Council Bluffs, IA Noise Ordinances: Quiet Hours (2026)
Quiet hours in Council Bluffs, IA, also called the noise ordinance, nighttime noise rules, or residential quiet time, define the hours during which excessive noise is prohibited.
Key Facts
- Night hours
- 10:00 p.m. to 7:00 a.m.
- Day hours
- 7:00 a.m. to 10:00 p.m.
- Residential nighttime limit
- 45 dBA
- Residential daytime limit
- 55 dBA
- Enforcing agency
- Chief building official / police
Summary
In the City of Council Bluffs, Night runs 10:00 p.m. to 7:00 a.m. and residential sound limits drop from 55 to 45 dBA during those hours under CBMC 4.50.080, backing the chapter's per-activity nighttime curfews on noise from radios, construction, deliveries and more.
Day: The period from 7:00 a.m. until 10:00 p.m. local time. ... Night: ... The period from 10:00 p.m. until 7:00 a.m. local time. ... 8.1 Maximum Permissible Sound Levels by Receiving Land Use. It is unlawful for any person to operate or cause to be operated on private property any source of sound in such a manner as to create a sound level which exceeds the limits set forth for the receiving land use category in Table 1 as follows, unless otherwise provided in this chapter, when measured at or within the property boundary of the receiving land use ... Sound Emitting Land-Use Category Sound Receiving Land-Use Category Sound Level Time of Day Sound Level Limit, dBA Leq(1) Residential Residential Daytime 55 Nighttime 45
Full Breakdown
The Noise Control Ordinance codified at CBMC 4.50.030 fixes Day as 7:00 a.m. to 10:00 p.m. and Night as 10:00 p.m. to 7:00 a.m. local time, the clock that every specific curfew in CBMC 4.50.060 is built on. Rather than a single blanket curfew, CBMC 4.50.080 sets the numeric backbone: it is unlawful to operate any source of sound on private property that exceeds the limit set for the receiving land use in Table 1, measured at the receiving property's boundary and no closer than 50 feet from the source.
For a residential source heard on residential land, the limit is 55 dBA in the daytime and drops to 45 dBA at night; commercial-to-residential drops from 60 to 50 dBA, and industrial-to-residential from 65 to 55 dBA. A pure tone or impulsive sound loses another 5 dBA off whatever limit applies. These nighttime limits do not apply to CBMC 4.50.060's own paragraphs (which carry their own night restrictions on radios, loudspeakers, deliveries, construction and domestic tools), interstate railway equipment, farmland and normal agricultural activity, or a permitted electric utility generation facility measured under a separate technique.
The chief building official and Council Bluffs police department enforce the chapter, and any violation is declared a nuisance under CBMC 4.50.110, pulling in the abatement and penalty machinery of CBMC 8.54.
Violations & Fines
Any breach of the Table 1 nighttime sound limits is deemed a nuisance under CBMC 4.50.110, subjecting the violator to CBMC 8.54's penalties: a criminal misdemeanor conviction draws the CBMC 8.02.020 fine, or, if pursued civilly as a municipal infraction, the CBMC 1.95.020 schedule of $750 for a first offense and $1,000 for each later offense plus surcharge and court costs. Each day a violation continues is a separate offense, and the city may order abatement.
Frequently Asked Questions
What hours count as "night" in Council Bluffs?
How much quieter must I be at night?
Who enforces Council Bluffs' noise limits?
Sources & Official References
Other rules in Council Bluffs
How Council Bluffs compares: Cities with the Strictest Noise Ordinances·Compare Council Bluffs to another location·View the Iowa noise ordinances overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.