Property valuation in Spain in 2026: how the tasacion works under Order ECO/805/2003 and the 2025 sustainability reform

A property valuation in Spain, the tasacion, is the formal figure a bank relies on to decide how much it will lend against a home. It is not a survey, not an asking price and not a tax assessment; it is a legally defined number produced under Order ECO/805/2003 by a homologated society of tasacion or an approved bank service, using one of four prescribed methods the law attaches to the property type. The result almost always lands below the asking price because the principle of prudencia is mandatory for mortgage purposes, which strips out speculative and volatile elements. In a market where Tinsa’s IMIE General index recorded 15.6 per cent year on year growth in June 2026 and INE’s house price index showed 12.9 per cent in the first quarter, that gap between asking price and bank valuation widens further. This guide sets out how the framework works after the 2025 sustainability reform, who the perito tasador is, how the tasacion differs from a tasacion pericial, and what each of the four Spanish value figures means for a buyer.

What is a tasacion and who produces it?

A tasacion is the regulated valuation a Spanish bank uses to set the maximum mortgage it will grant against a property. The figure is produced under Order ECO/805/2003, which governs the valuation of real estate for certain financial purposes including mortgage guarantee, insurance technical provisions and pension fund assets. The Order states in its preamble that it builds on Real Decreto 775/1997, the regulation that sets the regime for homologating valuation services and societies.

Only two types of entity may legally produce a tasacion for mortgage purposes. The first is a sociedad de tasacion homologada, a specialist valuation company approved and registered by the Banco de España. The second is an internal tasacion service inside a credit entity, also homologated and registered. Real Decreto 775/1997, Article 3, sets the structural requirements for a society of tasacion: a minimum number of ten qualified professionals, at least three of whom must be linked professionals with three years of valuation experience, civil liability cover, and a sole corporate purpose limited to valuation. A general estate agent, a notary or a surveyor working freelance cannot produce a legally valid tasacion.

The individual who signs the report is the perito tasador, defined in Article 4 of ECO/805/2003 as the professional who must necessarily subscribe the valuation report. Real Decreto 775/1997, Article 2, defines who qualifies as a professional: architects and architectural technicians (arquitectos and aparejadores or arquitectos tecnicos) for urban property and residential land, and engineers or technical engineers of the relevant speciality for other property types. This is the figure a buyer commissions, indirectly through the bank, when they apply for a Spanish mortgage. If you are weighing whether you also need a structural survey alongside the tasacion, our property survey guide covers the difference.

What does Order ECO/805/2003 actually require?

Order ECO/805/2003 is the technical rulebook for Spanish mortgage valuations. It entered into force on 9 October 2003, six months after publication in the Boletin Oficial del Estado, and it has been amended several times since. The most recent substantive amendment is Order ECM/599/2025, signed by the Minister of Economy, Carlos Cuerpo Caballero, on 10 June 2025 and effective from 12 August 2025 (two months after BOE publication, per its disposicion final segunda). The Order sets out the principles, definitions, methods and formal requirements a tasador must follow.

Article 3 lists the principles that govern every valuation. The most important for a buyer to understand is the principio de prudencia, the principle of prudence. Article 3.1.f states that where several equally probable scenarios exist, the tasador must choose the one that gives the lower valuation. Crucially, Article 3.2 makes prudencia mandatory for valuations used for mortgage guarantee, insurance technical provisions and pension fund purposes. This is the legal mechanism that pulls a bank valuation below an asking price: the tasador is not free to pick the most optimistic number, the law directs them to the prudent one.

Article 4 defines the key values. Valor de mercado (VM) is the price a property could sell for in an orderly private sale between a willing seller and an independent buyer on the valuation date. Valor hipotecario (VH) is a prudent measure of the property’s sustainable long term value that excludes speculative elements. Valor de tasacion (VT) is the figure the Order establishes as the legally valid value for each purpose; for mortgage guarantee it is the valor hipotecario. The distinction matters because a bank lends against the valor hipotecario, not the valor de mercado, and the two can diverge by 10 to 20 per cent in a rising market.

What did Order ECM/599/2025 change?

Order ECM/599/2025 is the first major update to the Spanish valuation framework in over two decades, and it aligns the tasacion with European sustainability and digitalisation standards. Six changes matter for a buyer in 2026.

First, a new principio de sostenibilidad was inserted into Article 3. The tasador must now consider, whenever the market values them, the environmental attributes that affect the property’s price: energy efficiency, resilience to flooding or fire, the carbon footprint of materials, and physical or transition climate risks. These factors enter the selection of comparable transactions and the adjustment process, so a poorly insulated apartment in a flood-exposed coastal strip can now be marked down where the market reflects that exposure. The Order’s explanatory note connects this to the EU Taxonomy delegated regulation (Reglamento Delegado (UE) 2021/2139), which sets technical criteria for substantial contribution to climate mitigation and adaptation in construction and real estate activities.

