Landowner Noel O'Gara has given an undertaking to the High Court not to park more than two cars on his land at Dartmouth Square in Dublin for the next week.
He has also agreed to have discussions with Dublin City Council about possible uses for the land.
The court adjourned the proceedings taken by the city council against Mr O'Gara for a week to allow discussions to take place.
The council wants to stop Mr O'Gara from using the land as a public car park.
Mr O'Gara told the court he believed the planning and development laws were repugnant to the Constitution.
Afterwards, he said Irishmen had fought for their land for centuries only to have control of the land passed to bureaucrats in the city council.
The landowner said he wants to build a gym, creche and underground car park on the land.
The land is currently under a compulsory purchase order and An Bord Pleanála is due to make a decision on the validity of that order soon.
