Building age in the canton of Aargau
Canton of Aargau, 195 municipalities
Building register (GWR) export of September 2026, parcel data of July 2025.
Key figures
- Parcels with a building
- 163’276
- 156’351 of them with a known construction year
- Median construction year
- 1986Switzerland: 1976
- Median building age
- 40 yearsSwitzerland: 50 years
- Built 1960 or earlier
- 22.1%Switzerland: 32.5%
- Built after 2000
- 27.7%Switzerland: 23.3%
About the building stock in the canton of Aargau
The parcel data lists 163’276 parcels with a building in the canton of Aargau. For 156’351 of them (95.8%) the federal building register (GWR) gives a construction year, taken from the newest building on the parcel. The median construction year is 1986, so the median parcel with a building is 40 years old. 22.1% of the parcels with a known year were built in 1960 or earlier and 27.7% after 2000. The largest period is 1981-2000 with 28.9%. For comparison, the median construction year is 1976 in Switzerland. 6’925 parcels with a building have no usable construction year and are left out of the shares.
Construction-year histogram
Parcels with a building by construction period, as a share of the 156’351 parcels with a known year. The periods are not equally long, so read the bars as shares of the stock, not as building activity per year.
- 7.2%before 1920: 7.2%, 11’239 parcels
- 6.2%1920-1945: 6.2%, 9’749 parcels
- 8.7%1946-1960: 8.7%, 13’535 parcels
- 21.3%1961-1980: 21.3%, 33’333 parcels
- 28.9%1981-2000: 28.9%, 45’231 parcels
- 13.4%2001-2010: 13.4%, 21’022 parcels
- 10.7%2011-2020: 10.7%, 16’708 parcels
- 3.5%2021 and later: 3.5%, 5’534 parcels
Building age distribution
The same parcels grouped by the age of their newest building in 2026.
- 66 years or older (built 1960 or earlier)22.1%34’523 parcels
- 46 to 65 years (built 1961-1980)21.3%33’333 parcels
- 26 to 45 years (built 1981-2000)28.9%45’231 parcels
- Up to 25 years (built 2001 or later)27.7%43’264 parcels
How to read these figures
The parcel data links every parcel to the federal building register (GWR). A parcel counts once, with the construction year of its newest building. Where the register gives only a construction period, the middle of the period is used.
The figures count parcels with a building, not individual buildings. A parcel with several buildings counts once, and a parcel without a building is not counted.
Building age is 2026 minus the construction year. Every share divides by the parcels with a known construction year.
Municipalities in the canton of Aargau
| Municipality | Parcels with a year | Median year | 1960 or earlier | After 2000 |
|---|---|---|---|---|
| Aarau | 3’607 | 1965 | 43.3% | 19.6% |
| Wohlen (AG) | 3’312 | 1988 | 22.4% | 24.5% |
| Wettingen | 3’204 | 1965 | 41.0% | 16.8% |
| Brugg | 3’054 | 1975 | 35.2% | 18.5% |
