Cadastral Reference Spain: How the Catastro Tracks Property

The 20 characters, decoded

A reference for an urban property looks like this: 9872023VH5797S0001WX. It splits into four blocks.

Block	Characters	What it identifies
9872023	7	The parcel
VH5797S	7	The cartographic sheet the parcel sits on
0001	4	The unit inside the building
WX	2	Control characters

The last two characters are a checksum, so a mistyped digit gets rejected by the Sede Electrónica del Catastro rather than quietly returning the wrong flat. The third block explains why every apartment in a block of 60 shares the same first 14 characters. A garage space and a storeroom carry their own references and generate their own tax bills.

Rustic property uses a different layout: province, municipality, sector, polígono, parcela, any building standing on the land, then the control characters. Buy a plot near Hondón de las Nieves or Fuente Álamo and that is the format on your paperwork.

Navarra and the three Basque provinces run their own foral cadastres. Everywhere on the Costa Blanca, the Costa Cálida and in the Valencia region, the state cadastre applies.

Where to find it in five minutes

The IBI receipt carries it at the top. Most ayuntamientos in Alicante province delegate IBI collection to SUMA Gestión Tributaria; in Murcia and in Valencia city the ayuntamiento usually bills you directly.

The escritura must state it. Article 38 of the Texto Refundido de la Ley del Catastro Inmobiliario, Real Decreto Legislativo 1/2004, requires the reference to appear in the deed, and the notary warns the parties when the description in the deed does not match the one held by the Catastro. Read that warning if there is one. Our guide on what a Spanish notary does and does not check explains where the duty stops.

The Sede Electrónica del Catastro gives the reference away free. Search by address, click the map or enter a partial code, with no NIE, no digital certificate and no account. You get the reference, the built surface, the year of construction, the use and a scale map of the plot. Owner names and the valor catastral stay hidden unless you own the property or can prove a legitimate interest.

Catastro or Registro: which record decides what

The Catastro belongs to the Ministerio de Hacienda and holds the map: where the plot is, how many square metres are built on it, what the building is used for and what it is worth for tax purposes.

The Registro de la Propiedad sits on the justice side of the state, run by registrars whose national body publishes at registradores.org. It records who owns what and what charges sit on the property: mortgages, embargoes, easements, rights of way. Registered ownership enjoys the protection of article 34 of the Ley Hipotecaria, which is what makes your title safe.

For ownership and debt, the Registro decides. For surface, boundaries and physical description, the Catastro carries more weight, and since Ley 13/2015 the two systems exchange georeferenced graphics. Once a plot has been reconciled the nota simple states that the finca is coordinada con el Catastro, meaning the boundaries in the two records match. Our comparison of the escritura and the nota simple covers what else to read on that document.

What the valor catastral costs you every year

The Catastro calculates the valor catastral from the municipal ponencia de valores as land value plus construction value, adjusted for age, condition and location. By law it may not exceed market value, and the market-reference coefficient applied under the technical valuation rules of Real Decreto 1020/1993 holds it near half of market in most municipalities. On the coast, a EUR 250,000 apartment often carries a valor catastral between EUR 70,000 and EUR 110,000, depending on when the town last revised its ponencia. Torrevieja, Los Alcázares and Benidorm sit on different revision cycles, so two similar flats in neighbouring towns produce very different bills.

Tax	Base it uses	Who sets the rate	Typical rate
IBI	Valor catastral	Ayuntamiento	0.4% to 1.1% urban, 0.3% to 0.9% rustic
Plusvalía municipal (IIVTNU)	Valor catastral of the land, or the real gain	Ayuntamiento	Up to 30% of the calculated base
Modelo 210 imputed income	1.1% of valor catastral if revised in the last ten tax periods, otherwise 2%	State	19% for EU/EEA residents, 24% for everyone else
ITP on resale	Higher of the price paid and the valor de referencia	Comunidad autónoma	7% to 10% on our coast
IVA plus AJD on new build	Price paid	State and comunidad autónoma	10% plus 1.2% to 2%

Take a two-bedroom apartment in Torrevieja bought for EUR 250,000 with a valor catastral of EUR 90,000. IBI at a municipal rate of 0.7% comes to EUR 630 a year. The imputed-income base for a non-resident owner is 1.1% of EUR 90,000, so EUR 990, taxed at 19% for a Dutch or German owner, which is EUR 188, and at 24% for a British owner after Brexit, which is EUR 238. Community fees, rubbish collection and insurance sit on top, and we set those out in our guide to annual property taxes for non-residents. The return itself is covered in our guide to Modelo 210, and you can run your own numbers in the Spain property tax calculator.

