Quick answer: Italian new-build buyers hold three stacked protections, a fideiussione refunding 100% of advances if the developer fails before the deed, a two-year warranty on defects from delivery, and ten years of structural cover under article 1669 backed by the mandatory polizza decennale insurance, verified by the notary since 2019. The protections are strong on paper and procedural in practice: every one of them dies quietly when report windows lapse. This guide maps each guarantee, the claim clocks, the handover inspection that preserves your evidence, and the insolvency scenario, complementing the purchase-side sequence in the off-plan guide.
What protections does Italian law give new-build buyers?
Three layers protect a new-build buyer, each against a different failure: the fideiussione covers 100% of your money before the deed, the 2-year appalto warranty covers defects after delivery, and article 1669 with the polizza decennale covers serious structural failure for 10 years from completion, spanning the purchase from first deposit to a decade of occupancy.
| Layer | Source | Covers | Duration |
|---|---|---|---|
| Fideiussione on advances | D.Lgs 122/2005 art. 2-3 | 100% of payments before the deed, vs insolvency | until deed |
| Defect warranty | c.c. appalto/vendita rules | visible and hidden defects, non-conformity to spec | 2 years from delivery |
| Structural liability | art. 1669 c.c. | grave defects, collapse, unfitness | 10 years from completion |
| Polizza decennale | D.Lgs 122/2005 art. 4 | insures the 1669 risk, notary-verified | 10 years |
The regime’s scope line matters at the start: the 122/2005 protections attach to «immobili da costruire», homes sold before the certificate of completion, by a developer to a private buyer. Completed-stock purchases keep the warranty layers but not the advance-payment guarantee, a distinction the due diligence guide applies when classifying what you are actually buying.
How does the fideiussione on advance payments work?
The fideiussione is an unconditional bank or insurance guarantee, delivered to you no later than the preliminary contract, refunding every advance you have paid, deposit, stage payments, extras invoiced pre-deed, if the developer enters crisis before transferring title; a contract missing it is null at the buyer’s sole initiative, a nullity the buyer can raise at any time.
Verification is a 4-item checklist that takes one afternoon:
- Issuer licence: the guarantor must be a licensed bank or authorised insurer; check the IVASS or Bank of Italy registers, because guarantees from unlicensed «finanziarie» are the sector’s classic fraud.
- Coverage formula: the text must cover sums «paid and to be paid», tracking your payment plan, not a fixed figure the plan will outgrow.
- Enforceability trigger: payable on the developer’s «situazione di crisi» (insolvency filings, foreclosure on the site), without requiring you to win a lawsuit first.
- Escrow of the original: you hold the original document; a photocopied promise is not a guarantee.
Economics explain the checklist’s seriousness: on a €400,000 off-plan purchase with 30% paid across construction, €120,000 of your money sits exposed to a builder’s balance sheet for 18-30 months, and Italian construction insolvencies did not end with the sector’s post-2015 recovery. The guarantee converts that credit risk into an insurer’s promise, but only at the strength of its weakest clause.
Nullity mechanics make the fideiussione unusual among consumer protections: a preliminary signed without the guarantee is null under article 2 of the decree, but relatively, only the buyer can invoke it, which converts the defect into a buyer’s option held for years. Case law has let purchasers raise the nullity even after paying multiple instalments, unwinding the whole contract and reclaiming 100% of the sums paid when a project stalled, and the 2019 corrective extended the toolkit by requiring the guarantee to conform to a ministerial standard model. The market effect is measurable in behaviour: established developers deliver conforming guarantees as routine paperwork, while a builder who «will provide it at the rogito» is describing a contract you can void and, statistically, a project financed on its buyers’ unsecured money.
Insider tip: email the issuing bank or insurer directly, quoting the guarantee’s number, and ask them to confirm in writing that it is live and covers your contract. Fabricated or lapsed fideiussioni surface in Italian case law every year, and issuers answer verification emails within days.
What does the polizza decennale cover, and what not?
The polizza decennale postuma is a 10-year insurance policy the developer delivers at the deed, insuring the article 1669 risks, collapse, grave defects in load-bearing elements, unfitness for purpose, soil failures included, with 100% of reconstruction-grade cover as the statutory design. Since the 2019 reform the notary cannot close without verifying it, and a missing policy lets the buyer refuse the rogito.
