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Lucas Keizer

Lucas Keizer

Founder and senior acoustic consultant

Lucas Keizer is the founder of KGI Groep (Kenniscentrum Geluidsisolatie) and has worked as an independent acoustic consultant since 1994. He has overseen more than 2,500 projects and is the author of NHR-ACOUSTICS-01:2025, the international guideline for acoustic comfort in hotels.

LinkedIn profile
Service area
Benelux
Projects delivered
2,500+
Active since
1994
Measurement equipment
Class 1 (Svantek)

Expertise

  • Acoustics
  • Sound insulation
  • Noise measurements
  • NEN 5077
  • NEN-EN-ISO 16283
  • NEN 1070
  • NEN-EN 12354
  • Building acoustics
  • Hotel acoustics

Collaborations

Works with DAS Rechtsbijstand, Achmea Rechtsbijstand and ARAG as an independent expert in noise disputes. Carries out acoustic research for municipalities, environmental agencies and housing associations across the Benelux.

Publications and media

External publications and guidelines that cite Lucas Keizer's expertise or that he authored.

  • In the mediaTrouw · 2026

    Zelfs op fluisterniveau maakt de warmtepomp van Julia nog net te veel lawaai

    Cited on heat-pump noise and the statutory 40 dB limit at neighbouring dwellings.

    Read the article
  • In the mediaMisset Horeca · 2026

    Geluidsnormen in de horeca: hoe ondernemers boetes voorkomen

    Featured as acoustic expert on noise regulations in hospitality and how operators avoid fines.

    Read the article
  • AuthorKGI Groep · 2025

    NHR-ACOUSTICS-01:2025, richtlijn voor akoestisch comfort in hotels

    Author of the international guideline for acoustic comfort in hotels (class A and B).

    View the publication
  • AuthorVastgoed Journaal · 2026

    Akoestiek als blinde vlek in de vastgoed businesscase

    Guest contribution on acoustics as an underestimated factor in the real-estate business case, with insights from thirty years of acoustic research.

    Read the article
  • AuthorAdvocatie · 2026

    Geluidsoverlast bewijzen: waarom een NEN 5077 meting het verschil maakt bij de rechter

    Professional contribution on how an independent NEN 5077 measurement turns subjective noise complaints into objective evidence that courts accept.

    Read the article
  • AuthorMr. Online · 2026

    Twee groeiende categorieën geluidsgeschillen: warmtepompen en contactgeluid bij zwevende vloeren

    Guest contribution in the legal trade journal Mr. Online on the two fastest-growing categories of noise disputes (heat pumps and impact noise from floating floors) and the role of objective measurements in establishing evidence.

    Read the article
  • AuthorDoof.nl · 2026

    Warmtepompen en laagfrequent geluid: de bromtoon die je niet kunt negeren

    Contribution on low-frequency noise from heat pumps: why a standard dB(A) measurement fails to capture the hum, and what steps affected residents can take.

    Read the article

Need an independent acoustic assessment?

KGI Groep measures in line with NEN 5077 and delivers reports that hold up towards an owners' association, municipality, insurer or court.

Schedule a free consultationor call +31 (0)20 808 70 90