and pass permit approval smoothly.
Adding an ADU (Accessory Dwelling Unit) or a home addition in Los Angeles often increases property value based on the average price per square foot in your neighborhood. For single-family homes and properties with fewer than four units, an ADU not only raises resale value but can also generate rental income, making it one of the best investments for California homeowners.
Most architectural projects in California follow these stages:
Consultation & Site Analysis – reviewing property conditions, zoning, and project goals.
Rough Design – initial sketches and layout concepts.
Design Development – refining the floor plans, elevations, and materials.
Prepare Documents – preparing detailed plans for permits and builders.
Permit Submittal – submitting to LADBS (Los Angeles Department of Building & Safety) or your local city’s planning department.
Construction Administration – optional, where your architect coordinates with contractors during the build.
In Los Angeles, Glendale, and Burbank, plan check approval usually takes 3–6 months. Timelines may be longer if your property is in a Historic Preservation Overlay Zone (HPOZ), hillside area, or near utility easements. Working with an experienced architect can speed up approvals by submitting a complete, code-compliant set of plans.
A wall can be removed only if it’s not load-bearing. Load-bearing walls support the roof, ceiling, or floor above and require a new beam or structural support to replace them. An architect or structural engineer in Los Angeles can determine if your wall is load-bearing and prepare safe, permit-ready plans for removal.
You can check eligibility for SB9 lot splits or duplex projects in Los Angeles by using the ZIMAS (Zone Information & Map Access System) tool or your city’s zoning map. Properties in very high fire zones, historic overlays, or environmental restrictions may not qualify. A licensed architect can review your parcel and confirm if SB9 applies to your property.
Under California state law, every single-family property has the right to build an ADU up to 800 sq. ft., even if local zoning would otherwise restrict it. In Los Angeles, detached ADUs can be as large as 1,200 sq. ft., depending on Residential Floor Area (RFA) limits. Glendale and Burbank also follow California ADU law but may enforce local design standards.
Always check with a local architect to confirm the latest ADU regulations for your city.
Los Angeles – Two-story ADUs are allowed if they meet height limits (generally up to 25 ft. for detached units).
Glendale – Detached ADUs are limited to single-story, though attached conversions may be possible.
Burbank – A second story is usually permitted only above an existing structure, such as a garage.
