Listing of States and Jurisdictions with RRNC Codes

Building codes are intended to protect the health, safety, and welfare of homeowners and residents by establishing minimum construction standards. Read a Primer on Building Codes. Building codes also provide uniformity in the construction industry. Building codes embrace all aspects of construction. They set minimum standards for materials, structural elements, fire prevention, plumbing and sanitation, radon reduction, and the electrical and mechanical systems in a home. Building codes are adopted by a legislative body, then enacted to regulate building construction within a particular jurisdiction, such as a township, city, county, or state. Read how your municipality, county, or state can choose to adopt a code (or standard) that covers radon-resistant new construction, authored by one of several organizations. Learn more about code adoption.

To the best of EPA’s knowledge, the list of jurisdictions by state represents the state and local codes that require the use of radon resistant construction techniques in new homes.

Note: These codes were in force in the jurisdictions named as of February, 2009. Links to state web sites, policies and codes are provided as were available at the time of the data collection, we intend to update this information periodically (last updated on June 20, 2011). If you have information about regulations in your state or your jurisdiction that relate to radon resistant new construction techniques that are not on this list, or if you believe that this list contains inaccurate information, please write to us at rrnc@epa.gov.

Tools You Can Use

Building Codes: A Primer

List of State Building Code Associations

Listing of State and/or Local Jurisdictions that have RRNC Codes

Builder/Contractor Resources

Contact Your State Radon Coordinator, Find More State-by-State Resources

Find RRNC Training

All homes should be tested for radon. Find a qualified service provider near you.

Who Has What

Twenty-five (25) States and three (3) Districts/Territories DO NOT have statewide or local jurisdictions that have RRNC Codes.
AK, AZ, AR, CA, CT, DE, DC, GA, GU, HI, IN, KY, LA, MA, MS, MO, NV, NH, NC, ND, PR, SD, TX, UT and VT

Four (4) states DO have statewide RRNC Codes, but local jurisdictions must adopt them.
Florida | Maine | Rhode Island | Virginia

Find Your State

AK | AL | AR | AZ | CA | CO | CT | DC | DE | FL | GA | HI | IA | ID | IL | IN | KS | KY | LA | MA | MD | ME | MI | MN | MO | MS | MT | NC | ND | NE | NH | NJ | NM | NY | NV | OH | OK | OR | PA | PR | RI | SC | SD | TN | TX | UT | VA | VT | WA | WI | WV | WY

Alabama
State of Alabama	No Statewide code for RRNC
City of Decatur	Adopted IRC Appendix F in 2002. All new single and two-family dwellings must include a passive system.
City of Falkville and Hartselle	Adopted IRC Appendix F in 2003. All new single and two-family dwellings must include a passive system.
City of Muscle Shoals and Sheffield	Adopted IRC Appendix F in 2005. All new single and two-family dwellings must include a passive system.

State of Colorado	No Statewide code for RRNC
City of Aspen	Adopted Appendix F 2003 IRC for all new residential construction and additions. www.aspenpitkin.com/depts/41/bldg_policies.cfm
City of Fort Collins	Adopted IRC Appendix F with local amendment in 2005 and extended RRNC requirements to multi-family dwellings in 2008. All new single and multi-family dwellings must include a passive system. See Fort Collins Municipal Code section 5-30 (102) for single-family and section 5-27 (45) for multi-family requirements. Commercial dwellings comply with 2006 International Building Code radon standards. www.colocode.com/ftcollins/municipal/chapter5.htm
Cities of Sterling, Golden, Trinidad, La Veta, Longmont, Ridgway, and Walsenburg. Counties of Hinsdale, Boulder, Logan, Archuleta, Huerfano, Pitkin and Las Animas.	Require RRNC per Appendix F of the IRC

