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It's brave to go on an adventure alone,
it's still better accompanied...



  • before purchase

  • feasibility and cost

  • energy and thermal

  • humidity and management



  • choice and compatibility of materials

  • implementation techniques



  • follow-up andsupport in the different phases of a project: from the choice of techniques and companies, from the analysis of offers to the achievement


B2B services

  • assistance to architects with specifications

  • technical advice to contractors

Following numerous requests,  Other has set up its a la carte services. You have an idea, des values, a project ? Otra is here to answer it and help you achieve it. 

Actors of tomorrow : Are you building or renovating? We can help you carry out a diagnosis of your property before purchase and make les good choices.  

Grow up in a healthy environment : Do you dream of a healthy home, in harmony with your values? We are here to guide you through theeco conception  of your project and the choice of materials durable

Responsible B2B : Are you a designer, buyer, specifier? We put in place guidance based on trust and transparency to help you transform your habits and finally switch to a world green and responsible. 

Within Otra, we strongly believe in the transversality of knowledge. From various backgrounds, nos collaborators  have been able over the years to collect a expertise and a awareness rare in the sector green construction. They wish the share  through its personalized services.


Together we will go further and guarantee a sustainable future for our future generations.

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