The building cost index compiled in the middle of August 2018 is 139.9 points (December 2009=100), the same as in the previous month. In the last twelve months the building cost index has increased by 5.2%. The index applies to September 2018.
| The Icelandic building cost index 2017–2018 | |||||||
| Month of application January 2010=100 | Reference month December 2009=100 | ||||||
| Annualized rates | |||||||
| Monthly changes | Latest month, % | Latest 3 months, % | Latest 6 months, % | Latest 12 months, % | |||
| 2017 | |||||||
| September | 133.0 | 135.1 | 1.5 | 20.1 | 11.1 | 8.0 | 3.0 |
| October | 135.1 | 135.8 | 0.5 | 6.2 | 9.9 | 8.9 | 3.8 |
| November | 135.8 | 136.1 | 0.3 | 3.2 | 9.6 | 7.0 | 4.5 |
| December | 136.1 | 136.5 | 0.2 | 3.0 | 4.1 | 7.6 | 4.8 |
| 2018 | |||||||
| January | 136.5 | 137.0 | 0.4 | 4.5 | 3.6 | 6.7 | 5.1 |
| February | 137.0 | 136.9 | 0.0 | -0.5 | 2.3 | 5.9 | 5.1 |
| March | 136.9 | 137.0 | 0.1 | 1.0 | 1.7 | 2.9 | 5.4 |
| April | 137.0 | 137.4 | 0.3 | 3.2 | 1.2 | 2.4 | 5.6 |
| May | 137.4 | 139.1 | 1.2 | 15.9 | 6.5 | 4.4 | 5.7 |
| June | 139.1 | 139.2 | 0.1 | 1.3 | 6.6 | 4.1 | 5.8 |
| July | 139.2 | 139.9 | 0.5 | 5.9 | 7.5 | 4.3 | 5.5 |
| August | 139.9 | 139.9 | 0 | -0.1 | 2.3 | 4.4 | 5.2 |
| September | 139.9 | . | . | . | . | . | . |