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Douglas County, NE Accessory Structures: Shed & Carport Rules (2026)

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

Shed permit rules in Douglas County, NE, also referred to as storage shed, backyard shed, or accessory building regulations, set size limits, setbacks, and when a building permit is required.

Key Facts

Size limit
20% of the rear yard
Habitation
Prohibited in accessory buildings
Build order
Main building must start first
Permit step
Signed non-conversion agreement required
Where filed
Douglas County Register of Deeds

Summary

In unincorporated Douglas County, a shed or other accessory building can't exceed 20% of the rear yard, can't be lived in, and needs a signed non-conversion agreement before a building permit issues.

City-specific rules exist: Omaha has its own shed & carport rules rules that differ from Douglas County's county-level regulations. If you live in Omaha, check the city-specific page instead.

a. No accessory building shall be constructed upon a lot until construction of the main building has commenced. b. Accessory buildings shall not be used for human habitation or occupancy. d. Accessory building size shall be limited to no more than 20% of the rear yard. e. All applicants for accessory structure building permits shall sign a non-conversion agreement. That non-conversion agreement shall be filed with the Douglas County Register of Deeds prior to issuance of a building permit.

Source: Douglas County Environmental Services – Zoning RegulationsView official code

Full Breakdown

Douglas County's zoning regulations cap accessory building size at 20% of the rear yard and bar any accessory building from human habitation or occupancy. Construction can't start until the main building is already underway, and exterior materials/design must match the primary structure. Before Environmental Services issues a building permit, the applicant must sign a non-conversion agreement, which is recorded with the Douglas County Register of Deeds. These rules apply only outside Omaha, Bennington, Valley, Waterloo and Ralston, each of which has its own code.

Violations & Fines

Building without the required non-conversion agreement or over the 20% rear-yard size cap can hold up or void the building permit; occupying an accessory building violates § 6.02(A)(7)(b).

Frequently Asked Questions

How big can a shed be on my Douglas County lot?
No more than 20% of your rear yard, per § 6.02(A)(7)(d). There's no flat square-footage cap in the ordinance: it scales with your lot.
Can I build a shed before my house is built?
No. Section 6.02(A)(7)(a) bars any accessory building until construction of the main building has commenced.
Does this apply if I live in Omaha?
No. These are county zoning regulations for unincorporated Douglas County only; Omaha, Bennington, Valley, Waterloo and Ralston enforce their own codes.

Sources & Official References

Other rules in Douglas County

All Douglas County rules

How Douglas County compares: Shed Permit Requirements by City·Compare Douglas County to another location·View the Nebraska accessory structures overview

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