Example
What does it look like in practice?
In the PUP it may be written "UPI IV-3263, quarter 12", and the cadastral sketch should indicate the PI with a digital identifier. If the boundaries do not match perfectly, the architect and surveyor should explain which part is regulated and how this affects the project.
A Roman-numeral planning designation alone is not enough to identify a specific self-contained unit.
What is it commonly confused with?
The RPI does not automatically mean that the property is ready for immediate development, that access and infrastructure are in place or that any desired development is permissible. The current plan, the purpose, the indicators, the limitations and the necessary follow-up acts are important.
"Regulated" is not the same as "no boundary or ownership dispute."
Why does it matter?
For the buyer, the difference between an EIA and a PI can affect access, parts of the land, the right to build and the exact scope of the permit. If the promised building steps on a different range than the verified one, the risk is not resolved with the same address or business name.
When buying a house or land, the planning regime directly affects the future use and development.
What to ask
What should you check next?
Read the PUP, the visa, the building permit and the cadastral sketch together. For different boundaries, ask a surveyor for a graphic comparison. Also check street access, zoning, development metrics and any easements or restrictions.
The next question is: "Do the current IMP and the verified IMP cover the same ground for the purposes of the particular project?"