State of Florida	In July 1995, Florida adopted the "Florida Standard for Passive Radon-Resistant New Residential Building Construction" as mandated in Part X, Chapter 553, Florida Statutes.
	Standard is not mandatory and must be adopted by local jurisdictions, but can be exceeded as well; (1)Florida Statutes Ann. § 404.059 (2)Florida Statutes Ann. § 553.98 http://infosolutions.com/icce/gateway.dll/Florida Florida State RRNC Codes
Charlotte County	Appendix F of IRC adopted; Article IV, Building Regulations, Sec. 3-2-66
Seminole County	Radon-Resistant Building Standards adopted; Code of Ordinances, Part 4, Building Code; Ord. No. 73-10, § 50, 8-28-73; Ord. No. 73-10A, § 2(a), 11-19-73)
City of Dunnellon	Radon-resistant building mandatory for new construction; Division 1, Generally, Section 98-138; (Code 1985, § 22-48)
City of Hialeah Gardens	Enforcing the Radon Resistant New Construction annex in the Florida State Building Code
City of Jacksonville	Construction in passive radon area limits; Part I, Administration; Sec. 8-2; (Ord. No. 01-112, § 1, 7-10-01)
City of Lauderdale Lakes	Enforcing the Radon Resistant New Construction annex in the Florida State Building Code
City of Miami	Appendix F of IRC adopted; Article I, Administration; Sec 8-2
City of Pensacola	Radon resistant construction standards adopted; Code of Ordinances, Article I. In General, Sec. 14-1-3. (Ord. No. 19-02, § 1, 9-12-02)
City of Sanibel (Sanibel Island)	Radon-Resistant Building Standards adopted; Code of Ordinances, Article V. Standards, Sec. 14-211. (Code 1981, § 7-56; Ord. No. 97-18, §§ 1, 2, 11-4-1997; Ord. No. 00-17, § 1, 8-1-2000)
City of St. Augustine	Radon-Resistant Building Accepted as standard; Article II, Adopted Building Codes, Sec 8-105-108

State of Idaho	No statewide code for RRNC
Blaine County	Ordinance Number 20004-05 established the adoption of Appendix F of the IRC in December 2004. www.co.blaine.id.us/Planning (PDF)
City of Tetonia	Ordinance no. 2003-1 established the adoption of IRC Appendix F in March of 2003, with Sections G2406.2 (303.3) 3-4; G2443 (620); and Chapters 26-42 omitted. www.tetoniaidaho.org/cityordinance

State of Illinois	No statewide code for RRNC
Kendall County	Adopted Appendix F 2003 IRC
City of Batavia	Effective January 1998, incorporated radon-resistant construction provisions into its building codes www.healthpolicyguide.org/doc.asp?id=5972
City of Elgin	Adopted IRC Appendix F in 2005 City of Elgin RRNC Codes (PDF)
City of East Moline	Effective November, 17, 1997, East Moline, Illinois, adopted a radon-resistance provision into its building code to control radon levels in new construction of one- and two-family dwellings and other new residential buildings three stories or less in height. East Moline is located in a Zone 1-high radon potential area. To promote the regulation, East Moline offers a Zone 1 Credit that allows for $150 to be discounted from the building permit fee. www.healthpolicyguide.org/doc.asp?id=5972
City of Geneva	Effective January 1998, incorporated radon-resistant construction provisions into its building codes www.healthpolicyguide.org/doc.asp?id=5972
City of Montgomery	New houses = radon ventilation system; Code of Ordinances, Article I. In General, Sec. 6-14; (Ord. No. 1149, § 1, 10-25-04)
City of Niles	Radon resistant construction required if needed; Code of Ordinances, Article II, Building Codes, Sec 18-27, (Ord. No. 2005-06, § 2, 3-22-05)
City of North Aurora	Effective January 1998, incorporated radon-resistant construction provisions into its building codes www.healthpolicyguide.org/doc.asp?id=5972
City of Plainfield	Crawl spaces and basements shall have a vapor barrier.; Code of Ordinances, Division 2. One and Two Family Dwelling Code, Sec. 2.5-35; (Ord. No. 1858, § I, 6-7-99; Ord. No. 1872, § I, 7-26-99)
City of St. Charles	Effective January 1998, incorporated radon-resistant construction provisions into its building codes City of St. Charles Radon Regulations (PDF)
City of Sterling	Appendix F, Radon Controlled Methods adopted; Code of Ordinances, Division I, Generally, Sec 18-29, (Code 1982, § 6-19; Ord. No. 99-8-17, § I, 8-17-99; Ord. No. 2004-5-14, § II, 5-17-04)
City of Streator	Appendix F, Radon Control Methods adopted; (Ord. 2004/05-42 § 1 (part))
City of Yorkville	Adopted IRC Appendix F

