Marbella Property Due Diligence Stack: The 14-Day Pre-Arras Checklist 2026

The 14 calendar days between offer acceptance and arras signing are the highest-leverage period of the entire Marbella property transaction. In these days the buyer's lawyer retrieves and reviews approximately eight documents that collectively define the legal, fiscal, and operational reality of the property. What the stack reveals shapes whether the arras moves at the negotiated price, moves at a reduced price after renegotiation, or does not move at all because the property is structurally unfit for purchase.

A buyer who accepts a contrato de reserva that compresses the due-diligence window to under 10 days, or who waives any of the eight checks, is gambling. A buyer who insists on the full 14 days and the full stack — and who walks away when the stack surfaces material issues the seller will not address — does not lose deals; the buyer wins by avoiding the deals that should not close.

This article walks through the complete pre-arras due-diligence stack as it is operated by competent Marbella conveyancing firms in 2026 — the eight document categories, what each tells you, what each costs, the realistic timeline, and the findings that should kill a deal versus negotiate price reductions.

Why the 14-day window exists

The standard Marbella transaction sequence is: written offer (day 0) → seller acceptance (day 1-3) → contrato de reserva signed and reservation deposit paid (day 5-10) → 14-21 day due-diligence window → arras signing and 10% deposit paid (day 21-35) → 60-90 day window to escritura → escritura signing and balance paid.

The 14-21 day window between contrato de reserva and arras is the structural moment for due diligence because: the property is off-market (the seller has committed not to entertain competing offers), the buyer has paid only a relatively small reservation deposit at risk, and the arras is the next document — and arras carries the 10% binding deposit that materially changes the buyer's exposure.

Due diligence findings during this window translate to: (a) confirmation that the deal can proceed at the agreed price; (b) renegotiation based on documented issues, with the seller typically accepting price reductions for issues the buyer evidences; or (c) buyer withdrawal with reservation deposit forfeit (the small €6K-€30K cost of avoiding the much larger arras commitment on a problematic property).

The 14-day window is operationally achievable because the eight document streams run in parallel rather than serially. Competent conveyancing firms execute the stack in 10-14 days routinely.

For the upstream offer-letter mechanics see offer letter mechanics article; for the reservation contract distinction see arras vs reservation article.

Document one: nota simple (registry extract)

The foundation document. A nota simple is the brief informational extract from the Registro de la Propiedad showing the property's current registered owner, the property's registered description (size, boundaries, building registration), and any charges registered against the property — mortgages, embargos, court orders, easements, usufructs, and other legal encumbrances.

Why it matters: the Registro de la Propiedad has constitutive force under the Ley Hipotecaria. What is registered defines the legal reality of the property regardless of seller or agent claims. The nota simple is the only document that authoritatively establishes who owns the property, what the property legally consists of, and what is registered against it.

How to retrieve: online via the Registradores de España portal (https://www.registradores.org) with the cadastral reference or the registry inscription details; or in person at the relevant Registro de la Propiedad office. Cost €9-€30 for the standard extract; €20-€50 for the extended historical extract.

Time: 1-2 business days online; same-day in person.

What to check: (1) registered owner matches the person the buyer is contracting with; (2) property description matches what was viewed; (3) no mortgage or charge that the seller has not disclosed and that will not be cancelled before or at escritura; (4) no embargo (court order against the property); (5) no easement that materially affects use; (6) no usufruct or other partial interest held by a third party.

Common findings: about 8-12% of Marbella nota simples surface meaningful issues the seller did not volunteer. Most common: residual mortgage charges from prior years that the seller intends to cancel but has not yet (manageable with cancellation order at escritura); easements for shared access that affect property use (manageable with documentation); embargos from creditor actions (often deal-killing without clear resolution path).

The nota simple should be retrieved fresh within 30 days of arras signing and again within 7 days of escritura signing to ensure no new charges have been registered.