How to correct a cadastral error, step by step

Filing with the Catastro costs nothing. The money goes to the architect or surveyor whose paperwork supports the file.

1. Get the certificado catastral descriptivo y gráfico. Free from the Sede Electrónica with Cl@ve or a digital certificate, or over the counter at a Punto de Información Catastral, which many ayuntamientos host. Print it and set it beside the nota simple and the escritura.
2. Use model 900D. Since Orden HAC/1293/2018 a single declaration form has replaced the old 901N, 902N, 903N and 904N. The 900D covers change of owner or participation quota, new construction, extension, reform, demolition, grouping, segregation, division and change of use.
3. Assemble the file. Escritura or private contract, passport and NIE, the municipal works licence, the architect's certificate and the certificado final de obra for anything built, plus plans and photographs. Without the licence, a new-construction declaration turns into a planning question rather than a cadastral one.
4. File within two months of the day after the fact you are declaring. Electronically through the Sede Electrónica, in person at the Gerencia Territorial del Catastro in Alicante, Murcia, Valencia or Almería, or through a PIC office. A gestor or lawyer can file on a power of attorney.
5. Wait. The Catastro has six months to resolve a declaration procedure. The IBI roll closes on 1 January, so a correction accepted in October generally changes your bill from the following calendar year.
6. Appeal within one month if the value they assign is wrong. Choose either a recurso de reposición to the Gerencia or a reclamación económico-administrativa to the Tribunal Económico-Administrativo Regional, never both at once.

An architect's certificate for an obra nueva antigua declaration runs roughly EUR 400 to EUR 900 on the Costa Blanca. If the correction also needs a notarial deed to bring the extension into the Registro, add notary and registry fees in the region of EUR 700 to EUR 1,300, plus AJD on the declared cost of the works.

Four traps that catch foreign buyers

The valor de referencia is not the valor catastral

Ley 11/2021, the anti-fraud law, introduced the valor de referencia with effect from 1 January 2022. The Catastro calculates it from prices in notarised sales, applies a minoration factor of 0.9 set annually by ministerial order, and publishes it property by property. It is now the minimum taxable base for ITP on resales and for inheritance and gift tax. It has no effect on IBI, none on plusvalía, and it is not published for every rustic plot.

Buy a Torrevieja apartment for EUR 155,000 when its reference value is EUR 172,000 and the Comunitat Valenciana charges ITP on EUR 172,000. At 10% that is EUR 17,200 rather than EUR 15,500, so the mismatch costs EUR 1,700 you had not budgeted. You can pay and then claim it back through a rectificación de autoliquidación, but the burden of proof sits with you, the regional tax office has to ask the Dirección General del Catastro for a binding report, and you will need a valuation from an appraiser registered with the Banco de España, which takes months rather than weeks.

Check the reference value on the Sede Electrónica before you sign the contrato de arras, not after. It takes two minutes, and it belongs in the same conversation as your full cost breakdown.

Region	ITP on resale, general rate	AJD on new build	Note
Comunitat Valenciana (Valencia, Alicante province)	10%	1.5%	Reduced rates from 4% for habitual residence, large families and disability
Región de Murcia	8%	2%	Reduced rates from 3%, including some under-35 purchases
Andalucía (Almería province: Vera, Pulpí)	7%	1.2%	6% on habitual residence up to EUR 150,000

Rates and conditions change with each regional budget. Confirm the current figure with your lawyer or with the Agencia Tributaria before you transfer completion funds.

