A perfect base is essential to ensure the best result after installing the padel court. These are some recommendations to get the perfect ring.
The fastest, cheapest, strongest and easiest solution is to build a semi-floated concrete base (not very smooth) that serves both to install the metal structure and the grass.
For rapid drainage, it is preferable to build a porous level base with good planimetry with a perimeter concrete footing to install the metal structure. It is important to take measures to prevent erosion under the porous base.
(except clay courts)
It is possible to convert tennis courts into padel courts taking advantage of the space without great expenses.
If the tennis court has a soft base, it will be necessary to build a perimeter concrete foundation to install the metal structure.
If the 20 x 10 meter interior rectangle has good planimetry, the lawn can be installed perfectly.