Second, the energy performance certificate (CEE) is now mandatory in every valuation file. The tasador must have the CEE available when applying the comparison method, so the building’s energy demand and emissions data feed directly into the comparable selection and homogenisation. The Order’s explanatory note connects this to EU Directive 2024/1275, which obliges the worst-performing buildings to be upgraded, affecting their medium-term value.

Third, the surface basis shifted. The Order now prioritises useful surface area over the constructed-with-commons area that had been the industry default, and terraces are no longer counted as useful surface even when they are for private use. If the tasador uses a different surface measure, they must justify it expressly and apply a correcting coefficient.

Fourth, rules for automated valuation models (AVMs) were added, conforming to Article 44 bis of Real Decreto-ley 24/2021. The technical development is delegated to the Banco de España via circular, so AVM-assisted valuations now have a legal framework rather than operating in a grey zone.

Fifth, the coefficient hipotecario warning window was extended. The “high probability of significant reduction” that triggers a cautionary note now covers the 18 months after a tasacion expires, up from one year, and the three-year decline requirement was removed.

Sixth, a new licencia esencial figure was introduced for valuing buildings under construction, allowing a municipal pre-licence authorisation to serve as valid urbanistic documentation where it covers a substantial part of the works budget and is properly registered.

What are the four valuation methods under Order ECO/805/2003?

Article 16 of Order ECO/805/2003 prescribes four valuation methods. The tasador does not pick whichever gives the highest number; the Order attaches each method to specific property types and circumstances, and for a mortgage valuation the tasador often calculates several and takes the lowest.

The cost method (Seccion 2, Articles 17 to 19). This calculates a property’s value from the cost of reproducing it, deducting physical and functional depreciation. It is the default for buildings in project, under construction or being renovated, where there is no finished comparable to compare against. The result is the valor de reemplazamiento neto, the net replacement value, which is the gross replacement cost minus age related depreciation.

The comparison method (Seccion 3, Articles 20 to 23). This is the method most buyers recognise. It values a property by comparing it to recent sales and listings of similar properties in the local market, adjusting for differences in location, size, age and condition. Article 23 adds a key rule: when market data is thin or volatile, the tasador must apply a reduction of at least 10 per cent, and at least 15 per cent where price volatility is high. This reduction, applied to derive the valor por comparacion ajustado, is one of the structural reasons a bank valuation sits below an asking price.

The income capitalisation method (Seccion 4, Articles 24 to 33). The Order calls this the metodo de actualizacion de rentas. It values a property by discounting its future rental income back to a present value, requiring a representative rental market with at least six comparable rent data points or an active lease on the subject property. It is used for income producing property such as rental apartments, commercial premises and hotels.

The residual method (Seccion 5, Articles 34 to 36). This values land and development projects by subtracting the cost of construction, promotion and commercialisation from the expected sale value of the finished units. It comes in two forms, a dynamic procedure using expected cash flows and a static procedure using present values, and it applies to urban land, buildings in project and buildings under renovation.

For a finished home, Article 45 sets the rule a buyer most often meets: the valor de tasacion for mortgage purposes is the valor hipotecario, and for a standard owner occupied or empty residential property it is the valor por comparacion, adjusted where required. Where comparison is not possible, the tasador falls back to the income method, and if that is not possible either, the value is capped at the net replacement value. This cascade, always ending at the prudent figure, is the framework that governs what number the bank sends back.

Which valuation method applies to which purpose?

Order ECO/805/2003 governs valuations for specific financial purposes, but a Spanish property owner will encounter several different valuation regimes depending on the purpose. The method and the valuer change with the use case, and confusing them is a common source of error.

Purpose	Legal framework	Who values	Primary method	Key constraint
Mortgage guarantee	Order ECO/805/2003	Homologated society of tasacion	Comparison (finished homes), cost (new build), income (rental)	Prudencia mandatory; valor hipotecario
Covered bond eligibility	ECO/805/2003 + RD 716/2009	Homologated society	Same as mortgage	80 per cent max LTV
Insurance technical provisions	ECO/805/2003	Homologated society or bank service	Same methods	Prudencia mandatory
Pension fund assets	ECO/805/2003	Homologated society	Same methods	Prudencia mandatory
Transfer tax (ITP) base	Ley 11/2021 (Catastro)	Catastro (automatic)	Mass appraisal	Valor de referencia since 1 Jan 2022
Inheritance or gift tax (ISD)	Ley 29/1987	Independent perito	Tasacion pericial	Pericial contradictoria under LGT Art 135

The tasacion under ECO/805/2003 is the only one of these that uses the four prescribed methods and the principle of prudencia. The Catastro’s valor de referencia de mercado is a mass appraisal, not an individual valuation, and the tasacion pericial follows civil procedure and tax law, not the Order. A buyer who needs a figure for mortgage purposes cannot substitute a tasacion pericial, and a buyer who needs to challenge a tax assessment cannot use a tasacion hipotecaria. Our tasacion pericial contradictoria guide explains the tax challenge route in detail.

