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Before you buy8 min readUpdated: 26 August 2026

Is the parcel buildable? Four registers that all have to agree

In listings, “buildable” means everything and nothing. In law, there is no single register of buildable parcels — there are four sources, each answering a different question. A parcel that looks buildable in one can be frozen for years in another.

The four sources of truth

SourceWhat question it answersBinding for construction?
EGiB (land registry)what this land IS today: use class (B, R, Ls…) and soil gradeno — a registry of facts, not rights; feeds tax and statistics
MPZP (local plan)what may be BUILT here: designation and ratiosyes — local law, directly binds the building permit
General plan (POG)what will be POSSIBLE here: planning zone and standardsindirectly — binds future MPZPs and WZ decisions
WZ decisionwhat may be built WHEN there is no planyes — an individual decision for a specific investment

The traps that catch buyers

The pre-purchase checklist

  1. 1Check the use classes and soil grades in the land registry — they set the conversion path and cost.
  2. 2Establish whether the parcel is covered by an MPZP. If yes: read the designation AND the ratios (height, coverage, building line) — a designation without ratios is half an answer.
  3. 3If there is no plan: check the general-plan zone and whether the parcel sits inside the infill area — the precondition for any future WZ.
  4. 4Verify legal access to a public road (direct, via an internal road with a share, or an easement entered in the land register).
  5. 5Check constraints outside the plan: nature and heritage protection, flood hazard areas, cemetery and power-line buffers.
  6. 6Only then compare price — against recorded transactions for similar land nearby, not asking prices.
One click instead of four registers

Centria's parcel report runs exactly this checklist automatically: registry use classes and grades, plan designation and parameters, the POG zone, environmental risks and road access — marking which data is official and which is missing.

Frequently asked questions

The listing says “buildable, with a WZ decision”. Enough?

Read the decision itself: issued to whom, for what investment, and when. Old decisions are open-ended but describe a specific project — yours may not fit inside it. New ones expire after 5 years.

Is a “siedlisko” a buildable parcel?

Farmstead development is a separate regime — it requires running a farm. For someone without farmer status, such a parcel is usually not a route to a family house.

What does converting farmland to buildable cost?

Two separate processes: the designation change (in the plan) and the exclusion from agricultural production (a starosta decision with grade-dependent fees). Details and rates — in our farmland-conversion guide.

Check the parcel before you sign

The report runs the whole checklist for you — from registry use classes to the general-plan zone — and shows the result with references to sources.