For Homeowners In California
Get Your Plans Approved Without the Stress, Confusion, or Costly Mistakes
Code compliant architectural plans for ADUs and residential additions. We manage the full permit process through approval so you can move forward with certainty and peace of mind.
The Permit Process Is More Complicated Than Most People Expect
You start with a vision. It starts to feel overwhelming. You are not sure who to trust. And you worry about making the wrong decision.
- You are unsure which company truly understands your city’s rules and worry about choosing the wrong team.
- You fear paying for plans that look good on paper but fall apart during city review.
- You want someone accountable to manage the process, not pass you between vendors or leave you handling the city alone.
Your Project, Properly Led
We Handle the Planning and Permitting So You Do Not Have To
We have seen what happens when projects are rushed, outsourced, or assembled without structure. Plans get rejected. Corrections stack up. Contractors wait. Budgets shift.
That is why California Planning Authority operates differently. We specialize exclusively in residential architectural plans and full permit processing for ADUs, garage conversions, home additions, new Construction and legalizing unpermitted ADUs.
Our role is simple. Designed to code from day one. We coordinate all required documents and specialists, submit to the city, manage every correction, and stay until approved plans are issued.
Clients come to us because they want answers, help, and peace of mind during the planning and permitting phase.
What You Gain When CPA Is Leading Your Plans and Permits
Verified Before Design
Before drawing, we confirm with the city what your property can build so you avoid designing something that gets denied or forced to change.
Specialists in Plans and Permits
We specialize in residential planning and use state of the art technology to reduce mistakes and protect your timeline.
One Team. One Process.
From measurements to final approval, everything is handled under one roof. No bouncing between different vendors.
3 Simple Steps
Step 1 : Schedule
Your Strategy Call
We start with a focused consultation to understand your property, your goals, and what you are trying to achieve.
Step 2 : We Design and Manage Everything
We measure your site, prepare the architectural plans, submit to the city, and handle corrections until approval.
Step 3 : Approved
Plans
Once approved, you can move into construction with clear plans and complete confidence.
10 Reasons Clients Choose CPA
- Your project is led by fully licensed architects, not drafters or students, giving you professional accountability and higher design standards from the start.
- Your approved plans give you control, so if a contractor does not work out, you have the freedom to choose someone else without starting over.
- Homeowners get stronger negotiation power and more competitive contractor bids once you have approved plans in hand.
- State registered and background checked for added accountability.
- We design your plans the way your city expects to see them, because we understand how reviewers think and what they are looking to approve.
- We identify design details early that could increase construction costs and make smart decisions upfront, helping you save money during construction.
- Advanced Lidar site measurements that capture precise on site dimensions using laser technology, reducing measurement errors, preventing costly plan revisions, and helping your project start accurately from day one.
- Everything is coordinated behind the scenes so you are not chasing engineers, consultants, or city departments.
- We keep you informed every step of the way because clear communication matters to us.
- Specialization in residential plans and permit processing only, helping you minimize city corrections from the start.
What You Receive in Every Project
Architectural Plans
- Site visit and measurements
- As-built drawings
- Complete architectural plan set
- Floor plans, Roof plan, Utility plan
- Elevations, Sections
- Foundation and Framing plan
Engineering & Compliance
- Type V prescriptive engineering
- Title 24 energy report
- Green code forms
Permit Management Deliverables
- City application preparation
- City submittal
- Unlimited corrections within design concept
- Full coordination with city departments
Client Support
- Dedicated project coordinator
- Weekly updates
- Bilingual communication
- Approved stamped plans delivered to you
- Contractor referral available when needed
Frequently Asked Questions
Do you build or act as a contractor?
No. We operate exclusively in the planning and permitting phase. Once your plans are approved, you may hire the contractor of your choice.
How long does the permit process take?
Timelines depend on city review cycles, project scope, and corrections required. During your consultation, we outline realistic expectations based on your jurisdiction.
Can you help if I already started with another company?
We evaluate projects case by case. Our focus is on structured planning from the beginning to reduce delays and misalignment.
Why can’t I just have a contractor draw plans?
Some contractors provide drawings, but many projects require detailed coordination of zoning, engineering, energy compliance, and city responses. Incomplete or uncoordinated plans often lead to extended corrections.
What happens during the first consultation?
We take a close look at your property and what you are hoping to build, uncover what may be holding you back, and walk you through what is realistically possible so you can decide your next step with confidence.
Have more questions about ADU plans and permits?
View all ADU permit questions in California
Service Areas
Plans and Permits Across Southern California
California Planning Authority provides complete residential plans and permits across Southern California. Our coverage includes Los Angeles County, Orange County, Ventura County, San Bernardino County, and Riverside County. Each city has its own review habits, and we prepare plans that match what local reviewers expect to see.