How do the four Spanish property values differ?

A buyer in Spain will meet at least four distinct value figures, and confusing them is one of the most common and costly mistakes. They are set by different bodies, for different purposes, and they are not interchangeable.

Value figure	Spanish term	Who sets it	What it is used for	Basis
Mortgage valuation (tasacion)	Valor de tasacion / valor hipotecario	A homologated society of tasacion or bank service, under Order ECO/805/2003	The figure a bank uses to set the maximum mortgage	Prudent valuation, excludes speculative elements
Market value	Valor de mercado	A tasador or any qualified valuer	A reference for negotiation, not a binding bank figure	The price in an orderly sale between independent parties
Cadastral value	Valor catastral	The Catastro (Dirección General del Catastro)	The base for IBI (council tax) and other municipal taxes	Administrative valuation, usually well below market
Referential market value	Valor de referencia de mercado	The Catastro, under Ley 11/2021	The taxable base for ITP, AJD and inheritance or gift tax since 1 January 2022	A fiscal reference, can sit above or below the sale price

The tasacion and the valor de mercado are both produced by a valuer, but only the tasacion is the legally binding figure for a mortgage, and it is always the prudent one. The valor catastral is an administrative figure used for local taxes and is typically a fraction of market value; our catastral value guide explains how it is set and why it matters. The valor de referencia de mercado is newer and more consequential for a buyer’s tax bill: introduced by Ley 11/2021 and effective from 1 January 2022 under a Resolucion of the Dirección General del Catastro of 10 November 2021, it is the base on which transfer tax is now calculated, not the declared sale price. A buyer who ignores it can face a tax assessment higher than the purchase suggests.

How does the tasacion hipotecaria differ from a tasacion pericial?

The tasacion hipotecaria and the tasacion pericial are both valuations, but they serve entirely different purposes and answer to different legal frameworks. Confusing them is a common source of error for buyers who assume one valuation will cover every need.

A tasacion hipotecaria is the regulated mortgage valuation governed by Order ECO/805/2003, produced by a homologated society of tasacion, and used by a bank to set the maximum loan against a property. It answers the question: how much will the bank safely lend? The perito who signs it must meet the qualification standards of Real Decreto 775/1997, and the report follows the Order’s prescribed methods, principles and formal requirements.

A tasacion pericial is a certified valuation produced by an independent perito (typically a perito arquitecto or perito ingeniero) for non-mortgage purposes: inheritance distribution, divorce settlement, expropriation compensation, insurance claims and tax disputes. It is not governed by Order ECO/805/2003 but by civil procedure rules and tax law. The most common use is the tasacion pericial contradictoria, a formal procedure under Article 135 of the Ley 58/2003 General Tributaria that lets a taxpayer challenge the value the tax administration has used to calculate transfer tax (ITP) or inheritance and gift tax (ISD).

The tasacion pericial contradictoria works as follows. When the administration notifies a liquidacion provisional based on a value higher than the one the taxpayer declared, the taxpayer has one month to request the procedure and appoint a perito. The administration produces its own valuation, and the taxpayer’s perito produces theirs. If the difference between the two is under EUR 120,000 and under 10 per cent of the taxpayer’s perito figure, the taxpayer’s value is accepted. If the difference exceeds either threshold, a perito tercero is appointed by sorteo from professional college lists and fixes the definitive value. If that third valuation exceeds the declared value by more than 20 per cent, the taxpayer bears the third perito’s costs; otherwise the administration does.

One important 2022 change: since the valor de referencia de mercado took effect on 1 January 2022, the tasacion pericial contradictoria is no longer available for dwellings, anejos and unbuilt rustic plots that have a reference value assigned. For those properties, the administration no longer runs the comprobacion de valores that triggers the procedure; the only recourse is to challenge the reference value directly before Catastro. The tasacion pericial contradictoria remains available for properties without a reference value (commercial premises, offices, shopping centres) and for transactions before 1 January 2022.

Why does the bank valuation come in lower than the asking price?

The gap between the asking price and the bank valuation is not the bank trying to lend less. It is a structural feature of the Spanish valuation framework, and three legal rules drive it.

First, the principle of prudencia (Article 3.1.f) forces the tasador to choose the lower figure where scenarios are equally probable, and Article 3.2 makes this mandatory for mortgage valuations. Second, Article 23 requires a minimum 10 per cent reduction, or 15 per cent in volatile markets, to the comparison value to derive the adjusted figure the bank uses. Third, the valor hipotecario by definition excludes speculative elements, so any premium the seller is banking on, a rumoured infrastructure project, a hoped for zoning change, a short term price spike, is stripped out by law.

