Bolthole Index

Nevada County, California

Zoning, building permits and septic rules in Nevada City, California

Nevada City, California adopts and applies its own zoning inside city limits (Title 17 of the city code)1. The city's Planning Department reviews projects first, and Nevada City contracts with Nevada County for building department services, so building permits are issued by the county's Building Department2. Septic and well rules inside the city are not confirmed in our review; ask Nevada County Environmental Health.

At a glance

Zoning
Yes, the city's own zoning code applies inside city limits1
Building permits
Issued by the Nevada County Building Department under contract with the city; city planning review comes first2
Building code
2022 California Building Standards Code with local amendments3
Minimum lot (R1)
10,000 sq ft, 25 ft wide4
Minimum lot (AF)
5 acres5
ADUs
Allowed, with an ADU permit from city staff6
Septic
Not confirmed inside the city; ask county Environmental Health7
RV or tiny home living
Not confirmed; overnight camping inside the city is restricted8

Who to call

Zoning

Nevada City Planning Department

Zoning, site plan review and planning permits inside Nevada City limits

530-265-2496

planning@nevadacityca.gov

317 Broad Street, Nevada City, CA 95959

Building permits

Nevada County Building Department (serving Nevada City by contract)

Building permit plan review and inspections for projects inside Nevada City

530-265-1222

buildingdept@nevadacountyca.gov

950 Maidu Avenue, Suite 170, Nevada City

Septic permits

Nevada County Environmental Health Department (Community Development Agency)

Septic (onsite wastewater) permits and well regulation for Nevada County; applicability inside city limits is unconfirmed

530-265-1222

950 Maidu Avenue, Nevada City, CA 95959

Contact details are copied from each office’s official page and were checked against it on October 16, 2026.

Off-grid gear

Going off-grid in Nevada City means bringing your own water and power. The kit we’d start with:

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

Does Nevada City, California have zoning?

Yes. Nevada City applies its own zoning inside city limits through Title 17 of the city code, and the Planning Department applies those standards19. The county's zoning regulations cover only unincorporated land, so county rules do not govern a lot inside the city10.

Lot rules depend on the district. In the R1 single-family zone, lots need at least 10,000 square feet and 25 feet of width4. In the AF agriculture-forestry zone, the minimum lot is 5 acres5. Newly created lots in the R3 multiple-family zone need at least 21,780 square feet11.

Setbacks also vary. R1 requires a 30-foot front yard, 5-foot interior side yards, 10 feet on the street side of a corner lot and a 25-foot rear yard12. AF requires a 50-foot front yard, 6-foot interior side yards, 15 feet on a corner street side and a 25-foot rear yard13. We could not confirm height limits, lot coverage or minimum dwelling size, so ask the Planning Department before you design.

Do you need a building permit in Nevada City, and who issues it?

Building permits for projects inside Nevada City go through Nevada County's Building Department, because the city contracts with the county for building department services2. The city has adopted the 2022 California Building Standards Code with local amendments3.

The city's published ADU process shows the order: planning review at City Hall first, then a permit application to the county building department2. The city's code says an ADU application is filed by the parcel owner with the city planner on a city-approved form, with a fee14. We found only the ADU process, not the full permit rules for other construction, and we could not confirm owner-builder rules or fees inside the city. Call the Planning Department and the county Building Department before you start.

How do septic permits work inside Nevada City?

We could not confirm who issues septic permits inside Nevada City limits, or whether any city lot is allowed to use a septic system. The city's code requires accessory dwelling units to connect to public water, electric and sewer service15. For unincorporated Nevada County, Nevada County Environmental Health regulates onsite wastewater systems16. Ask that office whether a specific city address falls under it7.

If a lot sits near a creek, the city's flood rules also say on-site waste disposal systems must be located to avoid flood impairment17.

Can you build an ADU in Nevada City?

Yes. Nevada City allows accessory dwelling units in all zones where single-family or multi-family housing is permitted, once the owner has obtained an ADU permit from city staff6. A detached ADU can be up to 800 square feet and 16 feet high with 4-foot side and rear setbacks, a junior ADU is capped at 500 square feet, and neither can be rented for fewer than 30 days6.

