Rules for ZIP Code 91901
Alpine, CA · San Diego County
175 local rules on file for this area. The rules on file for this ZIP code come from San Diego County.
ZIP code 91901 is unincorporated San Diego County land, in the community of Harbison Canyon: about 100% of its residents live outside any city or town, so the county's ordinances are the local rules here. County rules tend to differ from nearby cities in areas like noise enforcement, building setbacks, and animal regulations.
ZIP codes do not follow city lines. 91901 also covers:
- Alpine (community)~66% of residents · not covered yet
Shares are estimates from 2020 Census geography. If your address is in one of these, its rules apply instead.
Each topic below links to the full ordinance breakdown with specific code sections, fine amounts, and answers to common questions. The data is sourced from the official municipal code and verified by our editorial team.
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These are the local rules that apply to ZIP code 91901 based on San Diego County ordinances.
Sign Regulations
5 rules- Holiday DisplaysSome
- Freeway-Facing SignsSome
- Window SignsLight
- Digital BillboardsHeavy
- Political SignsSome
Filming & Production
3 rules- Location PermitsSome
- Street ClosuresSome
- Production NoiseSome
Parking Rules
8 rules- Loading ZonesSome
- Commercial & Oversized VehiclesSignificant
- Street Parking LimitsSome
- Abandoned VehiclesSome
- Overnight ParkingSome
Noise from Specific Sources
5 rulesOutdoor Lighting
3 rulesAnimal Ordinances
11 rules- Wildlife FeedingFew
- Pet LimitsSome
- Cat RulesSome
- Mandatory Spay/NeuterSome
- MicrochippingLight
Building Safety
9 rules- Plumbing PermitsSome
- Childcare Center RulesSignificant
- Green Building CodeSome
- Anti-MansionizationSome
- Electrical PermitsSome
Mobility & Curb Rules
2 rules- E-Bike ClassesSome
- Bike Lane RulesSome
Public Conduct
5 rules- Loitering RulesSignificant
- Outdoor Smoking RestrictionsHeavy
- Public Alcohol UseSignificant
- Loud Party OrdinanceSignificant
- Skateboarding RulesHeavy
Tree Protection
2 rulesZoning Overlays & Bonuses
1 ruleHistoric Preservation
1 ruleOutdoor Cooking
1 rule- Smoker RulesSome
Fire Regulations
7 rules- Smoke DetectorsSome
- Propane StorageSignificant
- Fire Pits & Backyard FiresSome
- Brush ClearanceLight
- Wildfire ZonesSome
Homelessness & Encampment Rules
1 ruleAccessory Structures
7 rulesNoise Ordinances
8 rulesEnvironmental Rules
6 rulesWater Use Rules
3 rules- Recycled Water RulesSignificant
- Leak Reporting DutySome
- Turf Replacement RebatesSome
Trash & Recycling
9 rulesData Centers & Crypto Mining
2 rules- Data Center Noise LimitsSignificant
- Data Center Zoning & SitingSignificant
Drone Rules
3 rules- Park Drone RestrictionsSignificant
- Event Drone RestrictionsSignificant
- Recreational DronesSome
Public Health Rules
3 rules- Restaurant Grade CardsSome
- Rodent ControlSignificant
- Food Handler CertificationSome
Gambling & Gaming
1 rule- Card Room LicensingHeavy
Short-Term Rentals
5 rules- Host Presence RuleSignificant
- Short-Term Rental PermitsSome
- Short-Term Rental Parking RulesSome
- Occupancy LimitsSome
- Taxes & FeesSome
Sidewalk & Pedestrian Rules
2 rules- Obstruction RulesSignificant
- Encroachment PermitsSome
Rental Inspections
2 rules- Tenant Complaint ProcessSignificant
- Inspection ProgramsSignificant
Special Events & Permits
6 rules- Park Event PermitsSome
- Commercial Filming on Public Right-of-WaySignificant
- Street Fair RulesSome
- Block Party PermitsSome
- Sidewalk Dining & CafésSignificant
Business Licensing & Operations
5 rules- PawnbrokersSignificant
- Secondhand DealersSignificant
- Tobacco Retail LicenseSignificant
- Tattoo & Body ModificationSignificant
- Adult EntertainmentSignificant
Tobacco & Vaping
1 ruleHome Business
5 rulesFence Regulations
5 rulesCannabis Regulations
2 rules- Dispensary ZoningHeavy
- Home CultivationLight
Landscaping Rules
8 rules- CompostingSome
- Weed OrdinancesSome
- Artificial TurfLight
- Tree Removal & Heritage TreesSignificant
- Water RestrictionsLight
Solar Energy
3 rulesRental Property Rules
4 rules- Repairs & HabitabilitySome
- Just Cause EvictionSignificant
- Rent ControlSome
- Rental RegistrationSome
Hotels & Lodging
1 ruleRight to Farm
2 rulesInvasive Plant Rules
2 rulesPrivacy & Surveillance
1 ruleSoliciting & Door-to-Door
2 rulesFood Trucks & Mobile Vendors
2 rules- Vending ZonesLight
- Food Truck PermitsSome
Swimming Pools & Spas
2 rulesCurfew Laws
2 rules- Park CurfewSome
- Juvenile CurfewSome