Why seismic building codes matter in PACA

The Provence-Alpes-Côte d’Azur region, and in particular the Alpes-Maritimes (06) and the Var (83), is classified as a moderate seismic zone (zone 4) under the French national seismic hazard map. This classification imposes strict construction rules to protect lives and limit material damage. In August 2026, the new seismic codes (Eurocode 8 and its national annex NF EN 1998) came into force with tightened requirements, particularly for new buildings and major renovation works.

Major changes in the 2026 codes

The 2026 seismic codes introduce several changes compared with previous versions:

• Stricter requirements for existing buildings: when structural alterations are carried out, partial seismic retrofitting is now mandatory.
• New soil classes: better accounting for clay soils and backfill, which are common in coastal areas such as Antibes, Cannes or Toulon.
• Tighter material controls: high-performance concrete and ductile steel are now favoured.
• Requirements for non-structural elements: partitions, suspended ceilings and fixtures must be secured to withstand tremors.

Impact for owners and developers in the Alpes-Maritimes and the Var

Whether you’re building a villa in Grasse or an apartment building in Nice, these codes directly affect your projects. Preliminary geotechnical surveys have become more thorough, and construction costs can rise by 5 to 10% depending on site complexity. Even so, this investment is essential to guarantee occupant safety and protect the long-term value of your property.

For co-ownerships located in at-risk zones, a seismic diagnostic may be required before a sale or a rental. Notaries and estate agents need to stay alert on this point.

The role of the building expert and surveyor

As a building expert and topographical surveyor, I get involved at every stage:

• Soil survey: analysing bearing capacity and ground conditions to adapt the foundations.
• Seismic design review: checking plans and structural calculations.
• Site supervision: monitoring the implementation of seismic provisions.
• Post-earthquake diagnostics: assessing damage and recommending repairs.

My expertise covers the whole of the Alpes-Maritimes (06) and the Var (83), from the coast to the mountain areas, where landslide risk adds to the seismic hazard.

Real-world examples

Take the case of a villa on a sloped plot in Antibes: the foundations need to be specifically sized to withstand horizontal forces. Likewise, for a high-end apartment building in Cannes, seismic joints between adjacent structures are mandatory. In Toulon, renovating an older building often requires adding vertical and horizontal tie beams.

Conclusion: plan ahead to build for the long term

The 2026 seismic codes in PACA are not a mere administrative formality: they are the result of lessons learned and technical progress. As an owner or professional, you need competent experts by your side to avoid cost overruns and legal risk. Cassini Expertise supports you at every step, from the initial diagnostic through to project handover.

Call us on 04 22 46 06 04 for a free quote. We work throughout the 06 and 83 departments, from Nice to Toulon, including Grasse, Antibes and Cannes. Let’s build safe, resilient buildings together.

📅 Updated on 24/07/2026 — By Cassini Expertise, independent building expert for the 06 & 83. Free quote: 04 22 46 06 04.

Frequently asked questions

What are the new seismic building codes in PACA for 2026?

The 2026 seismic codes in PACA tighten requirements for seismic zones 3 and 4, particularly in the Var (83) and the Alpes-Maritimes (06). They impose stricter criteria on foundations, tie beams, and the use of ductile materials. New builds must comply with Eurocode 8 using updated behaviour coefficients.

How do you build to seismic standards in the Var (83) under the 2026 rules?

In the Var (83), the 2026 rules require a mandatory soil survey for any construction project. Seismic joints between buildings, continuous foundations, and reinforced-concrete or tied masonry walls are all required. Roofs must be lightweight and securely fixed. A seismic technical inspection is mandatory for category III and IV buildings.

What are the differences between the 2026 and 2011 seismic codes in PACA?

The 2026 codes are stricter than those from 2011: the design acceleration has increased by 10% in certain zones, serviceability limit-state checks have been reinforced, and new provisions apply to timber and steel structures. In addition, accounting for soil-structure interaction is now mandatory for buildings taller than 28 metres in the 06 and 83 zones.

