Construction Cost Index for buildings, September 2026
Nearly unchanged Construction Cost Index in September 2026
Statistical news from Statistics Sweden 2026-10-15 8.00
The Construction Cost Index for multi-dwelling buildings increased by 0.1 percent in September compared with August 2026 (increased 0.6 percent in August 2026). The annual rate of change in the Construction Cost index was 3.9 percent in September, compared with the corresponding month in 2025 (3.5 percent in August 2026).
In brief
- The costs of transport increased by 2.5 percent in September 2026 compared with August 2026 and were 9.3 percent higher than in September 2025.
- The cost of diesel oil increased by 12.0 percent in September 2026 compared with August 2026 and was 35.3 percent higher than in September 2025.
- The cost of electricity increased by 10.9 percent in September compared with August 2026 and was 8.7 percent higher than in September 2025.
- Interest costs increased by 0.1 percent in September compared with August 2026 and were 3.3 percent higher than September 2025.
Construction Cost Index for multi-dwelling buildings, excl. wage drift and value-added tax
| Index | Change in percent | ||
|---|---|---|---|
| September | August 2026– September 2026 |
September 2025– September 2026 |
|
| Contractors' costs (82%) | 151.8 | 0.1 | 4.1 |
| Construction clients' costs (18%) | 177.5 | -0.1 | 3.0 |
| Total Construction cost index (100%) | 156.4 | 0.1 | 3.9 |
Changes in the last month
The Construction Cost Index for multi-dwelling buildings increased by 0.1 percent between August and September 2026. The contractors’ costs rose by 0.1 percent and the construction clients’ cost fell by 0.1 percent. These two groups account for 82 percent and 18 percent, respectively, of the Construction Cost Index.
Costs in the group ‘transport, fuel and electricity’ increased by 5.0 percent. Within that group, the cost of electricity rose by 10.9 percent and the cost of diesel oil by 12.0 percent. The cost of transports also rose, by 2.5 percent. Contractors’ overhead costs decreased by 0.1 percent. Costs of machinery and costs for ‘wages and salaries’ were unchanged between August and September 2026.
Contractors’ costs for building materials decreased by 0.3 percent in September 2026. Among the building material groups, the costs of reinforcement steel rose the most by 1.5 percent. The costs of other building materials and iron and steel products (including reinforcement steel) rose by 1.0 and 0.7 percent respectively. The building materials that fell the most in price compared to August 2026 were the costs of woodwork and wood products, which fell by 2.4 percent and 1.4 percent respectively. The costs of all other building materials decreased by at most 0.6 percent, except material for painting and white goods that were unchanged and rose slightly between August and September 2026.
Construction clients’ costs decreased by 0.1 percent in September 2026. These costs consist of interest and credit costs, planning costs, and central administration costs. The decrease was mainly due to lower central administration costs, which fell by 0.3 percent.
Changes in the last year
The Construction Cost Index for multi-dwelling buildings increased by 3.9 percent between September 2025 and September 2026. Contractors’ costs rose by 4.1 percent, which led to an upward contribution to the Construction Cost Index of 3.3 percentage points. Construction clients’ costs increased by 3.0 percent, which led to an upward contribution to the Construction Cost Index of 0.6 percentage points.
Contractors’ costs for ‘wages and salaries’ and overhead costs both increased, by 2.7 percent and 3.0 percent, respectively. Costs for machinery increased with 0.1 percent between September 2025 and September 2026. The costs for ‘transport, fuel and electricity’ increased by 11.5 percent compared to September 2025. Within this group the costs of diesel oil increased by 35.3 percent, while the cost of transport and electricity increased by 9.3 and 8.7 percent respectively.
Contractors’ costs for building materials increased by 4.9 percent between September 2025 and September 2026. Among the building material groups, the costs of floor material rose the most by 9.6 percent. Subsequently, reinforcement steel and plumbing material increased by 8.9 and 8.1 percent, respectively. All other material groups increased by up to 6.1 percent. No building materials had falling costs in September 2026 compared to September 2025.
Construction clients’ costs increased by 3.0 percent. Among the construction clients’ costs, the costs for official employee wages, according to collective agreements increased by 3.7 percent, while the costs for interests increased by 3.3 percent. The remaining costs rose by between 1.7 and 2.8 percent.
Developments in various production factors September 2025–September 2026
Changes by product type, September 2026
| Goods | Change in percent | |
|---|---|---|
| August 2026– September 2026 |
September 2025– September 2026 |
|
| Concrete products | -0.1 | 5.2 |
| Wood products | -1.4 | 0.4 |
| Woodwork | -2.4 | 0.7 |
| Iron and steel* | 0.7 | 6.1 |
| Reinforcement steel | 1.5 | 8.9 |
| White goods | 0.3 | 0.8 |
| Floor material | -0.3 | 9.6 |
| Material for painting | 0.0 | 5.0 |
| Plumbing material | -0.6 | 8.1 |
| Electric material | -0.3 | 5.6 |
| Other building materials** | 1.0 | 4.5 |
| Total building materials | -0.3 | 4.9 |
Developments in various building products September 2025–September 2026
Changes for users retrieving data via the API
In the autumn of 2025, PxWebApi v1 was replaced by the new PxWebApi v2. PxWebApi v1 will remain operational until the turn of the year 2026/2027, after which it will no longer be available. For further information and guidance on the transition, see: