According to the provisions of art. 6851 of the Civil Code, the Lessor may increase rent by giving at least a one-month rent increase notice, at the end of a calendar month. The provisions apply to contracts concluded both for a defined and undefined period. The term used in the contract to describe the rent, i.e. fixed rent or rent as a percentage of sales, is of no major importance here – we can read in the e-book prepared by the lawyers of Causa Finita Commercial Real Estate Law Firm.
The lessor cannot increase the rent at his full discretion. The legal definition of rent is "an essential aspect of the Lease Contract” and, in the absence of the lessee's consent to the new rent, the contract of lease is terminated. The lessee will probably question the rent increase by referring to the lessor's abuse of his right to provide notice of a rent increase or by claiming that the increase is groundless.
However, it is generally possible to issue a rent increase notice. Neverth
Who will win and who will lose with changes to the land market
Who will win and who will lose with changes to the land market
The biggest change to the land market in years is on the horizon. The spatial planning reform will mean that plots previously considered attractive may lose value, while land with ...
Walter Herz
Sales up, supply down
Sales up, supply down
In the first quarter of 2026, the Polish housing market recorded a significant increase in sales. A total of 12,900 apartments were sold across the country's seven largest cities ( ...
JLL Polska
Rent isn't everything. The real costs of leasing warehouse space
Rent isn't everything. The real costs of leasing warehouse space
Choosing a new warehouse takes much more than simply comparing rental rates across a few or even a dozen centres. With rising energy costs and varying technical standards, the actu ...
Newmark Polska