| Baden | 3’000 | 1974 | 38.3% | 14.4% |
| Zofingen | 2’476 | 1971 | 39.1% | 19.9% |
| Oftringen | 2’432 | 1988 | 22.1% | 33.2% |
| Möhlin | 2’397 | 1988 | 17.0% | 32.4% |
| Rothrist | 2’260 | 1988 | 17.5% | 31.4% |
| Gränichen | 2’108 | 1986 | 22.3% | 27.9% |
| Reinach (AG) | 1’952 | 1983 | 28.1% | 24.8% |
| Suhr | 1’800 | 1984 | 26.9% | 24.2% |
| Lenzburg | 1’755 | 1976 | 32.6% | 27.5% |
| Küttigen | 1’725 | 1984 | 22.1% | 28.7% |
| Villmergen | 1’720 | 1991 | 20.3% | 34.5% |
| Muri (AG) | 1’617 | 1988 | 15.6% | 34.1% |
| Obersiggenthal | 1’612 | 1975 | 25.1% | 20.5% |
| Rheinfelden | 1’612 | 1978 | 32.6% | 21.3% |
| Oberentfelden | 1’539 | 1981 | 24.4% | 24.2% |
| Untersiggenthal | 1’532 | 1983 | 20.2% | 23.5% |
| Aarburg | 1’529 | 1979 | 31.5% | 20.5% |
| Seon | 1’510 | 1985 | 22.6% | 27.9% |
| Würenlos | 1’491 | 1985 | 19.1% | 26.3% |
| Buchs (AG) | 1’483 | 1970 | 35.7% | 17.1% |
| Bremgarten (AG) | 1’480 | 1988 | 21.8% | 33.6% |
| Rupperswil | 1’395 | 1988 | 18.4% | 31.2% |
| Kölliken | 1’336 | 1984 | 25.1% | 29.9% |
| Magden | 1’335 | 1987 | 12.7% | 28.7% |
| Windisch | 1’290 | 1970 | 37.9% | 18.6% |
| Brittnau | 1’282 | 1987 | 23.3% | 32.8% |
| Niederlenz | 1’246 | 1983 | 24.9% | 30.7% |
| Frick | 1’239 | 1993 | 17.1% | 37.4% |
| Möriken-Wildegg | 1’237 | 1988 | 20.2% | 33.1% |
| Gebenstorf | 1’208 | 1983 | 18.2% | 26.7% |
| Muhen | 1’206 | 1988 | 20.7% | 30.1% |
| Beinwil am See | 1’162 | 1984 | 29.3% | 32.7% |
| Würenlingen | 1’160 | 1988 | 16.6% | 26.6% |
| Erlinsbach (AG) | 1’156 | 1988 | 19.6% | 32.4% |
| Sins | 1’139 | 1989 | 18.4% | 31.3% |
| Safenwil | 1’133 | 1993 | 17.0% | 35.6% |
| Ehrendingen | 1’116 | 1983 | 15.3% | 28.5% |
| Seengen | 1’081 | 1994 | 15.0% | 39.3% |
| Strengelbach | 1’067 | 1983 | 24.4% | 25.7% |
| Schöftland | 1’049 | 1989 | 22.4% | 31.6% |
| Zufikon | 1’047 | 1983 | 6.7% | 26.5% |
| Laufenburg | 1’042 | 1983 | 31.3% | 25.0% |
| Gipf-Oberfrick | 1’037 | 1993 | 10.2% | 33.1% |
| Murgenthal | 1’029 | 1985 | 27.7% | 27.0% |
| Mellingen | 1’024 | 1984 | 21.3% | 24.5% |
| Fislisbach | 1’008 | 1983 | 14.3% | 20.3% |
| Kaisten | 1’008 | 1988 | 21.2% | 27.8% |
| Klingnau | 978 | 1975 | 27.9% | 21.6% |
| Oberrohrdorf | 976 | 1976 | 8.0% | 18.9% |
| Spreitenbach | 973 | 1988 | 17.9% | 28.9% |
| Merenschwand | 972 | 1994 | 12.2% | 36.4% |
| Schinznach | 972 | 1979 | 27.9% | 20.9% |
| Unterentfelden | 964 | 1977 | 23.2% | 27.3% |
| Mettauertal | 959 | 1988 | 24.6% | 29.8% |
| Rudolfstetten-Friedlisberg | 945 | 1978 | 15.0% | 17.6% |
| Döttingen | 924 | 1975 | 30.1% | 24.7% |
| Bergdietikon | 912 | 1981 | 15.0% | 20.9% |
| Berikon | 907 | 1988 | 10.8% | 23.4% |
| Sarmenstorf | 893 | 1993 | 16.8% | 37.4% |
| Schafisheim | 892 | 1988 | 16.7% | 28.9% |
| Unterkulm | 887 | 1975 | 28.7% | 20.4% |
| Meisterschwanden | 884 | 1993 | 15.0% | 37.1% |
| Lengnau (AG) | 866 | 1988 | 16.4% | 26.4% |
