You have one property. Let it look like one.

If you have instructed more than one agent, you have probably seen it already: the same flat, several listings, different prices, different floor areas, different photographs. To a buyer that does not look like choice. It looks like something is wrong with the property. One number solves it.

Updated: August 2026

The cadastral identifier is the official number of your specific unit on the cadastral map. Five groups of digits, separated by full stops. The last group is what distinguishes your flat from every other one in the same building.

When FinHome has it, every source offering the property attaches to one record. One price. One history. One place where you can see what is happening.

The cost of duplication

What you lose when the property doubles

Duplicated listings bring the price down faster than any negotiation. The buyer sees one property in four versions, takes the lowest to be the real one, and starts negotiating from there. The discount has been given before you have even spoken.

The second loss is quieter. When the data disagrees — 82 or 86 square metres, fourth floor or fifth — the buyer stops trusting the description. And distrust of the data carries over into distrust of the price.

A canonical property. That is what we call the single record: one unit, to which every source offering it attaches. The buyer sees one property with one set of figures. You stay the owner of your price, instead of discovering it in five versions.

Where to find it

You almost certainly have it already

You do not need to go anywhere or pay anything. The number is recorded in documents you will be obtaining for the sale in any case.

Title deed

In deeds issued after the cadastral map for your area came into force, the identifier is written into the description of the property — usually in the first lines, before the area and the boundaries.

Certificate of tax valuation

A compulsory document for a notarial transfer. The identifier appears here too, in the description of the taxable unit.

Plan of the individual unit

Issued by the Geodesy, Cartography and Cadastre Agency. The number sits in the header, above the drawing.

Can't find it?

Tell us the address, entrance, floor and flat number. We will find it and show you what we found so you can confirm it. We are not going to make you copy out fifteen digits.

We don't need a copy of the whole title deed. It contains personal data — yours and other people's — that we have no basis for collecting at this stage. The number itself is enough. If you prefer, photograph only the line it appears on.

How to read it

What it looks like, and where people go wrong

The identifier takes the form settlement code · district · land plot · building · individual unit — for example 68134.XXXX.XXX.1.14. The first group is the code of the settlement, and the last is your specific flat.

The most common mistake: the building's number instead of the flat's. An identifier with four groups describes the whole building. It looks entirely correct, but it does not point to your property. If you enter one, we will tell you and help you find the right one — you will not get a technical error message.

The second benefit, which few people think of

It happens that a unit is recorded in the cadastre but the description in the title document does not match — a different floor area, a different floor, an alteration that was never recorded. This is not rare, and in most cases it is settled calmly.

The problem is when it comes to light. In front of the notary, on the day of the sale, it stops the signing and sometimes derails the buyer's financing. Found at the beginning, there are months to sort it out without pressure and without losing the buyer.

That is why we ask for the number at the start rather than at the end. Not to complicate the submission, but to avoid complicating the sale.

New construction

If you are selling off-plan, individual identifiers for the flats do not exist yet, and that is entirely normal. Until the building is put into service, we work with the identifier of the land plot, the building permit number and the unit's design number. The identifier is added when the building receives its permit for use — at that point it necessarily exists.

What the identifier does not do

It describes the unit, not the rights over it. It does not prove ownership and does not replace the title document, the plan or the certificate of encumbrances. Nor is it public information: it is not shown to buyers, not shown to other agents, and does not appear in any listing. It is used inside the system — so that it is clear which property is which.

One number. One property. One price, set by you.

Have it ready before you submit the property. It takes a minute if your documents are to hand — and saves weeks if they are not.

To the seller entry point

This material is educational and describes established practice in residential transactions in Bulgaria as of August 2026. It does not replace advice from a lawyer, a notary or a licensed cadastre professional for your specific case. FinHome is not a party to the transaction and does not provide legal advice.

Continue from here

Seller's checklist Eight phases — from documents to notary. Pricing guide A competitive price from real transactions, not asking prices. Photography tips Professional shots with nothing but a phone.