966 461 625 info@turnerinsurance.es WhatsApp
Facebook

Constructor's Liability Insurance in Spain

Rated by our clients on Google
↓ Jump to Frequently Asked Questions

Third-party liability and works damage cover for builders, developers, contractors and self-builders in Spain.

Get a Free Quote →
Quick Answer. Constructor's Liability Insurance in Spain
Decenal mandatory?Yes — new builds (Ley 38/1999, LOE)
Typical premium€1,500–€8,000+ per project
Cover term10 years from final certificate
RC obrasAdd-on for site liability
Self-builders (autopromotor)Decenal still required

Answered by Turner Insurance Specialists — exclusive Generali agents in Spain since 2007, based in Javea (Alicante). Talk to a real adviser in English: 966 461 625.

Spanish Insurance Law: Constructor's Liability & Decennial. Key Facts, Limits & Exclusions

The legal framework, waiting periods, exclusions and sources every buyer should know. We link the sources inline to the BOE (Boletín Oficial del Estado) and the Spanish regulators.

Legal framework

Decennial structural insurance (Seguro Decenal) is mandatory for new residential construction under Ley 38/1999 de Ordenación de la Edificación (LOE). The cover is a 10-year structural warranty running from the date of acta de recepción (final acceptance certificate). Without it, the building cannot be registered in the Property Registry and the title deed (escritura pública de obra nueva) cannot be executed.

The three-tier LOE warranty system

Article 17 of the LOE sets three tiers of mandatory builder warranty:

  • 1 year — finishes and minor defects (paint, tiles, doors)
  • 3 years — habitability defects (insulation, ventilation, non-structural water-tightness)
  • 10 years — structural defects in load-bearing parts (foundations, columns, beams, slabs, walls)

Only the 10-year structural cover needs insurance under the LOE. The shorter warranties are direct builder duties, but RC obras insurance (see below) covers them in practice.

Self-builders (autopromotor)

Article 19.1 LOE makes Decenal mandatory not just for property developers but also for autopromotores — individuals building or commissioning a single home for their own use. There is one limited exception for self-build of one's own home with subsequent sale, but this is narrowly construed.

Self-builders typically pay €2,500–€4,000 for a single dwelling versus €8,000+ for developers building multiple units. The Organismo de Control Técnico (OCT) inspection — required by all decenal insurers — adds €1,500–€3,000 to the project but identifies issues during construction rather than after.

Related cover: RC obras and RC promotor

RC obras (Responsabilidad Civil de Obra) is site-liability insurance. It covers third-party claims during construction, such as an injured passer-by or damage to a neighbour's property. Many municipalities make it a condition of the building licence. RC promotor is the developer's civil liability for the 1- and 3-year warranties under the LOE that aren't covered by Decenal. Many municipalities also require an aval bancario or seguro de afianzamiento for off-plan sales — see our bond and aval insurance page.

Standard exclusions

Decenal covers structural defects (vicios o defectos) that affect resistance, stability or mechanical strength. It does not cover:

  • Aesthetic damage — cracks that do not affect the structure
  • Defects from work done by later owners
  • Damage from extraordinary natural events — covered by the Consorcio
  • Damage from owner negligence — failure to maintain the building
  • Any damage where the OCT was stopped from inspecting during construction

Always keep the OCT certificate. Buyers' lawyers ask for it when the property is sold.

Constructor's Liability Insurance in Spain

Constructor's liability insurance Spain (Seguro de Responsabilidad Civil de Constructor) is essential for anyone carrying out building work in Spain. Under the Ley de Ordenación de la Edificación (LOE), everyone involved in the build is liable for structural defects. That liability runs for up to 10 years after the work is finished.

Who Needs Constructor's Liability?

  • Building contractors and main contractors (constructores)
  • Subcontractors and specialist trade contractors
  • Property developers (promotores) — required by Spanish law
  • Self-builders (autopromotor) carrying out their own construction
  • Architects and technical architects (aparejadores)
  • Renovation contractors — kitchens, bathrooms, extensions, pools

What Constructor's Liability Insurance Covers

All Risk Works Cover (Todo Riesgo de Construcción)

We can also arrange All Risk cover for the works themselves. It protects the building under construction against fire, storm, flood, collapse, theft of materials and malicious damage. The bank financing the build often insists on it.

Optional Extras

Spanish legal requirement: Property developers (promotores) are legally required to hold Decennial Insurance (Seguro Decenal) for new residential buildings under the LOE.