State of Iowa	No statewide code for RRNC
Johnson County	Adopted 2003 IRC Appendix F (2004)
Muscatine County	Winter 2007 adopted 2006 IRC, Appendix F; previously operated under 2000 IRC, which was originally adopted in 2004.
Shelby County	In August 2004, Ordinance 2004-3 outlined RRNC requirements in the county. www.shco.org/2004-3.htm
City of Coralville	Adopted IRC 2003, Appendix F all residential buildings
Cities of Harlan and Muscatine	IRC Appendix F
City of Iowa City	Ordinance No. 02-4033 passed in 2002 adopts Appendix F of the IRC. www.icgov.org/site/ (PDF)
City of North Liberty	Adopted IRC, including Appendix F (July 2005). Mandatory for all new residential buildings to include a passive system.

State of Kansas	No Statewide code for RRNC
City of Manhattan	Adopted IRC Appendix F
City of Topeka	In June 2006 Ordinance No. 18657 created RRNC requirements for construction in Zone 1 areas. The ordinance is a modfication of IRC Appendix F. City of Topeka RRNC Codes (PDF)
The City of Lawrence	Adopted IRC Appendix F. City of Lawrence City Codes (PDF)

State of Maryland	Md. Public Safety Code §§12-503, 504. Go to the Code page Md. Admin. Code §05.02.07.04(C)(1) Go to the Code page
Baltimore County	Adopted IRC 2003, Appendix F, and currently in the process of switching to IRC 2006
Frederick County	In April 2002, adopted IRC Appendix F with minor local amendment Fredrick County RRNC Codes
Howard County	Radon control methods prescribed in Appendix F, shall apply to the construction of a new residential building; Code of Ordinances, Subtitle I: Building Code, Section 3.102; (C.B. 47, 2000; C.B. 16, 2001; C.B. 53, 2004; C.B. 4, 2005, § 2)
Montgomery County	IRC 2003 Appendix F
Washington County	Ordinance enacted on July 26, 2005 to adopt 2003 IRC including Appendix F, Radon Control Measures. Guidance for RRNC for Zone 1 designation as determined by locally available data or Figure AF101 (EPA Radon Zone Map), but not mandatory in county. Washington County RRNC Codes
City of Rockville	In 1995, Rockville, Md., adopted and amended its one- and two-family dwelling code. This regulation requires radon mitigation in newly constructed detached and semi-detached single-family dwellings and townhouses (single family dwellings attached side to side). The requirement also includes basement and ground floor additions to existing dwellings, as well as conversions of grade-slab garages, carports, porches, etc. to living space. www.healthpolicyguide.org/doc.asp?id=5972

State of Nebraska	No statewide code for RRNC
Cities of Hastings, McCook, Carol, Madison, Norfolk, Pender and Stanton	Enforces IRC Appendix F
City of Wayne	Enforces passive radon resistant new construction techniques as part of building code

State of New Jersey	New Jersey Department of Environmental Protection (DEP) N.J.A.C. 5:23-10 requires that all buildings of use Group E and R as defined by the building sub code must be built using RRNC if they are in Tier 1 municipalities as listed in the sub code.
	Applies to 8 municipalities: Greenwich Township, Hardyston Township, Mine Hill Township, Pilesgrove Township, Washington Township, Woolwich Township, Riverdale Borough, Swedesboro Borough. A municipality is defined as Tier 1 if 25% or more of the homes tested in the municipality have radon concentrations of 4 pCi/L or higher.
	26:2D-80 -- The Department of Community Affairs is authorized to enter into an agreement with a public or private agency to carry out testing for radon gas and radon progeny at the sites of residential dwellings, the construction of which is in progress or commences on or after the effective date of this act, and to provide funding for that testing, provided that each $1.00 of that funding is matched by $1.00 from other public or private sources. NJ Radon Hazard Subcodes (PDF) www.njradon.org