Document two: cadastral certificate and reference value

The Catastro (Spanish cadastre) is a separate administrative system from the Registro de la Propiedad. Both describe the same physical property but for different purposes — Registro for legal title, Catastro for tax and physical description.

Cadastral certificate (certificación catastral). Documents the cadastral reference, the physical description (built area, land area, year of construction, use classification), and the cadastral value (a separate value from market value, used for IBI calculation). Retrieved online from the Sede Electrónica del Catastro with the cadastral reference; free for the cadastral holder, small fee for third parties. Time: same-day or 1-2 business days.

Catastro-Registro matching. Critical: the property as described in the Registro should match the property as described in the Catastro. Mismatches are common and significant. Common mismatches: built area differs by 10-50 sqm (typically Catastro shows more than Registro, indicating unregistered construction); boundary lines differ (indicating a possible boundary dispute or survey error); use classification differs (e.g., Catastro shows commercial use but Registro shows residential).

Mismatch implications: depending on the nature, range from administrative annoyance (correctable by simple application) to material deal issue (unregistered construction may be illegal and unmarketable, may face demolition order, may be undeducted from sale price). For deep-dive see cadastral verification article.

Valor de referencia. Since Law 11/2021 the Cadastro publishes a reference value per property that serves as the minimum tax base for transfer-related taxes (ITP for resale). If the actual purchase price is below the valor de referencia, transfer tax is calculated on the reference value rather than on the price. The valor de referencia is retrieved free online with the cadastral reference. Most arm's-length Marbella resale transactions at €2-15M have negotiated prices above the valor de referencia, so the issue does not bind; for transactions below the reference value, the additional ITP cost should be factored.

Time: same-day retrieval. Cost: free.

Document three: IBI history (property tax history)

IBI (Impuesto sobre Bienes Inmuebles) is the annual municipal property tax. The IBI history shows the current annual amount, the recent payment history, and any outstanding amounts.

Why it matters: outstanding IBI transfers to the new owner under Spanish tax law for the current year and the past 4 years if not paid. A property with €8,000 of unpaid IBI from prior years becomes the buyer's liability at closing. Additionally, the IBI history reveals the actual annual carrying cost rather than the rough estimate the agent provides.

How to retrieve: the buyer's lawyer requests from the municipality's tax department (recaudación municipal). For Marbella, the Patronato de Recaudación Provincial de Málaga handles IBI for the municipality. The lawyer typically obtains a certificate (certificado de deudas tributarias) showing the property is current or showing outstanding amounts.

Time: 3-7 business days. Cost: typically €15-€60 administrative fee.

What to check: current IBI amount aligns with what the agent represented (variances of 5-20% are common because IBI is recalculated based on cadastral value and rate changes); no outstanding amounts that will transfer; no special assessments or surcharges. For deeper analysis of IBI across municipalities see Marbella IBI rate cross-municipality article.

Document four: community fee status

The community fee certificate (certificado de estar al corriente en el pago de cuotas) is issued by the community administrator confirming the property is current on community fees as of a specific date.

Why it matters: Spanish law transfers community fee debt to the new owner for the current year and the past 3 years under Article 9.1.e of the Ley de Propiedad Horizontal. A property with €15,000 of unpaid community fees from the prior owner can become the buyer's problem at closing.

How to retrieve: buyer's lawyer requests from the community administrator (administrador de fincas). The administrator issues the certificate with a date of currency, typically valid for 15-30 days.

Time: 3-10 business days. Cost: €30-€100 charged by the community administrator.

What to check: (1) property is current on fees; (2) current fee amount and the past 3 years' fee history; (3) any imminent extraordinary derrama (special assessment); (4) any community-level dispute or litigation that may affect the property.

Additional document to request: the past 12 months of community meeting minutes (actas de la comunidad). The minutes reveal active disputes, planned major expenditure, changes to community rules, and the general tone of community management. A community with active dispute or imminent major derrama is a community whose fees and lived experience will change after closing.

