Beaverton, OR Accessory Structures: Tiny Homes (2026)

R101.2.3.2 Matters preempted by the state building code. The following matters are not adopted, are preempted by the state building code and may not be adopted by a local municipality:

1. Appendix A (Sizing and Capacities of Gas Piping).

2. Appendix B (Sizing of Venting Systems Serving Appliances Equipped with Draft Hoods, Category I Appliances, and Appliances listed for use with Type B Vents).

3. Appendix C (Exit Terminals of Mechanical Draft and Direct-vent Venting Systems).

4. Appendix D (Recommended Procedure for Safety Inspection of an Existing Appliance Installation).

5. Appendix G (Piping Standards for Various Applications).

6. Appendix I (Private Sewage Disposal).

7. Appendix J (Existing Buildings and Structures).

8. Appendix L (Permit Fees).

9. Appendix M (Home Day Care—R-3 Occupancy).

10. Appendix N (Venting Methods).

11. Appendix O (Automatic Vehicular Gates).

12. Appendix P (Sizing of Water Piping System).

13. Appendix Q (Tiny Houses).

14. Appendix T (Solar-ready Provisions—Detached One- and Two-family Dwellings and Townhouses). R101.2.4 Appendices. The following appendices are adopted as part of the Oregon Residential Specialty Code:

1. Appendix E (Manufactured Housing Used as Dwellings).

2. Appendix F (Radon Control Methods).

3. Appendix H (Patio Covers).

4. Appendix K (Sound Transmission).

5. Appendix R (Light Straw-clay Construction).

6. Appendix S (Strawbale Construction).