42Civil engineering

2,096 companies

Sub-industries

Largest companies by revenue

1.AS Connecto Infra
10722319, Kristiine linnaosa
Revenue 2025
€119.4M
−9.3%
Net profit
€18.3M
+17%
Employees
153
2.LEONHARD WEISS OÜ
12083348, Lasnamäe linnaosa
Revenue 2025
€118.6M
−8.9%
Net profit
€6.1M
−1.5%
Employees
450
3.GRK Eesti AS
12579850, Tartu linn
Revenue 2025
€93.9M
+30%
Net profit
€6.1M
+158%
Employees
109
4.Arrow ECS Baltic OÜ
12141384, Kristiine linnaosa
Revenue 2025
€79.6M
+37%
Net profit
€3.2M
+16%
Employees
59
5.AS TREV-2 Grupp
10047362, Mustamäe linnaosa
Revenue 2025
€79.1M
+40%
Net profit
€3.3M
−13%
Employees
252
6.Enersense Aktsiaselts
11445550, Lasnamäe linnaosa
Revenue 2025
€47.5M
−19%
Net profit
€2.1M
−52%
Employees
306
7.WiSo Engineering OÜ
16613472, Kristiine linnaosa
Revenue 2025
€42M
+2.6%
Net profit
€5.9M
−6%
Employees
19
8.Aktsiaselts TREF Nord
10217746, Rae vald
Revenue 2025
€40.1M
−23%
Net profit
−€813.2K
−149%
Employees
125
9.AS INF Ehitus
11097051, Soodevahe küla
Revenue 2025
€39.7M
−11%
Net profit
€373.3K
−55%
Employees
125
10.AS Tariston
10887843, Põhja-Tallinna linnaosa
Revenue 2025
€32M
−14%
Net profit
€132.1K
+231%
Employees
149

#	Company	Reg.	Revenue	Change	Net profit	Change	Employees
1	AS Connecto Infra 10722319, Kristiine linnaosa	2001	€119,376,000 2025	−9.3%	€18,255,000	+17%	153 annual average (FTE)
2	LEONHARD WEISS OÜ 12083348, Lasnamäe linnaosa	2011	€118,604,340 2025	−8.9%	€6,124,159	−1.5%	450 annual average (FTE)
3	GRK Eesti AS 12579850, Tartu linn	2013	€93,933,377 2025	+30%	€6,062,224	+158%	109 annual average (FTE)
4	Arrow ECS Baltic OÜ 12141384, Kristiine linnaosa	2011	€79,645,048 2025	+37%	€3,152,089	+16%	59 annual average (FTE)
5	AS TREV-2 Grupp 10047362, Mustamäe linnaosa	1996	€79,076,000 2025	+40%	€3,304,000	−13%	252 annual average (FTE)
6	Enersense Aktsiaselts 11445550, Lasnamäe linnaosa	2007	€47,538,832 2025	−19%	€2,126,215	−52%	306 annual average (FTE)
7	WiSo Engineering OÜ 16613472, Kristiine linnaosa	2022	€41,988,891 2025	+2.6%	€5,893,739	−6%	19 annual average (FTE)
8	Aktsiaselts TREF Nord 10217746, Rae vald	1997	€40,105,766 2025	−23%	−€813,192	−149%	125 annual average (FTE)
9	AS INF Ehitus 11097051, Soodevahe küla	2005	€39,744,821 2025	−11%	€373,338	−55%	125 annual average (FTE)
10	AS Tariston 10887843, Põhja-Tallinna linnaosa	2002	€32,032,233 2025	−14%	€132,072	+231%	149 annual average (FTE)

Includes

This division includes general construction for civil engineering objects. It includes new work, repair, additions and alterations, the erection of prefabricated objects on site and also those of a temporary nature. Further included is the construction of heavy constructions (for example, motorways, roads, power plants, bridges, tunnels, railways, airfields, harbours and other water projects, irrigation systems, sewerage systems, industrial facilities, pipelines and electric lines, outdoor sports facilities). This work can be carried out on own account or on a fee or contract basis. Portions of the work and sometimes even the whole practical work can be subcontracted out.