Regulatory seismic zoning in the Alpes-Maritimes and Var

The Alpes-Maritimes (06) and Var (83) departments face a genuine seismic risk, codified by the decree of 22 October 2010 (arrêté du 22 octobre 2010) on the classification and seismic building rules applicable to « normal risk » buildings. This text, in force since 1 May 2011, transposes into French law the provisions of Eurocode 8 (standard NF EN 1998), the European standard for the design and sizing of structures for earthquake resistance.

French regulatory zoning distinguishes five seismic zones, numbered from 1 (very low) to 5 (high). In south-eastern France, most municipalities in the Alpes-Maritimes fall under seismic zone 4 (moderate-to-high), including Antibes, Cannes, Grasse, Nice, Vence, Menton, and the inland communes. Only a few municipalities on the western coast of the department (Théoule-sur-Mer, Mandelieu-La Napoule) fall under zone 3 (moderate).

In the Var, the picture is more mixed: Toulon, Hyères, La Seyne-sur-Mer, Draguignan, Fréjus and Saint-Raphaël are in zone 3 (moderate), while some inland Var municipalities (Verdon valley, northern part of the department) are classified in zone 2 (low). This classification imposes different construction rules depending on the zone and the building’s importance category.

Regulatory obligations for new construction

The decree of 22 October 2010 defines four importance categories for normal-risk buildings:

• Category I: buildings with no human activity requiring long-term occupancy (unoccupied agricultural sheds, automated warehouses).
• Category II: individual dwellings, establishments open to the public (ERP) of category 4 and 5 with limited capacity.
• Category III: ERP of categories 1 to 3, high-rise buildings (IGH), healthcare and social care facilities, schools, collective energy production centres.
• Category IV: buildings essential to civil safety, defence or public order (fire stations, hospitals with operating theatres, crisis management centres).

In seismic zone 4, all new construction in categories II, III and IV must comply with the Eurocode 8 seismic rules, applying an importance coefficient of at least 1.2 for categories III and IV. In zone 3, the requirements apply to categories II to IV, with an adjusted importance coefficient.

The construction rules include in particular:

• Carrying out a preliminary geotechnical study (G2 AVP then G2 PRO) to determine the soil class under Eurocode 8 (soil classes A to E, based on stiffness and depth).
• Sizing the structure (foundations, walls, floors, roof framing) to withstand a reference horizontal acceleration, dependent on the seismic zone and soil type.
• Installing horizontal and vertical tie-beams (chaînages) to ensure the mechanical continuity of the structure (articles R. 563-1 et seq. of the French Environmental Code).
• Effective bracing in two orthogonal directions, with limits on cantilevers and irregularities in plan or elevation.
• Anchoring and tying non-structural elements (partitions, false ceilings, heavy equipment) to prevent them falling during an earthquake.

The project owner must attach to the building permit application a certificate confirming that the seismic rules have been taken into account, issued by an approved technical inspector or the project architect. On completion of the works, a second certificate confirms that the works comply (article R. 563-5 of the Environmental Code).

Works on existing buildings: obligations and proportionality

The decree of 22 October 2010 also sets obligations for major works on existing buildings, where such works substantially alter the structure or use of the building. This covers:

• Extension works (added storeys, raising, enlargement) representing more than 30% of the original floor area.
• Changes of use that place the building in a higher importance category (for example, converting a warehouse into an ERP).
• Major restructuring works affecting overall stability (demolition of load-bearing walls, modification of the bracing system).

In these cases, bringing the building up to seismic code must be proportionate: it cannot be required beyond a cost representing 25% of the total cost of the works (excluding land). This proportionality is assessed case by case and is often a source of disputes between project owners, project managers and planning authorities.

In practice, the structural engineering firm must carry out a seismic diagnosis of the existing building (vulnerability assessment, identification of weak points: missing tie-beams, floors not bonded to walls, unreinforced masonry), then propose targeted reinforcement (tie rods, additional post-and-beam columns, resin injection, carbon-fibre fabric applied to walls).

