The private sale contract (contrato de compraventa) in Spain: what it must contain and the step between arras and the escritura

A legally binding private document that commits buyer and seller to the full purchase price and a completion date, sitting between the reservation deposit and the notarial public deed.

What is a contrato de compraventa?

A contrato de compraventa is the private sale contract signed between buyer and seller in a Spanish property transaction. It is the second of three binding steps in the standard purchase process: first a reservation contract (or arras penitenciales) secures the property, then the contrato de compraventa sets the full terms, and finally the escritura publica before a notary formally transfers ownership. Article 1445 of the Civil Code defines the contract at its core: one party obliges itself to deliver a determined thing and the other to pay a certain price in money or a sign representing it. The contract is legally binding under Spanish law but cannot by itself transfer title; only the notarial escritura publica, registered at the Land Registry, does that. The private sale contract is the document where the real commercial commitment lives: the price, the completion date, the deposit, the conditions, and the penalties if either side walks away. For a full walkthrough of the buying process, see how to buy property in Spain as a foreigner.

How does the contrato de compraventa fit into the three-step purchase process?

The Spanish residential purchase follows a three-step sequence, and the private sale contract sits in the middle of it. Each step carries a different level of legal weight and financial exposure.

Step	Document	What it binds	Typical deposit	When it happens
1	Reservation contract or arras	Takes property off market for due diligence	EUR 3,000 to 6,000 (reservation) or 10% (arras penitenciales)	After offer accepted, before due diligence
2	Contrato de compraventa	Full purchase price, completion date, conditions	10% of price (if not already paid as arras)	After due diligence clears
3	Escritura publica	Formal transfer of ownership at notary	Balance of price (90%)	On completion date set in step 2

The reservation contract is a small good-faith payment that takes the property off the market while the buyer’s lawyer checks the land registry and the property’s encumbrances. The arras penitenciales, governed by article 1454 of the Civil Code, is a larger deposit (typically 10%) that commits both parties with a withdrawal penalty: the buyer forfeits or the seller returns doubled. The arras contract is explained in detail here. The contrato de compraventa is where the full terms are set out, including price, completion, and conditions. The escritura publica is the notarial deed that actually transfers the property, described in our guide to the Spanish notary in a property purchase.

What must a contrato de compraventa contain?

The Civil Code does not prescribe a rigid template, but a valid private sale contract for Spanish property must contain certain essential elements for the agreement to be enforceable and for the buyer to be protected.

Identification of the parties. Full names, NIE or NIF numbers, addresses, and marital regime of both buyer and seller. If a company is selling or buying, its corporate details and the representative’s authority.

Property identification. The physical address, the land registry details (finca number, registro, tomo, folio), the catastral reference, and a description matching the property deed types. The surface area, boundaries, and any communal elements or community participation share should be stated.

Price and payment method. The total purchase price, how it is paid (bank transfer, cheque), and the breakdown of any deposit already paid, the balance due at notary, and any amounts held in escrow. Article 1454 of the Civil Code governs the arras or deposit, allowing either party to rescind with the forfeit-or-double mechanism if the contract invokes that provision.

Completion date. The date by which the escritura publica must be signed before a notary. This is the deadline that triggers the formal transfer. A penal clause for delay is common.

Charges and encumbrances. A statement that the property is sold free of charges, or a specific list of encumbrances the buyer accepts (mortgage to be assumed, easements, community debts). The seller warrants peaceful possession under article 1474 of the Civil Code and is liable for hidden defects under articles 1484 to 1486.

Conditional clauses. The most common is a mortgage contingency clause (sujeto a obtencion de hipoteca), making the contract conditional on the buyer securing financing within a set period. A title contingency (sujeto a titulo limpio) makes completion conditional on the seller resolving any registry issues found during due diligence.

Penalty clauses. If either party defaults, the contract sets the consequences. The most common is the arras penitenciales mechanism: a buyer who withdraws forfeits the deposit, a seller who withdraws returns it doubled. A separate penal clause for delay beyond the completion date can also be included.

What does article 1451 of the Civil Code say about promise of sale?

