The obra nueva process in Spain: building control, licences and the first-occupation certificate (2026)

The obra nueva process in Spain: building control, licences and the first-occupation certificate (2026)

Building a new home in Spain runs through two distinct regulatory layers. The town hall controls the urban planning title that lets you start, and the Ley 38/1999 de Ordenacion de la Edificacion (the LOE) controls the building agents, their liabilities and the warranties that attach to the finished property. A foreign buyer who treats the Spanish new-build process as a single permit, the way it might work at home, will hit both layers at once and lose months. This guide walks the path from the first architect sketch to the first-occupation title, naming the agents the LOE requires, the licence the town hall grants, the Libro del Edificio the promoter must hand over, and the seguro decenal the notary checks before the deed can be signed.

Who are the building agents the LOE requires?

Spanish building law names every person in the process and fixes their duties by statute. The LOE (Ley 38/1999) sets out five core building agents plus the quality-control layer, and a foreign self-builder should know each one before signing a contract.

The promotor (Article 9) is the person who decides, drives, programmes and finances the work, whether for personal use or for onward sale. The promotor holds the right to build on the land, obtains the licences, signs the acta de recepcion and subscribes the warranties Article 19 requires. If you buy a plot to build a villa for yourself, you are the promotor. The proyectista (Article 10) is the technical author of the project; for a residential building (group a, Article 2.1) the habilitating qualification must be that of an architect. The constructor (Article 11) is the builder who contracts with the promotor to execute the work, designates the jefe de obra as the on-site technical representative, and signs the start and finish acts. The director de obra (Article 12) directs the technical, aesthetic, urban and environmental development, and for residential work must be an architect. The director de la ejecucion de la obra (Article 13) controls the material execution and quality, and for residential work must be an arquitecto tecnico (technical architect). Quality-control entities and laboratories (Article 14) assist the technical direction, and since the Ley 25/2009 reform they operate across Spain on a declaracion responsable filed with the autonomous community.

Agent	LOE article	Core role	Habilitating qualification (residential)
Promotor	Art 9	Initiates, finances, obtains licences, signs recepcion	Any (legal capacity)
Proyectista	Art 10	Authors the technical project	Architect
Constructor	Art 11	Builds, appoints jefe de obra, signs start and finish acts	Builder with required capacity
Director de obra	Art 12	Directs technical, aesthetic, urban development	Architect
Director de la ejecucion	Art 13	Controls material execution and quality	Arquitecto tecnico
Quality-control entity	Art 14	Verifies project, materials and execution quality	Declaracion responsable to the CC.AA.

The division matters because the liability windows in Article 17 run against every one of them, and the seguro decenal the notary checks at signing is keyed to this agent structure. If you are researching a plot purchase on the Costa del Sol, the agent question is the first cost variable after the land itself.

What licence do you need to start building?

Article 5 of the LOE states the baseline: building, works on existing buildings and their occupation require the preceptive licences and authorisations under the applicable planning law. The detail of which licence, and whether it is a full prior grant or a forward-declaration, is set by the autonomous urban planning law, not by the LOE.

In Andalusia, the framework is the LISTA, Ley 7/2021 de 1 de diciembre de impulso para la sostenibilidad del territorio de Andalucia, which replaced the older LOUA. The LISTA splits the urban planning title into two instruments:

1. Licencia urbanistica (Article 137) is the full municipal licence for acts that require substantive prior review, including new construction of a residential building that needs a full project. The town hall reviews the project against the PGOU (Plan General de Ordenacion Urbana), confirms the plot is a solar (suelo urbano with all services) or that the rustic-land autorisation is in place, and grants the licence before works begin.
2. Declaracion responsable (Article 138) is a sworn statement the promoter files at the town hall, declaring that the proposed work complies with the planning rules, backed by the required technical project or memoria descriptiva. It lets the work start from the day of filing, with the town hall checking afterwards. It is available for the lower-risk acts listed in Article 138.1, including minor works of scant constructive entity and technical simplicity that do not require a project, and the occupation of buildings already finished under a prior licence.

