california-adu

Determine applicable ADU regulations in California using a decision tree.

Updated Mar 25, 2026
One-click install
npx skills add https://github.com/ruiming2ai/GB-MEP-Drawing-Review --skill california-adu-ruiming2ai
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: california-adu
Source: https://github.com/ruiming2ai/GB-MEP-Drawing-Review/tree/main/Archive%20%28Not%20Used%29/2026-03-25%20CrossBeam/adu-skill-development/skill/california-adu
Command: npx skills add https://github.com/ruiming2ai/GB-MEP-Drawing-Review --skill california-adu-ruiming2ai

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires HCD, local city/county ordinances, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill provides comprehensive guidance and decision-making support for ADU (Accessory Dwelling Unit) regulatory compliance in California, simplifying the process and ensuring compliance with state laws and local ordinances.

Core Features & Use Cases

  • Comprehensive ADU Regulations: Covers all aspects of ADU regulations, including setbacks, height, size, parking, permitting, fees, and ownership.
  • Decision Tree Router: Step-by-step guidance to determine applicable regulations based on the ADU type, construction, and situational modifiers.
  • Quick-Reference Thresholds: Provides key numbers and thresholds for common ADU queries.
  • Reference File Catalog: Access to a detailed catalog of all reference files for in-depth information.
  • Use Case: When planning an ADU in California, use this Skill to quickly determine the applicable regulations, understand the requirements, and ensure compliance with state and local laws.

Quick Start

Use the california-adu skill to determine the applicable regulations for an ADU on a single-family lot in a coastal zone.

Frequently Asked Questions about california-adu

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
What are the California ADU setback, height, and size regulations for my property?

California ADU regulations require specific setbacks, height limits, and size maximums based on lot size and ADU type. This Skill uses a decision tree to evaluate your property's situational modifiers and determines the exact thresholds needed for compliance.

How do I determine which ADU permitting and parking requirements apply to my lot?

ADU permitting and parking requirements vary by lot type and location, such as coastal zones. This Skill routes your specific ADU type and construction scenario through a step-by-step decision tree to identify the exact applicable state and local rules.

Do I need to check local city ordinances or just HCD resources for ADU compliance?

ADU compliance requires reviewing both California HCD resources and local city or county ordinances. This Skill integrates both dependency layers to provide comprehensive regulatory guidance tailored to your specific jurisdiction.

How do I navigate ADU ownership and fee regulations in California?

Navigating ADU ownership and fee regulations involves understanding specific state-mandated thresholds and local fee structures. This Skill provides a reference file catalog and decision tree to clarify ownership restrictions and permissible fee assessments.

What are the limitations of using a decision tree approach for ADU regulatory compliance?

A decision tree approach for ADU regulatory compliance relies on accurate inputs regarding your ADU type and construction modifiers. Limitations include potential gaps in highly specific local city ordinances that may require manual verification beyond the standard HCD guidelines.

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