//San Diego County, California

How to start and grow a business in San Diego County.

A straight, practical guide to registering your business, getting the right permits, and actually finding customers in San Diego County. Every official link you need is below, plus where to get free help. No fluff, no hard sell.

Starting a business in San Diego County? The official steps and source links are below.

Already operating or launching with budget in place? You can also

San Diego County is home to roughly 3.3 million people across 18 cities, and several distinct economies stacked on top of each other. There is the life-sciences and biotech cluster around Torrey Pines, the deep defense and military presence from the Navy and Camp Pendleton, the tourism engine of the beaches, Balboa Park, and the harbor, the cross-border trade of the South Bay, and a celebrated craft-beer scene. That variety is why so many people start something here, and why the rules differ from city to city.

This page is the part most marketing sites skip: how to actually open your doors. The county, the state, and your specific city each have a role, and doing the steps in the right order saves you weeks. Below is the full sequence with links straight to the official sources, the trades that need extra permits, and the free local programs that will help you for nothing. The part about getting found by customers comes at the end, once you are legal and open.

//The sequence

How to start a business in San Diego County, step by step.

This is the order that works for most new businesses. Requirements vary by entity, location and industry, so use the city, county and state sources below to confirm what applies to yours.

1
Find out who licenses your address
Each of San Diego County's 18 cities licenses the businesses inside it, and the county's Business Licenses page links to all of them. The City of San Diego is different: it issues a Business Tax Certificate through the City Treasurer instead of a license. The county says no business license is needed in unincorporated areas, though other rules and permits may apply; County Planning & Development Services handles zoning there: (858) 694-8985.
County of San Diego: Business Licenses County of San Diego: Planning & Development Services
2
Pick a structure and register the business
Form an LLC or corporation with the California Secretary of State through bizfile Online, or stay a sole proprietor. If you use a name that is not your legal name, file a fictitious business name (DBA) statement with the San Diego County Assessor/Recorder/County Clerk within 40 days of starting business. It costs $54 for the first name and registrant, plus $5 for each additional, and because it needs an original signature it is filed in person or by mail. Publish it within 45 days of filing, once a week for four consecutive weeks in a newspaper of general circulation.
CA Secretary of State: bizfile Online San Diego County Assessor/Recorder/County Clerk: Fictitious Business Name
3
Get your free EIN and any seller's permit
The IRS says you generally need an EIN to hire employees or to operate a partnership or corporation. It issues the number online, immediately if approved, and never charges for it. If you sell or lease goods that would ordinarily be subject to sales tax, you also need a seller's permit from the CDTFA, which does not charge for it but may ask for a security deposit.
IRS: Get an EIN CDTFA: Seller's permit
4
Get your city business license or tax certificate
This is the step that changes most by city. The City of San Diego's Business Tax Certificate is $34 a year for 12 or fewer employees, plus the $4 state fee. Carlsbad's minimum license is $34 with three to four weeks of processing, Oceanside approvals take about 15 days, and Chula Vista renewals are due January 31. The free checklist lists the offices of five cities, and the city guides below walk through each one.
County of San Diego: Business Licenses
5
Confirm zoning and pull any industry permits
Before you sign a lease, confirm the use is allowed at the address with your city's planning office, or County Planning & Development Services in unincorporated areas. If you sell or serve food: Every retail food facility, including vending vehicles and caterers, needs a public health permit from the County of San Diego Department of Environmental Health and Quality, and state law requires plans approved before any new construction or remodeling. The county's Plan Check unit reviews plans submitted online: plnchk@sdcounty.ca.gov. For other permits, GO-Biz offers permitting and regulatory help for any size company.
County of San Diego DEHQ: Food Program County of San Diego DEHQ: Food Plan Check GO-Biz: Permit & Regulatory Assistance
6
Report business equipment to the Assessor
The Assessor mails Business Property Statements in January, and they are due April 1; after May 7 a 10% penalty applies. Smaller businesses with steady values may get an Important Assessment Notice instead, returned only if something changed. If nothing arrives by early March, contact the Assessor, because not receiving a statement does not excuse filing: (858) 505-6100.
San Diego County Assessor: Business Personal Property
7
Check the $800 California tax rules for your entity
Every California LLC owes the $800 annual tax, even in a year it does no business, until it is cancelled. Corporations owe an $800 minimum franchise tax, but newly incorporated or qualified corporations do not pay it in their first taxable year.
Franchise Tax Board: LLC $800 annual tax Franchise Tax Board: Corporation minimum tax
8
Use the free help that already exists
The San Diego & Imperial SBDC offers no-cost, one-on-one business consulting and low-cost training for new and existing businesses across San Diego and Imperial counties. Use it before you pay a consultant.
San Diego & Imperial SBDC (free advising)

//Free San Diego County checklist

Take the steps with you.

Get the San Diego County business checklist with the city, county, state and federal source links in one place, including the licensing offices of five cities and what applies in unincorporated areas. We keep the source page dated so you can see when it was last checked.

