About us

We are specialized in daily cleaning and maintaining commercial premises and facilities.

Alterra Grupa is a private company founded in 2006 in Zagreb. Specialized in daily cleaning and maintaining commercial premises and facilities. With our headquarters in Zagreb, we are able to provide a wide spectrum of maintenance services in all the larger cities of Croatia like Varaždin, Rijeka, Osijek, Zadar, Šibenik, Split and Dubrovnik.

From the very beginning, we have had continual and also controlled business growth. By placing an emphasis on quality of provided services, we contract projects in accordance with our abilities.

The result of many years of strenuous work and commitment to offering best quality services which has successfully raised us above others on the market, we have earned an epithet of providing quality and being a reliable partner which we proudly value every day.

Many years of successfully business operations is also validated by the AA++ creditworthiness excellence certificate (2016./2017./2018./2019./2020./2021.) and Platinum AAA (2022./2023.)

Customer relationships

Proud of the recognition for the quality of our services, we are conscious that the actual cleaning service is just one of many factors which are relevant for the service we provide, and which further raises us above the others.

We closely work with everyone, focusing on client needs, reacting quickly when necessary. All of our clients will agree in one matter: we have a different approach when communicating with them and the speed in resolving issues when necessary.


We guarantee continual quality of our cleaning services. We employ reliable people who pass a number of verification phases.

The integral part of the strategy is also a strict quality control procedure for work performed by workers on-site, with the aim of achieving and maintaining a high standard of service and client satisfaction.

Services provided by all of the workers at the Alterra Grupa company are additionally insured against possible damage, i.e., Insurance against Liability.

We sincerely appreciate your trust in us.