The plot from the cadastre: what it reveals and what it doesn't

A house doesn't stand in mid-air — it stands on a plot. And in the Czech Republic that's beautifully mapped: the cadastre of real estate (ČÚZK) makes parcel boundaries, their numbers and areas publicly available. Pásek can tap into them.

How it works

You find a parcel two ways: let the app use GPS (you're on site and want "this one, under my feet"), or enter the parcel number and cadastral area. Pásek then pulls the plot outline from the public ČÚZK service and draws it into the site plan beneath your buildings. It pre-fills the area for you — you can overwrite it, and a manual value always wins.

Neighbouring parcels are offered as one-tap suggestions. "Neighbour" here means spatial proximity — the parcel right next door — not land owned by the same person.

Where public data ends

Now the fair part. From the cadastre's open data you can reliably read the parcel number, area, cadastral area and outline. What isn't in it:

• The owner. The owner's name is available only through authorised remote access, not in open data. So Pásek can't link parcels of the same owner — and doesn't pretend to.
• Land type. Whether a parcel is a garden or built-up land can't be told reliably from the public layer. That's why we don't fill in built-up area or building count from the cadastre.

A backdrop, not a survey

This is fundamental and we're happy to repeat it: the cadastral map is an orientation backdrop. It shows roughly where the boundary runs — not exactly where to drive a peg.

Only an officially authorised surveyor may mark out a plot's boundaries. Pásek helps you get your bearings; it doesn't replace the boundary on the ground.

Next time: where all that scanned and measured data actually gets stored. The answer is surprisingly old-fashioned — with you.