List of Installation Companies in Austria

Last updated 6 November 2026

There are 17,586 installation companies in Austria, one in every 49 Austrian companies. Most of them are small: three in five work as sole traders, and only 261 firms employ 50 people or more. One in four installation firms is based in Wien, Graz, Linz, Salzburg and Klagenfurt am Wörthersee. Below you find the largest installation firms in Austria, the cities where they cluster, how many started this year and which are the oldest. The full list with addresses, phone numbers and email is in our Austrian company database or through the Company Data API.

17,586 companies indexed · Data counted on 6 November 2026

Companies17,5861 in49 Austrian companiesCities1,907Largest cityWien 2,973Sole traders60%Employees1-4 (66%)Revenue$100-500K (73%)Email53%Phone47%Website54%

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A live view of all 17,586 installation firms, sorted by revenue. Narrow it by region, city, employee size, revenue, legal form or founding year, or search a firm by name.

Tokyo Electron Europe LIMITEDTokyo Electron Europe LIMITED

	Company Name	Country	City	Address 1	State/Province	Postal Code	Website	Founding Year	Yearly Revenue in U.S. Dollars	Employees Total	Business Legal Type - Description	Number of Companies in Group	Company Registration Number
1	Tokyo Electron Europe LIMITED	Austria	Villach	Europastraße 8	Kärnten	9500	N/A	1994	$925,424,898	30	Foreign company	137	FN428951k
2	Stäubli Tec-Systems GMBH	Austria	Sankt Florian	Frischeisstraße 8	Oberösterreich	4490	*****.com	1986	$328,744,584	1,086	Foreign company	80	FN491361s
3	Knapp Systemintegration GMBH	Austria	Leoben	Waltenbachstraße 9	Steiermark	8700	*****.com	1995	$323,474,081	808	Corporation	61	FN138870x
4	Caverion Osterreich GMBH	Austria	Wien	Laxenburger Straße 254	Wien	1230	*****.at	1956	$307,896,239	1,097	Corporation	561	FN309157v
5	Energie AG Oberösterreich Tech Services GMBH	Austria	Linz	Böhmerwaldstraße 3	Oberösterreich	4021	*****.at	2006	$234,810,687	313	Corporation	733	FN282573z
6	Bachner Elektro GMBH & CO. KG	Austria	Steyr	Bmw-allee 2	Oberösterreich	4400	*****.de	2004	$229,900,252	30	Foreign company	29	FN242117f
7	Markus Stolz, Gesellschaft M.B.H. & CO. KG., Installationen	Austria	Bludenz	Zurcherstraße 44	Vorarlberg	6700	*****.at	1972	$188,976,937	602	Partnership of unknown type	14	FN14104t
8	Ortner Ges.m.b.h.	Austria	Innsbruck	Dr.-stumpf-straße 2	Tirol	6020	*****.at	1902	$174,757,319	521	Corporation	36	FN137983t
9	Klenk & Meder Gesellschaft M.B.H.	Austria	Sankt Pölten	Klenkstraße 1	Niederösterreich	3100	*****.at	1975	$165,099,597	765	Corporation	20	FN82965h
10	G. Klampfer Elektroanlagen GMBH	Austria	Leonding	Paschingerstraße 104	Oberösterreich	4060	*****.at	1985	$162,599,774	297	Corporation	7	FN268170v
11	Bilfinger Real Estate Austria GMBH	Austria	Wels	Dieselstraße 2	Oberösterreich	4600	*****.at	1999	$147,049,721	653	Corporation	368	FN234606i
12	Kristl, Seibt & CO. Gesellschaft M.B.H.	Austria	Graz	Baiernstraße 122a	Steiermark	8052	*****.at	1979	$141,841,245	516	Corporation	11	FN55563k
13	Equans Gebäudetechnik GMBH	Austria	Wien	Leberstraße 120	Wien	1110	*****.at	1959	$129,022,233	505	Corporation	4135	FN100305h
14	Eta Heiztechnik GMBH	Austria	Hofkirchen An der Trattnach	Gewerbepark 1	Oberösterreich	4716	*****.at	1998	$122,275,391	353	Corporation	2	FN178711k
15	Eww Anlagentechnik GMBH	Austria	Wels	Knorrstraße 6	Oberösterreich	4600	*****.at	1998	$122,051,298	354	Corporation	40	FN173488f
16	Spl Tele GMBH & CO KG	Austria	Wolkersdorf Im Weinviertel	Johann-galler-straße 39	Niederösterreich	2120	*****.com	2010	$114,676,483	276	Partnership of unknown type	33	FN399105w
17	Bacon Gebäudetechnik GMBH	Austria	Wien	Scherbangasse 20	Wien	1230	*****.at	1987	$113,225,183	345	Corporation	36	FN50672v
18	Meridionale Impianti S.P.A	Austria	Finkenstein am Faaker See	Kärntner Straße 50b	Kärnten	9586	N/A	1981	$112,027,239	70	Foreign company	10	FN562393z
19	Licht Loidl Gesellschaft M.B.H.	Austria	Lafnitz	Lafnitz 186	Steiermark	8233	*****.at	1966	$110,254,465	547	Corporation	5	FN65195a
20	Ebg GMBH	Austria	Linz	Emil-rathenau-straße 4	Oberösterreich	4030	*****.at	1977	$106,130,191	459	Corporation	36	FN224214b
21	J. Christof Gesellschaft M.B.H.	Austria	Graz	Glacisstraße 37	Steiermark	8010	*****.com	1989	$98,578,712	380	Corporation	12	FN47620f
22	Lsg Building Solutions GMBH	Austria	Wien	Gorskistraße 13	Wien	1230	*****.eu	1997	$95,491,371	113	Corporation	11	FN157112y
23	Bt-Systems GMBH	Austria	Ludersdorf	Ludersdorf 175	Steiermark	8200	*****.at	1988	$91,817,978	264	Corporation	19	FN39399s
24	Etech Schmid U. Pachler Elektrotechnik GMBH & CO KG	Austria	Linz	Hafenstr. 2a	Oberösterreich	4020	*****.at	1991	$87,941,829	369	Partnership of unknown type	42	FN214211t
25	Sar Anlagenbau GMBH	Austria	Amstetten	Bahnhofstraße 34	Niederösterreich	3363	*****.at	2009	$74,703,874	217	Corporation	8	FN330076g

