Office accessibility for people with reduced mobility: compliance and inclusive fit-out
Regulatory framework for reduced mobility: 3 pivotal texts and ERP thresholds
45,000 EUR for the project owner, 225,000 EUR for the legal entity: accessibility for people with reduced mobility is not a CSR topic, it is a personal criminal risk (Construction Code, articles L165-1 and L165-2). The decree of 8 December 2014 and the NF P98-351 standard set the framework: circulation spaces >= 1.40 m, doors >= 0.90 m, thresholds
Three texts structure the accessibility obligation in French tertiary offices.
- ERT governed by the Labour Code, recodified Decree 92.332 and the amended decree of 5 August 1992 (Site Sécurité): applicable from the first employee, requiring circulation spaces >= 1.40 m, doors >= 0.90 m, adapted sanitary facilities and accessible workstations.
- Decree of 8 December 2014: governs existing tertiary ERPs across 32 technical points (thresholds <= 2 cm, slopes <= 5%, contrasting signage, turning space of 1.50 m diameter).
- Decree of 20 April 2017: specifies the rules for existing ERPs and the Ad’AP programme.
An office receiving clients, visitors or candidates becomes a 5th-category ERP: a public accessibility register is mandatory, along with a prefectural certificate and an adapted evacuation plan. The threshold of 19 simultaneous people moves the establishment into the 4th category, with reduced-mobility sanitary facilities at a rate of at least 1 unit per accessible level.
Kytom’s position, contrary to common practice: ERP status is triggered far earlier than most legal departments believe. Across the tertiary reduced-mobility projects audited since 2022, several floor plates described by their occupants as « offices closed to the public » were in fact receiving candidates, service providers and external auditors: they therefore qualified as 5th-category ERPs without knowing it. The prevailing belief in the profession underestimates this shift because it equates ERP with commercial reception. Our reading: as soon as an external non-employee crosses the threshold on a recurring basis, the accessibility register is mandatory, full stop.
The HR stake compounds the legal one: the OETH requires 6% of disabled workers in companies of 20 employees or more, with an Agefiph contribution of 4,000 EUR to 6,000 EUR per missing position depending on size. The proportion of invisible disabilities reaches 80% and broadens the target of fit-out measures beyond wheelchairs: acoustic comfort, signage, lighting, sit-stand workstations.
For the legal department: turning a criminal obligation into a controlled trade-off
The reduced-mobility topic most often lands on the legal department’s desk in the form of a late warning: an imminent CCDSA inspection, a refused prefectural certificate, a letter from the labour inspectorate. At this stage, the legal and financial cost is already committed.
Quantifying the risk for the legal director. Addressing accessibility from the design stage is significantly cheaper than a post-delivery rework: isolated points to correct after handover require heavy interventions (dismantling, missing provisions, finishing trade reworks) whose unit cost far exceeds that of integration during the design phase. Articles L165-1 and L165-2 of the Construction Code provide for criminal fines of up to 45,000 EUR for the project owner as a natural person and 225,000 EUR for the legal entity, on top of the formal notice from the labour inspectorate (article R4214-26), civil liability (Civil Code, articles 1240 and 1242) and the increased Agefiph contribution for companies subject to the OETH (2024 scale).
The Kytom method is structured around four milestones calibrated over 12 weeks:
1. Regulatory diagnostic (10 days): audit of the 32 key points of the decree of 8 December 2014. Non-compliances are ranked by criticality (blocking, major, minor) and by rework cost.
2. Inclusive design (3 weeks): BIM modelling of circulation spaces, adapted workstations (adjustable height 65 to 85 cm, 80 cm lateral clearance) and turning zones of 1.50 m diameter. Reduced-mobility requirements are cross-referenced with environmental certification standards when the project targets a label.
3. Execution: management of the trades with a dedicated accessibility lead, inspections at 30%, 70% and 100% progress by an independent inspection body (Apave, Bureau Veritas).
4. Final certification: production of the accessibility register, prefectural certificate, training of facilities teams over 2 half-days.
| Milestone | Duration | Deliverable |
|---|---|---|
| Diagnostic | 10 days | NF P98-351 report |
| Design | 3 weeks | DCE + BIM plans |
| Works | 7 weeks | Handover report |
| Compliance | 1 week | Prefectural certificate |
A complementary international standard is mobilised for multi-site groups in France and Spain in order to harmonise accessibility requirements beyond the French regulatory framework.
When this 12-week method is not the right one. For floor plates under 200 m² with fewer than 5 employees, deploying a dedicated accessibility lead and three inspection-body milestones is disproportionate: an internal audit cross-referenced with the decree of 8 December 2014 is sufficient, as the structural cost generally exceeds the potential rework cost. Likewise, for a site already compliant post-2015 and not structurally modified, the full diagnostic should be replaced by a check of the existing accessibility register.
Measured benefits: legal, HR and budgetary
Feedback from comparable floor plates delivered under design and build reveals three concrete benefits.
Legal compliance: integrating accessibility from the design stage allows the prefectural certificate to be obtained on the first submission, avoiding costly back-and-forth in the administrative phase.
HR performance: an ambitious reduced-mobility approach supports the integration of employees with disabilities and can reduce the Agefiph contribution thanks to fit-out measures that count towards the OETH.
Budget control: addressing accessibility upstream of design is significantly cheaper than a post-delivery rework, where interventions on isolated points generate substantial structural overruns.
The employee experience improves for all occupants, not just
Method
- Accessibility audit
Have a complete diagnostic carried out by a qualified engineering firm. The report identifies each non-compliance, ranks it and prices the works. Allow 2 weeks. - Ad’AP submission or authorisation
Depending on the scope, submit a Programmed Accessibility Agenda or an ERP works authorisation to the town hall. Anticipate 11 weeks of administrative processing in parallel with the following steps. - Adapted design
Our architect integrates reduced-mobility requirements into the plans: circulation spaces, sanitary facilities, workstations, signage. 3D validation with a wheelchair template and inclusive user testing on 3 to 5 profiles. - Turnkey works
Kytom manages all the trades: demolition, finishing works, reduced-mobility plumbing, electrical work, adapted furniture. Single point of contact, controlled schedule, work possible outside business hours. - Handover and certification
Compliance visit with your accessibility commission, clearing of reservations and issuance of the final accessibility certificate, a mandatory document to keep and submit to the prefect.
