Union City, California Short Term Rental Regulations Guide for Airbnb hosts

Overview: Are Short-Term Rentals Allowed in Union City, CA?

YES - Short-term rentals are permitted in Union City, CA. The city explicitly allows short-term rental operations but requires operators to complete a mandatory application process and obtain proper business licensing. Union City permits room, room and board, or boarding houses for not more than two paying guests in R and RS residential districts, as outlined in Chapter 18.32, "Residential Districts," of the Union City Municipal Code. The city has also established a voluntary collection agreement with Airbnb to manage transient occupancy tax collection on behalf of hosts.

What do Airbnb hosts actually earn in Union City?

Union City hosts earn a median $53,568/year with $261 ADR and 77% occupancy.

Top performers pull in $62,647+ per year.

See the full Union City market breakdown

How to Start a Short-Term Rental Business in Union City

Step 1: Application Submission

Submit the official Short-Term Rental Application to the Union City Finance Department, Revenue Division. Applications must be complete and signed to be processed - unsigned applications will not be accepted.

Step 2: Required Business Information

Provide comprehensive business details including:

Federal Employer ID Number (FEIN) if operating as a corporation or LLC
Driver's License, Government Issued ID, or Individual Taxpayer ID if operating as sole proprietor, partnership, trust, or estate
Property ownership documentation and rental addresses within Union City city limits only

Step 3: Contact Information Setup

Establish mandatory contact protocols:

Primary contact information with name, title, address, telephone, and email
Secondary contact information as backup
Local emergency contact available 24/7 for guest-related emergencies

Step 4: Platform Compliance

If using Airbnb, understand that the platform will automatically collect and remit transient occupancy taxes on your behalf through their Voluntary Collection Agreement (VCA) with Union City, effective since August 1, 2017. For other booking platforms, you must collect and remit taxes directly to the city.

Required Documents, Permits, Licenses, and Guidelines

Mandatory Business License Application

Application Form: Official Short-Term Rental Application (revised 12/04/2024)
Ownership Documentation: Property owner names, ownership type (Sole Proprietorship, Partnership, Corporation, Trust or Estate, LLC or LLP)
Identification Numbers: Federal EIN or Individual Taxpayer ID as applicable
Mailing Address: Complete property owner mailing address with contact information
Property Details: Total number of rental units owned in Union City
Rental Property Information: Complete addresses and unit counts for all Union City rental properties
Property Manager Information: If using a management company or property manager

Additional Required Disclosures

SB 1186 Compliance: State fee of $4 added to business license applications for disability access compliance
AB 2184 Protection: Option to protect residential address by providing different Service of Process address
Emergency Contact Protocol: Mandatory 24/7 emergency contact information for guest-related issues

Zoning Compliance Requirements

Properties must comply with residential district regulations under Chapter 18.32 of the Union City Municipal Code. Short-term rentals are permitted in R and RS districts with maximum occupancy of two paying guests for room, room and board, or boarding house operations.

Specific Regulations for Short-Term Rentals

Municipal-Level Regulations (Union City)

Transient Occupancy Tax: 12.87% tax rate applied to all short-term rental bookings
Zoning Restrictions: Permitted in R and RS residential districts only
Occupancy Limits: Maximum two paying guests for room, room and board, or boarding house arrangements
Business License Required: All short-term rental operators must obtain business licensing
Platform Collection: Airbnb automatically collects and remits TOT through VCA (effective August 1, 2017)

County-Level Regulations (Contra Costa County)

As of 2017, Contra Costa County was considering regulations for unincorporated areas, with the Board of Supervisors recognizing that different communities require varying approaches. The county sought input from municipal advisory councils by February 2018 to craft flexible regulations accommodating specific community needs while ensuring short-term rentals don't compromise affordable housing availability.

