BREEAM

BREEAM (Building Research Establishment Environmental Assessment Method) stands as the world’s longest-established system for evaluating building sustainability. While core categories like Hea 05 (Acoustic Performance) and Pol 05 (Noise Mitigation) remain consistent across the globe, the specific technical benchmarks are derived from the national standards of the UK, Germany, and the US.

What is BREEAM?

BREEAM is the primary sustainability assessment method for buildings in Europe and is increasingly adopted in North America. While developed by the UK-based Building Research Establishment (BRE), its acoustic criteria are tailored to the specific regulatory landscapes of different regions. In the United Kingdom, the framework aligns with Building Regulations Part E and BS 8233, necessitating rigorous post-construction testing to verify indoor ambient noise levels and sound insulation. In Germany, the International scheme incorporates DIN 4109 standards, ensuring the method remains competitive with local systems by meeting or exceeding strict national technical norms. Within the United States, BREEAM USA utilizes ANSI/ASA and ASTM protocols, frequently focusing on existing assets to assess operational acoustic comfort, such as HVAC noise and speech privacy.

For new designs, acoustic models ensure compliance before construction begins, while for existing buildings, on-site measurements verify that noise levels do not exceed required limit values. These acoustic assessments are a mandatory component of the full certification process, balancing ecological goals with occupant well-being by controlling reverberation times and sound transmission. By integrating established regional benchmarks—such as British Standards, German DIN norms, and American ANSI protocols—the method provides a globally recognized framework that remains technically relevant to the local infrastructure of each country.

What are the requirements for buildings during BREEAM certification?

BREEAM certification evaluates buildings across ten weighted categories—Management, Health and Wellbeing, Energy, Transport, Water, Materials, Waste, Land Use and Ecology, Pollution, and Innovation—to determine a final score ranging from Pass to Outstanding. Within the Health and Wellbeing category (Hea 05), buildings must meet specific acoustic performance standards, such as those defined by BS 8233 in the UK, DIN 4109 in Germany, or ANSI/ASA in the US, covering sound insulation, indoor ambient noise levels, and reverberation times. While new constructions rely on design modeling and post-construction testing to verify compliance, existing buildings undergo on-site measurements to ensure operational noise does not exceed regional limit values. This holistic approach awards credits for exceeding local minimum building codes, ensuring that the environmental goals of the certification are balanced with occupant comfort and technical efficiency.

Why is it worth having a BREEAM certificate?

A BREEAM certificate significantly enhances property value and marketability by providing a third-party guarantee that a building is energy-efficient, environmentally safe, and optimized for occupant comfort. In the UK, Germany, and the US, certification acts as a mark of quality assurance, signaling that high-class experts have met rigorous benchmarks such as BS 8233, DIN 4109, or ANSI standards to reduce operational costs and environmental impact. Beyond ecological benefits, these buildings often command higher rents and lower vacancy rates because they provide superior indoor air quality and acoustic performance, making them more attractive to institutional investors and health-conscious tenants. By exceeding standard building codes, a BREEAM-rated asset future-proofs against tightening environmental regulations and increases its long-term investment appeal.

What BREEAM rating can a building achieve?

BREEAM buildings are awarded one of six ratings based on their total percentage score: Outstanding (≥85%), Excellent (≥70%), Very Good (≥55%), Good (≥45%), Pass (≥30%), or Unclassified (<30%). Achieving the highest tiers—particularly “Outstanding” and “Excellent”—is increasingly sought after in the UK, Germany, and the US as it signals a building’s elite status in the global real estate market. To reach these top grades, projects must not only accumulate points across the ten weighted categories but also satisfy strict “minimum standards” in areas like energy, water, and management, which are mandatory regardless of the overall score. These high ratings often rely on meeting rigorous acoustic benchmarks, such as those found in BS 8233, DIN 4109, or ANSI standards, ensuring that the building’s environmental efficiency is matched by high-quality occupant comfort.

What buildings are covered by BREEAM?

