Arras vs Contrato de Reserva: The Two Spanish Deposit Contracts Most Marbella Buyers Confuse 2026

A Munich-based corporate principal made a verbal offer on a €7.2M villa in Cascada de Camojan in September 2025. The agent told him the seller had requested a €100,000 reservation deposit "to demonstrate serious commitment and to take the property off-market." The principal, accustomed to German real estate practice where reservation deposits of 10% are common, agreed without consulting his lawyer. He signed a one-page document the agent's office produced, transferred €100,000 to the seller's lawyer's escrow, and considered the property reserved. Three weeks later his lawyer's due diligence surfaced a cadastral mismatch involving an unlicensed 60 sqm basement conversion that the buyer wanted addressed before proceeding. The seller refused to reduce the price or to remediate. The principal wanted to withdraw. The "reservation contract" he had signed contained no resolutive condition for due diligence findings; the seller's lawyer argued that the €100,000 was forfeit. After three months of dispute, he settled for €60,000 forfeit and €40,000 returned. The €60,000 net loss was avoidable; the structural mistake was confusion between two Spanish deposit contracts.

This article walks through the distinction between contrato de reserva and arras that catches most foreign Marbella buyers, the operational sequence, what each contract does, what each costs to walk from, and the most common buyer mistakes that produce avoidable losses.

Two contracts, very different legal weight

Spanish property transactions involve a sequence of contracts moving from soft commitment to binding commitment. Most foreign buyers conflate the contracts, treating an upstream low-stakes contract as if it were a downstream high-stakes contract or vice versa. The conflation produces structural mistakes.

The two principal pre-escritura contracts:

Contrato de reserva (reservation contract). Upstream contract, signed shortly after offer acceptance. Takes the property off-market for a defined window (typically 14-30 days). Accompanied by a relatively small reservation deposit (typically €6,000-€30,000, sometimes larger for very large transactions). Limited binding force: a well-drafted version permits buyer withdrawal during the reservation period with at most reservation deposit forfeit, no specific-performance exposure.

Arras (typically arras penitenciales under Civil Code Article 1454). Downstream contract, signed 14-30 days after the reservation contract. Accompanied by the 10% binding deposit (typically minus the reservation deposit already paid). Substantial binding force: if the buyer walks, deposit forfeit (typically €500K on €5M property); if the seller walks, deposit returned doubled (typically €1M on €5M property).

The distinction is real and consequential. For the deeper mechanics of arras specifically including the three arras subtypes (confirmatorias, penitenciales, penales) see arras deposit mechanics article; this article focuses on the operational distinction between the two contract types and the typical buyer mistakes.

The transaction sequence in calendar time

Standard Marbella transaction sequence:

Day 0: written offer letter delivered to seller. Drafted by buyer's lawyer with explicit terms, expiry window (typically 48 hours), payment structure, contingencies. See offer letter mechanics article.

Day 1-3: seller acceptance. Seller responds in writing accepting, rejecting, or countering. After acceptance the transaction moves forward.

Day 5-10: contrato de reserva signed and reservation deposit paid. The reservation contract is drafted by either the buyer's lawyer or the seller's lawyer (or sometimes by the agent's office, though this is suboptimal). Both lawyers should review. The reservation deposit is paid to the seller's lawyer's escrow account, or sometimes to the seller directly under specific conditions.

Day 5-10 to day 21-30: due diligence window. Buyer's lawyer executes the document stack: nota simple, cadastral certificate, IBI history, community fee certificate, urbanism certificate, energy certificate, pending litigation search. See due diligence stack article. Technical survey is commissioned in parallel; see pre-purchase survey article. The 14-21 day window typically suffices for competent execution.

Day 21-35: arras signed and 10% deposit paid. If due diligence is clean (or material findings have been renegotiated to buyer satisfaction), the arras contract is signed. The 10% deposit is paid, typically by the buyer transferring the difference between 10% of price and the reservation deposit already paid. For a €5M property with €15K reservation deposit, the buyer pays €485K additional at arras to bring total deposit to €500K.

Day 21-35 to day 80-125: arras-to-escritura window. Mortgage approval if applicable, NIE if not yet held, currency conversion if applicable, balance funding preparation. Typical 60-90 days for cash transactions, 75-120 days for mortgage-financed. The window is specified in the arras contract.

Day 80-125: escritura signed and balance paid. At the notary office in Spain. Buyer pays balance (price minus arras deposit), receives keys, takes legal possession. See closing day walkthrough article.

The sequence has structural logic. The reservation contract creates the controlled window for due diligence under low-stakes commitment. The arras contract converts the transaction to binding once due diligence is clear. The escritura completes the transfer once funding and administrative readiness are achieved.

What the contrato de reserva actually does

The reservation contract performs three principal functions.