Every ADU must connect to public water, electric and sewer service15. The filing goes to the city planner first14.

Can you live in an RV or tiny home in Nevada City?

We could not confirm whether Nevada City allows living in an RV or tiny home on private property, so ask the Planning Department before buying. What the city code does say is about camping: staying overnight in a vehicle, motor home, trailer coach, tent or other shelter on private property requires the owner's permission and adequate sanitary conditions and waste disposal, and public property requires written approval from the Police Chief8.

That rule is not a permission to live in an RV, and it does not answer whether a tiny home counts as a dwelling. For land outside city limits, see the Nevada County page, where the county has its own rules.

Building a home in Nevada City: the steps, in order

  1. Confirm your lot's zoning district with the Planning Department, and check the minimum lot size and setbacks for that district19.
  2. Ask the Planning Department whether your project needs a planning permit or design review before building plans are filed9.
  3. Check whether the lot is in a special flood hazard area; if it is, the lowest floor must be elevated at least 2 feet above base flood elevation plus 1 foot of freeboard in most zones17.
  4. Submit plans to the Nevada County Building Department, which handles building permits for the city2.
  5. Confirm sewer or septic with Nevada County Environmental Health before you design7.

What stays with Nevada County, and what to check before you buy

Nevada City's rules apply only inside city limits. On unincorporated land outside the city, the county's own zoning, building and septic rules apply instead, and the Nevada County page covers them.

Inside the city, the county still matters in two ways: its Building Department issues building permits under the city's contract2, and its Environmental Health office is the place to ask about septic and wells7. Before buying, confirm the zoning district, flood zone status, sewer service and the minimum lot size for that district1.

Watch-outs

  • Nevada City's Planning Department and the county Building Department are different offices at different addresses; zoning questions go to the city and building permit questions go to the county92.
  • We could not confirm septic permit rules, well rules, RV or tiny-home living, fees, or owner-builder rules inside Nevada City limits, so call the Planning Department or Nevada County Environmental Health before you buy7.
  • The R1 minimum lot is 10,000 square feet and the AF minimum is 5 acres, so a lot in one district can be a very different build than a lot in another45.

Sources

  1. Nevada City Code 17.24.060 R1 development standards (Nevada City), quoted and re-checked
  2. Nevada County Building Department (serving Nevada City by contract) (nevadacityca.gov)
  3. Nevada City Code 15.04.015 California Codes adopted (Nevada City), quoted and re-checked
  4. Nevada City Code 17.24.060 R1 development standards (Nevada City), quoted and re-checked
  5. Nevada City Code 17.16.060 AF development standards (Nevada City), quoted and re-checked
  6. Nevada City Code 17.72.022 ADU permit application (Nevada City), quoted and re-checked
  7. Nevada County Environmental Health Department (Community Development Agency) (nevadacountyca.gov)
  8. Nevada City Code 9.14.045 Camping prohibited without approval (Nevada City), quoted and re-checked
  9. Nevada City Planning Department (nevadacityca.gov)
  10. Zoning Regulations, quoted and re-checked
  11. Nevada City Code 17.30.070 R3 density standards (Nevada City), quoted and re-checked
  12. Nevada City Code 17.24.060 R1 development standards (Nevada City), quoted and re-checked
  13. Nevada City Code 17.16.060 AF development standards (Nevada City), quoted and re-checked
  14. Nevada City Code 17.72.022 ADU permit application (Nevada City), quoted and re-checked
  15. Nevada City Code 17.72.026 ADU development standards (Nevada City), quoted and re-checked
  16. On-Site Wastewater Treatment Systems (OWTS) and Local Area Management Plan (LAMP), quoted and re-checked
  17. Nevada City Code 13.20.050 Flood hazard reduction (Nevada City), quoted and re-checked

Written October 16, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Answers from the rulebook for Nevada City

Nevada City’s own rules

  • Building code adoptedAdopted

    2022 California Building Standards Code adopted by Nevada City with local amendments

    • Subject to the modifications and amendments in Chapter 15.04
    “subject to the modifications and amendments contained in this chapter, the following codes and standards are adopted and incorporated into the municipal code of the city of nevada city by reference”
  • Local zoningPresent