Showing 25 of 17,586 companies

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Largest installation firms in Austria

The biggest firms by staff and by revenue, the largest in Wien, the biggest newcomers of 2026 and the oldest firms. Click a name for the record.

Caverion Osterreich is the largest installation firm in Austria by headcount. 261 firms employ 50 people or more; 98 employ 100 or more.

1Wien1,097 staff
2Sankt Pölten765 staff
3Wels653 staff
4Bludenz602 staff
5Lafnitz547 staff
6Innsbruck521 staff
7Graz516 staff
8Wien505 staff
9Graz380 staff
10Linz369 staff

By employee size · 17,362 firms with a known headcount

Employees	Firms	%
1-4	11,449	66%
5-9	3,507	20%
10-19	1,346	8%
20-49	799	5%
50-99	163	0.9%
100-199	63	0.4%
200-499	25	0.1%
500-999	8	<0.1%
1,000+	2	<0.1%

66% have 1 to 4 people; 799 have 20 to 49; 261 have 50 or more.

By yearly revenue (USD)

Revenue	Firms	%
< $100K	187	1%
$100K-$500K	12,581	73%
$500K-$1M	2,249	13%
$1M-$5M	1,727	10%
$5M-$10M	204	1%
$10M-$50M	142	0.8%
$50M-$100M	20	0.1%
$100M-$500M	19	0.1%
$500M+	1	<0.1%

73% between $100,000 and $500,000; 1,727 between $1M and $5M; 386 above $5M.