Expert assessment of defects linked to seismic building rules: liability and remedies

Failure to comply with seismic building rules can trigger the builder’s contractual liability (articles 1792 et seq. of the French Civil Code), even in the absence of an actual earthquake. Case law holds that non-compliance with building standards constitutes a defect of conformity triggering the ten-year statutory warranty (article 1792 of the Civil Code) if it affects the structural soundness of the building or renders it unfit for its purpose.

A notable precedent: Cass. 3e civ., 9 November 2011, No. 10-23.672, in which the Cour de cassation upheld the conviction of a project manager and a contractor for the absence of horizontal and vertical tie-beams on a single-family home in seismic zone 3. The building-damage insurer had compensated the project owner, then exercised its subrogation claim. The Aix-en-Provence Court of Appeal had held the builders jointly and severally liable, a ruling upheld by the Cour de cassation.

Judicial or amicable expert assessment then covers several points:

• Verifying the seismic classification of the municipality (seismic zone) and the building’s importance category at the time the building permit was issued (the classification may have changed between the old zoning system, repealed in 2011, and the current zoning).
• Examining the execution drawings (reinforcement plans, calculation notes) to check the presence and sizing of tie-beams, foundation anchors and stiffeners.
• Destructive testing (core sampling, opening up wall linings) to verify on site the actual construction details (presence or absence of anchor bars, continuity of tie-beams).
• Costing the remedial works required for compliance, with a feasibility analysis (some reinforcement work may require underpinning or temporary relocation).

Cassini Expertise regularly acts as judicial or amicable expert in this type of dispute, before the Judicial Courts of Grasse (covering Antibes, Cannes, Grasse, Vallauris), Nice (covering Nice, Menton, Cagnes-sur-Mer) and Toulon (covering Toulon, Hyères, La Seyne-sur-Mer). These cases result in detailed written reports, including photographic surveys, regulatory analysis, and an adversarial costing of remedial works.

Local geology in south-eastern France and site effects

Beyond regulatory zoning, local geology plays a decisive role in amplifying seismic waves. Eurocode 8 distinguishes five soil classes (A to E), based on stiffness:

• Class A: rock or very stiff geological formations (shear wave velocity > 800 m/s).
• Class B: soft rock or very compact formations (velocity 360 to 800 m/s).
• Class C: firm to dense soils (velocity 180 to 360 m/s), common in coastal alluvial plains.
• Class D: loose to soft soils (velocity < 180 m/s), found in some fill areas or recent deposits.
• Class E: special soils (soft clays, silt, peat), requiring a specific study.

In the Alpes-Maritimes, coastal municipalities (Antibes, Cannes, Nice) often have thick alluvial deposits (Var river gravel, Siagne alluvium) over a deep rock substrate, corresponding to classes C or D. These soils amplify seismic ground motion through resonance effects, increasing the acceleration that must be factored into calculations.

Inland municipalities (Grasse, Vence, Coursegoule) sit on limestone or marl-limestone formations (classes A or B), more favourable from a seismic standpoint, but sometimes affected by slope-related phenomena (landslide risk during an earthquake, described in Eurocode 8 Part 5, NF EN 1998-5).

The G2 geotechnical study must therefore identify the soil class and, where relevant, assess the risk of liquefaction (a water-saturated soil turning « liquid » under shaking), particularly in port areas or coastal plains.

Cassini Expertise’s methodology for seismic compliance cases

On a seismic non-compliance case, Cassini Expertise follows a three-phase approach:

1. Preliminary document review: examination of the building permit file (design statement, architect’s drawings, structural drawings), seismic compliance certificates (or their absence), G2 soil reports, technical specifications (CCTP) and works contracts. Verification of the municipality’s seismic classification at the date the permit was issued (old or new zoning) and the building’s importance category.
2. Site visit and investigation: visual inspection of the structure (identifying load-bearing walls, columns, beams, floors), dimensional surveys, targeted testing (wall core sampling, opening up linings to access tie-beams). Checking for the presence and sizing of anchor bars at the base of walls, horizontal tie-beams at the top of walls and at each floor level, and bracing elements (reinforced concrete shear walls, triangulated bracing). Annotated photographs and location plans.
3. Report drafting and costing: summary of findings, characterisation of the defects with reference to the decree of 22 October 2010 and Eurocode 8, identification of liability (project manager, engineering firm, contractor), costing of the remedial works (detailed quote by trade, with quantities and unit rates). The report specifies the applicable warranty regime (ten-year statutory warranty under article 1792, contractual liability under article 1231-1, proven fault) and the available remedies.

Cassini Expertise operates across the entire Alpes-Maritimes area (Antibes, Cannes, Grasse, Nice, Menton, Vence, Cagnes-sur-Mer, Mougins, Vallauris) and the Var (Toulon, Hyères, Fréjus, Draguignan, Saint-Raphaël, La Seyne-sur-Mer). The firm can be engaged for amicable expert assessment (instructed by a project owner or insurer), adversarial expert assessment (as part of a pre-litigation settlement), or judicial expert assessment (appointed by the Judicial Court of Grasse, Nice or Toulon, or by the Aix-en-Provence Court of Appeal).

Conclusion

Seismic building rules in PACA rest on a precise regulatory framework (decree of 22 October 2010, Eurocode 8), a differentiated seismic zoning system (zones 2 to 4 depending on the municipality), and obligations proportionate to the building’s importance. Failure to comply exposes builders to ten-year statutory or contractual liability, and can justify costly remedial works. Technical and legal expertise is essential to characterise the failures, assess reinforcement solutions, and secure any remedies.

For any question relating to a seismic building dispute, a compliance check before handover, or a seismic vulnerability assessment, Cassini Expertise is at your disposal at 04 22 46 06 04. The firm operates in the Alpes-Maritimes and the Var, before the courts of Grasse, Nice, Toulon and the Aix-en-Provence Court of Appeal.

Why seismic building codes matter in PACA

The Provence-Alpes-Côte d’Azur region, and in particular the Alpes-Maritimes (06) and the Var (83), is classified as a moderate seismic zone (zone 4) under the French national seismic hazard map. This classification imposes strict construction rules to protect lives and limit material damage. In August 2026, the new seismic codes (Eurocode 8 and its national annex NF EN 1998) came into force with tightened requirements, particularly for new buildings and major renovation works.

Major changes in the 2026 codes

The 2026 seismic codes introduce several changes compared with previous versions:

• Stricter requirements for existing buildings: when structural alterations are carried out, partial seismic retrofitting is now mandatory.
• New soil classes: better accounting for clay soils and backfill, which are common in coastal areas such as Antibes, Cannes or Toulon.
• Tighter material controls: high-performance concrete and ductile steel are now favoured.
• Requirements for non-structural elements: partitions, suspended ceilings and fixtures must be secured to withstand tremors.

Impact for owners and developers in the Alpes-Maritimes and the Var

Whether you’re building a villa in Grasse or an apartment building in Nice, these codes directly affect your projects. Preliminary geotechnical surveys have become more thorough, and construction costs can rise by 5 to 10% depending on site complexity. Even so, this investment is essential to guarantee occupant safety and protect the long-term value of your property.

For co-ownerships located in at-risk zones, a seismic diagnostic may be required before a sale or a rental. Notaries and estate agents need to stay alert on this point.

The role of the building expert and surveyor

As a building expert and topographical surveyor, I get involved at every stage:

• Soil survey: analysing bearing capacity and ground conditions to adapt the foundations.
• Seismic design review: checking plans and structural calculations.
• Site supervision: monitoring the implementation of seismic provisions.
• Post-earthquake diagnostics: assessing damage and recommending repairs.

My expertise covers the whole of the Alpes-Maritimes (06) and the Var (83), from the coast to the mountain areas, where landslide risk adds to the seismic hazard.