Function one: takes the property off-market for the reservation period. During the agreed period (typically 14-30 days), the seller agrees not to entertain competing offers, not to negotiate with other buyers, and to provide the buyer's lawyer with access to documentation needed for due diligence. The off-market commitment is the principal value to the buyer; without it the buyer cannot productively invest 14-21 days of professional fees and effort in due diligence.

Function two: establishes the basic transaction terms. The reservation contract typically specifies the agreed purchase price, the target date for arras signing, the target date for escritura, the buyer's identification, the seller's identification, the property's identification, and reference to any specific terms agreed in the offer letter. The arras and escritura that follow build on these terms.

Function three: includes the resolutive conditions for the due diligence window. A well-drafted reservation contract explicitly states what findings during the due diligence window permit the buyer to withdraw with full deposit return. Standard resolutive conditions include: material findings in the lawyer's document due diligence; material findings in the technical survey; failure to obtain NIE within a specified date; failure of mortgage approval at specified minimum loan amount and maximum interest rate; specific buyer-side conditions agreed in the offer letter.

The reservation contract that lacks explicit resolutive conditions or that contains only vague language ("subject to satisfactory due diligence") leaves the buyer with weaker withdrawal rights. The Munich principal's mistake at the article opening was signing a contract that lacked resolutive conditions; competent lawyer review would have surfaced and addressed this before signing.

For lawyer engagement standards see hiring Spanish lawyer article.

What the arras actually does

The arras contract performs different functions.

Function one: binds both parties to completion. Under arras penitenciales (the buyer-friendly default under Civil Code Article 1454), if the buyer walks, the deposit is forfeit (10% of price); if the seller walks, the deposit is returned doubled (10% × 2 = 20% of price). Either party retains a clean exit but the exit cost is material.

Function two: locks the price. The arras specifies the final agreed purchase price. The price cannot subsequently be renegotiated except by mutual agreement; either party that walks from a price disagreement pays the arras penalty.

Function three: establishes the path to escritura. The arras specifies the target escritura date, the balance funding structure, the buyer's funding source representations, and the various conditions and contingencies still alive in the arras-to-escritura window. For mortgage-financed transactions the arras typically includes the financing contingency (cláusula de financiación) permitting buyer withdrawal with deposit return if the specified mortgage approval is not obtained.

Function four: documents the specific arras subtype. Critically, the arras must specify which arras subtype applies — penitenciales, confirmatorias, or penales. The default if silent is confirmatorias under Tribunal Supremo doctrine (STS 24/03/2009), which is the buyer-unfriendly default. Express language under Article 1454 invoking arras penitenciales is essential for non-resident buyers. See arras deposit mechanics article for the deep mechanics.

The arras is therefore the contract of substance. The reservation is the contract of preparation. Both serve necessary functions; neither substitutes for the other.

What it costs to walk from each

Different exposure profiles depending on which contract is involved.

Walking from the contrato de reserva — clean resolutive condition fired. Due diligence surfaces a material adverse finding documented in the reservation contract's resolutive conditions (e.g., undisclosed embargo, urbanism enforcement order, material structural issue in survey). Buyer invokes the resolutive condition formally through lawyer correspondence. Reservation deposit returned in full. Typical timeline 7-30 days. Cost: legal fees on the engagement to date (€500-€2,500 typically), reservation deposit returned in full, no further liability.

Walking from the contrato de reserva — discretionary withdrawal. Buyer wants to withdraw for reasons not covered by the resolutive conditions (change of mind, change of life circumstances, finding a better property elsewhere). Reservation deposit typically forfeit. Some contracts specify reduced forfeit for early withdrawal or for documented life-event reasons; most do not. Cost: legal fees on engagement to date plus reservation deposit forfeit (€6K-€30K typically).

Walking from the arras as buyer (penitenciales). Buyer wants to withdraw after arras signing. Under arras penitenciales the 10% deposit is forfeit. The seller retains the deposit, the deal terminates, no further specific-performance exposure. Cost: legal fees, plus 10% deposit forfeit (€500K on €5M property). The financing contingency or other specific resolutive conditions in the arras may permit deposit return in specified scenarios.

Walking from the arras as buyer (confirmatorias — buyer-unfriendly default). If the arras was silently or accidentally drafted as confirmatorias (the default if Article 1454 is not expressly invoked), the buyer cannot lawfully walk by forfeiting the deposit. The seller can demand specific performance — i.e., force the buyer to complete at notary. Spanish courts grant specific performance in confirmatorias scenarios; the buyer's only escape is to prove material breach by the seller, which is a slow, expensive 18-30 month process with uncertain outcome. The buyer who learns after signing that the arras was confirmatorias is in a structurally bad position.

Walking from the arras as seller (penitenciales). Seller wants to withdraw after arras signing. Returns deposit doubled (10% × 2 = 20%). Deal terminates. Cost: 20% of price effectively (€1M on €5M property). Sometimes happens when the seller receives a materially better competing offer; the seller calculates that the higher offer minus the 20% double-deposit penalty still produces a net gain.