How to Get a Quote

We make getting a quote simple and fast.

  1. Call or email us — ring 966 461 625 or email info@turnerinsurance.es. Our English-speaking team is available Monday to Friday, 09:30–15:00 (09:30–14:00 in July and August).
  2. Tell us your situation. We will ask a few quick questions. What do you need to cover? Your age, your location, and any policies you already hold.
  3. We compare options — as authorised Generali agents, we present the plans that match your needs and budget. No pressure, no obligation.
  4. Your policy is set up — once you are happy, we arrange everything and send your certificate and English-language policy documents promptly.

Constructor Liability Insurance Products

Cover level What is included Best for
Seguro Decenal (10-Year) Structural defect liability for 10 years — mandatory for promotors under the LOE Property developers and promotors
RC Constructor / Obras Builder civil liability during construction — third-party injury and damage Building contractors and self-builders
RC Promotor Developer liability from design to handover — covers architects and project managers Promotors managing the full build
Todo Riesgo Construcción All-risks cover for materials, plant and works-in-progress during the build Major construction projects and new builds

📰 You might also be interested in

🏠 Home Insurance 🔨 Tradesman & Builder 📋 Professional Indemnity 💼 Autónomo Package ❤️ Life Insurance 📰 Read our blog 📞 Get a quote

Approximate Constructor & Builder Insurance Pricing

Annual liability premiums for trades and developers, plus one-off Decenal premiums:

Small trade (sole tradesman)
from €600/yr
  • RC up to €600,000
  • Tools & equipment cover
  • Spain coverage
  • Defensa Jurídica
  • Seguro Decenal pricing on application
Most Popular
Mid-size builder
from €1,800/yr
  • RC up to €1.5m
  • Subcontractors covered
  • Higher tool limits
  • RC obras (works in progress)
  • Multiple project capacity
Promotor / developer
Bespoke
  • RC promotor
  • RC obras for projects
  • Multi-project Decenal
  • Worker protection
  • Bond aval available

Prices shown are typical Spanish market starting points and depend on age, area, cover level and your individual circumstances. Contact us for a free personalised quote. Seguro Decenal premium typically 0.4-1.2% of construction value, paid once at building completion. Mandatory for new residential builds under LOE.

Frequently Asked Questions. Constructor & Builder Liability Insurance

These are the most common questions we receive.

Spanish construction has multiple layers of compulsory insurance under the Ley de Ordenación de la Edificación (LOE). Builders, developers and self-builders need to understand each. Here are the questions we are asked most often.

