The port of Pietarsaari has 10 warehouses: E1 and E2 (south), B1, B2 and B3 (Buskö), L1, L2 and L3 (Laukko), UPM –Kymmene warehouse and USM –warehouse. The total surface area of the Port of Pietarsaari is 39 000 m2.

Warehouse	Build	Structure	Cover	Surface area m2	Type of goods
E1	1958	Concrete	Concrete	2 560	Paper and plywood
E2	1967	Concrete	Concrete	3 675	Cellulosa
B1	1994	Metal	Metalsheeds	1 800	Timber
B2	1988-1991	Wood	Metalsheeds	4 320	Cellulosa, timber
B3	1976	Concrete	Concrete	7 714	Cellulosa
L1	1997	Concrete	Metalsheeds	7 407	Cellulosa, timber, paper, plywood
L2	2000	Metal	PVC-cover	3 960	Timber
L3	2001	Metal	PVC-cover	2 614	Timber
UPM	1994	Metal	Wood	2 640	Timber
USM	1971	Wood	Metalsheeds	2 214	Timber