State of New York	No statewide code for RRNC
City of Caledonia	Radon Control Methods adopted: Local Law No. 2 of the Year 2000 Radon Control Methods Section 95-100 through 95-103.11
City of Lima	Radon Control Methods adopted: Local Law No. 1 of the Year 2000 Radon Control Methods Chapter 200

State of Ohio	No statewide code for RRNC
City of Canal Winchester	Adopted IRC Appendix F
City of Dublin	Title XV, Chp. 150, § 0.001 in Dublin’s Code of Ordinances establishes the adoption of IRC Appendix F www.amlegal.com/nxt/

State of Oregon	Oregon has adopted the 2009 IRC Appendix F with certain modifications for R-3 occupancies.
	In addition, we have adopted a new section 1812 in the Oregon Structural Specialty Code (OSSC) using Appendix F as a model. The OSSC is based on the 2009 IBC. This was done at the direction of the Oregon legislature for listed counties and specific to R-3 and R-2 residential occupancies with an effective date of April 1, 2011. Radon mitigation measures are also required for all new public buildings effective April 1, 2013. The legislature directed the Building Codes Division to adopt these standards as of January 1, 2011. Link to the backgrounder and code sections adopted - www.bcd.oregon.gov/notices/Adopted_Rules/2011/010111_Radon_pr.pdf
Counties of Baker, Clackamas, Hood River, Multnomah, Polk, ashdngdon and Yamhill	Adopted 2009 IRC Appendix F Read the Citation Additional counties may be added as specified in Chapter 83, 2010 Oregon Laws (Senate Bill 1025), Section 2.

Commonwealth of Virginia	Authorizes state to promulgate a Uniform State-wide Building Code. Enforces the radon-resistant new construction provision; Virginia Code Ann. § 36- 98. The 2003 Edition of the Virginia Construction Code (effective 11/16/05) requires group R-3 and R-4 structures to meet requirements of Appendix F of IRC Virginia State RRNC Codes (PDF)
State of Virginia - 2000 Uniform Building Code	R329.1. General. Following official action under Article 7 (§ 15.2-2280 et seq.) of Chapter 22 of Title 15.2 of the Code of Virginia by a locality in areas of high radon potential, as indicated by Zone 1 on the U.S. EPA Map of Radon Zones (IRC Figure AF101), such locality shall enforce the provisions contained in Appendix F. Exemption: Buildings or portions thereof with crawl space foundations which are ventilated to the exterior, shall not be required to provide radon-resistant construction. www.dhcd.virginia.gov/BFR/PDFs (PDF)
Rockbridge County	Amended the Land Development Regulations, Section 802, Zoning and Building Permit Procedures, to add 802.02-3 (g) Radon Resistant Construction, as a provision for all new one and two family dwellings constructed in the County, in accordance with R329.1 of the Uniform Statewide Building Code, October 25, 2004.
Shenandoah County	Adopted IRC Appendix F
City of Blacksburg	Radon-resistant construction required for climatic and geographic design; Code of Ordinances, Article II, Uniform State-wide Building Code, Section 6-208

State of West Virginia	No statewide code for RRNC
Berkeley County	Berkeley County’s Building Code Ordinance revised June of 06 adopted IRC Appendix F. Building Code Ordinance (DOC)
Jefferson County	On May 15 2006, adopted a building code enforcement ordinance resolution to adopt IRC Appendix F effective October 2006 Jefferson County RRNC Codes (PDF)

Listing of States and Jurisdictions with RRNC Codes

Tools You Can Use

Who Has What

Find Your State

Area Navigation