    Land inside Nevada City limits; Title 17 Zoning of the city code

    “the following minimum requirements shall be observed in the r1 zone, except where increased for conditional uses”
  • Minimum lot sizeSpecified

    AF Agriculture Forestry zone, Nevada City

    • Except where increased for conditional uses

    lot area: >= 5 acres · lot width: >= 100 ft

    “d. rear yard, twenty-five feet; e. lot area, five acres.”
    2 more reviewed findings on this topic
  • SetbacksSpecified

    AF Agriculture Forestry zone, Nevada City

    • Except where increased for conditional uses

    front yard: >= 50 ft · interior side yard: >= 6 ft · street side of corner lot: >= 15 ft · rear yard: >= 25 ft

    “b. front yard, fifty feet; c. side yards. 1. interior side, six feet, 2. street side of corner lot, fifteen feet; d. rear yard, twenty-five feet;”
    One more reviewed finding on this topic
    • Specified — R1 Single-Family Residential zone, Nevada City
      “c. front yard, thirty feet; d. side yard. 1. street side of corner lot, ten feet, 2. interior side, five feet, e. rear yard, twenty-five feet.”
  • Camping on your landLimited

    Camping or overnight stays inside Nevada City on public property and on private property

    • Public property requires advance notice and written approval from the Police Chief
    • Private property requires owner permission and adequate sanitary conditions and waste disposal
    • Applies whether in a vehicle, motor home, trailer coach, tent or other shelter
    “or on any private property without first obtaining permission of the owner and making adequate arrangements to assure sanitary conditions and proper waste disposal.”
  • Accessory dwellingsAllowed (with conditions)

    Accessory and junior accessory dwelling units inside Nevada City

    • Owner must first obtain an ADU permit from city staff
    • Must meet 17.72.024 and 17.72.026 standards or be a type in 17.72.027
    • Not rentable for under 30 days (17.72.027)
    • Detached ADU up to 800 sq ft and 16 ft high with 4 ft side and rear setbacks (17.72.027); JADU max 500 sq ft
    “accessory dwelling units are permitted in all zones within the city where single-family or multi-family residential units are permitted, subject to the owner first obtaining an accessory dwelling unit permit from city staff.”
  • Mandatory utility hookupConditional

    Accessory dwelling units inside Nevada City (general new-home connection rule not found)

    • Applies to ADUs; separate connection not required for units created within a single-family dwelling unless built with a new single-family dwelling
    “all accessory dwelling units must be connected to public utilities, including water, electric, and sewer services.”
  • Building in a floodplainRequired

    Development in areas of special flood hazard inside Nevada City

    • Residential lowest floor elevated at least two feet above base flood elevation plus one foot of freeboard in most zones
    • Manufactured homes must meet anchoring and elevation standards in subsection D
    • On-site waste disposal systems must be located to avoid flood impairment

    elevation above BFE: >= 2 ft (plus one foot of freeboard; AO and A zones differ)

    “iii. in all other zones, elevated at least two (2) feet above the base flood elevation specified on the firm plus one (1) foot of freeboard”
  • Permit processPartial

    Accessory dwelling unit permit process inside Nevada City

    • Application filed by the parcel owner with the city planner on a city-approved form and subject to the established fee
    • Only the ADU process was found; general building permit process not located
    “b. an application for an accessory dwelling unit shall be made by the owner of the parcel on which the primary unit sits and shall be filed with the city planner on a city-approved application form and subject to the established fee.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Nevada City or Nevada County directly.

  • Building permit — Building permits inside Nevada City
  • Owner-builder exemption — Owner-builder exemption inside Nevada City
  • Inspections — Building inspection inside Nevada City
  • Certificate of occupancy — Certificate of occupancy inside Nevada City
  • Minimum dwelling size — Minimum dwelling size inside Nevada City
13 more unanswered
  • Lot coverage
  • Building height
  • Living in an RV
  • Tiny homes
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • Permit fees

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that Nevada City publishes no rule on the point, not that none exists. Nevada County’s page lists the county offices to call.

← All of Nevada County: county rules, score and offices