For Homeowners in California

ADU Plans and Permits Done Right from Day One

Residential plans and full permit management for ADUs, garage conversions, and home additions, prepared in line with city requirements.

State Registered  |   Background Checked   |   12+ Years of Experience   |   Residential Plans and Permit Specialists

Most Homeowners Start With Questions Like These

  • Who can I actually trust to guide me through this process?
  • How do I know if someone really understands the city rules?
  • What if I hire the wrong company and waste time or money?
  • Why do some projects get stuck in permits for months?
  • How do I avoid costly mistakes before construction even starts?


Many homeowners start by speaking with companies that promise fast results before fully understanding the property or city requirements.

City rules and permit processes are complex and often misunderstood.

Understanding what your property allows first helps prevent these costly mistakes.

Residential Plans and Permit Processing Specialists

California Planning Authority focuses exclusively on residential plans and permits. Services include:

  • ADU plans
  • JADU Plans
  • Garage conversion plans
  • Home addition plans
  • New construction plans
  • Full permit processing and city coordination

We design according to city code, prepare the architectural plans, and manage the permit process through final approval.

Homeowners and builders can then move forward with construction with clear, approved plans.

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 hoping 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.

Start with a simple conversation

Complete Plans Designed for City Approval

The planning package typically includes:

  • Site measurements using precision laser technology
  • Site plan and full property layout
  • Floor plans and roof plans
  • 3D visualization of the project
  • Utility planning
  • Elevations and sections
  • Structural framing and foundation plans
  • Title 24 energy reports
  • Green code compliance documentation
  • City corrections and permit follow up

Designed for Approval and Peace of Mind

California Planning Authority focuses on getting plans approved the right way from the beginning. Benefits include:

  • Plans designed specifically for city approval
  • Clear drawings contractors can build from
  • Reduced risk of costly plan revisions
  • Permit coordination handled from start to finish
  • Guidance through a complex city process

Start With a Property Analysis

Many homeowners reach out because they want to understand what their property may allow before moving forward.

After submitting the form:

  1. A member of our team will call you to learn a little about your property and the project you are considering.

  2. We ask a few questions so we can understand what you are hoping to accomplish.

  3. If it looks like the project may be viable, we schedule a site visit to assess the property.

This conversation simply helps determine the right next step before investing in full architectural plans.

Start with a simple conversation

Understand Your Property Before Making Decisions

Before moving forward with plans or construction, many homeowners want to know what their property actually allows. Starting with a property analysis helps clarify options and avoid costly mistakes later.