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Jefferson County, Missouri Building Codes

Updated : 04/22/2024

Overview

Jefferson County, Mo. adopted the following codes:

  • The International Building Code, 2015 edition. Jefferson, Mo. County Code, § 500.390 (amendments).
  • The International Residential Code, 2015 edition. Jefferson, Mo. County Code, § 500.400 (amendments).
  • TheInternational Existing Building Code, 2015 edition. Jefferson, Mo. County Code, § 500.480 (amendments).
  • The International Energy Conservation Code, 2015d edition. Jefferson, Mo. County Code, § 500.440 (amendments).

Jefferson, Mo. County Code, § 500.010 (codes adopted).

Helpful resources for Jefferson County, Missouri include the following.

Residential Building Code

Missouri has yet to adopt a statewide residential code. Local laws will control.See PLRB, Missouri Building Codes for more information on state level codes.

Jefferson County adopted the 2015 IRC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the model code here.

You can find information about amendments to the model code here.

Auto Search - beta:

See Gen.code(Jefferson County , MO § C-13.2 Building Codes.)

...municipalities and districts that provide for the coordinated adoption of uniform Building Codes procedures for enforcement of Building Codes licensing of contractors are to encourage such intergovernmental agreements in order to provide span classhighlightuniformspan...

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Jefferson County ? No
Citation: TABLE R301.2(1). Delete and insert in lieu thereof the following:
Municipal Code https://www.ecode360.com/27891308
Comments:

Table R301.2(1)

Climatic and Geographic Design Criteria

 

Wind Design

 

Subject to Damage Form

         

Ground Snow Load

Speedd

(mph)

Topo-graphic effectsk

Special wind region1

Wind-borne debris zonem

Seismic Design Cate-goryf

Wea-theringa

Frost line depth b

Ter-mitee

Winter Design Temp a

Ice Barrier Under-layment Re-quiredb

Flood Haz-ardsg

Air Freez-ing Indexl

Mean Annual Tempj

20

115 (51)

NO

NO

NO

C

SEVERE

30

NO

6

NO

 

1,000

55.2

Comments

Jefferson County, Mo. adopted the International Residential Code, 2015 edition. Jefferson, Mo. County Code, § 500.400 (amendments).

  • Ice barrier is not required. Id.
  • Appendix E is deleted and substituted in a modified form. Id.

 

Commercial Building Code

Jefferson County adopted the 2015 IBC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the code here.You can find information about amendments to the model code here.

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. See Gen.code(Jefferson County , MO Municipal Code)

...Adoption not found...

Comments

Jefferson County, Mo. adopted the International Building Code, 2015 edition. Jefferson, Mo. County Code, § 500.390 (amendments).

Other Building Codes

Jefferson County, Mo. adopted the following codes:

  • The National Electrical Code, 2014 edition. Jefferson, Mo. County Code, § 500.460 (amendments) and § 500.470 (Jefferson County Electrical Code amendments).
  • The International Fire Code, 2015 edition. Jefferson, Mo. County Code, § 500.410 (amendments).
  • The International Plumbing Code, 2015 edition. Jefferson, Mo. County Code, § 500.450 (amendments).
  • The International Mechanical Code, 2015 edition. Jefferson, Mo. County Code, § 500.430 (amendments).
  • The International Fuel Gas Code, 2015 edition. Jefferson, Mo. County Code, § 500.420 (amendments).

Jefferson, Mo. County Code, § 500.010.