//City guides

Start-a-business guides for San Diego County cities.

San Diego
Business Tax Certificate steps and the life-sciences, defense, and tourism economy.
Chula Vista
License steps and the fast-growing South Bay and bayfront market.
Oceanside
License steps and the North County coastal and military market.
Carlsbad
License steps and the tech, tourism, and action-sports market.
Escondido
License steps and the inland retail, arts, and agriculture market.

//Common questions

Things we get asked first.

Do I need a business license in San Diego County?

It depends on where the business is. Each of the county's 18 cities licenses the businesses inside it, and the City of San Diego issues a Business Tax Certificate instead. The county says no business license is needed in unincorporated areas, though other rules and permits may apply, and the county and state add registrations on top, such as a DBA or a seller's permit.

Source: County of San Diego, Business Licenses

How do I register a business name in San Diego County?

If you use a name that is not your legal name, file a fictitious business name (DBA) statement with the San Diego County Assessor/Recorder/County Clerk within 40 days of starting business. It costs $54 for the first name and registrant, plus $5 for each additional, and because it needs an original signature it is filed in person or by mail. Publish it within 45 days of filing, once a week for four consecutive weeks in a newspaper of general circulation.

Source: San Diego County Assessor/Recorder/County Clerk, Fictitious Business Name

How do I open a restaurant in San Diego County?

Beyond your city license or tax certificate, every retail food facility needs a public health permit from the County of San Diego Department of Environmental Health and Quality. Plans for a new or remodeled facility go to the county's Plan Check unit online, and state law requires them approved before construction. Inspections are graded: points come off 100, an A means 90 to 100, and the grade card is posted near the public entrance.

Sources: County of San Diego DEHQ, Food Program and Food Plan Check

Do I have to file a business property statement?

If the Assessor mails you one, yes. Statements go out in January and are due April 1, and after May 7 a 10% penalty applies. Smaller businesses with steady values may get an Important Assessment Notice instead, which you return only if something changed. Questions: (858) 505-6100.

Source: San Diego County Assessor, Business Personal Property Services

What is the $800 California tax people forget about?

Every California LLC owes the $800 annual tax, even in a year it does no business, until it is cancelled. Corporations owe an $800 minimum franchise tax, but newly incorporated or qualified corporations do not pay it in their first taxable year.

Source: Franchise Tax Board, Limited liability company

Where can I get free help starting my business?

The San Diego & Imperial SBDC offers no-cost, one-on-one business consulting and low-cost training for new and existing businesses across San Diego and Imperial counties. Use it before you pay a consultant.

Source: San Diego & Imperial SBDC

//Already operating?

The marketing question starts after the filing question.

If the business is already open, or the launch is funded, tell our founders what you want to change. We will look at the business before recommending SEO, paid media, the website or anything else.

For operating businesses and funded launches with budget available to act on the plan.

//Bookmark these

Official San Diego County and California resources.

Every link here goes straight to a government or nonprofit source. These are the agencies that actually issue your registrations and permits, so go to them directly rather than a paid middleman.

County of San Diego: Business Licenses
Links to the license office of each of the county's 18 cities. No business license is needed in unincorporated areas, though other permits may apply.
County of San Diego: Planning & Development Services
Building permits, land use and zoning for the unincorporated areas. Zoning: (858) 694-8985.
San Diego County Assessor/Recorder/County Clerk: Fictitious Business Name
$54 for the first name and registrant, plus $5 for each additional. Filed in person or by mail; publish within 45 days. (619) 237-0502.
County of San Diego DEHQ: Food Program
Every retail food facility, including vending vehicles and caterers, needs a public health permit. An A grade means 90 to 100.
County of San Diego DEHQ: Food Plan Check
Plans for new or remodeled food facilities and mobile food units, submitted online. Questions: plnchk@sdcounty.ca.gov.
San Diego County Assessor: Business Personal Property
Statements are mailed in January and due April 1; a 10% penalty applies after May 7. (858) 505-6100.
San Diego & Imperial SBDC (free advising)
No-cost, one-on-one business consulting and low-cost training across San Diego and Imperial counties.
CA Secretary of State: bizfile Online
Where LLCs and corporations file with the California Secretary of State.
IRS: Get an EIN
Your federal tax ID. Apply online and, if approved, the number is issued immediately. The IRS never charges a fee for an EIN.
CDTFA: Seller's permit
Required if you sell or lease goods that would ordinarily be subject to sales tax. The CDTFA does not charge for it, though it may ask for a security deposit.
Franchise Tax Board: LLC $800 annual tax
Every LLC doing business or organized in California owes the $800 annual tax, even in a year it does no business, until the LLC is cancelled.
Franchise Tax Board: Corporation minimum tax
Corporations owe an $800 minimum franchise tax, but newly incorporated or qualified corporations do not pay it in their first taxable year.
GO-Biz: Permit & Regulatory Assistance
The Governor's Office of Business and Economic Development says it will assist any size company with permitting and regulatory questions.