External wall insulation and insulation works 2026: where most works are carried out
For crews for external wall insulation, insulation and waterproofing, and insulation suppliers: from 1 January to 3 November 2026, 43,648 small-scale works approvals were issued that include works in the category “insulation and waterproofing”, more than in the same period last year (26,438, +65%).
In numbers
- 43,648 acts in 2026 (to 3 November 2026), against 26,438 in the same period last year (+65%).
- 44% of the year's small-scale works approvals (those whose form was read) include such a work.
- By area: Attica 10%, Thessaloniki regional unit 8%, Rest of Greece 82%.
Which works we count
| Code and work | 2026 | 2025 |
|---|---|---|
| (ith) External wall insulation and passive solar | 43,639 | 26,430 |
| (ii) Green roofs | 11 | 8 |
The codes are those of the standardised catalogue of small-scale works on the approval form (Greek-alphabet letters, written here in Latin letters).
By month
| Month | 2025 | 2026 |
|---|---|---|
| January | 1,583 | 2,173 |
| February | 1,973 | 2,914 |
| March | 2,059 | 5,481 |
| April | 2,464 | 6,809 |
| May | 3,418 | 5,963 |
| June | 2,909 | 7,925 |
| July | 3,316 | 6,218 |
| August | 2,149 | 1,369 |
| September | 3,741 | 2,278 |
| October | 2,662 | 2,329 |
| November | 2,461 | 189 (to 3 November) |
| December | 2,105 | – |
The municipalities with the most works
| Municipality | 2026 | 2025 | Change |
|---|---|---|---|
| Larissa | 2,196 | 634 | +246% |
| Trikala | 1,545 | 435 | +255% |
| Volos | 1,466 | 432 | +239% |
| Ioannina | 1,383 | 787 | +76% |
| Karditsa | 1,197 | 471 | +154% |
| Kastoria | 998 | 310 | +222% |
| Eordaia | 954 | 274 | +248% |
| Katerini | 744 | 261 | +185% |
| Lamia | 735 | 245 | +200% |
| Patras | 720 | 731 | −2% |
| Thessaloniki | 705 | 734 | −4% |
| Alexandroupoli | 683 | 414 | +65% |
| Serres | 674 | 379 | +78% |
| Xanthi | 661 | 314 | +111% |
| Veria | 652 | 363 | +80% |
| Agrinio | 641 | 509 | +26% |
| Kavala | 580 | 362 | +60% |
| Pella | 573 | 321 | +79% |
| Florina | 563 | 125 | +350% |
| Elassona | 541 | 171 | +216% |
Same period each year: 1 January to 3 November.
And the new apartment buildings
Every new apartment building needs thermal insulation of the building envelope and waterproofing of the roof, according to the energy performance study. In 2026 (to 3 November 2026), 929 new apartment buildings received a first building permit across the country. See the new apartment buildings of 2026 or open the map to find projects in your area.
How we count
The works come from the Small-Scale Building Works Approvals (Law 4759/2020) that the Technical Chamber of Greece (TEE) posts on Diavgeia, based on the standardised catalogue of works on the form. An act may list more than one work, so it counts in each relevant category. We count the acts whose form was read (95% of the year's approvals). Source: acts of the Technical Chamber of Greece (TEE) on Diavgeia, to 3 November 2026. An approval does not mean that the work has been done or commissioned.