A built-in pool is technically a civil work with its own hydraulic and electrical installations, built on private land. In every municipality in the province it is always classified as major works: it requires a signed technical project, an express municipal licence and, at completion, a final works certificate. The result has little in common with a prefabricated pool: the shell is reinforced concrete with integrated pipe sleeves, the interior finish is chosen between mosaic, porcelain or reinforced liner, and the filtration is sized to the real volume of the shell and the intended use.
Before designing, we verify four plot constraints that decide whether the project is viable as planned or requires changes: the mandatory setbacks to boundaries set by municipal planning, machinery access for mechanical excavation, the type of ground (water table, rock, expansive clays) and the available supplies. On plots without direct access we work with smaller equipment and longer timelines; where the water table is high we reinforce the shell to resist hydrostatic uplift with the pool empty.
Execution runs through five phases with clear dependencies: setting out and licence, earthworks and shell, hydraulic installation, waterproofing and finish, and surround with commissioning. A standard residential pool typically runs 8 to 14 weeks of site work, not counting the previous project and licence phase. The plant room is sized to the shell volume: circulation pump, sand or glass filter and treatment system (salt chlorination is the most requested option on the Costa del Sol).
