- (541) 850-6300
- April 27, 2026
Addition Building & Design Inc.
Description
Addition Building & Design Inc. is a Los Angeles-based design-build firm specializing in residential construction, custom homes, home additions, ADUs, and large-scale renovations. By combining architectural planning, structural design, permitting, and construction management under one roof, the company provides homeowners with a streamlined and fully coordinated building experience.
Their integrated design-build approach is intended to simplify complex residential projects while maintaining clear communication, organized project management, and consistent oversight from concept through completion.
Full-Service Design-Build Construction
Addition Building & Design Inc. operates with a single-point-of-responsibility model, meaning clients work with one coordinated team throughout the entire project lifecycle.
Their services include:
- Architectural planning and design
- Structural engineering coordination
- Permit processing and expediting
- Residential construction management
- Renovations and additions
- ADU and guest house construction
- Outdoor living design
This approach helps reduce the challenges homeowners often face when managing separate architects, contractors, and consultants independently.
Custom Home Construction
For clients building new homes, Addition Building & Design Inc. manages every stage of custom residential development.
Their custom home services include:
- Ground-up home construction
- Custom floor plan development
- Modern open-concept layouts
- Hillside and difficult lot construction
- Fire-resistant construction strategies
- Permit coordination and project tracking
The company has experience working with complex Los Angeles site conditions, including sloped terrain and structurally demanding hillside properties that require specialized planning and engineering solutions.
Home Additions and Major Renovations
Addition Building & Design Inc. also specializes in expanding and transforming existing homes through carefully planned additions and remodels.
Their renovation services may include:
- Second-story additions
- Structural home expansions
- Whole-home remodeling
- Primary suite additions
- Great room expansions
- Kitchen remodeling
- Bathroom redesigns
Projects are designed with attention to architectural continuity so that new additions integrate naturally with the original structure.
ADU and Guest House Construction
As an experienced ADU contractor in Los Angeles, Addition Building & Design Inc. designs and builds accessory dwelling units that add functionality and long-term value to residential properties.
Their ADU services include:
- Detached ADUs
- Guest houses
- Backyard cottages
- Granny flats
- Property expansion planning
- ADU permit coordination
The company manages both the design and construction process while helping homeowners navigate California’s ADU permitting requirements and zoning regulations.
Outdoor Living and Exterior Enhancements
In addition to interior construction, Addition Building & Design Inc. creates outdoor living environments designed for the Southern California lifestyle.
Outdoor projects may include:
- Custom swimming pools and spas
- Water features
- Covered patios and trellises
- Deck construction
- Outdoor kitchens and BBQ areas
- Fire pits and entertainment spaces
Their design process considers structural integrity, site conditions, and indoor-outdoor flow to create cohesive exterior spaces that complement the home.
A Structured and Transparent Project Process
Addition Building & Design Inc. emphasizes communication, transparency, and organization throughout each project.
Their process focuses on:
- Coordinated planning and design
- Real-time project oversight
- Permit management
- Construction scheduling
- Client collaboration
- Streamlined decision-making
This structured system is intended to help projects move efficiently while minimizing confusion and delays.
Tuesday: 7:00AM - 7:00PM
Wednesday: 7:00AM - 7:00PM
Thursday: 7:00AM - 7:00PM
Friday: 7:00AM - 7:00PM
Saturday: 7:00AM - 7:00PM
Sunday: 7:00AM - 7:00PM
Location
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