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Arapahoe County, CO Building Safety: Electrical Permits (2026)

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

Key Facts

Governing section
LDC § 1-7.D
Rule
Current code edition applies at permit date
Jurisdiction
Unincorporated Arapahoe County only
Also covers
Fire, plumbing, and mechanical codes
Permit office
PWD Building Division

Summary

Unincorporated Arapahoe County ties every electrical permit to whichever edition of the applicable electrical code is in effect on the day the permit is applied for. LDC § 1-7.D requires all projects to comply with each applicable fire, plumbing, electrical, and mechanical code as currently adopted: overriding even projects built under an older, grandfathered land-use approval.

City-specific rules exist: Centennial, and Aurora have their own electrical permits rules that differ from Arapahoe County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

D. REQUIRED COMPLIANCE WITH GENERALLY APPLICABLE BUILDING CODES. All projects must comply with all regulations and codes that are general in nature and are applicable to all property subject to the jurisdiction of Arapahoe County, including the International Building Code, as adopted and amended by Arapahoe County; regulations, standards, and specifications adopted by the County to govern wastewater disposal, road and bridge construction; and each applicable fire, plumbing, electrical, and mechanical code, in effect on the date a permit is applied for pursuant to each of those codes.

Full Breakdown

LDC § 1-7 sets the County's transition rules for the Code's August 15, 2019 rewrite, including a general rule letting a building with a permit issued before that date finish under its original approval. ' In practice this means an electrical permit application is measured against whichever electrical code Arapahoe County has adopted and amended as of the date that specific permit is applied for, not the code in effect when an older land-use approval was granted. The LDC's Chapter 7 definitions describe the County's adopted construction standard generically as 'The Uniform Building Code of Arapahoe County,' but the Land Development Code text does not itself print the electrical code's edition year, amperage tables, or inspection schedule; those live in the separately adopted Building Code, outside the LDC's zoning and land-use chapters.

Electrical permit applications in the unincorporated County are processed, like building and fence permits, through the County's PWD Building Division. A; incorporated cities such as Aurora, Centennial, Littleton, and Englewood issue electrical permits under their own adopted codes.

Violations & Fines

LDC § 1-7.D makes compliance with the currently adopted electrical code mandatory for every permit application, regardless of any earlier, grandfathered land-use approval. Because § 1-4.B separately makes it unlawful to alter a structure without first obtaining a permit, unpermitted electrical work is enforceable under the County's Title 30 police powers (LDC § 1-2), which include the power to abate nuisances and to require correction before final inspection or occupancy.

Frequently Asked Questions

Which electrical code applies to a permit in unincorporated Arapahoe County?
LDC § 1-7.D ties every application to 'each applicable... electrical... code... in effect on the date a permit is applied for,' so the version that controls is whichever edition Arapahoe County has adopted as of the day you file, not an older edition tied to a prior approval.
If my subdivision was approved years ago under an older permit, can I skip the current electrical code?
No. LDC § 1-7.D overrides the general grandfather rule for 'regulations and codes that are general in nature,' expressly listing the electrical code among those that apply based on the date each permit is applied for, regardless of an older land-use approval.
Does Arapahoe County's electrical code apply inside Aurora or Centennial?
No. The Land Development Code applies only to unincorporated Arapahoe County under LDC § 1-4.A. Aurora, Centennial, Littleton, Englewood, and the county's other incorporated cities adopt and enforce their own electrical codes and issue their own electrical permits.

Sources & Official References

Other rules in Arapahoe County

All Arapahoe County rules

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Electrical Permits in Cities Across Arapahoe County