| Staufen | 858 | 1981 | 27.2% | 28.6% |
| Hunzenschwil | 855 | 1994 | 13.5% | 39.3% |
| Endingen | 853 | 1991 | 15.2% | 25.2% |
| Hägglingen | 847 | 1988 | 20.5% | 33.1% |
| Zeiningen | 838 | 1993 | 16.8% | 36.2% |
| Leuggern | 829 | 1988 | 16.3% | 21.1% |
| Böttstein | 826 | 1988 | 18.3% | 18.8% |
| Birmenstorf (AG) | 815 | 1986 | 20.4% | 24.3% |
| Boswil | 811 | 1988 | 19.0% | 28.9% |
| Waltenschwil | 803 | 1989 | 11.2% | 30.5% |
| Ennetbaden | 793 | 1965 | 42.7% | 17.4% |
| Niederwil (AG) | 792 | 1988 | 9.3% | 28.0% |
| Gontenschwil | 787 | 1975 | 34.6% | 21.3% |
| Neuenhof | 786 | 1975 | 34.0% | 18.6% |
| Niederrohrdorf | 778 | 1983 | 16.8% | 30.1% |
| Birr | 772 | 1993 | 7.9% | 32.1% |
| Kaiseraugst | 770 | 1998 | 14.7% | 44.0% |
| Oberkulm | 755 | 1983 | 23.4% | 22.3% |
| Dottikon | 752 | 1985 | 20.3% | 26.3% |
| Othmarsingen | 749 | 1993 | 18.3% | 38.9% |
| Wallbach | 744 | 1993 | 18.0% | 33.9% |
| Villigen | 737 | 1983 | 28.4% | 24.6% |
| Hausen (AG) | 730 | 1989 | 11.9% | 26.2% |
| Lupfig | 727 | 1994 | 12.5% | 36.6% |
| Widen | 716 | 1983 | 11.0% | 13.7% |
| Eiken | 701 | 1993 | 13.4% | 33.4% |
| Auenstein | 681 | 1980 | 20.7% | 25.7% |
| Fahrwangen | 668 | 1991 | 19.2% | 37.3% |
| Oberwil-Lieli | 664 | 1988 | 8.1% | 35.2% |
| Bözberg | 663 | 1985 | 20.4% | 22.2% |
| Remetschwil | 637 | 1993 | 7.5% | 26.1% |
| Jonen | 634 | 1996 | 12.5% | 34.2% |
| Vordemwald | 633 | 1983 | 21.3% | 29.5% |
| Stein (AG) | 631 | 1988 | 12.0% | 32.3% |
| Mägenwil | 613 | 1993 | 10.6% | 38.2% |
| Dintikon | 552 | 1993 | 16.8% | 35.5% |
| Stetten (AG) | 540 | 1988 | 12.8% | 31.3% |
| Reitnau | 535 | 1988 | 24.3% | 29.3% |
| Teufenthal (AG) | 534 | 1976 | 28.8% | 24.7% |
| Wittnau | 534 | 1989 | 21.2% | 30.9% |
| Boniswil | 531 | 1988 | 19.6% | 26.6% |
| Auw | 525 | 2000 | 13.5% | 49.9% |
| Künten | 525 | 1988 | 12.4% | 26.7% |
| Veltheim (AG) | 524 | 1989 | 19.7% | 27.3% |
| Arni (AG) | 521 | 1992 | 6.9% | 28.0% |
| Biberstein | 519 | 1984 | 21.0% | 32.0% |
| Oberlunkhofen | 509 | 1995 | 5.7% | 36.7% |
| Koblenz | 506 | 1975 | 22.3% | 17.6% |
| Schneisingen | 504 | 1983 | 15.9% | 25.0% |
| Hirschthal | 501 | 1993 | 13.8% | 36.7% |
| Wohlenschwil | 500 | 1991 | 16.6% | 32.0% |
| Egliswil | 498 | 1993 | 23.3% | 30.5% |
| Killwangen | 489 | 1990 | 14.5% | 39.3% |
| Uerkheim | 485 | 1983 | 25.2% | 27.4% |
| Tägerig | 479 | 1988 | 19.0% | 32.4% |
| Fischbach-Göslikon | 472 | 1993 | 7.4% | 30.5% |
| Zetzwil | 472 | 1988 | 18.9% | 29.0% |
| Sisseln | 460 | 1990 | 8.9% | 33.3% |
| Dürrenäsch | 459 | 1985 | 23.7% | 33.8% |
| Wegenstetten | 454 | 1988 | 20.5% | 23.3% |
| Schmiedrued | 450 | 1983 | 25.1% | 22.7% |
| Bellikon | 445 | 1993 | 8.3% | 24.9% |
| Leibstadt | 443 | 1983 | 21.9% | 25.5% |
| Aristau | 442 | 1994 | 12.2% | 40.5% |
| Mumpf | 442 | 1993 | 21.5% | 31.9% |
| Riniken | 436 | 1975 | 12.4% | 20.2% |
