Our legacy



Satisfied customers.
The customers come back to work with us and experience various areas of expertise in ASL.


Energy certificates issued


2015 and 2016 – price awarded by “Construir/Especial Concreta” newspaper


Oversighted constructions by our team

+ 1.500

Projects carried out

The first Portuguese engineering company to obtain ISO 9001:2015 certification

Nacional urban rehabilitation award

ASL was part of a project team (specialties) for the rehabilitation of Instituto Araújo Porto, new headquarters of Misericórdia of Porto, which won the 2017 national urban rehabilitation award, in the category of best intervention in commercial use and services.



Number of rehabilitated fires


Number of rehabilitated buildings

ASL is a recognized player on rehabilitation area.
They trust in our work and turn to us, architects, fellow engineers, promoters and investors for consultancy and elaboration of projects in the various specialties.

We respect the materials and construction methods for the protection and valorization of existing patrimony, ensuring the environmental sustainability.

We are proud of having contributed for the cities regeneration, giving back to the society buildings that were once vacant and lifeless, enabling the creation of housing fulfilling the requirements of comfort, creation of jobs and thus dynamizing the local economy.

Relevant works

Some examples that show our accumulated experience through the years.

Download portfolio