How the DGT's position has evolved
Current position
Improvements and reforms carried out by the developer in a property pending delivery are considered an increased sale price and are taxed at the reduced rate of 10%. If the general rate has been applied by error, the taxpayer may rectify the tax liabilities within a four-year period. However, if the works are contracted directly by the acquirer with a builder unrelated to the developer, the general rate of 21% applies.
The position on improvements to housing has moved from an interpretation based on invoicing to a clear definition that these form part of the agreed sale price. Clarifications have been added regarding direct contracting by the acquirer and the time limits for rectifying tax liabilities. The criterion regarding compensation in the special agricultural regime remains stable in the determination of the sale price.
Turning points
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Establishes that improvements are taxed at 10% if they are considered an increased sale price, even if they are invoiced separately.
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Introduces the limitation that the reduced rate does not apply to renovations if the construction did not conclude at least two years before the works.
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Clarifies that improvements are part of the agreed sale price and allows for the rectification of tax liabilities if the general rate was applied.
Analysis based on 12 of 12 rulings with a stated position. Updated 27 September 2026.