Construction costs in the Basque Country. December 2025
Highlights
Monthly evolution: construction costs in the Basque Country fell by 1.0% compared with November.
Year-on-year evolution: the year-on-year variation rate stood at 3.2%.
Evolution by type of construction work: costs for Building fell month-on-month by 1.0%, and for Civil Engineering by 0.9%.
Statistical analysis
The Construction Costs Index in the Basque Country registered a drop of 1.0% in December 2025 compared with the previous month, according to data produced by Eustat. In year-on-year terms, costs rose by 3.2%
By sector, the monthly evolution indicates a fall in costs for both Building, dropping by 1.0%, and Civil Engineering, with a decline of 0.9%. Compared with December 2024, meanwhile, costs had risen by 3.2% in the Building sector, and by 3.3% in Civil Engineering.
As for raw materials, costs fell by 1.4% compared with the previous month, but nonetheless rose in year-on-year terms by 3.8%. By type, raw materials costs fell in December by 2025 by 1.4% compared with November 2025 in Building, and by 1.2% in Civil Engineering. The year-on-year change, meanwhile, represents an increase in raw material costs of 3.8% for both Building and Civil Engineering.
Labour costs remained constant in month-on-month terms. Compared with December 2024, they rose by 1.7%.
Index of construction costs of the Basque Country. Rates of variation (p). December 2025
| |
Index |
Increase (%) |
| |
|
m/m-1 |
m/m-12 |
| Total |
121.7 |
-1.0 |
3.2 |
| Edification |
121.5 |
-1.0 |
3.2 |
| Ingeniería civil |
122.7 |
-0.9 |
3.3 |
| |
| Raw materials |
122.9 |
-1.4 |
3.8 |
| Edification |
122.6 |
-1.4 |
3.8 |
| Ingeniería civil |
124.1 |
-1.2 |
3.8 |
| |
| Labour |
118.3 |
0.0 |
1.7 |
Base 2021=100
m / m-1 Variation rate of the last observed month (m) compared to the previous month (m-1)
m / m-12 Year-on-year variation rate of the last observed month (m) compared to the same month of the previous year (m-12)
(p)Provisional data
Date January 27, 2026
Source: Eustat. Construction costs index
In December 2025, the greatest increases compared with the previous month were seen in the Manufacture of Material and Electrical Equipment branch, rising by 9.4%. Conversely, Coke Plants and Oil Refining saw a drop of 8.9% in the price of their raw material consumed.
Prices of raw materials consumed in the Basque Country by sector A64. Year-on-year rate of change (p). December 2025
| |
m / m-12 |
| Mining and quarrying |
4.0 |
| Coke and refined petroleum |
-8.9 |
| Manufacture of other non metallic mineral products |
1.8 |
| Manufacture of fabricated metal products, except machinery and equipment |
3.9 |
| Manufacture of electrical equipment |
9.4 |
Base 2021=100
(p)Provisional data
m / m-12 Year-on-year variation rate of the last observed month (m) compared to the same month of the previous year (m-12)
Date January 27, 2026
Source: Eustat. Construction costs index