How the DGT's position has evolved
Current position
Works that increase the capacity, habitability, or useful life of a property are considered improvements and form part of its acquisition value. Repair and maintenance expenses to maintain current use are not included in said value. The taxpayer must justify the nature of the works through means of proof.
The DGT's position remains constant in classifying extraordinary charges as improvements to land when they are intended for urbanization. The doctrine has moved from focusing on the status of the joint-claimants as entrepreneurs and the application of the taxpayer's investment, to clarifying the treatment of these costs in the acquisition value for Personal Income Tax (IRPF).
Turning points
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Specifies that non-entrepreneur owners acquire the status of entrepreneurs upon paying the first extraordinary charge if their intention is to sell or transfer the land.
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Establishes that urbanization expenses paid through extraordinary charges are considered improvements and must be included in the acquisition value of the land.
Analysis based on 38 of 40 rulings with a stated position. Updated 23 September 2026.