Installation firms in Wien

Wien has 2,973 installation companies and installation firms, 1.4% of all 208,576 Wien companies and 30% below the national share. Two in three Wien firms have fewer than five people; 41 have 50 or more. 44 new firms were entered in 2026, 344 date from before 1990.

Size

1-4 staff: 1,984 · 68%
5-9: 576 · 20%
10-19: 214 · 7%
20-49: 124 · 4%
50+: 41 · 1%

Legal form

Sole traders: 1,548 · 52%
Partnerships: 289 · 10%
GmbH and AG: 997 · 34%
Other or none: 139 · 5%

Of the Austrian total: 16.9%
Of all Wien companies: 1.4%
Against the national share: 0.7×

New

Entered 2026 so far: 44
Entered 2025: 76
Of Austria's 2026 entries: 24.9%

Old

Before 1990: 344 · 12%
1990 or later: 2,629 · 88%
Of Austria's pre-1990 firms: 18.3%

Reachable

Email: 1,342 · 45%
Phone: 1,191 · 40%
Website: 1,448 · 49%

Revenue (USD)

Under $100K: 20 · 0.7%
$100K-$500K: 2,217 · 77%
$500K-$1M: 343 · 12%
$1M and more: 318 · 11%

Largest

11,097
2505
3345
4325
5316

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Firm sizes in Austria

Of the 17,362 Austrian installation firms with a known headcount, 11,449 (66%) have one to four people, 3,507 have five to nine, 2,145 have ten to 49 and 261 have 50 or more. Most firms turn over between $100,000 and $500,000 a year (12,581, 73%).

EU size bands · the grey line shows all Austrian companies

Micro under 1014,956 86%
Small 10 to 492,145 12%
Medium 50 to 249251 1%
Large 250+10 <0.1%

Grey line: the share among all Austrian companies (93% have under ten staff).

386

firms turn over more than $5 million a year; 182 more than $10 million.

177

firms were entered in 2026.

Where in Austria?

Wien has the most installation companies in Austria (2,973), ahead of Graz (472), Linz (228), Salzburg (226) and Klagenfurt am Wörthersee (222). Together the five hold one in four of them. Relative to their size, Sankt Pölten, Klagenfurt am Wörthersee and Villach have the most: 0.8 to 0.9 times the national share.

Cities by number of firms

1,907 Austrian cities have at least one installation firm; 403 have ten or more; 259 have exactly one. Click a city to set the lens.

Only here

Where they cluster

Installation firms per 100 companies, in cities with at least 100 of them. The national share is 2.03. Sankt Pölten has 0.9 times the national share.

0.9×
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Dashed line: the national share. A filled dot is twice the national share or more.

By state 9 states

State	Firms	%
Niederösterreich	3,686	21%
Wien	2,973	17%
Oberösterreich	2,820	16%
Steiermark	2,591	15%
Tirol	1,533	9%
Salzburg	1,264	7%
Kärnten	1,212	7%
Vorarlberg	769	4%
Burgenland	729	4%

How many installation companies are there in Austria?

Installation companies and installation firms in Austria

17,586

6 November 2026

There are 17,586 installation companies and installation firms in Austria in our data (6 November 2026). That is one in every 49 Austrian companies. About one new firm is entered in the register every working day this year (177 so far in 2026).

Structure

Single-site firms: 16,147 92%
Head offices: 985
Branch offices: 454

Classification

NACE Rev. 2 codes 4321, 4322 and 4329. Our platform filter is NACE Rev. 2 4321, 4322, 4329.

5,394 of the 17,586 are GmbH and AG (31%); 10,464 are sole traders. They come from Firmenbuch and our Austrian register data, through the Company Data API.

The oldest firms in Austria

Our data holds 24 Austrian installation firms from before 1900, 210 from before 1950 and 1,882 from before 1990.