Article 1451 of the Civil Code states that a promise to sell or buy, where there is agreement on the thing and the price, gives each party the right to demand reciprocal fulfilment of the contract. If the promise cannot be fulfilled, the general rules on obligations and contracts in the Civil Code apply. This provision matters because the contrato de compraventa is itself a promise of sale: the buyer promises to pay, the seller promises to deliver. If one party refuses to complete, the other can sue for specific performance (cumplimiento) or rescission (resolucion) with damages. This is the enforcement backbone behind the private contract. It is why the contract is not merely a formality but a legally enforceable commitment.

What are the seller’s obligations under the Civil Code?

The Civil Code imposes several warranties on the seller that operate through the private sale contract, even if the contract does not mention them explicitly.

Obligation	Article	What it means
Delivery and warranty	1461	Seller must deliver the property and warrant it
Legal possession	1474.1	Seller warrants peaceful legal possession of the property
Hidden defects	1474.2, 1484	Seller is liable for vicios ocultos that make the property unfit
Eviction	1475	Seller responds if a third party with a prior right deprives the buyer
Bad faith	1476	Any clause exempting the seller from eviction warranty is void if the seller acted in bad faith
Deed costs	1455	Seller pays notary deed costs; buyer pays for first copy and post-sale costs

Article 1474 of the Civil Code is central. It states that under the warranty of article 1461, the seller responds to the buyer for two things: first, legal and peaceful possession of the thing sold, and second, hidden defects it may have. Article 1475 defines eviction: the buyer is deprived by a final court judgment based on a right predating the purchase. The seller responds for eviction even if the contract says nothing, though the parties can adjust this obligation. Article 1476 makes any clause exempting the seller from eviction warranty void if the seller acted in bad faith.

What remedies does a buyer have for hidden defects (vicios ocultos)?

Articles 1484 to 1486 of the Civil Code give the buyer a statutory warranty against hidden defects on resale property, distinct from the developer liability under the LOE for new builds. Article 1484 states that the seller is liable for hidden defects that make the property unfit for its intended use or that diminish its value so much that, had the buyer known, they would not have bought it or would have paid less. The seller is not liable for defects that are manifest or visible, nor for defects a professional buyer should have identified.

Article 1485 extends this: the seller is liable even if they were unaware of the defects, unless the contract explicitly excludes this warranty and the seller genuinely did not know. Article 1486 gives the buyer two remedies. The buyer may choose to rescind the contract (accion redhibitoria) and recover expenses paid, or to claim a proportional price reduction (accion quanti minoris) determined by experts. If the seller knew of the defects and did not disclose them, the buyer can also claim damages on top of rescission.

Remedy	Legal basis	What the buyer gets
Accion redhibitoria	Art 1486 para 1	Cancel the sale, recover costs
Accion quanti minoris	Art 1486 para 1	Price reduction by expert valuation
Damages on rescission	Art 1486 para 2	Additional compensation if seller knew and concealed

What did Ley 12/2023 change for buyers signing a sale contract?

Ley 12/2023, de 24 de mayo, por el derecho a la vivienda (the right to housing law), in force from 26 May 2023, introduced a mandatory pre-contract information duty that directly affects anyone signing a contrato de compraventa. Article 31 of the law gives any person interested in buying or renting a home the right to demand, before formalising the transaction and before paying any deposit, a defined set of information about the property and the building.

The required information under article 31.1 includes:

• Identification of the seller or landlord and, where applicable, the estate agent acting as intermediary
• Economic conditions of the transaction: total price, included concepts, and financing or payment terms
• Essential characteristics of the dwelling and building, including habitability certificate, surface area (distinguishing private and communal), age of the building, services and installations, energy efficiency certificate, accessibility conditions, and occupancy status
• Legal information on the property: registry identification with charges, encumbrances and the community participation quota
• Whether the property is protected housing (VPO) and its regulatory regime
• Any architectural protection affecting the building

Article 30 of the same law extends the information duty to all agents operating in the residential sector, including estate agents and property administrators, requiring that all information be complete, objective, truthful, clear, comprehensible and accessible. This means that before a buyer signs a contrato de compraventa, they have a statutory right to a complete picture of the property, and the seller or agent who fails to provide it breaches the law. This is a meaningful change for the Spanish market, where pre-contract disclosure was previously a matter of negotiation, not a legal obligation.

