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Millbrae · Building on your lot

Running a business from home in Millbrae

City rule: home businesses need a home occupation permit and a city business license; on-site employees must live in the home.

Key points

  • Home businesses: City rule: home businesses need a home occupation permit and a city business license; on-site employees must live in the home.

Each rule below links to the section of the Millbrae Municipal Code it was read from, with the code text one click away (checked October 2026). General information, not legal advice.

What Millbrae's code says

Millbrae code What Millbrae's code adds
Customer visits
  • No customers may come to the home.
    § 10.05.1910 · code text
    No customers shall come to the dwelling.
  • Only 1 customer at a time.
    Applies: Educational, instructional or consultation activity, by appointment only.
    § 10.05.1910 · code text
    The only exception shall be for an educational, instructional, or consultation activity which is by appointment only and involves no more than one customer at a time;
Employees
  • Employees who work at the home must live there as their primary residence; others must work off site.
    § 10.05.1910 · code text
    The dwelling unit must be the primary residence of the owner of the home-based business, as well as for all employees who work at the dwelling unit, while all other employees, if any, must work off site;
Permit
  • A home occupation permit and a City of Millbrae business license.
    § 10.05.1910 · code text
    No home occupation permit shall be issued without the applicant possessing or simultaneously applying for a city of Millbrae business license.
Businesses not allowed
  • barbershop, beauty salon, massage business, automobile repairing, painting or detailing, medical clinic, dog kennel or other boarding of pets, dog training, recording studio, and similar activities demonstrating the specified impacts
    Applies: Office use at home may be allowed when the service is done entirely off site (mobile pet grooming, mobile dent repair, mobile windshield repair, outcall massage)
    § 10.05.1910 · code text
    Barbershop, beauty salon, massage business, automobile repairing, painting or detailing, medical clinic, dog kennel or other boarding of pets, dog training, recording studio, and other activities considered to be of similar character by the community development director or designee that demonstrate any of the aforementioned impacts; however, certain businesses may be permitted to use the home for office purposes when the service is performed exclusively off site, such as mobile pet grooming, mobile automotive dent repair, mobile windshield repair, and outcall massage.
  • home-based businesses involving hazardous materials or chemicals
    Applies: except very small production businesses such as jewelry making, gift basket arranging, or needlework
    § 10.05.1910 · code text
    Home-based businesses that involve hazardous materials or chemicals, with the exception of very small production businesses such as jewelry making, gift basket arranging, or needlework;

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

Can I run a business from my home in Millbrae?

City rule: home businesses need a home occupation permit and a city business license; on-site employees must live in the home.

General information, not legal advice.

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