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Boulder County, CO Home Business: Zoning & Home Occupation Permits (2026)

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

Key Facts

Code
BCLUC Article 4-516(S)
Employees
Residents plus one employee
Floor area
Max one-half of dwelling
Character
Subordinate to residence
Excluded uses
Restaurants, vehicle repair, boarding

Summary

The Boulder County Land Use Code lets a home occupation operate as an accessory use to a residence, provided it stays clearly subordinate to the dwelling and does not change the character of the lot. Article 4-516(S) sets the limits on employees, floor area, traffic, and signage.

City-specific rules exist: Longmont, and Boulder have their own zoning & home occupation permits rules that differ from Boulder County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

A home occupation is an accessory use consisting of a vocational activity conducted inside a dwelling unit or its accessory structures, and used only by the individuals who reside therein and one employee.

Full Breakdown

Under the Boulder County Land Use Code, a home occupation is "an accessory use consisting of a vocational activity conducted inside a dwelling unit or its accessory structures, and used only by the individuals who reside therein and one employee." The use must be "clearly subordinate to the use of the lot for dwelling purposes and does not change the character of the lot," cannot exceed one-half the total floor area of the dwelling, and cannot include outside storage of goods, materials, or equipment. Nursing homes, restaurants, vehicle repair businesses, and boarding houses do not qualify. These standards apply only to unincorporated Boulder County; cities set their own home-business zoning.

Violations & Fines

A home business that exceeds these limits loses its accessory-use status and becomes a zoning violation subject to a notice of violation and land-use enforcement.

Frequently Asked Questions

Can I run a business from my county home?
Yes, as an accessory home occupation subordinate to your residence, using no more than half the dwelling's floor area and no outside storage, per BCLUC 4-516(S).
What businesses can't be home occupations?
Nursing homes, restaurants, vehicle repair businesses, and boarding houses do not qualify as home occupations in unincorporated Boulder County.

Sources & Official References

Other rules in Boulder County

All Boulder County rules

How Boulder County compares: Easiest Cities to Run a Home Business·Compare Boulder County to another location·View the Colorado home business overview

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