Document five: urbanism certificate

The certificado urbanístico (urbanism certificate) is issued by the municipality and confirms the property's compliance with the applicable urbanism plan (PGOU — Plan General de Ordenación Urbana for Marbella) and any specific permits or licences associated with the property.

Why it matters: Marbella has historic urbanism complications. The Plan General de Ordenación Urbana de Marbella (PGOU) was approved in 2010 after a long period of irregular construction; substantial inventory exists with construction that was built without proper licence and that has been variously regularised, partially regularised, or remains irregular. The urbanism certificate documents the official status.

How to retrieve: buyer's lawyer requests from the Ayuntamiento de Marbella urbanism department (Gerencia Municipal de Urbanismo).

Time: 5-15 business days. Cost: typically €50-€200 administrative fee.

What to check: (1) the building has the original construction licence (licencia de obras); (2) any extensions or modifications have the appropriate licences; (3) the certificate of occupancy (licencia de primera ocupación or cédula de habitabilidad — see cédula de habitabilidad article) exists; (4) no enforcement order (orden de demolición, orden de restauración de la legalidad urbanística) is pending against the property; (5) the use classification matches the actual use.

Common Marbella findings: unlicensed pool houses, unlicensed enclosed terraces, unlicensed basement conversions, unlicensed guest casitas, boundary-violating constructions. Each ranges from minor (regularisable with retroactive fee) to severe (demolition order). The buyer's lawyer's analysis should specify which category each finding falls into and the realistic remediation path.

Document six: energy certificate (CEE)

The certificado de eficiencia energética (CEE) is mandatory for any property sale or rental under Royal Decree 235/2013. The CEE grades the property A (most efficient) through G (least efficient) and is valid for 10 years.

Why it matters: the CEE must be in place at the time of sale; absence delays the transaction. The grade affects future operating costs (electricity, heating, cooling) and, increasingly, mortgage-lending decisions (some Spanish lenders apply rate adjustments based on energy grade).

How to retrieve: the seller's responsibility to provide. The buyer's lawyer should request a copy and verify validity (10-year window from issuance).

Time: should already exist; if not, the seller must obtain (1-3 weeks). Cost to the seller: €150-€500 depending on property size.

What to check: (1) CEE exists and is current; (2) the grade is reasonable for the property type (A-C is good; D-E is typical for older properties; F-G indicates significant inefficiency); (3) the certificate's recommendations for improvement (often included) inform future capex planning.

Document seven: ITE / IEE building inspection (if applicable)

For multi-unit residential buildings over 50 years old in Andalucía, an Informe de Evaluación de Edificios (IEE) or older Inspección Técnica de Edificios (ITE) is generally required and renewed every 10 years. For single-family villas the obligation typically does not apply.

Why it matters: an apartment building in Marbella Centro or on the Golden Mile that is 60-80 years old should have a current IEE; absence can result in municipal enforcement and may delay or prevent mortgage approval.

How to retrieve: the community administrator should have the current IEE for the building. The buyer's lawyer requests as part of the community status verification.

Time: same as community fee certificate retrieval. Cost: included in community administrator fees.

What to check: IEE exists and is current; the assessment graded the building as acceptable rather than requiring major remediation; any required remediation work is scheduled and funded by the community.

Most Marbella villa transactions do not encounter the IEE issue; apartment buyers in older buildings should specifically verify.

Document eight: pending litigation search

Pending litigation involving the property — boundary disputes with neighbours, community disputes, claims by third parties, judgment liens — can materially affect the property's value and marketability.

How to retrieve: the buyer's lawyer conducts searches of: (1) the Registro de la Propiedad nota simple (which would show registered embargos); (2) the relevant Juzgado de Primera Instancia courts in Marbella for pending civil litigation against the seller or relating to the property; (3) the Marbella Ayuntamiento for any administrative proceedings involving the property; (4) inquiry to the community administrator for any community-level litigation.

Time: 3-7 business days. Cost: €100-€500 in administrative fees and lawyer time.

What to check: any pending civil litigation; any administrative proceeding; any boundary dispute; any community-level dispute that affects the property.

