Based on the provided content, here is a comprehensive guide for investors considering short-term rentals (STRs) in Los Altos Hills, California:

OVERVIEW: Short-term rentals ( rentals of 30 days or less) ARE ALLOWED in Los Altos Hills, CA, but under very specific and restrictive regulations designed to protect the town's rural, residential character. The most critical requirement is that the STR must be operated within the host's PRIMARY RESIDENCE and comply with strict rules to avoid becoming a public nuisance.

1. How to Start a Short-Term Rental Business

1. Confirm Eligibility: Ensure the property is your Primary Residence (used 270+ days/year and listed as mailing address with Santa Clara County Assessor).
2. Obtain License: Mandatory. Operate only after successfully registering and obtaining a Short-Term Rental License from the Town.
3. Understand Restrictions: Thoroughly review the ordinance (Section 10-1.1204) and the Short-Term Rental Policy and Applicant Agreement. Key restrictions include:
   • Only ONE STR unit per residential property.
   • STR must occur within the host's primary residence.
   • NO commercial events or activities allowed (weddings, corporate events, photo shoots, parties, etc.).
   • NO overnight street parking.
   • NO outdoor amplified sound systems.
   • Strict noise limits (50 dB daytime, 40 dB nighttime).
   • Hosts are responsible for preventing nuisances.
   • Three validated nuisance violations = license revocation.
4. Consider Conditional Permit: If you need an exception to the general requirements (Section 10-1.1205) OR if your license was revoked, you may apply for a Conditional Short-Term Rental Permit, which requires a public hearing before the Site Development Committee and may involve additional restrictions.
5. Maintain Compliance: Continuously operate per the license, ordinance, and signed policy agreement to avoid violations and revocation.

2. Required Documents, Permits, Licenses, and Guidelines

• Short-Term Rental License (STR License): Mandatory to operate. Must be obtained from the Town before starting rentals.
• Short-Term Rental Policy and Applicant Agreement: Must be signed by the property owner. This document outlines detailed operational rules, prohibited nuisance activities, and owner responsibilities. Acknowledge receipt and compliance upon licensing.
• Compliance with All Laws: Must comply with all applicable local, state, and federal laws, including health, safety, fire, and building codes.
• Proof of Primary Residence: Documentation showing the property is your primary residence for at least 270 days per year and is listed as your mailing address with the Santa Clara County Assessor (e.g., Assessor's record).

3. Specific Regulations (Los Altos Hills Municipal Code & Policy)

• Eligibility & Core Rules (Ordinance 575 - Chapter 10-1.1201 to 10-1.1208):
  • Permit Type: STR License (Standard). Conditional Permit required for exceptions or revoked licenses.
  • STR Definition: Transient lodging for compensation for 30 consecutive calendar days or less.
  • Primary Residence Requirement: STR must be within the owner's primary residence (270+ days/year, mailing address on Assessor records).
  • Unit Limit: Maximum of one (1) STR unit per residential property.
  • Permitted Use: Residential purposes ONLY. NO events or commercial uses permitted (explicitly lists weddings, corporate events, photo/video shoots, parties).
  • Occupancy Standards: Renters must be provided sleeping, bathing, and toileting facilities within a permanent dwelling suitable for human occupancy. NO renting balconies, porches, tents, sheds, vehicles, garages, or outdoor areas.
  • Parking: All parking must be on-site in approved parking areas. NO overnight street parking (per Municipal Code section 4-3.1006).
• Noise Restrictions (Policy & Ordinance):
  • NO outdoor amplified sound systems.
  • Must comply with Town noise limitations: 50 decibels during daytime, 40 decibels at nighttime.
    • Daytime: 8:00 AM - 7:00 PM (Weekdays), 9:00 AM - 7:00 PM (Weekends/Holidays, PST or PDT).
    • Nighttime: All other hours.
• Nuisance Prevention & Enforcement (Ordinance & Policy):
  • Host is responsible for ensuring the property does not become a nuisance due to occupant activities.
  • Validated Nuisance: Defined in the ordinance as a prohibited use/impact associated with the STR, confirmed with sufficient documentation.
  • CRITICAL RULE: Any STR accumulating THREE (3) VALIDATED NUISANCE VIOLATIONS will result in REVOCATION of the STR license.
  • Prohibited nuisance activities (Policy) include:
    • Parking on pathways at any time.
    • Overnight on-street parking (including private streets).
    • Noise violations (outdoor amplified sound, exceeding dB limits).
    • Hosting non-residential events.
• Visits & Minors (Policy):
  • Visitors are permitted but must comply with the STR policy; host is responsible.
  • Adult supervision is required for all renting minors throughout the rental period.
• Conditional Permit Process (Ordinance 10-1.1205): For exceptions or revoked licenses. Requires noticed public hearing before the Site Development Committee. Additional restrictions likely (occupancy limits, parking, quiet hours, neighbor notification). Appeals go to Planning Commission (per 10-1.1002).
• Fees (Ordinance 10-1.1206): The City Council sets fees by resolution.
• Violations & Enforcement (Ordinance 10-1.1207): Operating without a license or contrary to provisions is unlawful and a public nuisance. The Town can pursue abatement, removal, and injunction, in addition to other remedies.

4. Contact Information (Local Authority)

• Town of Los Altos Hills (Primary Authority for Licensing & Enforcement)
  • Phone: (650) 941-7222
  • Website: losaltoshills.ca.gov
  • Address: 26379 Fremont Road, Los Altos Hills, CA 94022

5. Source Links

• Ordinance 575: https://losaltoshills.ca.gov/DocumentCenter/View/2019
• Short-Term Rental Policy & Applicant Agreement: https://losaltoshills.granicus.com/MetaViewer.php?view_id=3&clip_id=413&meta_id=65587
• News Article (Historical Context): https://www.losaltosonline.com/news/los-altos-hills-council-pursues-new-approach-to-short-term-rental-rules/article_d19b8db0-7aa3-566c-a9e4-97d144dcc866.html
• General Town STR Info Page (Mentioned in Article): http://losaltoshills.ca.gov/382/Short-Term-Rentals (Note: Check the main site for current information).

Key Takeaway for Investors: Operating an STR in Los Altos Hills is highly regulated and tied strictly to primary residency. Success depends on meticulous compliance to avoid the severe penalty of license revocation after three validated nuisances. The strict noise and event prohibitions significantly limit potential income streams compared to less regulated markets. Ensure you meet all eligibility criteria before investing or applying for a license.