Placer County Code: Zoning, Permits, and Enforcement

The Placer County Code is the collection of local ordinances that governs unincorporated Placer County, setting the rules for zoning, building, short-term rentals, business licensing, animals, noise, fire safety, and code enforcement. The Board of Supervisors enacts and amends it under authority granted by the California Constitution and the Placer County Charter.¹ You can read the full text, free, on eCode360, where it’s organized by chapter and article and searchable by keyword. Each section shows when it was last updated, which matters because amendments happen often.

Who the Code Covers

The code applies only to the unincorporated parts of the county. If your address is inside Roseville, Rocklin, Auburn, Lincoln, Loomis, or Colfax, your city’s municipal code controls instead. Chapter 17 states plainly that its zoning and land use provisions reach “all land uses and development within the unincorporated areas of Placer County,” and the same territorial limit runs through the building, animal, noise, and business chapters.²

One important overlap: properties in the Lake Tahoe basin also fall under the Tahoe Regional Planning Agency. Permits in that area go through a joint review, and the county’s Building Division coordinates inspections with TRPA.³ If your parcel is in the basin, plan on satisfying both sets of rules.

Zoning, Setbacks, and Building Height

Chapter 17 divides the unincorporated county into zoning districts organized into three broad groups: agricultural and open space, commercial and industrial, and residential.⁴ Each district has its own permitted uses, density limits, and development standards. The ordinance itself is split into four parts covering general provisions, zone districts and allowed uses, administration and procedures, and the Williamson Act lands program.⁵

In the Residential Single-Family (RS) district, the front setback is a minimum of 20 feet and the street-side setback is 10 feet. Rear setbacks run from 10 feet for a single-story structure to 20 feet for two or more stories. Side setbacks require a combined 15 feet total, with at least 5 feet on one side for a single-story home and 7.5 feet for two stories.⁶ Mountain communities near Tahoe and Truckee carry wider side setbacks because of snow loading.

Height limits turn on district and lot size. In the Building Site (-B) combining district, the ceiling is 30 feet on lots under 20,000 square feet and 36 feet on larger parcels. Multifamily residential zones allow up to 55 feet, and commercial zones generally cap heights between 30 and 50 feet.⁵

Building Permits and ADUs

Chapter 15 adopts the 2025 edition of the California Building Standards Code (Title 24) as the county’s baseline. It covers all new construction, alterations, repairs, and relocations, plus electrical, mechanical, plumbing, and fire protection work.⁷ A permit requires plans that satisfy both the state code and the applicable zoning standards, and the county will not issue a permit for a site that violates the Chapter 16 subdivision rules.

For accessory dwelling units, the county largely defers to state law. Detached ADUs up to 800 square feet, conversions of existing structures, and junior ADUs are state-exempt and need only a building permit. Larger detached ADUs between 800 and 1,200 square feet, and new attached ADUs such as additions, go through ministerial review with added standards like open space requirements.⁸ Because state ADU law shifts often, the county references the Government Code directly rather than freezing its own numbers.

Short-Term Rental Rules

Renting a home for 30 days or fewer in the unincorporated county requires a short-term rental permit under Article 9.42. Operating or even advertising an STR without one triggers escalating penalties: $1,500 for a first offense, $3,000 if the owner still hasn’t applied within 30 days, and $5,000 after another 30.⁹

The Board of Supervisors set a county-wide cap of 3,900 permits. Owner-occupied rentals don’t count toward the cap, and once the cap is reached, new non-owner-occupied STRs face a 30-night minimum rental requirement.¹⁰ Permits expire after 364 days and must be renewed each year.⁹

To get a permit, you’ll need:

A non-refundable application fee of $326.02, whether privately or professionally managed
A passing interior fire-life safety inspection and a passing exterior defensible space inspection, each valid for three years
A Transient Occupancy Tax certificate
A local contact person reachable by phone 24 hours a day and living within 35 driving miles of the rental
A photo of a bear-resistant container at the property, or of the nearest dumpster for condos

Nighttime occupancy is capped at two people per bedroom plus two additional guests, up to 12 total, with children under 12 excluded from the count. Daytime occupancy is 1.5 times the overnight limit.⁹ Letting fire inspections lapse can suspend a permit, and you cannot rent short-term again until it’s reinstated.¹⁰

Business Licenses and Home Occupations

Any business operating in the unincorporated county, whether at a residence, a commercial address, or a mobile location, needs a license under Chapter 5. The application fee is $111 for home-based businesses and $131 for commercial locations, with a $20 annual renewal in both cases. Veterans and nonprofits pay a reduced $4 fee.¹¹ Licenses don’t transfer, so a change of ownership or address means a new application. If you operate under a fictitious name, add a Fictitious Business Name Statement from the County Recorder.

