42911Construction of water projects

40 companies

This activity has special requirements (e.g. a licence or notice).

Largest companies by revenue

1.Insenerehituse AS
10918041, Kesklinna linnaosa
Revenue 2025
€26.8M
−21%
Net profit
€1.3M
−43%
Employees
25
2.Rakennus Grupp OÜ
11123527, Pirita linnaosa
Revenue 2025
€4.6M
+13%
Net profit
€457.8K
−4.9%
Employees
2
3.GT Corporation SE
10113886, Kesklinna linnaosa
Revenue 2025
€2.9M
+38%
Net profit
€370.2K
+335%
Employees
18
4.Top Marine Infra OÜ
14645953, Saue linn
Revenue 2025
€1.6M
−39%
Net profit
€5.1K
−86%
Employees
6
5.GT EST OÜ
11591277, Kesklinna linnaosa
Revenue 2025
€1.4M
+24%
Net profit
€114K
+158%
Employees
19
6.Kolm Polti OÜ
12929178, Haabneeme alevik
Revenue 2025
€839.5K
+51%
Net profit
€327.2K
+137%
Employees
3
7.Osaühing Akvamarin
10928170, Narva linn
Revenue 2025
€334.2K
−33%
Net profit
−€18.8K
−197%
Employees
4
8.UWS Baltic OÜ
10808134, Kesklinna linnaosa
Revenue 2025
€249.5K
+39%
Net profit
€13.4K
+973%
Employees
4
9.MEFS OÜ
16107007, Kõiguste küla
Revenue 2025
€224.3K
+2,711%
Net profit
€52.9K
+584%
Employees
1
10.Altum OÜ
11544217, Põhja-Tallinna linnaosa
Revenue 2025
€203.8K
−41%
Net profit
−€53.8K
−435%
Employees
6

#	Company	Reg.	Revenue	Change	Net profit	Change	Employees
1	Insenerehituse AS 10918041, Kesklinna linnaosa	2002	€26,828,726 2025	−21%	€1,318,865	−43%	25 annual average (FTE)
2	Rakennus Grupp OÜ 11123527, Pirita linnaosa	2005	€4,600,641 2025	+13%	€457,800	−4.9%	2 annual average (FTE)
3	GT Corporation SE 10113886, Kesklinna linnaosa	1997	€2,889,197 2025	+38%	€370,211	+335%	18 annual average (FTE)
4	Top Marine Infra OÜ 14645953, Saue linn	2019	€1,594,822 2025	−39%	€5,147	−86%	6 annual average (FTE)
5	GT EST OÜ 11591277, Kesklinna linnaosa	2009	€1,439,000 2025	+24%	€113,993	+158%	19 annual average (FTE)
6	Kolm Polti OÜ 12929178, Haabneeme alevik	2015	€839,542 2025	+51%	€327,190	+137%	3 annual average (FTE)
7	Osaühing Akvamarin 10928170, Narva linn	2003	€334,248 2025	−33%	−€18,786	−197%	4 annual average (FTE)
8	UWS Baltic OÜ 10808134, Kesklinna linnaosa	2001	€249,541 2025	+39%	€13,396	+973%	4 annual average (FTE)
9	MEFS OÜ 16107007, Kõiguste küla	2020	€224,326 2025	+2,711%	€52,872	+584%	1 annual average (FTE)
10	Altum OÜ 11544217, Põhja-Tallinna linnaosa	2008	€203,819 2025	−41%	−€53,841	−435%	6 annual average (FTE)

Includes

This class includes: - dredging of waterways (e.g. harbour basins, rivers) Construction and reconstruction of, e.g.: - waterways, harbour basins, rivers, marinas - hydromechanical structures (e.g. locks, lifts, sluices, slipways) - dams and dykes

Also includes

construction of hydrotechnical facilities general construction, including repair of boat harbours, sluices, berths, piers, docks and other shore and port installations general construction, including repair of dams and other retaining walls general construction, including repair of sluices, sluice gates, chambers and channels, slipways and other hydromechanical installations removal of stones and mud and other water construction work underwater works by scuba divers, divers and others

Excludes

construction of underwater pipelines, see 42211 laying of underwater cables, see 42221 project management activities related to civil engineering works, see 71121