The macro context in 2026 sharpens this gap. Tinsa’s IMIE General index recorded 15.6 per cent year on year growth in June 2026, with the Costa Mediterranea segment at 18.7 per cent, the highest of any market category. INE’s house price index for the first quarter of 2026 showed 12.9 per cent year on year, with second hand homes at 13.5 per cent and new build at 9.1 per cent. INE’s mortgage statistics for May 2026 recorded 42,213 new mortgages on dwellings, a 0.1 per cent year on year decline, with an average mortgage amount of EUR 174,866 at a 2.98 per cent average interest rate. When prices are rising at these rates, the asking price a seller sets in July reflects today’s market sentiment, but the tasacion a bank commissions must strip out the speculative premium the law requires it to ignore.

The practical consequence is a worked example. A seller lists a two-bedroom apartment in Marbella’s Casco Antiguo at EUR 500,000. The tasador finds five comparable registered sales averaging EUR 460,000, applies a 10 per cent reduction under Article 23 for a thin data set, and the valor por comparacion ajustado lands at EUR 414,000. The Tinsa Marbella city average for the second quarter of 2026 was 3,694 EUR/m2, up 18.31 per cent year on year, which sets the market context for the comparison: a seller listing well above that average is asking for a premium the tasacion’s prudent method will likely discount. The bank will lend a percentage of the EUR 414,000 figure, say 80 per cent, which is EUR 331,200, against a purchase price of EUR 500,000. The buyer must cover the EUR 168,800 gap, negotiate the price down, or walk away. This is the scenario our mortgage valuation challenge guide addresses in detail, and the non resident mortgage guide sets out how much a foreign buyer can actually borrow.

What loan-to-value will a Spanish bank apply to the tasacion?

The tasacion sets the ceiling against which the bank calculates the loan, but the loan-to-value (LTV) ratio determines how much of that ceiling the bank will actually advance. Spanish prudential rules cap the LTV for mortgages that enter the covered bond market.

Real Decreto 716/2009, which develops Ley 2/1981 de regulacion del mercado hipotecario, sets an 80 per cent maximum LTV for first-home mortgages eligible for inclusion in covered bond (cedulas hipotecarias) portfolios. Banks can lend above 80 per cent, but doing so requires additional provisioning under Banco de España rules, which is why most Spanish retail banks treat 80 per cent as the practical ceiling for resident first-home buyers and apply tighter limits for other cases.

In practice, non-resident buyers are usually capped at 60 to 70 per cent of the lower of the purchase price or the tasacion, because the bank carries a higher default and recovery risk on a borrower outside Spanish jurisdiction. Second-home and investment purchases, even for residents, typically fall in the same 60 to 70 per cent band. The LTV is always applied to the lower of the tasacion and the agreed purchase price, so if the tasacion comes in below the price (as in the worked example above), the lending base shrinks and the buyer’s required deposit grows. Our non-resident mortgage guide breaks down the realistic borrowing bands and current Euribor conditions for foreign buyers in 2026.

How long is a tasacion valid and what happens when it expires?

A tasacion certificate is not valid indefinitely. Article 62 of Order ECO/805/2003 sets the rule: the date of issue of the report cannot be more than two months after the last physical inspection of the property, and the certificate expires, necessarily, six months after its date of issue. After six months a bank will not accept it for a mortgage decision and a fresh inspection and report are required.

The two month rule between inspection and issue prevents a tasador from relying on stale site data. The six month expiry means a buyer who commissions a tasacion, then delays the mortgage application beyond half a year, pays for the valuation twice. In a fast moving market the expiry also protects the bank: a valuation done in January tells the lender nothing reliable about conditions in August. Under the ECM/599/2025 reform, the coefficient hipotecario warning now extends to 18 months after expiry, so a tasador must flag a heightened probability of significant value decline across a longer window.

What should a buyer do before commissioning a tasacion?

Three checks make the process cheaper and more predictable. First, compare the asking price to recent registered sale prices, not to listing portals, because listings are asking figures and are systematically inflated. Our cost of buying guide sets out the full acquisition cost framework, roughly 12 to 15 percent on top of the price, that the tasacion feeds into.

Second, check the valor de referencia de mercado on the Catastro before you commit. If it sits above your agreed price, your transfer tax bill will be calculated on the higher figure, and you may need to budget for the difference or prepare to challenge it.

Third, if you suspect the valuation will come in low, line up a second homologated society in advance. A bank will usually accept a tasacion from any society on the Banco de España register, not only its preferred one, so having a second quote ready can save a week of negotiation if the first figure caps your mortgage. The tasacion is a legal document, not a negotiation, but knowing the framework lets you read the number it returns and plan around it.