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Trusted Drafting Services in Los Angeles County
Streamline Design & Permitting is proud to offer expert residential drafting services along with commercial services, code compliance consulting, and building permit assistance.
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Latest Projects
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See how we turn ideas into detailed, permit-ready plans that make projects smoother and properties more functional. Our drafting team helps homeowners and builders bring their concepts to life while meeting all local requirements.
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About
Your Trusted Drafting Company in Los Angeles County
Planning a remodel, ADU, or new construction in Los Angeles County? Make sure you partner with the right team. Streamline Design & Permitting delivers comprehensive drafting services for homeowners, developers, and business owners across Los Angeles County. Our drafting company makes the process seamless, delivering accurate, permit-ready plans that meet all local requirements.
Our team includes experienced architects, designers, and a dedicated project manager who oversee every phase of your project. At our architectural firm, we handle detailed draft plans, code compliance, and building permits, while providing clear cost projections to help you plan confidently.
Want to see your project visually? We also offer 3D CAD design services near me to help clients visualize their projects before construction begins. Once your plans are approved, we’ll connect you with trusted contractors to bring your vision to life.
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Our Trusted Builders
Our Services
From ADUs to Custom Homes: Services We Provide
Streamline Design & Permitting delivers drafting services from small updates to large-scale builds. We create precise, permit-ready plans, including CAD drafting, that bring your ideas to life while ensuring every detail meets city and county standards.
Accessory Dwelling Units (ADUs)
We draft plans for a variety of buildings such as detached units, garage conversions, basement apartments, and second-story suites. We’ll help you create a functional ADU that meets all local requirements.
Whole-Home Remodeling
Our detailed construction drawings cover everything from bathroom reconfigurations to open-concept kitchens, ensuring your renovation is documented and ready for construction.
We manage each remodeling job with careful attention to client needs and project requirements.
Home Additions
From cozy home offices to master suites, we prepare blueprints for seamless expansions, whether you’re building up or out.
Clients can request customized plans and detailed estimates for their home addition projects.
Custom Home Design
Allow us to turn your vision into comprehensive technical drawings, designing every element — from spacious great rooms to efficient kitchens.
This service is perfect for clients who want to design every square inch of their dream home.
Commercial Tenant Improvements
Our team drafts precise plans for professional spaces, including medical offices, retail shops, and more, turning empty interiors into thriving businesses.
Code Compliance
We review as-built drawings to catch issues early and ensure they meet all current building codes.
Building Permits
We handle the paperwork and approvals to ensure your project progresses without delays.
Need As-Built Drawings? Contact Us for a Free Quote.
Contact Streamline Design & Permitting today and take the first step toward smooth, stress-free permitting and drafting services. We’re here to answer all your questions during the consultation process.
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Los Angeles County’s ADU Requirements
Los Angeles County, including the City of LA, follows California state law and municipal standards (LAMC §12.22 A.33, Ordinance 186,481) for Accessory Dwelling Units (ADUs), Junior ADUs (JADUs), and certain Movable Tiny Houses (MTHs). Key Los Angeles City ADU requirements include:
- Permitted locations: ADUs, JADUs, and eligible MTHs may be built on lots with a primary single- or multi-family dwelling. No minimum lot size applies.
- Quantity allowed: Owners of single-family dwellings can add up to two ADUs (including a JADU). Multi-family properties may add units based on existing structures.
- Size limits: Detached ADUs up to 1,200 sq ft; attached ADUs up to 1,200 sq ft or 50 percent of the main home; JADUs up to 500 sq ft. MTHs must range from 150–430 sq ft.
- Height and stories: One- or two-story ADUs allowed, with a minimum height that is typically about 16 ft.
- Setbacks and separation: At least 4 ft from rear and side property lines; detached ADUs must be 6 ft from the main home.
- Parking: No parking for conversion ADUs or JADUs. One space required for new ADUs unless within ½‑mile of transit or otherwise exempt.
- Building standards: Must comply with zoning, building, and residential codes. Solar panels are required for detached ADUs. MTHs must meet ANSI/NFPA standards, DMV registration, and certification rules.
Turn Your Ideas Into Detailed Plans
Get expert drafting services that make your next project seamless from concept to approval.
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Process
The Drafting Process: How We Bring Your Vision to Life
At Streamline Design & Permitting, our experienced drafters simplify every stage of the design process so you can move forward with confidence:
- 01
Initial Consultation & Planning
Turning your project goals into a clear, actionable design roadmap.
- 02
Design Development
Creating precise, code-compliant drafts optimized for space, function, and style.
- 03
Specialist Collaboration
Coordinating with engineers, surveyors, and consultants to refine your plans.
- 04
Permit Preparation
Managing all documents and submittals for smooth approval with city and county agencies.
- 05
Project Finalization
Finalizing deliverables and agreements so construction can start without delays.
Why Us
Why Clients Trust Our Drafting Expertise
Streamline Design & Permitting stands out as one of Los Angeles County’s most trusted drafting companies, delivering where others fall short.
Problem-Solving Expertise
We provide creative, compliant solutions for challenging sites and projects others consider unworkable.
Proven Results
A strong portfolio of approved plans and successful builds backs our experience.
Regulatory Insight
We understand local codes inside and out, leveraging that knowledge to keep your project moving.
Reliable Timelines
We respect your schedule with accurate timelines and consistent communication.
Transparent Value
Our drafting services average just 3–4 percent of total project costs, giving you expert results at fair market rates.
Each consultation shows you exactly why developers, homeowners, and business owners throughout Los Angeles County trust our architectural team.
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Take the First Step Toward Accurate, Permit-Ready Plans
Schedule your free consultation today, and see how our detailed, code-compliant drafts move your plans smoothly through the approval process.
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FAQ
FAQ on Drafting Services in Los Angeles County
- 01
What is an unpermitted structure in Los Angeles?
It’s not allowed to own, use, or live in a building that hasn’t been properly permitted. An “unpermitted structure” is any building — or part of one — that was built, remodeled, expanded, moved, connected to utilities, or otherwise altered without first getting the required permits from the Building Official, as outlined in Section 106.1. This also applies to projects where a permit was issued but has since expired before the work was completed.
- 02
How much do drafting services cost in Los Angeles?
It depends on several factors, but as a general rule of thumb, most drafting projects cost between 3–4 percent of the total construction budget, depending on complexity. Rest assured that we offer clear cost estimates upfront, so you know exactly what to expect before we begin your plans.
- 03
What’s the largest structure I can build without a permit in Los Angeles?
In most cases, you can build a detached structure under 10 square meters (108 square feet) without a permit, as long as it isn’t attached to another building, isn’t connected to utilities, and doesn’t exceed 4.3 meters (14.1 feet) in height.