Seguro Decenal is a 10-year structural warranty insurance required by Spanish law (LOE, Ley 38/1999) for all new residential buildings. It covers structural defects affecting the stability and habitability of the building for 10 years from completion. It is mandatory before the building licence (licencia de primera ocupación) is issued. Self-builders (autopromotor) building their own home are also subject — though some self-build exemptions exist.
Premium is typically 0.4-1.2% of total construction value, paid as a single premium at building completion (when the OCT. Organismo de Control Técnico — has approved the structure). For a €300,000 villa build, expect €1,500-€3,500 Decenal premium. The OCT inspection itself is a separate cost (€2,000-€5,000) but is essential and required by Spanish law.
RC Obras is liability cover for the works in progress — covers third-party damage caused during construction (worker injury to neighbours, dust damage to adjacent buildings, accidental damage from machinery). It runs throughout the build period and finishes when the project completes. RC Obras is part of standard contractor liability cover, not Decenal which is post-completion.
Required by most municipality building permits before licencia de obras is granted. The town hall checks for valid RC during the construction period. Premium is typically 1-3% of construction value, depending on the build type and risk. Larger and more complex projects (high-rise, industrial) attract higher rates.
RC Promotor (developer civil liability) covers a property developer's exposure as the legal client of construction works. Different from RC Obras (which covers the contractor doing the building). RC Promotor includes pre-sale customer claims, defects emerging during/after construction, and contractual disputes with buyers. Standard for multi-unit developments and recommended for self-promoters of single villas.
Some main contractor RC includes vicarious liability for subcontractors, meaning if a subcontractor is sued and unable to pay, your insurance covers it. More commonly, subcontractors should hold their own RC liability — the main contractor's policy is the safety net only. We help contractors verify their subcontractors' insurance at hire stage.
OCT (Organismo de Control Técnico) is an independent technical control body that inspects the building during construction to validate structural compliance. The OCT report is required for Seguro Decenal issue. The OCT visits at key construction phases (foundations, structural completion, final). Without a satisfactory OCT report, no Decenal can be issued and no licencia de primera ocupación will be granted.
Personal-use homes that won't be sold are sometimes exempt — but Decenal is still required if the property might be sold within 10 years of completion. The exemption is challenged by recent Supreme Court rulings. Most legal advisors now recommend Decenal for all autopromotor builds for protection against future sale complications.
Tool theft from sites is a major issue for trades — often the largest claim category. Tool cover under contractor policies typically €1,500-€10,000 with conditions: locked van/site box, security at site, registered serial numbers for high-value items. Site-based machinery (excavators, generators, scaffolding) can be specifically covered with higher sums. We arrange specific tool/equipment cover for trades.
Yes. Spanish construction workers are covered by the Convenio General de la Construcción (the construction sector collective agreement) which requires accident-at-work cover from each employer. This is on top of standard Spanish social security accident scheme. Premium is typically €40-€100 per worker per year. Site safety plans (Plan de Seguridad y Salud) are also legally mandatory under construction law.
These are Spanish construction warranty laws setting three time bands for builder responsibility: Anual (1 year) for finishing defects, Trienal (3 years) for habitability defects, and Decenal (10 years) for structural defects. Decenal is the most expensive and only covers structural failure.
Yes, in some circumstances. Spanish construction law allows personal action against directors, project managers and OCT inspectors in cases of serious negligence or fraud. This is why directors of construction companies should hold Directors and Officers (D&O) liability cover alongside the company's RC. Run-off cover for past projects is also important when a construction company is wound up.
Decenal claims are typically handled by the insurer's specialist construction defect team — they investigate, instruct experts, and either settle or defend on your behalf. RC Obras claims are similarly handled. As the insured contractor or developer, you cooperate with the investigation but the insurer manages the legal process. We act as your interface throughout.
Yes — under Spanish law, claims must be notified within 7 days of the contractor or developer becoming aware of the issue. Late notification is a frequent reason for claim decline. The clock starts when the issue is reported to you, not when you decide whether to engage with it. Always notify and let the insurer assess, even for issues you think will resolve themselves.
Not for self-employment — if you want to work as a self-employed tradesperson in Spain you need Spanish qualifications. If you are seeking employment with an established firm, that is a different matter. Your UK qualifications may or may not transfer — check with the relevant Spanish trade association. Insurance requires you to be legally entitled to perform the work. Cover for unauthorised installations may be void.

More questions? Contact us for free English-speaking advice — or call 966 461 625.

Setting up a home in Spain? Our guide to insurance in Spain for expats puts this cover in context alongside everything else you will need as a resident or second-home owner. The Spanish insurance glossary translates the Spanish policy wording you will meet.

How This Compares to the Competition

Honest comparisons help you make an informed choice. These figures are typical Spanish-market starting points and depend on age, area, cover level and individual circumstances.

Generali Decenal vs Mapfre Decenal and Asefa

How Generali's 10-year structural warranty (Seguro Decenal under Ley 38/1999 LOE) compares to Mapfre and Asefa, the specialist.

Feature Generali Decenal Mapfre Decenal Asefa Decenal
Mandatory under LOE Yes — meets requirement Yes — meets requirement Yes — meets requirement
Cover period 10 years from final certificate 10 years from final certificate 10 years from final certificate
OCT (technical control) Required — we coordinate Required — we coordinate Required — included
Self-builder (autopromotor) accepted Yes — single dwelling Yes — single dwelling Yes — specialism
RC obras (site liability) bolt-on Yes Yes Yes
RC promotor (developer) bolt-on Yes Yes Yes
Premium €350k single-dwelling self-build ~€2,800/build ~€3,200/build ~€3,000/build

Comparisons are based on publicly available product literature and our experience placing policies across the Spanish market. Premium estimates assume a healthy applicant on the Costa Blanca with no significant claims history. Contact us for a personalised, like-for-like quote.

Sources & References

This page references the following official Spanish regulatory and legal sources. These are the authoritative bodies and laws governing insurance products in Spain:

Protect Your Construction Project

AUTHORISED GENERALI AGENTS · CONSTRUCTION SPECIALISTS · FREE ADVICE

Read our Google reviews
Get a Free Quote →📞 966 461 625Get a Quote