What are the most common conditional clauses in a Spanish sale contract?

Conditional clauses (clausulas condicionales) protect the buyer from being forced to complete a purchase when a precondition has not been met. Three types are standard in Spanish practice.

Mortgage contingency (sujeto a hipoteca). The contract is conditional on the buyer obtaining a mortgage offer within a specified period, typically 30 to 60 days. If the bank declines, the buyer recovers the deposit and the contract is void. This is the most important clause for financed buyers. If the contract does not include this clause and the buyer cannot secure a mortgage, they risk forfeiting the deposit under article 1454.

Title contingency (sujeto a titulo). The contract is conditional on the seller resolving any encumbrances or registry defects discovered during due diligence. If the issues cannot be cleared within a set period, the buyer can withdraw without penalty.

Planning or licence contingency. Less common on resale, more common on off-plan or renovation purchases, this clause makes completion conditional on the relevant building or planning licence being in place.

What happens if the buyer or seller defaults?

The default consequences depend on whether the contract invokes the arras penitenciales mechanism under article 1454. If it does, the consequences are straightforward: a buyer who withdraws forfeits the deposit, and a seller who withdraws returns it doubled. On a EUR 500,000 purchase with a EUR 50,000 deposit (10%), a defaulting buyer loses EUR 50,000, and a defaulting seller must pay EUR 100,000.

If the contract does not invoke article 1454, the non-breaching party can sue for specific performance under article 1451, which gives each party the right to demand reciprocal fulfilment. The buyer can also claim damages for losses suffered. In practice, the arras penitenciales clause is the standard mechanism because it provides a predictable penalty without the cost and delay of litigation. For guidance on what can go wrong in the buying process, see common mistakes buying property in Spain.

The contract can also include a penal clause (clausula penal) for delay beyond the completion date, typically a daily or weekly fine. This is separate from the arras mechanism and applies to delay, not withdrawal.

Who pays which costs in a Spanish sale contract?

Article 1455 of the Civil Code sets the default cost allocation for deed formalisation: the seller pays the notary’s deed costs, and the buyer pays for the first copy and any subsequent copies. In practice, the parties often negotiate a different split, and the actual cost distribution is governed by local custom and the contract terms.

Cost item	Default rule	Practice
Notary deed (escritura)	Seller (art 1455)	Often split or buyer pays all
Land Registry	Buyer	Buyer
Transfer tax (ITP, resale)	Buyer	Buyer, 7% in Andalusia
IVA (new build)	Buyer	Buyer, 10% plus AJD ~1.2%
Plusvalia municipal	Seller	Seller
Estate agent fee	Per contract	Seller (listing side)
Lawyer	Each party own	Each pays own, ~1 to 1.5%

Total acquisition costs run to approximately 12 to 15% on top of the purchase price, covering transfer tax or IVA, notary, registry, lawyer, and mortgage costs where financed. The private sale contract should state clearly which costs each party bears to avoid disputes at completion.

How does the contrato de compraventa interact with the notarial escritura?

The private sale contract and the escritura publica are different legal instruments with different effects. The private contract is a bilateral obligation: the seller promises to sell, the buyer promises to buy. It does not transfer ownership. The escritura publica is the notarial public deed that formally transfers the property and is eligible for Land Registry inscription. The private contract sets the terms that the escritura will execute. On the completion date stated in the private contract, both parties appear before a notary, sign the escritura, and the buyer pays the balance. The notary verifies identity, checks the property’s registry status, confirms the price and tax obligations, and authorises the deed. Only after the escritura is signed and registered does the buyer become the legal owner. For a detailed account of the notary’s role, see the guide to the Spanish notary in a property purchase.

This guide is general information, not legal or tax advice. Rules change and individual circumstances differ. Verify current requirements with an independent lawyer (abogado) or tax advisor (gestor/asesor fiscal) before acting.