For seller-side perspective see Marbella selling process article.

The most common buyer mistakes

Three patterns recur across hundreds of Marbella transactions observed.

Mistake one: overpaying on the reservation deposit. A buyer keen to secure a property may agree to a €50K, €75K, or €100K reservation deposit instead of the typical €6K-€30K, on the reasoning that a larger deposit demonstrates commitment. The structural problem: the reservation deposit is at risk in the same way regardless of size. If due diligence subsequently surfaces a deal-killing finding and the resolutive condition fails to fire cleanly, the larger deposit is the larger loss. The reservation deposit's function is the off-market commitment; it does not need to be large. Sellers occasionally request a larger reservation deposit for negotiation reasons; the appropriate buyer response is to politely refuse and explain that the commitment is shown through the offer letter terms and the speed of moving to arras, not through reservation deposit size.

Mistake two: agreeing to arras below 10%. A buyer wanting to reduce binding exposure may agree to arras at 5% or 7% instead of 10%. The structural problem: the seller's reservation price typically does not move below the 10% threshold (sellers hold to 10% as their downside protection against buyer withdrawal). Accepting a lower arras may signal weak buyer commitment and may produce less favourable seller behaviour in subsequent negotiation. Higher arras (12-15%) sometimes appears in competitive bidding or in off-plan transactions where the developer wants more security; lower arras is rare in resale and signals either an unusual deal context or a structural mistake.

Mistake three: signing a reservation contract that lacks explicit resolutive conditions. A buyer accepting the agent's standard reservation contract template or the seller's lawyer's standard template, without buyer-lawyer review, often signs a document that lacks explicit resolutive conditions for due diligence findings. The contract leaves the buyer with weak withdrawal rights and the seller with strong forfeit arguments. The mistake produces the Munich principal's outcome at the article opening. The remediation is straightforward: every reservation contract must be reviewed by the buyer's lawyer before signing, and explicit resolutive conditions covering due diligence, technical survey, NIE issuance, and mortgage approval (if applicable) must be included.

A fourth, less common mistake: skipping the reservation contract entirely and moving straight to arras. Operationally possible (covered below) but structurally usually inferior to the standard sequence.

Can you skip the contrato de reserva?

Some Marbella transactions move directly from offer acceptance to arras signing without an intermediate reservation contract.

Situations where skipping happens. Buyer has completed substantial due diligence before offer (rare — typically only repeat Marbella buyers with prior transaction experience and existing professional infrastructure); parties are time-constrained and willing to compress the sequence; seller refuses the reservation structure (occasional in competitive bidding); transaction is part of a larger structured deal with custom contract architecture.

Structural argument against skipping. The reservation provides the 14-21 day window for the buyer to complete due diligence under a low-stakes contract before committing the 10% binding deposit. Skipping the reservation means the buyer either commits the 10% before due diligence (high risk because findings post-arras require seller cooperation for remediation or buyer absorption rather than clean withdrawal) or does due diligence before any contract (limited access because the seller has not committed off-market, and limited information because the seller may not provide full documentation pre-commitment).

The middle path occasionally used. A short-form contrato de reserva of 7-10 days with a clean withdrawal right and small deposit (€3K-€10K), followed by arras with a separate due-diligence resolutive condition in the arras itself permitting buyer withdrawal during a defined post-arras window if specific findings emerge. The middle path requires sophisticated lawyer drafting to ensure the post-arras resolutive condition is enforceable; many lawyers prefer to keep the conditions upstream (in the reservation) rather than downstream (in the arras) because Spanish courts are more receptive to upstream conditions.

The Muse desk default is the standard sequence (reservation → due diligence window → arras → escritura window → escritura). Buyers and sellers occasionally agree to compressed structures; the structural cost is real and should be priced explicitly.

This reservation-to-arras-to-escritura sequence is one of the 12 steps in the canonical buying process — for the broader 12-step framework with all parallel workstreams (NIE, banking, mortgage, currency, due diligence, tax filings, Land Registry inscription) see the Marbella property buying complete guide 2026.

When to call Muse

Before signing the reservation contract. The reservation contract's terms — particularly the due diligence window length, the resolutive conditions, and the deposit amount — control the entire pre-arras phase. By the time the lawyer reviews a signed reservation contract, half the structural protections have already been foreclosed.

Founder Max Bykov reviews reservation contract drafts personally for transactions above €3M and ensures the resolutive conditions match the buyer's due diligence and survey scope. The 30-45 minute pre-signing review consistently surfaces issues that would otherwise become disputes downstream.

WhatsApp Max on +34 600 231 113 or email maxim@musemarbella.es. Two offices in Marbella; the team coordinates the reservation, arras, and escritura sequence as standard buyer-side service. For the full transaction cost breakdown see property buying fees breakdown article.