Findings here range from immaterial (a long-resolved historical dispute) to deal-killing (active boundary litigation with a neighbour that affects the property line). The buyer's lawyer should evaluate each finding for material impact.

What findings should kill a deal vs negotiate

The 14-day stack typically surfaces a mix of immaterial, negotiable, and deal-killing findings. Categorisation is judgment-intensive; broad framing follows.

Negotiable findings (price reduction discussion). Cadastral mismatches that are correctable (3-20K remediation cost reflected in price); unlicensed but regularisable construction (regularisation fee and any administrative cost reflected in price); deferred community maintenance with imminent derrama (the imminent derrama amount discounted from price); IBI or community fee arrears that the seller will clear at escritura (no impact on price if cleared; otherwise discount); minor energy certificate grade issues that can be improved with modest investment (the investment cost reflected in offer).

Deal-killing findings (typical walkaway zone). Active demolition order against the property; major unregistered construction that cannot be regularised; pending litigation that affects title or boundary; charges or embargos the seller cannot or will not clear; major cadastral mismatch involving illegal construction; community in severe financial distress with multiple imminent derramas the buyer cannot quantify; seller cannot deliver clear title due to inheritance or marital complication.

Findings that require deeper investigation. Boundary discrepancies that may be survey error or may be encroachment; community minutes showing active dispute but unclear severity; energy certificate grade markedly worse than expected; structural signals from the building inspection that need engineering assessment.

The buyer's lawyer's role is to categorise findings clearly and present recommendation rather than a list of facts. Buyers who receive only fact lists ("the cadastre shows 220 sqm but the registry shows 180 sqm") and not recommendations ("the discrepancy is a 40 sqm unregistered ground-floor extension; regularisation is achievable in 3-6 months at approximately €4-€8K cost; recommend price reduction of €15-25K reflecting risk and inconvenience") are paying lawyer fees but not getting lawyer value.

After due diligence: the arras decision

At the end of the 14-21 day window the buyer has one of three decisions to make.

Decision one: proceed to arras at the agreed price. Due diligence surfaced no material issues, or surfaced minor issues the buyer accepts at the agreed price. Arras drafting begins; see arras deposit mechanics article.

Decision two: renegotiate. Due diligence surfaced material issues with documented remediation cost; buyer requests price reduction reflecting findings. Seller accepts (typical outcome when findings are documented and reasonable), accepts partially, or rejects. If rejected, decision three applies.

Decision three: withdraw. Due diligence surfaced deal-killing findings or seller refuses reasonable price adjustment. Buyer invokes the resolutive condition in the contrato de reserva, withdraws, and recovers the reservation deposit (typically minus a small administration fee depending on contract terms).

The withdrawal route is operationally easy when the resolutive condition has been properly drafted in the reservation contract. Buyers who skipped the resolutive condition or who agreed to language too vague to enforce ("subject to satisfactory due diligence") face a harder withdrawal — the seller may argue the buyer's withdrawal was discretionary and forfeit applies.

For the broader due-diligence framework see also our property due diligence checklist which focuses on the operational checklist; this article focuses on the document stack itself.

When to call Muse

Before signing the contrato de reserva. The reservation contract's terms — particularly the due-diligence window length, the resolutive conditions, and the contingencies — control the entire pre-arras phase. By the time the lawyer sees a signed reservation contract, half the protections that should be negotiated upstream are already foreclosed.

Founder Max Bykov reviews reservation contract drafts personally for transactions above €3M and coordinates the due-diligence stack across two preferred Marbella conveyancing firms whose document retrieval pipelines are tightly built. The complete 14-day stack typically runs €1,500-€4,500 in lawyer fees and document costs combined and routinely saves 5-15x that in price renegotiation or deal-killer detection.

WhatsApp Max on +34 600 231 113 or email maxim@musemarbella.es. Two offices in Marbella; the team handles the due-diligence orchestration on approximately 95 transactions per year.