BREEAM certification applies to a diverse range of assets through specialized schemes, covering buildings in the design phase, renovations, districts in the planning phase, and existing operational buildings. These schemes, including New Construction, Refurbishment & Fit-Out, Communities, and In-Use, are adapted to local standards for various property types such as offices, industrial, retail, and residential, spanning international markets. You can learn more about these standards on the BREEAM website.

Acoustics in BREEAM certification

Acoustic credits in BREEAM are primarily divided into environmental impact and occupant comfort, categories that are grounded in regional standards like BS 8233 (UK), DIN 4109 (Germany), and ANSI/ASA (US). The Pol 05 (formerly Pol 08) criteria focus on mitigating noise pollution emitted from the building to the surrounding environment, requiring that noise levels from new sources do not exceed the existing background noise levels at the nearest sensitive receptors. Meanwhile, the Hea 05 (formerly Hea 13) category addresses internal acoustic quality, mandating specific benchmarks for sound insulation between rooms, indoor ambient noise levels from mechanical systems, and reverberation times to ensure speech intelligibility and privacy. For buildings in the UK, Germany, and the US, a Suitably Qualified Acoustician (SQA) must verify these parameters through design modeling or on-site testing to secure the associated credits toward the final certification score.

Why check acoustic parameters according to BREEAM

Checking acoustic parameters according to BREEAM is essential because the framework mandates the involvement of a Suitably Qualified Acoustician (SQA) to integrate acoustic planning into the earliest design stages, ensuring compliance with standards like BS 8233 in the UK, DIN 4109 in Germany, or ANSI/ASA in the US. By addressing room acoustics during the design phase, developers can proactively identify noise sources and implement cost-effective structural or material solutions—such as optimized sound insulation or reverberation control—that are often impossible or prohibitively expensive to retrofit. This process not only secures critical credits for certification but also guarantees a high-performance environment that enhances occupant well-being and productivity while preventing noise pollution from impacting the local community.

What professional qualifications are mandatory for an acoustician to be recognized under BREEAM?

To be recognized as a Suitably Qualified Acoustician (SQA) under the Hea 05 acoustic performance criteria, an expert must possess a formal higher education degree in acoustics and documented professional experience of at least three years within the previous five years. In the UK, this usually requires corporate membership in the Institute of Acoustics (IOA) or employment by an ANC-accredited firm, while in Germany, the specialist must demonstrate technical expertise aligned with VDI or DIN 4109 standards. In the US, qualifications are typically verified through membership in the Institute of Noise Control Engineering (INCE) or via a Professional Engineer (PE) license with a focus on ANSI/ASTM acoustic protocols. Although a non-SQA may perform the underlying technical work, a verified SQA must review and formally sign off on all designs and measurements to ensure the building qualifies for the associated sustainability credits.

What technical procedures and standards are required to verify acoustic performance for BREEAM certification?

BREEAM acoustic certification requires rigorous verification of indoor ambient noise levels (LAeq,T) and sound insulation between acoustically sensitive rooms—such as offices, conference rooms, and canteens—following established international standards like ISO 16283 and EN ISO 717-1. In the UK, these measurements are grounded in BS 8233 and Building Regulations Part E, while in Germany, they must satisfy the stringent requirements of DIN 4109, and in the US, they align with ANSI/ASA or ASTM protocols. Testing must be conducted in completed but unfurnished rooms, typically targeting an 8-hour representative period between 9:00 and 17:00 to accurately assess the equivalent sound level and ensure privacy through high sound insulation. By utilizing these standardized measurement techniques, a Suitably Qualified Acoustician confirms that the building meets the specific decibel thresholds and reverberation targets required to secure Hea 05 credits across these diverse regional markets.

What are the guidelines for noise emissions to the environment?