Real-world examples

Take the case of a villa on a sloped plot in Antibes: the foundations need to be specifically sized to withstand horizontal forces. Likewise, for a high-end apartment building in Cannes, seismic joints between adjacent structures are mandatory. In Toulon, renovating an older building often requires adding vertical and horizontal tie beams.

Conclusion: plan ahead to build for the long term

The 2026 seismic codes in PACA are not a mere administrative formality: they are the result of lessons learned and technical progress. As an owner or professional, you need competent experts by your side to avoid cost overruns and legal risk. Cassini Expertise supports you at every step, from the initial diagnostic through to project handover.

Call us on 04 22 46 06 04 for a free quote. We work throughout the 06 and 83 departments, from Nice to Toulon, including Grasse, Antibes and Cannes. Let’s build safe, resilient buildings together.

📅 Updated on 24/07/2026 — By Cassini Expertise, independent building expert for the 06 & 83. Free quote: 04 22 46 06 04.

Frequently asked questions

What are the new seismic building codes in PACA for 2026?

The 2026 seismic codes in PACA tighten requirements for seismic zones 3 and 4, particularly in the Var (83) and the Alpes-Maritimes (06). They impose stricter criteria on foundations, tie beams, and the use of ductile materials. New builds must comply with Eurocode 8 using updated behaviour coefficients.

How do you build to seismic standards in the Var (83) under the 2026 rules?

In the Var (83), the 2026 rules require a mandatory soil survey for any construction project. Seismic joints between buildings, continuous foundations, and reinforced-concrete or tied masonry walls are all required. Roofs must be lightweight and securely fixed. A seismic technical inspection is mandatory for category III and IV buildings.

What are the differences between the 2026 and 2011 seismic codes in PACA?

The 2026 codes are stricter than those from 2011: the design acceleration has increased by 10% in certain zones, serviceability limit-state checks have been reinforced, and new provisions apply to timber and steel structures. In addition, accounting for soil-structure interaction is now mandatory for buildings taller than 28 metres in the 06 and 83 zones.

Regulatory seismic zoning in the Alpes-Maritimes and Var

The Alpes-Maritimes (06) and Var (83) departments face a genuine seismic risk, codified by the decree of 22 October 2010 (arrêté du 22 octobre 2010) on the classification and seismic building rules applicable to \ »normal risk\ » buildings. This text, in force since 1 May 2011, transposes into French law the provisions of Eurocode 8 (standard NF EN 1998), the European standard for the design and sizing of structures for earthquake resistance.

French regulatory zoning distinguishes five seismic zones, numbered from 1 (very low) to 5 (high). In south-eastern France, most municipalities in the Alpes-Maritimes fall under seismic zone 4 (moderate-to-high), including Antibes, Cannes, Grasse, Nice, Vence, Menton, and the inland communes. Only a few municipalities on the western coast of the department (Théoule-sur-Mer, Mandelieu-La Napoule) fall under zone 3 (moderate).

In the Var, the picture is more mixed: Toulon, Hyères, La Seyne-sur-Mer, Draguignan, Fréjus and Saint-Raphaël are in zone 3 (moderate), while some inland Var municipalities (Verdon valley, northern part of the department) are classified in zone 2 (low). This classification imposes different construction rules depending on the zone and the building’s importance category.

Regulatory obligations for new construction

The decree of 22 October 2010 defines four importance categories for normal-risk buildings:

• Category I: buildings with no human activity requiring long-term occupancy (unoccupied agricultural sheds, automated warehouses).
• Category II: individual dwellings, establishments open to the public (ERP) of category 4 and 5 with limited capacity.
• Category III: ERP of categories 1 to 3, high-rise buildings (IGH), healthcare and social care facilities, schools, collective energy production centres.
• Category IV: buildings essential to civil safety, defence or public order (fire stations, hospitals with operating theatres, crisis management centres).

In seismic zone 4, all new construction in categories II, III and IV must comply with the Eurocode 8 seismic rules, applying an importance coefficient of at least 1.2 for categories III and IV. In zone 3, the requirements apply to categories II to IV, with an adjusted importance coefficient.