| Zeihen | 435 | 1993 | 18.4% | 39.1% |
| Birrwil | 429 | 1974 | 37.3% | 23.8% |
| Tegerfelden | 427 | 1997 | 13.6% | 33.3% |
| Remigen | 426 | 1983 | 22.3% | 20.2% |
| Buttwil | 424 | 1988 | 5.7% | 24.1% |
| Gansingen | 419 | 1988 | 17.4% | 28.2% |
| Staffelbach | 415 | 1988 | 22.4% | 32.0% |
| Oeschgen | 412 | 1993 | 14.3% | 40.0% |
| Obermumpf | 408 | 1986 | 20.6% | 25.0% |
| Full-Reuenthal | 405 | 1988 | 24.0% | 28.9% |
| Oberrüti | 403 | 1995 | 11.7% | 34.5% |
| Hendschiken | 402 | 1988 | 17.7% | 34.1% |
| Densbüren | 395 | 1986 | 27.6% | 24.3% |
| Thalheim (AG) | 390 | 1988 | 26.7% | 30.8% |
| Hellikon | 388 | 1983 | 28.1% | 24.0% |
| Beinwil (Freiamt) | 373 | 1993 | 20.9% | 39.4% |
| Bünzen | 372 | 1989 | 19.6% | 32.8% |
| Unterlunkhofen | 372 | 1993 | 12.6% | 26.1% |
| Wölflinswil | 364 | 1988 | 18.4% | 31.3% |
| Zuzgen | 363 | 1988 | 23.4% | 30.3% |
| Schupfart | 355 | 1993 | 14.6% | 33.5% |
| Schlossrued | 343 | 1981 | 26.5% | 22.2% |
| Holziken | 337 | 1988 | 9.5% | 33.5% |
| Mühlau | 335 | 1991 | 16.1% | 30.4% |
| Holderbank (AG) | 326 | 1983 | 22.1% | 33.7% |
| Dietwil | 324 | 1993 | 15.1% | 38.0% |
| Kirchleerau | 321 | 1983 | 21.5% | 31.8% |
| Hallwil | 320 | 1992 | 21.6% | 34.7% |
| Münchwilen (AG) | 319 | 1985 | 15.4% | 31.0% |
| Rüfenach | 317 | 1988 | 13.9% | 33.4% |
| Birrhard | 310 | 1988 | 11.6% | 30.0% |
| Freienwil | 309 | 1988 | 15.9% | 33.7% |
| Moosleerau | 308 | 1985 | 27.3% | 26.9% |
| Bottenwil | 305 | 1983 | 24.6% | 24.3% |
| Büttikon | 297 | 1993 | 10.1% | 41.4% |
| Schwaderloch | 297 | 1988 | 22.9% | 30.0% |
| Leutwil | 294 | 1988 | 26.5% | 33.0% |
| Eggenwil | 287 | 1988 | 12.2% | 28.6% |
| Rottenschwil | 275 | 1990 | 9.1% | 30.5% |
| Ammerswil | 269 | 1993 | 20.4% | 26.4% |
| Oberhof | 253 | 1986 | 19.8% | 33.2% |
| Mülligen | 241 | 1988 | 21.2% | 27.4% |
| Abtwil | 240 | 1998 | 9.6% | 41.7% |
| Siglistorf | 217 | 1996 | 10.1% | 33.2% |
| Bettwil | 216 | 1989 | 17.1% | 32.4% |
| Besenbüren | 205 | 1995 | 18.0% | 34.1% |
| Leimbach (AG) | 205 | 1982 | 23.4% | 28.8% |
| Mönthal | 202 | 1983 | 19.8% | 18.3% |
| Brunegg | 201 | 1993 | 17.4% | 39.8% |
| Fisibach | 183 | 1988 | 19.1% | 35.5% |
| Uezwil | 179 | 1998 | 13.4% | 40.2% |
| Mandach | 169 | 1968 | 42.6% | 23.1% |
| Olsberg | 168 | 1993 | 12.5% | 34.5% |
| Islisberg | 162 | 1998 | 11.1% | 37.7% |
| Kallern | 151 | 1998 | 9.9% | 49.7% |
| Habsburg | 144 | 1994 | 12.5% | 37.5% |
| Mellikon | 122 | 1982 | 27.0% | 15.6% |
| Geltwil | 80 | 1998 | 17.5% | 48.8% |
| Wiliberg | 66 | 1998 | 9.1% | 39.4% |
| Böztal | 0 | - | - | - |
| Herznach-Ueken | 0 | - | - | - |
| Zurzach | 0 | - | - | - |
See it on the map
roots colors every parcel by construction year, from deep red for the oldest buildings to pale cream for the newest.
Open the roots map in the canton of AargauOther cantons
More data for Aargau
- Parcels and building zones Aargau in geopool