Technical Column
Is a construction license required for anechoic chamber installation work?
May 27, 2025
- HBK × SONORA Acoustic Measurement Solution Official Website
- Technical Column
- Is a construction license required for anechoic chamber installation work?
Acoustic Power Measurement
An anechoic chamber installation is considered a type of construction work.
To undertake construction work, a construction license is required under the Construction Business Act.
However, if the contract amount is less than 5 million yen (including tax) and the work falls under the category of “minor construction work,” a construction license is not required.
For anechoic chambers with a contract amount under 5 million yen, no construction license is necessary.
However, if the amount exceeds 5 million yen, operating without a license would constitute a violation of the Construction Business Act and may result in administrative penalties.
Furthermore, there are two types of construction licenses: “General Construction License” and “Specified Construction License.”
If the contract amount exceeds 5 million yen but is less than 40 million yen, a General Construction License is required.
If the total contract amount for subcontracted construction work exceeds 40 million yen, a Specified Construction License is necessary.
Summary
- Under 5 million yen: No construction license required
- 5 million yen to under 40 million yen: General Construction License required
- 40 million yen or more: Specified Construction License required
Moriya Corporation holds a valid construction license.
For more details, please refer to “[PDF File] Moriya Corporation Construction Business License List.“
Latest Posts in Technical Column
-
2025.12.06
Integrated Design of Anechoic Chambers with Auxiliary Equipment — Balancing Silence and Functionality — -
2025.11.30
Modular Semi-Anechoic Chambers — A Flexible Solution for Deployable Acoustic Testing — -
2025.11.25
Measuring Silence: How Anechoic Chambers Support Industrial Quality -
2025.11.18
Designing for Reproducibility — Environmental Stabilization in Acoustic Measurement — -
2025.11.13
The New Generation of Mobile Acoustic Measurement — Field Accuracy for Building and Environmental Sound Testing — -
2025.11.07
The Design Logic Behind the Inverse Square Law Zone in Anechoic Chambers -
2025.10.31
Acoustic Cameras and Anechoic Chambers — Visualizing Silence for Sound Source Analysis — -
2025.10.25
Integrated Acoustic and Vibration Analysis — Designing the Data Flow That Connects Measurement and Insight— -
2025.10.20
End-of-Line Acoustic Testing — Quantifying Quietness in Mass Production — -
2025.10.14
Designing the Future of Silence — The Fusion of Digital Acoustic Measurement and Spatial Engineering —
Contact Us
- Contact us by email
-
- Contact us by phone
-
Moritani Shokai
(Machinery Department No. 2, Tokyo Head Office)
Introduction of the Manufacturer
-
Hottinger Bruel & Kjaer
HHBK is a merger of two companies: Brüel & Kjær of Denmark and HBM of Germany.
Brüel & Kjær is one of the world’s leading manufacturers of acoustic and vibration measurement instruments, known as a total measurement chain supplier.Learn more about HBK
-
Sonora Technology Co., Ltd.
Sonora Technology is a leading Japanese manufacturer of industrial anechoic chambers and anechoic boxes.
From design and manufacturing to installation and acoustic performance assurance, Sonora provides fully integrated solutions to build complete acoustic measurement environments from the ground up.Learn more about Sonora
Contact / Request Brochure
For inquiries or consultations regarding the total solutions provided by HBK × Sonora, please feel free to contact us using the Contact button.
If you would like a brochure sent by mail, please use the Request Brochure button.