Small House Specialty Code: Oregon HB243

Small House Specialty Code: Oregon HB243

Adopts Small Home Specialty Code to regulate construction of homes

Not more than 400 square feet in size Effective October 1st, 2019

Written By Janet Thome
Photo: Oregon Cottage Company

”Small House Specialty Code” – Means the specialty code adopted under section 2 of this 2019 act. It means a code of regulations adopted under ORS 446.062, 446.185, 447.020 (2), 455.020 (2),455.496, 455.610, 455.680, 460.085, 460.360, 479.730 (1) or 480.545 or section 2 of this 2019 Act.

Section 2 Of HB243 : Including But Not Limited To  Appendix Q

1) As used in this section, “small home” means a single family residence that is not more than 400 square feet in size.(2) Not withstanding ORS 455.020 and 455.030, the 2018 International Residential Code, including  but not limited to Appendix Q of that code, is adopted as a Small Home Specialty Code applicable to the construction of a small home.

Summary

  • Requires amendment of Low-Rise Residential Dwelling Code to provide that Small Home Specialty Code supersedes conflicting provisions of Low-Rise Residential Dwelling Code.
  • Authorizes municipal building official to alter, modify or waive specialty code requirements for small home if strict adherence to Small Home Specialty Code is impractical or infeasible.
  • Requires that building permits and zoning permits for small home designate small home as single family project.
  • Requires that certificate of occupancy for small home allow occupancy only for residential use as single family dwelling.
  • Specifies application of fire sprinkler head and fire sprinkler system design criteria to small homes.
  • Authorizes municipal building official to allow increased detection and occupant notification in lieu of fire sprinkler head or fire sprinkler system.
  • Requires that small home be built with listed heat detector unit alarm or listed photoelectric smoke alarm.
  • Sunsets Small Home Specialty Code and small home fire sprinkler design , heat detector and smoke alarm provisions on January 2, 2026.

Text Bill HB243

Enrolled

Hi Janet,

Oregon Reach Code:  No Longer Applies

Thank you for the call. On and after October 1, the Reach Code path and the R329 ORSC amendments (temporary rule) are no longer applicable or available. As you correctly pointed out, links to the Reach Code have been removed from our website. Starting October 1st HB 2423 will become effective. Thus, the bill creates the “Small Home Specialty Code” that governs the construction of “small homes” which are defined as not more than 400 square feet in size.

The local building department where the home is to be located is the best resource for any specific local requirements to be discussed. I encourage you to reach the local building officials for specific small home projects and policies.

A copy of HB 2423 can be located on the legislature’s website: Oregon State Legislature

Local building department contact information can be located on the division’s website:Locate A Building Department

I hope this information is helpful.

I’ve copied our technical team for consistent communication purposes.

Francisco Ramos Building Code Specialist|Policy & Technical Services

Oregon Department of Consumer & Business Services|Building Codes Division

Office: 503-373-7542 Website

Francisco Ramos-Building Code Specialist-Policy And Technical Services

 Oregon Revised Statute (ORS) 197.493: Placement And Occupancy Of Recreational Vehicle

1) A state agency or local government may not prohibit the placement or occupancy of a recreational vehicle, or impose any limit on the length of occupancy of a recreational vehicle, solely on the grounds that the occupancy is in a recreational vehicle, if the recreational vehicle is:

(a) Located in a manufactured dwelling park, mobile home park or recreational vehicle park;

(b) Occupied as a residential dwelling; and

(c) Lawfully connected to water and electrical supply systems and a sewage disposal system.

(2) Subsection (1) of this section does not limit the authority of a state agency or local government to impose other special conditions on the placement or occupancy of a recreational vehicle. [2005 c.619 §12]

Note: See note under 197.492 (Definitions for ORS 197.492 and 197.493).

Article Source Oregon Laws.Org

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