The construction rules include in particular:

• Carrying out a preliminary geotechnical study (G2 AVP then G2 PRO) to determine the soil class under Eurocode 8 (soil classes A to E, based on stiffness and depth).
• Sizing the structure (foundations, walls, floors, roof framing) to withstand a reference horizontal acceleration, dependent on the seismic zone and soil type.
• Installing horizontal and vertical tie-beams (chaînages) to ensure the mechanical continuity of the structure (articles R. 563-1 et seq. of the French Environmental Code).
• Effective bracing in two orthogonal directions, with limits on cantilevers and irregularities in plan or elevation.
• Anchoring and tying non-structural elements (partitions, false ceilings, heavy equipment) to prevent them falling during an earthquake.

The project owner must attach to the building permit application a certificate confirming that the seismic rules have been taken into account, issued by an approved technical inspector or the project architect. On completion of the works, a second certificate confirms that the works comply (article R. 563-5 of the Environmental Code).

Works on existing buildings: obligations and proportionality

The decree of 22 October 2010 also sets obligations for major works on existing buildings, where such works substantially alter the structure or use of the building. This covers:

• Extension works (added storeys, raising, enlargement) representing more than 30% of the original floor area.
• Changes of use that place the building in a higher importance category (for example, converting a warehouse into an ERP).
• Major restructuring works affecting overall stability (demolition of load-bearing walls, modification of the bracing system).

In these cases, bringing the building up to seismic code must be proportionate: it cannot be required beyond a cost representing 25% of the total cost of the works (excluding land). This proportionality is assessed case by case and is often a source of disputes between project owners, project managers and planning authorities.

In practice, the structural engineering firm must carry out a seismic diagnosis of the existing building (vulnerability assessment, identification of weak points: missing tie-beams, floors not bonded to walls, unreinforced masonry), then propose targeted reinforcement (tie rods, additional post-and-beam columns, resin injection, carbon-fibre fabric applied to walls).

Expert assessment of defects linked to seismic building rules: liability and remedies

Failure to comply with seismic building rules can trigger the builder’s contractual liability (articles 1792 et seq. of the French Civil Code), even in the absence of an actual earthquake. Case law holds that non-compliance with building standards constitutes a defect of conformity triggering the ten-year statutory warranty (article 1792 of the Civil Code) if it affects the structural soundness of the building or renders it unfit for its purpose.

A notable precedent: Cass. 3e civ., 9 November 2011, No. 10-23.672, in which the Cour de cassation upheld the conviction of a project manager and a contractor for the absence of horizontal and vertical tie-beams on a single-family home in seismic zone 3. The building-damage insurer had compensated the project owner, then exercised its subrogation claim. The Aix-en-Provence Court of Appeal had held the builders jointly and severally liable, a ruling upheld by the Cour de cassation.

Judicial or amicable expert assessment then covers several points:

• Verifying the seismic classification of the municipality (seismic zone) and the building’s importance category at the time the building permit was issued (the classification may have changed between the old zoning system, repealed in 2011, and the current zoning).
• Examining the execution drawings (reinforcement plans, calculation notes) to check the presence and sizing of tie-beams, foundation anchors and stiffeners.
• Destructive testing (core sampling, opening up wall linings) to verify on site the actual construction details (presence or absence of anchor bars, continuity of tie-beams).
• Costing the remedial works required for compliance, with a feasibility analysis (some reinforcement work may require underpinning or temporary relocation).

Cassini Expertise regularly acts as judicial or amicable expert in this type of dispute, before the Judicial Courts of Grasse (covering Antibes, Cannes, Grasse, Vallauris), Nice (covering Nice, Menton, Cagnes-sur-Mer) and Toulon (covering Toulon, Hyères, La Seyne-sur-Mer). These cases result in detailed written reports, including photographic surveys, regulatory analysis, and an adversarial costing of remedial works.