Unpaid IBI follows the property, not the seller

Article 64 of the Ley Reguladora de las Haciendas Locales attaches unpaid IBI to the property itself. Buy from an owner who stopped paying and the ayuntamiento can pursue the current year plus the four previous ones against your new flat. Community fees work the same way under article 9.1.e of the Ley de Propiedad Horizontal, covering the current year and the three previous ones. Ask for the last IBI receipt and a certificate that the seller is up to date with the community, and have your lawyer retain funds at the notary if either is missing.

After completion, notaries and registrars pass the change of owner to the Catastro automatically, so a separate declaration is usually unnecessary. The direct debit at SUMA or the ayuntamiento is not, so set it up in the first month: an unpaid bill collects a surcharge of 5% to 20%.

The pool that exists in the aerial photo but not in the deed

The Catastro updates from aerial imagery. A pool, a closed terrace or a casita at the bottom of the garden shows up in the cadastral record within a few years of being built, whether or not anyone declared it. The Registro only knows what someone took to a notary.

Three outcomes matter to a buyer. If the build sits in both records with a licence, you are fine. If it sits in the Catastro but not the Registro, your lender may refuse to value it and you will need a declaración de obra nueva to regularise, which requires the works licence or, for older builds, an architect's certificate of age plus proof that the planning infringement period has expired. If it appears in neither record, treat it as a planning risk until the ayuntamiento says otherwise, and take particular care on rustic land, where infringements on protected soil never prescribe.

The Catastro can also back-bill. When a regularisation procedure catches an undeclared build, the Catastro revalues the property and the ayuntamiento can claim IBI for the four preceding years.

The square metres in the listing are not the square metres in the Catastro

Spanish records use several surface concepts and portals mix them freely. The Catastro's superficie construida for a flat usually includes a share of common areas such as stairwells and landings. The superficie útil, the space inside your own walls, runs roughly 10% to 15% lower. The escritura may simply repeat a figure from a 1980s deed that nobody has checked since.

When those numbers drive your decision, and on a purchase over EUR 300,000 they should, compare the cadastral certificate, the nota simple and the floor plan before you make an offer. On a new build, the developer's measurements match the Catastro only after the obra nueva is registered, which sometimes lags delivery by months.

Frequently asked questions

Is the cadastral reference the same as the finca registral number?

No. The cadastral reference is 20 alphanumeric characters issued by the Catastro. The finca registral is a number issued by the local Registro de la Propiedad, written as a registry name plus a number and often a volume, book and folio. One property has both, and one of them being correct does not make the other correct.

Can I find out who owns a property from its cadastral reference?

Not through the Catastro, where owner identity is protected data. The route is the Registro de la Propiedad: request a nota simple informativa for the finca, which costs roughly EUR 9 online at registradores.org and names the registered owner along with any mortgage or charge. That document, not the cadastral record, proves who can sell you the property.

The Catastro says 96 m2 and my escritura says 88 m2. Which one is right?

Usually both, measuring different things. The cadastral figure typically includes a share of common areas and any terrace, while the deed may carry an older or narrower measurement. If the gap runs beyond about 15%, or if the difference is a whole room rather than a rounding, hire a surveyor and then correct whichever record is wrong, through a 900D declaration at the Catastro or a deed of rectification at the Registro.

Does a high valor catastral mean my property is worth more?

No. It is an administrative figure from a municipal ponencia de valores that may be 15 years old, and by law it sits below market value. A high valor catastral means a higher IBI bill and a higher imputed-income base for your non-resident annual tax. Buyers price your property from comparable sales, not from the Catastro.

Do I need a digital certificate to use the Sede Electrónica del Catastro?

Not for the basics. Anyone can search by address or map and read the reference, the surface, the use and the year of construction. Cl@ve or a digital certificate unlocks protected data, official certificates and the filing of declarations. A gestor or lawyer holding your power of attorney can do all of it for you.

Next steps

Pull the free cadastral certificate for the property, then set it beside the nota simple. If the two disagree, send us both documents and we will tell you which one to fix. Contact Wesna, or browse live stock in Torrevieja.