Coverage reads narrower than buyers assume, and the boundary line decides claims:
| Inside the decennale | Outside it (other remedies apply) |
|---|---|
| Structural collapse, full or partial | paint, plaster, finishes |
| Grave defects: foundations, frames, load-bearing walls | doors, windows, fittings alignment |
| Waterproofing failures compromising habitability | condensation from user ventilation habits |
| Soil settlement damage | boundary and landscaping works |
| Unfitness for intended use | snags recorded at handover |
Policy quality varies within the legal minimum, so three lines deserve reading before the deed: the deductible per claim (from €0 to five figures), the indemnity basis (reconstruction cost versus capped sums), and exclusions for «known defects», which is where a sloppy handover report can poison later structural claims. The notary’s verification, part of the closing role profiled in the notaio guide, confirms existence and statutory conformity, not commercial generosity.
Verification duties changed hands in 2019, and buyers inherited the benefit: decree 14/2019 rewrote article 4 so that the notary must check the polizza decennale’s existence and conformity before the deed for building titles issued from 16 March 2019, ending the era when the policy was a contractual promise that nobody policed and only 1 buyer in a dispute ever saw enforced. The reform also tied the policy to the standard-model regime and gave the buyer an express right to refuse the rogito, without penalty, where the policy is missing, a refusal that costs the developer the closing while the buyer keeps 100% of the caparra. For stock permitted before the cutoff the old regime lingers, which is why the permit date belongs on every due-diligence checklist for 2019-2021 completions: two flats in the same street can carry different protection architectures for the same crack.
Transferability completes the picture: both the 1669 liability and the decennale run with the building, protecting successive owners within the decade, which makes a documented, claim-free policy a real asset at resale and a standard question from any well-advised buyer of 3-8 year old stock.
Which claim clocks apply, and how do you not miss them?
Claim deadlines are three parallel clocks that Italian courts enforce without sentiment: visible defects follow the 60-day report rule with action within 2 years of delivery; hidden defects report within 60 days of discovery; and structural defects under article 1669 carry 10 years of cover but demand a report within 1 year of discovery and suit within 1 year of the report.
| Defect class | Report deadline | Action deadline | Cover period |
|---|---|---|---|
| Visible at handover | in the verbale, day one | 2 years from delivery | n/a |
| Hidden, non-structural | 60 days from discovery | 2 years from delivery | delivery + 2 years |
| Grave structural (1669) | 1 year from discovery | 1 year from report | 10 years from completion |
Clock discipline compresses to three habits, each trivial in the moment and decisive in retrospect:
- Date every discovery: photographs with timestamps, a one-line PEC to the developer the same week; the report clock runs from discovery, and your email fixes that date.
- Report by PEC, not by phone: Italian certified email is court-grade proof of content and date; phone calls are legally silence.
- Commission the perizia early: a €500-1,500 technical survey converts «worrying crack» into «grave defect under article 1669», and the classification, not the crack, determines which clock and which insurer answers.
The pattern of failed claims is monotonous in the case law: real defects, honest buyers, lapsed windows. Treat the clocks as the substance of your rights, because procedurally, they are.
What should happen at handover (consegna)?
Handover is evidence day: you inspect the finished unit against the capitolato, record every visible defect in the verbale di consegna, and sign nothing clean that is not clean, because visible defects accepted without reservation drop out of the 2-year warranty’s practical reach. A geometra at your side for €300-500 routinely lists 20-60 items on a standard apartment.
The inspection protocol that produces a usable verbale:
- Bring the capitolato and the floor plans: the contract’s specification is the standard; «industry practice» is not.
- Test, do not admire: every tap, window, shutter, socket, drain and door cycle; metering points photographed at zero.
- List without negotiating: the verbale records; remediation deadlines are agreed in writing after, with dates.
- Reserve expressly: a formula reserving rights on hidden defects and on listed items keeps both warranties intact.
- Refuse pressure-signing: a handover scheduled 45 minutes before your flight is a tactic, not a coincidence.
Snag economics justify the pedantry: Italian consumer-association surveys regularly find the majority of new units delivered with defects, most minor, some not, and a documented list at consegna converts them into the developer’s scheduled obligations rather than your renovation budget, which, per the renovation costs guide, prices the same work at retail once the builder’s crews leave site.
Retention leverage belongs in the contract before this day: a final-payment holdback of even 2-5% against snag completion changes remediation speed more than any legal remedy, and developers grant it far more readily at compromesso than at consegna, one more clause for the compromesso checklist.
Three buyer scenarios test the warranty stack differently, and knowing your own profile sharpens which sections matter. The off-plan investor paying 30% across construction lives on the fideiussione and should verify it before each stage payment, not once. The completed-new-build buyer, closing within 24 months of the fine lavori, leans on the decennale and the 2-year warranty, with the verbale di consegna as the whole evidence base. The year-4 resale buyer of nearly-new stock inherits the decennale’s remaining 6 years and should demand the policy document and any claims history with the same insistence as the title deed.
