Movable Tiny House as ADU

Los Angeles (City), California


Name Movable Tiny House as ADU
Municipality Los Angeles (City)
Zoning Districts All residential zones with a proposed or existing dwelling unit(s) on the lot – Some restrictions for Very High Fire Hazard and Hillside Areas
Effective Date 01/01/2020
Municipal Code LAMC Section 12.22A.33
Code Link
Authority Department of Building and Safety


The City’s Accessory Dwelling Unit (ADU) Ordinance (Ord. No 186,481) was adopted on December 11, 2019 and became effective on December 19, 2019.  It added Los Angeles Municipal Code (LAMC) Section 12.22 A.33.  This new section of the LAMC includes local development standards and incorporates certain state law development standards and requirements for ADUs in Government Code (GC) Sections 65852.2.

An ADU is an attached or detached residential dwelling unit that provides complete independent living facilities for one or more persons and is located on a lot with a proposed or existing primary residence. It shall include permanent provisions for living, sleeping, eating, cooking and sanitation on the same lot as the single family or multifamily dwelling is or will be situated.

A Movable Tiny House (MTH) is defined in LAMC Section 12.03 as: An enclosed space intended for separate, independent living quarters of one family and meets the following requirements:

  • Is licensed and registered with the California Department of Motor Vehicles,
  • Meets the American National Standards Institute (ANSI) 119.5 requirements or the National Fire Protection Association (NFPA) 1192 standards and is certified for ANSI or NFPA compliance. A 3rd party inspection agency (Design Approval Agency/Quality Assurance Agency) shall certify the MTH meets this requirement (List of approved 3rd party Design Approval Agencies (DAA) and Quality Assurance Agencies (QAA),
  • Cannot move under its own power,
  • Is no larger than allowed by California State Law for movement on public highways, and
  • Is no smaller than 150 and no larger than 430 square feet as measured within the exterior faces of the exterior walls.

MTHs are permitted through a ministerial process in all zones which allow for any type of residential use and where there is a proposed or existing dwelling unit (or units) on the lot subject to the additional restrictions and limits in 12.22 A33(c)(4) for Very High Fire Hazard Severity Zones and Hillside Areas.

Key Contacts

Board of Building and Safety Commissioners
201 North Figueroa Street, Suite 1030
Los Angeles, CA 90012
(213) 473-3231


Updated:  Loran – February 2021

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Building Code — Legislation that speaks to how to construct a tiny house.

Zoning Code — Legislation that speaks to how the lot will be used.


ADU — Accessory Dwelling Unit

DMV — Division of Motor Vehicles

IB — Industrialized Buildings

IRC — International Residential Code

PUD — Planned Unit Development

RV — Recreational Vehicle

SF — Single Family Dwelling

T — Transitional Housing

UDO — Unified Development Ordinance

Please Suggest a Correction if you find broken links or misinformation.

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