The legal framework

Two acts form the backbone of coastal and waterside construction law in Poland: the Water Law (Prawo wodne, Act of 20 July 2017) and the Construction Law (Prawo budowlane, Act of 7 July 1994, consolidated). Together they define the concept of the water body, establish protection zones, and set out the permit categories that apply to different types of construction.

The Water Law distinguishes surface water from groundwater and classifies surface water bodies into natural (lakes, rivers, coastal waters) and artificial (reservoirs, canals). Each category carries different obligations for developers. Coastal waters — defined as extending from the baseline to one nautical mile seaward — fall under a distinct regime that aligns with EU Marine Strategy Framework Directive requirements.

Mandatory protection strips

Article 176 of the Water Law establishes minimum buffer strips along watercourses and lake shores. These are not buildable areas regardless of what a local spatial plan might say:

Water body type Minimum strip width Applies to
Rivers with catchment > 50 km² 50 m from top of bank Permanent structures
Rivers with catchment ≤ 50 km² 15 m from top of bank Permanent structures
Lakes and reservoirs 100 m from shoreline Permanent structures
Baltic Sea coast 100 m from the dune crest or cliff edge All structures; coastal municipalities may extend to 200 m

These distances apply to new permanent construction. Temporary structures, piers, water intake infrastructure, and public access paths have separate provisions and may be permitted closer to the waterline with appropriate water-management permits.

Which permits are required

A project near water typically requires two or more permits in parallel, not in sequence. The most common combination involves a standard building permit from the starosta (county authority) or wojewoda (regional governor for larger projects), and a water-management permit (pozwolenie wodnoprawne) from the State Water Holding Polish Waters (Państwowe Gospodarstwo Wodne Wody Polskie, PGW WP).

Water-management permit (pozwolenie wodnoprawne)

This permit is required for any activity that affects water resources: construction on or near a floodplain, modification of riverbanks or lake shores, installation of water intakes or discharge points, and placement of structures within the protection strip. PGW WP regional offices (zarządy zlewni) issue these permits. Processing time varies by region but is typically 30–60 days for straightforward applications.

Applications must include hydrological and hydraulic documentation prepared by a certified specialist, drawings showing the structure in relation to the water body, and an environmental impact analysis if the project falls within a Natura 2000 area.

Building permit

The standard building permit process under the Construction Law applies. For projects within the coastal protection strip, the permit authority must confirm that the spatial plan or, where no plan exists, a land-use decision (decyzja o warunkach zabudowy) permits the use. Many coastal communes have adopted local spatial plans that explicitly prohibit all permanent construction within the dune protection zone.

Coastal construction: additional layers

The Baltic coast is subject to the Act on the Protection of Coastal Areas (Ustawa o ochronie brzegu morskiego) of 28 March 2003, administered by the Maritime Offices in Szczecin, Słupsk (for the mid-coast), and Gdynia. These offices maintain jurisdiction over the coast from the baseline inland to the edge of the maritime protection strip and issue separate permits for any engineering works on or adjacent to the beach or dune system.

Projects in this zone that affect the sediment budget — groins, revetments, beach nourishment — require a full coastal impact assessment and coordination with the maritime office's coastal engineering department.

Environmental requirements

Construction within 300 metres of a water body is screened for environmental impact under the Regulation on Types of Projects that May Significantly Affect the Environment (Regulation of the Council of Ministers of 10 September 2019). Projects above certain thresholds require either a full environmental impact assessment (OOŚ) or a simplified screening decision. The Regional Director for Environmental Protection (RDOŚ) handles these assessments for coastal and riverine projects.

Practical notes for applicants

  • Check the commune's local spatial plan (MPZP) first — many coastal zones prohibit construction entirely regardless of national setback rules.
  • Obtain a pre-application consultation from the relevant PGW WP regional office before commissioning full documentation; this avoids costly revisions.
  • The water-management permit and the building permit can be applied for simultaneously, but the building permit authority will condition its decision on the water permit being issued.
  • For projects near the Baltic coast, coordinate early with the relevant Maritime Office — their informal guidance is not publicly documented and can significantly affect the design.

Authoritative sources

Last reviewed: May 2026. Refer to current legal texts before relying on specific figures.