1817
1. Grein
1820
1. Spittal an der Drau
1850
1. Wien
1855
1. Wien
1860
1. Salzburg
1864
1. Röthis

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1990

1,882

Austrian installation firms date from before 1990

136

were entered in 1990

Newcomers in Austria in 2026

177 installation firms were entered in the Austrian register so far in 2026, about one per working day, after 380 in 2025. Austria as a whole saw 14,367 new companies in 2026, so this industry takes 1.2% of the inflow.

8462022
8632023
7092024
3802025
1772026 so far

90 of this year's 177 are GmbH and AG.

The biggest newcomers of 2026

The year is the register entry; an established firm that changes legal form appears as new.

1Linz5 staff
2Kirchberg in Tirol5 staff
3Obertrum am See5 staff
4Breitenfurt Ost5 staff
5Allhartsberg5 staff

How reachable are they?

Installation firms are easier to reach than the average Austrian company: 47% list a phone number and 54% a website.

Email9,238 53%
Phone8,241 47%
Website9,431 54%

Grey line: all Austrian companies (email 33%, phone 36%, website 39%).

The full list with these fields is in our Austrian company database.

Sole traders or GmbH: how they are organised

Three in five Austrian installation firms work as sole traders, against 55% of all Austrian companies. Three in ten are GmbH and AG.

Sole traders (Einzelunternehmen)10,46460%
Partnerships (OG and KG)9535%
GmbH and AG5,39431%
No form on record or other7754%

Single-site: 92%
Head offices: 985
Branches: 454

All Austrian companies: 55% sole traders, 8% partnerships, 26% GmbH and AG.

How they compare

Next to related industries

There are 50 installation firms for every one of the air conditioning companies in Austria.

Industry	Firms	Website	1-4 staff
Installation Companies	17,586	54%	65%
Electricians	9,461	49%	67%
Hvac Companies	7,081	61%	61%
Plumbers	2,098	72%	58%
Masons	879	61%	66%
Air Conditioning Companies	351	91%	48%

In other countries

Country	Firms	Per 1,000 cos.
India	121,578	3.1
Slovakia	25,171	21.0
Vietnam	23,057	12.4
New Zealand	17,835	17.5
Austria	17,586	20.3

More countries →

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Frequently asked questions

How many installation companies are there in Austria?

There are 17,586 installation companies and installation firms in Austria in our data, counted on 6 November 2026. That is one in every 49 Austrian companies.

Which is the largest installation firm in Austria?

Caverion Osterreich in Wien, with 1,097 staff.

Which Austrian city has the most installation companies?

Wien, with 2,973, ahead of Graz (472), Linz (228), Salzburg (226) and Klagenfurt am Wörthersee (222). Relative to its size, Sankt Pölten has the most: 0.9 times the national share.

How many installation firms are there in Wien?

2,973, which is 1.4% of all 208,576 Wien companies and 30% below the national share.

How big is a typical installation firm?

Small. 66% of the 17,362 firms with a known headcount have one to four people; 261 have 50 or more. Most turn over between $100,000 and $500,000 a year.

Are Austrian installation companies sole traders or companies?

Three in five (10,464) are sole traders, 5% are partnerships and 31% (5,394) are GmbH and AG.

How many installation firms started in 2026?

177 were entered in the Austrian register so far in 2026, after 380 in 2025. 90 of them are GmbH and AG.

What is the oldest installation firm in Austria?

Meisl in Grein, 1817, followed by Alois Riebler & Söhne OHG in Spittal an der Drau (1820) and Alfons Reichstädter in Wien (1850). 24 firms date from before 1900.

Which industry code covers installation companies?

Austrian installation companies are classified under NACE Rev. 2 codes 4321, 4322 and 4329. Our platform filters them on NACE Rev. 2 4321, 4322 and 4329.

Can I download the full list?

Yes. All 17,586 firms with address, phone, email, legal form, employees, revenue and founding year, as Excel, CSV or through the API.

Discover more: related industries, in other countries

The lists closest to this one. Every industry and city in Austria is on the Austria page.

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