Los Angeles County ADU Guide

Agoura Hills

The City has approved a Pre-Approved ADU Plans Program, with designs offered in cottage, ranch and Spanish styles.

Official source verified 2026-08-16Official jurisdiction resource ↗
01 / Plan path

Choose the right production starting point.

The City has approved a Pre-Approved ADU Plans Program, with designs offered in cottage, ranch and Spanish styles.

Express PlanStarting at $4,500

For a qualifying jurisdiction preapproved plan adapted into the property-specific architectural production set.

Custom PlanStarting at $6,500

For an original floor plan and architectural production set developed around the property and homeowner.

02 / Size + fee checkpoints

Size affects more than floor area.

The City has modified its ADU regulations for compliance with state law. Confirm the current objective standards with the Planning Division before design.

Fees require confirmation with Community Development. Note that a property with a recorded covenant, deed restriction or agreement restricting use may not use a structure as a short-term rental.
500 SFConfirm school-fee assessment rules750 SFState impact-fee protection checkpoint1,000 SFTwo-bedroom state minimum allowance1,200 SFCommon local upper-range checkpoint
03 / Site conditions

Property conditions can change the path.

  • Whether a pre-approved plan suits the lot
  • Very High Fire Hazard Severity Zone status
  • Hillside and grading conditions
  • Oak tree protection
  • Objective design standards
04 / Consultant screen

Likely disciplines to evaluate.

  • Structural engineering
  • Title 24 energy documentation
  • Survey where boundaries or topography require it
  • Geotechnical, civil or arborist review when triggered

Consultants are retained only when required by the property, design, or reviewing agency. Their proposals and coordination are separate from the architectural production fee unless stated otherwise in the agreement.

05 / Property-specific next step

Turn the guide into a preliminary project report.

Enter the address to screen jurisdiction, mapped constraints, likely agencies, drawing requirements, consultants, and the preliminary fee path.

Check the property →Email Bennett Design Studio →
Important: This guide is general planning information, not a zoning determination, permit approval, fee quote, or guarantee of feasibility. Current parcel records, adopted codes, agency interpretations, utility requirements, site investigation, and written agency confirmation control.