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Polk County, IA Building Safety: Green Building Code (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing code
IECC as amended by Iowa Building Code Bureau
Local name
Polk County Energy Code
Inspections
third-party required for permitted work
Enforced by
Polk County Building Official
Effective date
September 2, 2024
Exemption
certain amusement/water-park seasonal buildings
Penalty
misdemeanor/infraction under Chapter 2

Summary

Unincorporated Polk County builds to the International Energy Conservation Code as adopted and amended by the Iowa State Building Code Bureau, rebranded locally as the Polk County Energy Code under Construction Code § 20.2.1(.5). Any permitted work must pass third-party energy inspections before it can be covered up.

City-specific rules exist: Des Moines has its own green building code rules that differ from Polk County's county-level regulations. If you live in Des Moines, check the city-specific page instead.

.5 Section 101.4.6 Energy. Section 101.4.6, Energy, of the IBC, is hereby deleted and there is enacted in lieu thereof the following section: The provisions of the International Energy Conservation Code as currently adopted and amended by the Iowa State Building Code Bureau shall apply to all matters governing the design and construction of buildings for energy efficiency. Administration shall be as prescribed in "this Code' and these regulations shall be known as the Polk County Energy Code. Construction or work for which a permit is required shall be subject to third party inspections. The Building Official is authorized to accept reports of approved inspection agencies, provided such agencies satisfy the requirements as to qualifications and reliability. Any portion that does not comply shall be corrected and such portion shall not be covered or concealed until authorized by the Building Official.

Full Breakdown

6, Energy, and replaces it: the International Energy Conservation Code, as currently adopted and amended by the Iowa State Building Code Bureau, governs the design and construction of buildings for energy efficiency in unincorporated Polk County, administered under Chapter 20 and called the Polk County Energy Code. Construction or work requiring a permit must undergo third-party inspections, and the Building Official may accept reports from approved inspection agencies that meet qualification and reliability standards; any noncompliant portion of the work must be corrected and cannot be covered or concealed until the Building Official signs off.

2 for seasonal structures: food-service buildings at amusement parks, water parks and outdoor sporting facilities with at least 40% of their exterior wall space in operable openings, and the restroom facilities serving those same venues, which may run heating or cooling equipment for patron and staff comfort during operating hours despite not meeting the energy code. 4, and is enforced by the Polk County Building Official the same as any other Chapter 20 provision.

Violations & Fines

Energy code violations fall under amended IBC § 114.4, Violation penalties: anyone who violates a Chapter 20 provision, fails to meet its requirements, or builds contrary to approved plans or a Building Official directive is subject to the fines and penalties set in Chapter 2, Issuance of Citations and Imposition of Civil Penalties for Violation of County Ordinances. The Building Official can also post a written stop-work order under amended IBC § 115.2 halting all work on the property until the energy-code deficiency, or any other Code violation, is corrected.

Frequently Asked Questions

What energy code applies to new homes in unincorporated Polk County?
The International Energy Conservation Code as adopted and amended by the Iowa State Building Code Bureau applies to every building's energy design and construction. Polk County administers it under Chapter 20 and refers to it locally as the Polk County Energy Code, per § 20.2.1(.5).
Do I need a special inspection for energy code compliance?
Yes. Any construction or work that requires a permit is subject to third-party inspections under § 20.2.1(.5). The Building Official can accept a qualified, reliable inspection agency's reports, but any part that fails must be fixed before it is covered or concealed.
Are any buildings exempt from the Polk County Energy Code?
A narrow exception under § 20.2.1(.6) covers seasonal food-service buildings at amusement parks, water parks and outdoor sporting facilities with 40% or more operable exterior wall openings, plus the restroom facilities at those venues, which may run heating or cooling during operating hours.
What happens if construction fails to meet the energy code?
It is a violation under amended IBC § 114.4, subject to Chapter 2's civil citation and penalty process, and the Building Official can issue a stop-work order under § 115.2 that stops all work until the deficiency is corrected and re-inspected.

Sources & Official References

Other rules in Polk County

All Polk County rules

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