A fourth profile deserves its own caution: buyers of units in part-sold buildings where the developer still owns unsold stock. Their voting weight in the condominium can stall defect claims on common parts for years, so the assembly minutes and the developer’s remaining share belong in due diligence alongside the guarantees themselves.
What happens if the developer goes insolvent?
Insolvency splits cleanly at the deed: before it, the fideiussione refunds 100% of your advances on the crisis trigger, and a 2019-established solidarity fund backstops victims of the pre-2005-regime gaps; after the deed, the building is yours and the decennale plus 1669 survive against the insurer and, formally, the insolvent builder. The catastrophic scenarios cluster where buyers paid outside the guarantee.
The scenario table, with the instrument that answers each:
| Scenario | Your remedy | Recovery reality |
|---|---|---|
| Crisis before deed, guaranteed advances | call the fideiussione | 100% of guaranteed sums, weeks-months |
| Crisis before deed, sums paid «nero» or post-dated | unsecured creditor in the procedure | cents on the euro, years |
| Crisis after deed, structural defect emerges | decennale insurer | policy terms govern; builder irrelevant |
| Unfinished common areas at crisis | procedure negotiations, buyers’ committee | slow, partial, organised buyers fare better |
The middle row is the entire lesson of two decades of Italian construction failures: money paid outside the contract, in cash against the €5,000 cap, against invoices postponed «for VAT timing», or after the guarantee’s coverage formula stopped tracking the payment plan, has no guarantee, no policy and no instrument behind it at all, and the payment traceability rules that make such payments illegal on the way in also make them practically unrecoverable on the way out. Developer selection remains the cheapest insurance of all: track record, balance-sheet depth and delivered-project references, the vetting layer that the foreign buyer hub and the catalogued buyer mistakes both place before any contract is signed, because every remedy in this guide is a consolation prize next to a builder who simply finishes the building.
Frequently Asked Questions
Two are mandatory under legislative decree 122/2005 for homes sold before completion: a bank or insurance fideiussione covering 100% of every advance payment against developer insolvency, delivered no later than the preliminary contract, and a ten-year polizza decennale postuma insuring serious structural defects, delivered at the deed. A missing fideiussione makes the contract voidable by the buyer alone; since 2019 the notary must verify the decennale before the rogito.
Serious structural damage for ten years from completion: total or partial collapse, grave defects in load-bearing elements, and defects making the building unfit for its purpose, including damage from soil defects. It does not cover finishes, fittings, condensation or ordinary snags, those live in the shorter two-year warranty and the delivery report. Read the policy's exclusions and per-claim deductibles before the deed, not after a crack appears.
Three clocks run in parallel: visible defects and non-conformities must be reported within 60 days of discovery under the appalto rules, with action inside 2 years of delivery; serious structural defects fall under article 1669 with 10 years of cover, a 1-year window to report from discovery, and 1 further year to sue. Missing a report window kills otherwise perfect claims.
A bank or insurance guarantee refunding every euro you paid in advance, deposits, stage payments, if the developer becomes insolvent before the deed. It is due at or before the preliminary contract, covering amounts already paid and to be paid; a contract signed without it is null on the buyer's initiative. Check the issuer is a licensed bank or insurer, the classic fraud is a guarantee from an unlicensed vehicle.
You inspect the finished unit against the capitolato specification and record every visible defect in the verbale di consegna. Visible defects accepted without reservation are hard to claim later, the report is your evidence that they were noted on day one. Bring a geometra for the inspection: a €300-500 professional snag list routinely secures remediation worth 10-20 times its cost.
Yes. Article 1669 protection runs with the building, and the polizza decennale covers the property's successive owners for its ten-year term, both pass automatically to your buyer at resale. A valid, claimable decennale is a genuine resale asset for year-3 to year-9 sales, so keep the policy document with the deed, not in a drawer.
Escalate on paper, in this order: written defect notice by PEC within the report windows; a technical survey (perizia) quantifying remediation; formal messa in mora demanding works or payment; then either the decennale insurer for structural items or court, where an accertamento tecnico preventivo freezes evidence fast. Most disputes settle at the perizia stage because the numbers become undeniable.
The fideiussione regime protects advance payments on future completion, so it fades for finished stock bought at the deed. The rest survives: the two-year defect warranty from delivery, article 1669's ten-year structural protection from completion, and the polizza decennale where issued. On recently completed buildings, ask for the decennale and the agibilità as a pair before offering.
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