Altadena, California Short Term Rental Regulations Guide for Airbnb hosts

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

Yes, short-term rentals are explicitly allowed in Altadena, CA. Altadena is located within unincorporated Los Angeles County, and the County's Short-Term Rental Ordinance permits STRs as an accessory use to existing dwelling units in zones that permit residential uses. However, there are specific requirements and limitations that investors must understand before operating.

What do Airbnb hosts actually earn in Altadena?

Altadena hosts earn a median $26,855/year with $210 ADR and 65% occupancy.

Top performers pull in $44,732+ per year.

See the full Altadena market breakdown

How to Start a Short-Term Rental Business in This Market

Starting a STR business in Altadena requires following a specific multi-step process mandated by Los Angeles County:

Step 1: Initial Setup Process

1. Contact the Short-Term Rental Unit

Call (213) 974-2011 or email STRental@ttc.lacounty.gov
Request a unique six-digit Account Number and Activation Code
This is a mandatory one-time step for initial account setup

2. Create Your Online Account

Visit lacountystr.munirevs.com
Create your account using the Account Number and Activation Code received in Step 1

3. Submit Application and Pay Fees

Log into your account
Submit your application for a Short-Term Rental Registration Certificate
Pay the required registration fee

Step 2: Ongoing Compliance Requirements

Transient Occupancy Tax (TOT) Management

Collect TOT from guests for all stays 30 consecutive days or less
Remit TOT payments within 30 days after the rental start date
Use the online portal at lacountystr.munirevs.com for TOT payments

Required Documents, Permits, Licenses, and Guidelines

Primary Requirements

1. Short-Term Rental Registration Certificate

Required before renting out any property as a STR
Must be renewed annually
Only available for primary residences in unincorporated LA County

2. Business License

STRs are classified as business activities requiring county business licenses
Must maintain active business license status
Renewal required annually

3. Transient Occupancy Tax Registration

Separate registration required for TOT collection and remittance
Must be completed before hosting any guests

Documentation and Compliance

Primary Residence Verification: Property must be your primary residence
Annual Registration Renewal: STR registration expires yearly
TOT Monthly Reporting: Must file monthly TOT returns even if no rentals occurred
Guest Record Keeping: Maintain records of all guest stays and TOT collected

Specific Regulations for Short-Term Rentals

Los Angeles County Level Regulations (Applying to Altadena)

Property Type and Use

STRs limited to registered primary residences only
Must be in zones that permit residential uses
Prohibited in coastal zones (not applicable to landlocked Altadena)
Accessory use to existing dwelling units only

Rental Limitations

90-Day Rule: Maximum 90 days per calendar year for rentals without host present overnight
Host Presence: When host is present overnight, no day limitations apply
30-Day Minimum: Guests staying 30 consecutive days or less are considered short-term
Primary Residence Requirement: Property must be host's primary residence

Operational Requirements

Annual Registration: Required for all STR operations
TOT Collection: Mandatory collection and remittance of Transient Occupancy Tax
Guest Limits: Number of guests limited per property (specific limits not detailed in provided content)
Online Platform Compliance: Hosting platforms face penalties up to $1,000 per day for listing unregistered properties

California State Level Regulations

While specific California state STR regulations are not detailed in the provided content, investors should be aware of:

State tax obligations beyond local TOT
Potential Agricultural Preserve restrictions if applicable to property location
Fire safety and emergency access requirements, particularly relevant given Altadena's fire-risk area status

Contact Information for Local Authority

Primary Contact: Los Angeles County Treasurer and Tax Collector

Short-Term Rentals Unit
Phone: (213) 974-2011
Email: STRental@ttc.lacounty.gov
Business Hours: Monday-Friday, 8:00 AM to 5:00 PM PT
Website: ttc.lacounty.gov/str/

Additional Contact Information

Main Office: 320 West Temple Street, Los Angeles, CA 90012
General Planning: (213) 974-6411, info@planning.lacounty.gov
Complaint Hotline: (213) 371-1070 (24/7 GovOS Platform)