Title	LISTA article	When it applies	Starts the work	Town-hall review
Licencia urbanistica	Art 137	New build needing a full project; acts on protected land	After grant	Before works begin
Declaracion responsable	Art 138.1	Minor works without a project; first occupation of a finished, conforming building	From day of filing	After filing (posterior comprobacion)

The LISTA’s key structural move was to replace the old separate licencia de primera ocupacion for qualifying works with a declaracion responsable backed by the certificado final de obra (Article 138.3). The promoter no longer waits for a town-hall inspector to issue a licence to occupy; they file the sworn declaration with the architect’s final certificate, and the utilities can contract. The town hall reserves the right to check afterwards and to order restablecimiento de la legalidad (Article 157) if the declaration is false or the work does not conform.

The state baseline sits in the Real Decreto Legislativo 7/2015, the texto refundido de la Ley de Suelo y Rehabilitacion Urbana, which sets the basic duty to obtain a licence or file a comunicacion previa / declaracion responsable before any act of use, building or occupation. The autonomous law adds the procedural detail. For the renovation counterpart (not new build), see the refurbishment permits guide.

What must the technical project contain?

Article 4 of the LOE defines the project as the set of documents that define and determine the technical requirements of the works in Article 2. It must technically justify the solutions proposed against the applicable technical regulations. The Codigo Tecnico de la Edificacion (RD 314/2006, approved under LOE Disposicion Final Segunda) is the binding framework that sets the basic quality requirements for new-build works and for interventions in existing buildings, developing the functional, safety and habitability requirements in LOE Article 3.

The project is mandatory for new-build works of residential, administrative, sanitary, religious, educational and cultural use (Article 2.2.a), and for any intervention that alters the building’s architectural configuration, volume, structural system or characteristic use (Article 2.2.b). The architect redacts it, coordinates any partial projects (structures, installations, landscaping) and is responsible for their coherence (Article 4.2). It must carry the professional visado ( colegio stamp) where preceptive, and it is the document the town hall or the autonomous review is tested against.

For a self-build villa, the practical project contents are: the memoria descriptiva, the planos, the structural calculation, the installations project, the presupuesto, and the health and safety study under the RD 1627/1997 construction-safety rules. The quality-control entity (Article 14) and the technical architect (director de la ejecucion, Article 13) will verify the project and the works against this document throughout.

How does the build run, from start to final certificate?

The LOE structures the build into a defined sequence, each step carrying legal weight. The flow below is the statutory path for a developer-led residential new-build, which is the structure the notary and the Land Registry will later check.

Stage	LOE article	What happens	Key document
1. Project	Art 4, 10	Architect redacts the project; colegio visado	Proyecto de obra nueva
2. Licence / declaracion	Art 5; LISTA Art 137-138	Town hall grants licencia or accepts declaracion responsable	Licencia urbanistica or declaracion responsable
3. Start ( replanteo)	Art 11.2.f, 12.3.e, 13.2.e	Constructor, director de obra and director de la ejecucion sign the start act	Acta de replanteo
4. Execution	Art 12, 13	Director de obra directs; director de la ejecucion controls quality	Libro de Ordenes y Asistencias
5. Recepcion	Art 6	Constructor hands the finished work to the promotor; promotor accepts with or without reservations	Acta de recepcion
6. Final certificate	Art 12.3.e, 13.2.e	Director de obra and director de la ejecucion sign the certificado final de obra	Certificado final de obra
7. Libro del Edificio	Art 7	Director de obra delivers the full file to the promotor; promotor delivers to users	Libro del Edificio
8. Occupation title	LISTA Art 138.1.d	Promotor files declaracion responsable for occupation with the final certificate	Declaracion responsable de ocupacion

The acta de recepcion (Article 6) is the pivot. It is the act by which the constructor delivers the finished work to the promotor, who accepts it with or without reservations. The promotor has 30 days from the final certificate to reject the work for non-conformity, and if they stay silent, the recepcion is taken as tacit (Article 6.4). The one-year, three-year and ten-year liability windows in Article 17 all start to run from the date of the acta de recepcion (Article 6.5). The seguro decenal that the seguro decenal guide explains in detail runs for ten years from this same date.

What is the libro del edificio and why does the buyer need it?

Article 7 of the LOE makes the Libro del Edificio the building’s permanent documentation file. Once the work is finished, the director de obra hands the promotor the final project with any approved modifications, the acta de recepcion, the list of agents who intervened and the use and maintenance instructions for the building and its installations. The promotor must deliver the complete file to the end users.

