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Noise and construction hours in Napa County

Napa County's own rules on noise and construction hours, with the code text for every value.

Ask about noise and construction hours in Napa County See coverage

Each rule below links to the section of the Napa County Municipal Code it was read from, with the code text one click away (checked October 2026). General information, not legal advice.

What Napa County's code says

Napa County code What Napa County's code adds
Construction hours on weekdays
  • 7 a.m. to 7 p.m.
    Applies: Every day; outside these hours, construction tools may not disturb across a residential or commercial property line; utility emergency work or a variance excepted.
    § 8.16.080 · code text
    Operating or causing the operation of any tools or equipment used in construction, drilling, repair, alteration or demolition work between the hours of seven p.m. and seven a.m.
Quiet hours
  • 10 p.m. to 7 a.m.
    Applies: Household power tools (saws, sanders, drills, grinders, lawn or garden tools) may not disturb across a residential or commercial property line then.
    § 8.16.080 · code text
    Operating or permitting the operation of any mechanically powered saw, sander, drill, grinder, lawn or garden tool, or similar tool between ten p.m. and seven a.m.
Noise limit at homes
  • No more than 55 dBA.
    Applies: Measured inside a neighboring dwelling unit, 10 p.m. to 7 a.m., for more than 5 minutes in any hour.
    § 8.16.060 · code text
    | All | Residential | 10 p.m. — 7 a.m. | 55 |
  • No more than 60 dBA.
    Applies: Measured inside a neighboring dwelling unit, 7 a.m. to 10 p.m., for more than 5 minutes in any hour.
    § 8.16.060 · code text
    | | | 7 a.m. — 10 p.m. | 60 |
  • No more than 45 dBA.
    Applies: Single- and two-family homes, rural zone, 10 p.m. to 7 a.m.; for more than 30 minutes in any hour.
    § 8.16.070 · code text
    | Residential | 10 p.m. — 7 a.m. | 45 | 45 | 50 |
  • No more than 45 dBA.
    Applies: Single- and two-family homes, suburban zone, 10 p.m. to 7 a.m.; for more than 30 minutes in any hour.
    § 8.16.070 · code text
    | Residential | 10 p.m. — 7 a.m. | 45 | 45 | 50 |
  • No more than 50 dBA.
    Applies: Single- and two-family homes, urban zone, 10 p.m. to 7 a.m.; for more than 30 minutes in any hour.
    § 8.16.070 · code text
    | Residential | 10 p.m. — 7 a.m. | 45 | 45 | 50 |
  • No more than 50 dBA.
    Applies: Single- and two-family homes, rural zone, 7 a.m. to 10 p.m.; for more than 30 minutes in any hour.
    § 8.16.070 · code text
    | Single and double | 7 a.m. — 10 p.m. | 50 | 55 | 60 |
  • No more than 55 dBA.
    Applies: Single- and two-family homes, suburban zone, 7 a.m. to 10 p.m.; for more than 30 minutes in any hour.
    § 8.16.070 · code text
    | Single and double | 7 a.m. — 10 p.m. | 50 | 55 | 60 |
  • No more than 60 dBA.
    Applies: Single- and two-family homes, urban zone, 7 a.m. to 10 p.m.; for more than 30 minutes in any hour.
    § 8.16.070 · code text
    | Single and double | 7 a.m. — 10 p.m. | 50 | 55 | 60 |
  • No more than 45 dBA.
    Applies: Multiple and country residential, rural zone, 10 p.m. to 7 a.m.; for more than 30 minutes in any hour.
    § 8.16.070 · code text
    | Residential multiple and country | 10 p.m. — 7 a.m. | 45 | 50 | 55 |
  • No more than 50 dBA.
    Applies: Multiple and country residential, suburban zone, 10 p.m. to 7 a.m.; measured on the receiving property, for more than 30 minutes in any hour.
    § 8.16.070 · code text
    | Residential multiple and country | 10 p.m. — 7 a.m. | 45 | 50 | 55 |
  • No more than 55 dBA.
    Applies: Multiple and country residential, urban zone, 10 p.m. to 7 a.m.; for more than 30 minutes in any hour.
    § 8.16.070 · code text
    | Residential multiple and country | 10 p.m. — 7 a.m. | 45 | 50 | 55 |
  • No more than 50 dBA.
    Applies: Multiple and country residential, rural zone, 7 a.m. to 10 p.m.; for more than 30 minutes in any hour.
    § 8.16.070 · code text
    | | 7 a.m. — 10 p.m. | 50 | 55 | 60 |
  • No more than 55 dBA.
    Applies: Multiple and country residential, suburban zone, 7 a.m. to 10 p.m.; for more than 30 minutes in any hour.
    § 8.16.070 · code text
    | | 7 a.m. — 10 p.m. | 50 | 55 | 60 |
  • No more than 60 dBA.
    Applies: Multiple and country residential, urban zone, 7 a.m. to 10 p.m.; for more than 30 minutes in any hour.
    § 8.16.070 · code text
    | | 7 a.m. — 10 p.m. | 50 | 55 | 60 |

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

What are the noise rules and construction hours in Napa County?

Napa County's code: 7 a.m. to 7 p.m. (Every day; outside these hours, construction tools may not disturb across a residential or commercial property line; utility emergency work or a variance excepted.) (§ 8.16.080); No more than 55 dBA. (Measured inside a neighboring dwelling unit, 10 p.m. to 7 a.m., for more than 5 minutes in any hour.) (§ 8.16.060).

General information, not legal advice.

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Ask GoCodebook how Napa County's noise and construction hours rules apply to your situation and get an answer that cites the section.

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Napa County Municipal Code — full text