Carnival is one of the most festive times of the year, marked by music, gatherings and celebrations. For condominium residents, however, this period can highlight a perennial conflict: noise that goes beyond the limits of peaceful coexistence. While many celebrate in the streets, condominiums face recurring complaints about loud sound, prolonged parties and activities that disturb the peace. But this reality goes far beyond Carnival: excessive noise can generate daily conflicts, affect quality of life and lead to legal consequences for residents and property managers. Understanding the rules, rights and duties is essential for condominium management throughout the year.

Noise and legislation: a patchwork of complementary rules

In Brazil, there is no single law formally known as the "Silence Law", but rather a set of federal, municipal and internal condominium regulations that together address the issue of noise and disturbance of the peace.

The Civil Code (Articles 1,277 and 1,336) establishes that the owner or occupant of a property has the right to have their peace, health and safety protected, and that a unit owner must not use their unit in a way that harms these rights of neighbours. These rules form the basis for condominiums to regulate coexistence with regard to noise and apply sanctions when necessary.

In addition, the Law of Criminal Misdemeanours (Article 42, Decree-Law No. 3,688/1941) provides that "disturbing the work or peace of others" — through shouting, uproar or misuse of sound equipment — may be considered a misdemeanour, punishable by simple imprisonment or a fine.

Technically, ABNT standard NBR 10151/2000 defines noise parameters for residential areas: levels of up to 55 dB during the day and up to 50 dB at night (which may be extended on public holidays and Sundays). These standards can serve as a reference for measurements and internal decisions, although not all condominiums have decibel meters available.

Setting internal rules: the by-laws and internal regulations

The main tool for regulating noise in condominiums is the Condominium By-laws and Internal Regulations. These documents, approved at a general meeting, should contain clear clauses on:

• Quiet hours — defining periods when noisy activities should be reduced (for example, at night from 10pm to 7am);

• General noise limits — which may incorporate references to ABNT standards or municipal legislation;

• Rules for parties and events in common areas — including volume limits and cut-off times for sound;

• Penalties for non-compliance — such as warnings, fines, suspension of use of common areas;

• Procedures for building work and renovations — also taking into account specific technical standards such as NBR 16,280/2014.

In addition, internal documents cannot be less restrictive than the applicable municipal laws, but may adopt stricter rules if legally approved.

Disclosure and communication: how to inform residents

The mere existence of rules does not guarantee automatic compliance. Property managers should:

• Clearly publicise the rules, preferably at general meetings, by email, on noticeboards and through digital platforms;

• Explain the consequences of infractions — ranging from warnings to fines and other sanctions;

• Remind residents of critical periods — such as Carnival, public holidays, matches or end-of-year parties — when incidents tend to increase;

• Promote educational initiatives on coexistence and respect between neighbours.

This communication not only prevents conflicts but also strengthens a culture of supportive coexistence within the condominium.

Conflict resolution: practical techniques and tools

When complaints arise, the property manager should handle the situation impartially and with a focus on resolution. Some best practices include:

1. Formal recording of complaints — keeping an incident log or digital platform with dates, times and a description of the noise;

2. Polite notification to the offending resident — an initial warning without penalty, focused on resolving the issue without escalation;

3. Application of the penalties provided for — a warning and, if necessary, a condominium fine in accordance with the by-laws;

4. Mediating meetings between neighbours — a joint conversation can facilitate understanding and reduce resentment;

5. Legal consultation — when the conflict is persistent or involves more complex contractual or legal issues.

If the situation escalates beyond the internal sphere, residents can seek assistance from public environmental enforcement bodies or even file a police report for disturbance of the peace when the situation is clear and documented.

Tenant rights and their relationship with lease agreements

This issue is especially important when the noisy unit is occupied by tenants. Under the Tenancy Law (Law 8,245/91, Article 23), the tenant is obliged to fully comply with the condominium's by-laws and regulations, including rules on quiet hours, building work schedules and use of common areas, under penalty of breach of contract.

When noise repeatedly exceeds the standards, this can result in notices, fines and even eviction proceedings for serious breach, with costs attributed to the tenant under the terms of the contract and applicable legislation.

Examples of legislation in major Brazilian cities

In addition to internal rules, many municipalities have their own legislation that complements the framework for coexistence regarding noise:

• São Paulo (SP) — the Urban Silence Programme (PSIU) sets noise parameters measured by the city council, such as 55 dB during the day and 50 dB at night in residential areas, and enables environmental enforcement.

• Goiânia (GO) — the municipal noise regulation defines limits and quiet periods for different residential zones and reinforces the need to respect local rules and the condominium's by-laws.

• Fortaleza (CE) — the municipal noise pollution law defines limits for urban zones and enforcement mechanisms, including specific night-time periods.

• Rio de Janeiro (RJ) — combines noise pollution rules and noise limits in residential areas, applicable to residential buildings, in addition to municipal quiet-hours rules.

• Porto Alegre (RS) — has municipal by-law legislation that addresses noise pollution in urban areas, with limits and enforcement by the city council.

These examples show that, although general parameters exist, each municipality may have its own specifics regarding hours and noise limits, which property managers should know and use to guide residents.

Best practices recommended for property managers

To promote harmonious coexistence and avoid noise-related conflicts, property managers can implement:

• Direct communication channels for noise complaints, clear protocols and follow-up on incidents.

• Educational campaigns on respecting quiet hours, including explanations of schedules and decibel levels.

• Mediators or internal committees to prevent conflicts from escalating immediately.

• Community integration events to strengthen the sense of community and reduce tensions.

Dealing with noise in condominiums requires more than simply imposing rules: it demands an understanding of applicable legislation, alignment between municipal legislation and internal rules, clear communication with residents and a balanced approach between peaceful coexistence and compliance with the rules. Property managers who invest in well-structured rules, disclosure, education and mediation manage not only to reduce conflicts but also to build a healthier, more harmonious residential environment — whether during festive periods such as Carnival or at any other time of year.