BREEAM guidelines for noise attenuation (Pol 05/08) require an assessment of all noise-sensitive receptors—such as residential buildings, hospitals, and schools—located within an 800-meter radius of the site. To secure credits in the UK, Germany, and the US, the emitted sound level must not exceed the pre-existing background noise level by more than 5 dB during the day (07:00–22:00) or 3 dB at night (22:00–07:00). These assessments adhere to measurement standards, specifically BS 4142 and BS 7445 in the UK, while international projects often utilize ISO 1996 or equivalent national norms like DIN 45645 in Germany and ANSI S12.9 in the US. If a building contains no external noise sources, such as cooling towers or exhaust fans, a Suitably Qualified Acoustician may provide a formal statement to omit measurements, though they must still confirm the absence of impact to maintain the building’s environmental compliance.

How does BREEAM define and categorize acoustically sensitive rooms?

Acoustically sensitive rooms are designated spaces where speech privacy, high concentration, and low ambient noise levels are critical to occupant function. These primarily include private offices, meeting rooms, consultation rooms, lecture halls, and study areas, as defined under the Hea 05 (Acoustic Performance) criteria. In the UK, these designations adhere to BS 8233 and BB93 (for schools), while in Germany, they align with DIN 4109 and in the US with ANSI/ASA standards. While the BREEAM manual provides a standard list, the building designer—in collaboration with a Suitably Qualified Acoustician—has the professional discretion to identify additional rooms as acoustically sensitive based on their specific intended use. This classification is essential because it dictates the mandatory sound insulation targets and reverberation time limits required to secure certification credits across these different regional markets.

How are indoor noise and insulation measurements conducted to satisfy BREEAM requirements?

Indoor noise measurements under BREEAM are used to verify that ambient levels from both internal mechanical systems and external environmental sources are within acceptable limits. Verification requires testing in at least four rooms per building type where the highest noise levels are expected, with measurements lasting between 5 and 30 minutes to ensure a representative sample of the acoustic environment. If a room is designed for natural ventilation, measurements must be taken with windows open; however, internal office equipment is excluded from these background noise calculations. Additionally, sound insulation must be verified across at least four pairs of the most noise-exposed rooms using ISO 16283 or equivalent regional protocols to confirm that the partition performance meets the specific decibel targets required for the final certification score.

How does BREEAM treat rooms used for speech work?

In BREEAM certification, rooms designated for speech, music, or high-intelligibility work must undergo specific reverberation time measurements at middle frequencies to satisfy Hea 05 requirements, aligned with regional standards such as BS 8233 in the UK, DIN 18041 in Germany, and ANSI/ASA S12.60 in the US. General speech rooms require reverberation times to scale with volume, typically ranging from 0.4 s for 50 m³ up to 1.0 s for 2000 m³, while music playback areas allow for longer durations between 1.0 s and 1.6 s. Specialized spaces carry unique mandates: lecture halls must remain below 0.8 s for fewer than 50 people and 1.0 s for larger groups, recording studios must fall between 0.6 s and 1.2 s, and dedicated listening rooms require a strictly controlled environment below 0.5 s. These precise thresholds ensure that ecological building goals are balanced with the acoustic clarity necessary for the specific function of each sensitive space.

What are the background noise levels allowed by BREEAM certification?

BREEAM certification mandates strict background noise level limits to ensure occupant comfort, depending on the project’s location. The most stringent category applies to lecture halls, which must maintain a noise level below 35 dB to ensure high speech intelligibility. General-purpose rooms, small office spaces, and meeting rooms are required to stay below 40 dB, while larger or higher-activity areas such as open-plan offices, kitchens, restaurants, and commercial spaces are permitted a broader range between 40 and 55 dB. These thresholds, verified by a Suitably Qualified Acoustician (SQA) through representative measurements, are critical for securing Hea 05 credits and ensuring the building’s operational environment matches its sustainable design goals.

Does the SVANTEK Research Laboratory perform BREEAM certification in the field of acoustics?

In Poland, the SVANTEK Measurements Laboratory prepares projects, measurements and reports for BREEAM certification. Our acousticians meet SQA requirements and have the appropriate experience in measurements for BREEAM certification. Reports prepared for certification purposes are complete and meet all requirements.