Online Resources

STR Portal: lacountystr.munirevs.com/login
Business License Application: epicla.lacounty.gov/energov_prod/selfservice/Selfservice#/applicationAssistant?sectionName=All&moduleId=10&categoryName=County%20of%20Los%20Angeles%20Business%20License&showTemplates=false

Important Notes and Recent Updates

Disaster-Related Considerations

Certain STR restrictions may be suspended to provide housing for fire victims
Contact Business License Section at (213) 974-2011 or businesslicense@ttc.lacounty.gov for fire-related assistance
Check current disaster recovery resources at planning.lacounty.gov/disaster-recovery/

Compliance Enforcement

Operating without valid registration certificate results in serious consequences
Noncompliance fees, administrative fines, and platform listing removal
Platform-level penalties up to $1,000 per day for unregistered property listings

Source References

Los Angeles County Department of Regional Planning - Short-Term Rentals Ordinance: planning.lacounty.gov/long-range-planning/short-term-rentals-ordinance/
Los Angeles County Treasurer and Tax Collector - Short-Term Rentals: ttc.lacounty.gov/str/
Certified Ordinance Document: file.lacounty.gov/SDSInter/bos/supdocs/196543.pdf
STR Terms and FAQs: ttc.lacounty.gov/wp-content/uploads/2024/10/STR-Terms-and-FAQs-1.pdf
Short-Term Rentals Ordinance PDF: ttc.lacounty.gov/wp-content/uploads/2024/05/Short-Term-Rental-Ordinance.pdf
Unincorporated Areas Map: www.arcgis.com/apps/instant/lookup/index.html?appid=9d20879a1db945b5a6cd7deeacff25be

Note: This guide is based on Los Angeles County regulations that apply to Altadena as an unincorporated area. Always verify current requirements with the County before establishing or operating a short-term rental business, as regulations may be subject to updates and changes.

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Ask the AI Advisor about Altadena

Altadena is an unincorporated community in Los Angeles County, California, tucked at the southern base of the San Gabriel Mountains. With a population of roughly 45,000 residents, it carries the character of a leafy foothill neighborhood, defined by Craftsman bungalows, sycamore and deodar cedar trees, and a quieter pace than the denser cities just below it. The community is best known as a gateway to the trails, canyons, and observatories of the Angeles National Forest, and as a more relaxed alternative to its immediate neighbor, Pasadena. It sits about 14 miles north of downtown Los Angeles, just past the eastern end of the Ventura Freeway.

One of the most popular outdoor destinations in or right at the edge of town is Eaton Canyon Natural Area, a roughly 190-acre county park laced with shaded paths leading to a three-tiered waterfall. The main trailhead is only a few minutes from most parts of Altadena, and the area is a favorite for year-round hiking, wildlife watching, and the seasonal nature center programs run by the county.

A short but dramatic drive up the mountain roads above town brings visitors to Mount Wilson Observatory, the historic astronomical facility where astronomers first measured the size of the Milky Way and where the 100-inch Hooker Telescope once helped establish the expansion of the universe. The winding route from Altadena takes about 45 minutes to an hour, and the summit offers panoramic views, a paved walking loop, and a small museum and cafe on weekends.

Altadena is also closely tied to the broader Angeles National Forest, which sprawls across the mountains to the north and east. Trailheads leading into the forest for backcountry hiking, camping, and winter snow play begin within a few minutes' drive of most neighborhoods, making the community a natural jumping-off point for travelers who want big-mountain scenery without leaving the greater Los Angeles area.

Just south of Altadena lies Pasadena, easily reached in about ten minutes and home to world-class draws such as the [Rose Bowl](en.wikipedia.org/wiki/Rose_Bowl_(stadium), Old Town Pasadena's shopping and dining corridor, and the Norton Simon Museum. Combined with the easy reach of downtown Los Angeles and the San Gabriel Valley's cultural offerings, Altadena offers short-term rental guests a rare mix of small-town calm, mountain access, and proximity to two of Southern California's most visited urban centers.