Residential Architectural Plans & Building Permits in California
Fast, Accurate Permit-Ready Plans
From custom homes to ADUs to major additions - get complete, permit-ready plan sets designed and delivered by professionals and industry experts, with all architectural, design, and engineering services handled in-house.
[01 What We Do]
We handle every step of the design and permitting process in-house, so nothing falls through the cracks. With EHDM, you get turnkey design and permitting, from concept to city approval. We provide services in all California jurisdictions including Los Angeles County, Orange County, Ventura County, and more.
[02 Project Types]
Residential Projects We Design
From modern custom houses to garage conversions, we deliver precise and code compliant plans that are ready for plancheck and permit approval.
Custom Home Design
Build your dream home from the ground up with our complete custom home design services. We create architectural plans tailored to your lifestyle. Full design package includes site planning, architectural drawings, structural engineering, energy compliance, and permit-ready documentation for new construction.
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Accessory Dwelling Units
Design and permit a new backyard home with our complete ADU services. We create plans for detached units, attached ADUs, and garage conversions—all tailored to maximize rental income or provide independent living for family. Our ADU packages include architectural design, structural engineering, Title 24 energy compliance, and expedited permit processing for all California jurisdictions.
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Home Additions
Expand your living space with custom additions designed to match your home's architecture. We create plans for room additions, second story expansions, and master suite retreats. Our addition services include foundation design, structural engineering for existing home integration, roof framing, and complete permit documentation. Perfect for growing families or adding value to your property.
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Home Remodeling
Transform your existing home with comprehensive remodeling plans from whole house renovations to kitchen and bathroom updates. Our remodel designs include new floor plans, structural modifications, updated electrical and plumbing systems, and modern finishes. We handle all architectural drawings, engineering calculations, and permit coordination for projects of any size.
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Kitchen & Bath Remodeling
Upgrade the heart of your home with professional kitchen and bathroom remodeling plans. Whether you're reconfiguring layouts, removing walls, or creating a spa-like master bath, our designs include structural modifications, updated electrical and plumbing systems, and modern finishes. Complete architectural drawings and permit documentation ensure your remodel meets all building codes and safety requirements.
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[03 Our Work]
[04 Workflow]
No guesswork, just a clear path from ideas → results.
[05 The Design-Build Advantage]
[06 Ideal For]
Design and permitting services structured for projects where professional coordination and regulatory accuracy are essential.
Homeowners planning additions, remodels, or new construction who need professionally prepared, permit-ready drawings
Investors and developers managing residential or small commercial projects requiring predictable approval timelines
ADU clients seeking code-compliant designs and streamlined city approvals
First-time builders who require technical guidance throughout the design and permitting process
[07 Why Choose Us]
Single Point of Contact: No more playing "telephone" between your architect and your engineer.
Faster Turnaround: By eliminating the need for outside consultants, we cut weeks off the design phase.
Accurate Budgeting: Because our engineers are involved early, our designs are optimized for real-world construction costs.
Transparent Pricing: No hidden change orders. We provide detailed estimates upfront.
280+
Completed Projects
6+
Years of Exerience
100%
Satisfaction Guarantee
We’re not just here to make things look good - we’re here to make them work. From residential remodels to commercial build-outs, we deliver a seamless path from concept to construction.
[08 Testimonials]
[09 FAQ]
How long does the permitting process take?
It varies by city and project type, but our coordinated process minimizes delays and typically reduces review cycles.
Can EHDM guarantee my permit will be approved?
While no one can guarantee a permit, our in-house, fully coordinated team maximizes your chance of first-time approval.
Do you work with ADUs and home additions?
Yes — ADUs, additions, remodels, and ground-up homes are our specialty.
What cities do you serve?
We serve all of Southern California, including Los Angeles, Ventura, Orange County, and surrounding areas.
Do you handle plan check comments and revisions?
Yes. All plan check comments are reviewed, addressed, and revised internally by our architectural and engineering team. This ensures fast turnaround times and avoids miscommunication that can occur when revisions are outsourced.
Will you submit the plans to the city for me?
Yes. EHDM prepares and submits permit packages directly to the appropriate city or county departments and coordinates with plan check officials throughout the review process.
What types of projects do you handle?
We specialize in residential additions, remodels, ADUs, and ground-up new construction, as well as select small commercial projects. Each project is evaluated to ensure it aligns with our full-scope design and permitting approach.
What happens after permits are approved?
Once permits are issued, approved drawing sets are ready for construction. EHDM can continue supporting the project through construction coordination or transition seamlessly into the build phase for design-build projects.