Home-based businesses have extra limits. Only residents of the home plus one outside employee may work on the premises, signage is restricted by zoning (and in many commercial and industrial zones requires Design Review Committee approval), and the license must be posted where the business is conducted.¹²

Animals, Noise, Fire, and Cannabis

Chapter 6 makes it unlawful for an owner to let any animal “run at large,” meaning off the owner’s property without restraint by a lead, leash, or adequate enclosure.¹³ Exceptions cover dogs herding livestock, assisting law enforcement, participating in training or competition, or accompanying someone on a legal hunt.¹⁴ A kennel license is required for anyone breeding or selling more than two litters a year or boarding or training dogs, with tag counts scaling by kennel size (two tags for 5 to 10 dogs, four for 11 to 15, six for 16 or more).¹⁵

Article 9.36 sets noise limits by time of day. Daytime runs from 7:00 a.m. to 10:00 p.m., nighttime from 10:00 p.m. to 7:00 a.m. Daytime: 55 decibels hourly average and 70 decibels maximum at a neighboring property line. Nighttime: 45 and 65. Sounds with simple tones such as speech or music are held to standards five decibels lower.¹⁶ The Board amended this article in February 2026, so check eCode360 for the current thresholds before relying on them in a dispute.

Fire safety is enforced through defensible space rules. California Public Resources Code Section 4291 requires 100 feet of defensible space around structures, and the county ordinance reinforces that standard.¹⁷ Failing to clear hazardous vegetation is among the most common enforcement issues in the foothills and mountains, and the county can abate the condition and bill the owner. Debris accumulations, abandoned vehicles, and drainage alterations causing flooding all fall under the same nuisance abatement authority. A repeat offender within two years can be ordered to pay triple the abatement costs.¹⁸

On cannabis, the county’s ordinance (effective January 1, 2017) allows indoor and outdoor cultivation for personal use only, consistent with Proposition 64’s six-plant household limit. It does not authorize commercial cultivation, manufacturing, or retail sales in unincorporated areas.¹⁹

Enforcement and Penalties

Enforcement under Article 17.62 starts with a written warning giving the property owner 10 days to correct the problem. A code official can shorten that window for an immediate health or safety hazard, or extend it when the owner is making good-faith progress.²⁰

If the violation continues, administrative fines climb:

First citation: $500 per violation
Second citation (same ordinance, same property, within one year): up to $750 per violation
Third or subsequent citation: up to $1,000 per violation

Fines are cumulative when multiple citations are issued. A warning is not required before the first citation when the violation creates immediate danger, and no further warning is required before second or subsequent citations for the same ongoing problem.²⁰

Beyond administrative fines, violations of Chapters 5, 8, 9, 12, 15, 16, 17, 18, or 19 that don’t carry a specific penalty elsewhere are misdemeanors. Under the county code and California Penal Code Section 19, a misdemeanor is punishable by up to six months in county jail, a fine of up to $1,000, or both.²¹²²

Anyone who receives an administrative citation can request a hearing before a county hearing officer independent of county staff. The same process covers permit revocations, nuisance abatement, and bond forfeiture appeals, and the hearing officer issues a written decision.²⁰ If you need a certified copy of a specific code section rather than the online version, the Clerk of the Board of Supervisors is the official custodian of county records.²³

1
Placer County, CA. Placer County Code – Article III General Powers and Duties of the Board of Supervisors
2
Placer County, CA. Placer County Code Chapter 17 – Article 17.02 Introductory Provisions
3
Placer County, CA. Tahoe Regional Planning Agency
4
Placer County, CA. Placer County Code Chapter 17 Zoning – Article 17.06 Zoning Districts Established
5
Placer County, CA. Zoning Ordinance
6
Placer County, CA. Placer County Code – Article 17.50 Residential Single-Family (RS) District
7
Placer County, CA. Placer County Code Article 15.04 – Building and Construction Code
8
Placer County, CA. Updates to ADU Regulations
9
Placer County, CA. Placer County Code – Article 9.42 Short-Term Vacation Rentals
10
Placer County, CA. Short-Term Rental Program
11
Placer County, CA. Business Licenses
12
Placer County, CA. Restrictions
13
Placer County, CA. Placer County Code Chapter 6 Animals – Article 6.04 General Provisions, Administration and Definitions
14
Placer County, CA. Placer County Code – Article 6.08 Animal Control Regulations Generally
15
Placer County, CA. Placer County Code – Article 6.12 Dog and Kennel Licenses
16
Placer County, CA. Placer County Code – Article 9.36 Noise
17
Placer County, CA. Hazardous Vegetation
18
Placer County, CA. Placer County Code – Part 8 Abatement of Nuisances
19
Placer County, CA. Cannabis Ordinance
20
Placer County, CA. Placer County Code Article 17.62 – Code Compliance and Enforcement
21
Placer County, CA. Placer County Code – Article 1.24 General Penalty
22
California Legislative Information. California Penal Code Section 19
23
Placer County. Clerk of the Board