Local geology in south-eastern France and site effects

Beyond regulatory zoning, local geology plays a decisive role in amplifying seismic waves. Eurocode 8 distinguishes five soil classes (A to E), based on stiffness:

• Class A: rock or very stiff geological formations (shear wave velocity > 800 m/s).
• Class B: soft rock or very compact formations (velocity 360 to 800 m/s).
• Class C: firm to dense soils (velocity 180 to 360 m/s), common in coastal alluvial plains.
• Class D: loose to soft soils (velocity < 180 m/s), found in some fill areas or recent deposits.
• Class E: special soils (soft clays, silt, peat), requiring a specific study.

In the Alpes-Maritimes, coastal municipalities (Antibes, Cannes, Nice) often have thick alluvial deposits (Var river gravel, Siagne alluvium) over a deep rock substrate, corresponding to classes C or D. These soils amplify seismic ground motion through resonance effects, increasing the acceleration that must be factored into calculations.

Inland municipalities (Grasse, Vence, Coursegoule) sit on limestone or marl-limestone formations (classes A or B), more favourable from a seismic standpoint, but sometimes affected by slope-related phenomena (landslide risk during an earthquake, described in Eurocode 8 Part 5, NF EN 1998-5).

The G2 geotechnical study must therefore identify the soil class and, where relevant, assess the risk of liquefaction (a water-saturated soil turning \ »liquid\ » under shaking), particularly in port areas or coastal plains.

Cassini Expertise’s methodology for seismic compliance cases

On a seismic non-compliance case, Cassini Expertise follows a three-phase approach:

1. Preliminary document review: examination of the building permit file (design statement, architect’s drawings, structural drawings), seismic compliance certificates (or their absence), G2 soil reports, technical specifications (CCTP) and works contracts. Verification of the municipality’s seismic classification at the date the permit was issued (old or new zoning) and the building’s importance category.
2. Site visit and investigation: visual inspection of the structure (identifying load-bearing walls, columns, beams, floors), dimensional surveys, targeted testing (wall core sampling, opening up linings to access tie-beams). Checking for the presence and sizing of anchor bars at the base of walls, horizontal tie-beams at the top of walls and at each floor level, and bracing elements (reinforced concrete shear walls, triangulated bracing). Annotated photographs and location plans.
3. Report drafting and costing: summary of findings, characterisation of the defects with reference to the decree of 22 October 2010 and Eurocode 8, identification of liability (project manager, engineering firm, contractor), costing of the remedial works (detailed quote by trade, with quantities and unit rates). The report specifies the applicable warranty regime (ten-year statutory warranty under article 1792, contractual liability under article 1231-1, proven fault) and the available remedies.

Cassini Expertise operates across the entire Alpes-Maritimes area (Antibes, Cannes, Grasse, Nice, Menton, Vence, Cagnes-sur-Mer, Mougins, Vallauris) and the Var (Toulon, Hyères, Fréjus, Draguignan, Saint-Raphaël, La Seyne-sur-Mer). The firm can be engaged for amicable expert assessment (instructed by a project owner or insurer), adversarial expert assessment (as part of a pre-litigation settlement), or judicial expert assessment (appointed by the Judicial Court of Grasse, Nice or Toulon, or by the Aix-en-Provence Court of Appeal).

Conclusion

Seismic building rules in PACA rest on a precise regulatory framework (decree of 22 October 2010, Eurocode 8), a differentiated seismic zoning system (zones 2 to 4 depending on the municipality), and obligations proportionate to the building’s importance. Failure to comply exposes builders to ten-year statutory or contractual liability, and can justify costly remedial works. Technical and legal expertise is essential to characterise the failures, assess reinforcement solutions, and secure any remedies.

For any question relating to a seismic building dispute, a compliance check before handover, or a seismic vulnerability assessment, Cassini Expertise is at your disposal at 04 22 46 06 04. The firm operates in the Alpes-Maritimes and the Var, before the courts of Grasse, Nice, Toulon and the Aix-en-Provence Court of Appeal.