State-Level Regulations (California)

AB 2184: Business owners can protect residential addresses by providing different Service of Process address
SB 1186: State fee of $4 applied to business license applications for disability access compliance
ADA Compliance: Federal and state disability access laws apply to buildings open to the public

Contact Information for Local Authority

Primary Contact: Finance Department, Revenue Division

Address: 34009 Alvarado-Niles Road, Union City, CA 94587
Phone: (510) 675-5312
Fax: (510) 489-5074
Email: Biz-License@UnionCity.org
Website: www.UnionCity.org

For Transient Occupancy Tax Inquiries

Phone: (510) 471-3232
Department: Union City Finance Department

Key Contacts for Compliance

Business License Questions: Biz-License@UnionCity.org
Airbnb Platform Questions: Contact through Airbnb Help Center
Audit and Tax Verification: Refer to Airbnb Transaction History in host account

Important Notes for Investors

Platform-Specific Requirements

Airbnb Integration: Automatic TOT collection and remittance through VCA
Other Platforms: Direct collection and remittance required for non-Airbnb bookings
Record Keeping: Maintain detailed transaction records through platform Transaction History (Airbnb) or manual systems for other platforms

Compliance Monitoring

Application Updates: File for changes of name or general updates as needed
Business License Renewal: Required annually with applicable fees
Platform Audits: Airbnb provides detailed transaction history for audit purposes

Neighbor and Community Relations

Emergency Response: Maintain 24/7 emergency contact availability
Community Standards: Ensure operations comply with residential neighborhood expectations
Zoning Compliance: Verify property eligibility within R or RS districts

This comprehensive framework positions Union City as a moderately regulated market with established procedures for short-term rental operations while maintaining municipal oversight through licensing and tax collection requirements.

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Ask the AI Advisor about Union City

Union City sits in the southern part of Alameda County in California's San Francisco Bay Area, forming part of the East Bay's dense suburban corridor between Oakland and the southern reaches of the Bay. With a population of roughly 73,000, it is a notably diverse community that traces its roots to three older settlements—Alvarado, Decoto, and Centreville—that merged in 1959. The city has a working-class, family-oriented character shaped by generations of immigrants and its position as a bedroom community for the tech hubs of the East Bay and Silicon Valley. It lies about 30 miles southeast of San Francisco, a drive that can stretch from forty minutes to well over an hour depending on Bay Area traffic, and it is just a few miles north of the larger city of Fremont, with which it shares much of its regional identity.

A short drive east of town, Coyote Hills Regional Park offers one of the most distinctive outdoor experiences in the East Bay. The park protects more than 1,200 acres of marshland, rolling hills, and bay shoreline, with a network of trails that connect to the Bay Trail and to the reconstructed Tuibun Ohlone village site. Visitors come for birdwatching, the spring wildflower displays, and panoramic views across the South Bay toward the Santa Cruz Mountains, and it is typically less than ten minutes from the center of Union City.

Just to the south, Ardenwood Historic Farm preserves a slice of 19th-century Bay Area agricultural life on the site of the former Patterson Ranch. Operated as a living history farm, it features a restored Victorian mansion, heritage crops and livestock, and a railroad station served by the historic Niles Canyon Railway on seasonal weekends. The park is roughly a ten-minute drive from Union City and makes a relaxed half-day outing for families interested in the region's pioneer past.

Closer to the bay, the Don Edwards San Francisco Bay National Wildlife Refuge protects tens of thousands of acres of salt ponds, tidal marsh, and mudflats along the urbanized shoreline. The refuge's environmental education center in Alviso is about a 20-minute drive south, and it draws birders and cyclists who want to experience one of the largest urban wildlife refuges in the country without leaving the Bay Area.

Union City's appeal as a short-term rental base comes from this blend of suburban convenience and quick access to both natural open space and major Bay Area destinations. Guests can spend mornings on regional park trails and afternoons reaching San Francisco, Oakland, or the heart of Silicon Valley, all while staying in a quieter, more affordable corner of the East Bay.