ranQ
ranQ
ranQ
DirectoryIndustriesPlacesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The first Swiss company directory, built to boost AI visibility.

Product
  • Pricing
  • Directory
  • Industries
Company
  • About
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,924 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil Engineering FirmsNeuchâtela21 sàrl
a21 sàrl Logo
Verified· 2 sources

a21 sàrl

Summary

About the company

a21 sàrl is an engineering consultancy providing expert assessments, technical advice, concept development, project management and research. Its services include building physics and construction (acoustics, moisture and hazardous-substance diagnostics), environmental and noise studies, energy and sustainability planning, and training.

AI-generated
Offering

Products & services

Industry:Civil Engineering Firms
✓ Offered5
Energy consulting and expertise
Studies for energy improvement and optimisation, energy balances for building permits, energy concepts, energy-efficiency assessments, renewable energies and solar installations.
Construction consulting and expertise
Private and judicial assessments, building physics, indoor acoustics, thermal envelope, thermography, moisture problems, hazardous substance diagnostics and project management.
Training and supervision
Supervision of traineeships and diplomas, conferences and seminars, technical courses and educational materials on energy, the environment and sustainable development.
Environmental consulting and expertise
Noise protection studies, impact studies, light pollution, electromagnetic fields, air quality, vibrations, waste management and contaminated sites.
Sustainability consulting and expertise
Cité de l’énergie support, monitoring projects for the Société à 2’000 Watt, Agenda 21s, ecobilances, sustainable neighbourhoods, cooperation projects and economic analyses with external costs.
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub
Comparisons

a21 sàrl in comparison

Soon

Industry comparisons are coming soon

We're preparing industry comparisons that rank a21 sàrl by reviews, experience and specialisations.

Is this your company?

Claim the company profile of a21 sàrl to make its contact details visible. With a plan we additionally create and publish industry comparisons, articles and much more.

Secure profile

Location

Rue des Beaux-Arts 21
2000 Neuchâtel

At a glance

Legal form
Limited Liability Company
UID
CHE-115.652.123
Founded
2010 · 16 years
Last commercial register change
May 10, 2010
Employees
1 to 10

Knowledge

No knowledge articles yet

Once a21 sàrl has claimed this profile, we'll publish editorial articles and case studies here together.

Get started

Similar companies

BD
Bureau d'ingénieurs civils Mauler SA
Neuchâtel
PS
PPLUS Sàrl
Neuchâtel
RN
RWB Neuchâtel SA
Neuchâtel
D-
DSI - Ingénieurs civils Sàrl
Neuchâtel
D+
DH + associé atelier d'ingénierie Sàrl
Le Landeron
SS
SALYVA Sàrl
Cortaillod
BD
Bureau d'Etudes Vincent Becker, Ingénieurs SA
Cornaux Ne
DS
Dolima Sàrl
Peseux