For a buyer, the Libro del Edificio is the warranty and maintenance reference. It contains the architect’s structural design, the installations project, the final certificate, the use and maintenance manual, and the seguro decenal policy details. Without it, the buyer cannot know what maintenance the building needs to preserve the warranties, and a resale buyer cannot prove the liability chain back to the original agents. If a developer hands over a new-build apartment without the Libro, the LOE gives the buyer a concrete claim: the delivery is a statutory obligation, not a courtesy.

What warranties attach to the finished new build?

The LOE fixes three liability windows from the acta de recepcion, and a final seguro decenal that the notary checks before the deed. These are statutory, non-negotiable and run against every agent in the process.

Window	LOE article	What it covers	Who is liable
1 year	Art 17, final paragraph	Defects in finishing and appearance (elements de terminacion o acabado)	The constructor directly
3 years	Art 17.1.b	Defects in construction elements or installations that breach habitability (waterproofing, plumbing, wiring, insulation, ventilation)	All building agents; the promotor always solidarily
10 years	Art 17.1.a (the seguro decenal)	Structural defects in the foundation, supports, beams, floor slabs, load-bearing walls that compromise mechanical resistance and stability	All building agents; the promotor always solidarily

The seguro decenal (Article 19.1.c) is the mandatory insurance product that covers the ten-year window. For every developer-led residential building, the notary cannot authorise the deed of a new building, and the Land Registry cannot inscribe it, without proof that the seguro decenal is in force (Article 20). The policyholder is the promotor, the insured parties are the promotor and every subsequent buyer, and the minimum insured capital is 100 per cent of the construction cost plus professional fees. The cover follows the property, not the first owner. The only exemption is the autopromotor who builds a single-family home for personal use, and even that owner must take out the insurance before selling the property within the ten-year window, unless the buyer expressly waives it in writing.

The property guarantees and warranties guide sets out the wider consumer-protection layer. For the off-plan bank guarantee that protects advance payments during construction, see the dedicated guide; the bank guarantee and the seguro decenal run in sequence, not in overlap.

What is the first-occupation title and why does the notary need it?

The occupation of a new building in Andalusia requires a town-hall title. Under the LISTA (Article 138.1.d), the occupation or use of a building covered by a prior licence or declaracion responsable is itself an act subject to a declaracion responsable, provided the building is finished, conforms to the title and the use is permitted by the applicable rules. The declaracion responsable for occupation must be accompanied by the certificado final de obra (Article 138.3).

The practical effect is that the promoter no longer waits for a town-hall-issued licencia de primera ocupacion for qualifying works. They file the sworn declaration with the architect’s final certificate, and the utility companies (water, electricity, gas, telecoms) will contract the definitive supply on production of that title (LISTA Article on supplies). The town hall reserves the right to inspect afterwards and to order restablecimiento de la legalidad (Article 157) if the declaration is false, the work does not conform or the building does not meet the requirements for the intended use.

For the notary step, the first-occupation title (the declaracion responsable de ocupacion, or the traditional licencia de primera ocupacion where the town hall still issues one) is one of the documents the notary reviews to authorise the escritura de obra nueva. Without it, the notary cannot sign the deed that inscribes the new building in the Land Registry, and the property deeds and registry guide explains why that inscription is the step that gives the buyer real title protection against third parties.

How long does the whole process take?

There is no single statutory clock for the whole obra nueva path; each stage has its own. The project redaction depends on the architect’s workload and the complexity of the site. The town-hall licence resolution time for a licencia urbanistica in Andalusia is set by the LISTA and the local PGOU ordinances; the LISTA’s general regime for licencias does not impose a single fixed maximum, so check the municipal ordinance for the town in question, because complex projects on protected land or requiring environmental assessment run longer. The declaracion responsable, by contrast, lets works start from the day of filing (Article 138.5). The construction itself depends on the project size, and the recepcion, the final certificate and the Libro del Edificio follow within the 30-day window of Article 6.

For a realistic cost and timeline baseline for a Costa del Sol villa, the building and renovating cost guide covers the EUR per square metre figures from the valuation series. The licence path is the legal frame around that cost, and the building agents the LOE names are the people who carry the warranties you will rely on for the next decade.

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.