1. The legal framework
The 2005 equal rights statute establishes the principle of universal accessibility. It distinguishes buildings open to the public, residential blocks, workplaces and public spaces. Each category has its own rules, its own triggers and its own exemption procedure.
Programmed accessibility agendas allow non-compliant public buildings to spread the work over three to nine years under prefectural supervision. A building open to the public that has not filed such an agenda is in breach, and compliance becomes immediately enforceable on any planning application or notice of works.
ℹ The trigger not to overlook: the planning application In refurbishment, the accessibility obligations are triggered when an application for planning consent is made, provided the works affect the circulation routes or the entrances. An owner applying for consent to renovate a façade will not trigger them if the works do not touch the entrances. But add a façade alteration forming a new entrance and the obligations activate. The economist has to identify that trigger at feasibility stage, before the architectural approach is settled.
2. Obligations by type of building
| Type of building | Obligation | Trigger | Exemptions available | Consequence of non-compliance |
|---|---|---|---|---|
| Existing public buildings, larger categories | Full accessibility or a programmed agenda | Significant refurbishment, or the agenda already compulsory | Technical impossibility, manifest disproportion of cost above 10 % of the works budget | Planning consent refused, or non-compliance at completion |
| Small public buildings | Adapted accessibility | Entrance, main circulation and one service | Exemption more readily available, simplified application | Risk of a claim by a tenant or a customer |
| New residential blocks | 100 % visitable | Always | None | Non-compliance with the consent |
| Residential blocks in refurbishment | Adaptable or visitable according to the works | Significant refurbishment, or alteration of the circulation | Yes, on technical justification | Risk on sale or letting |
| Individual houses | Not required except on a block sale | Building for one's own use | ||
| Workplaces | Accessibility of the workstations | Creating or fitting out workstations | Technical justification | Enforcement notice from the labour authority |
The distinction between public buildings and housing is fundamental. Public buildings carry the strictest and most expensive obligations, because they receive the public. Residential blocks have lighter obligations in refurbishment, with more readily available exemptions. Individual houses are not affected except on a block sale to a social landlord.
3. Compliance costs by type of work
The costs below are orders of magnitude for work in mainland France. They can vary significantly with the constraints of the site: difficult access, a listed building, an awkward configuration.
| Work | Unit | Indicative cost | Requirements | Exemption common? |
|---|---|---|---|---|
| External access ramp at 5 % or less | linear metre | 1 500 – 4 500 € a metre by material | Maximum gradient 5 %, 8 % exceptionally, width at least 1,20 m | Yes, where the change in level is under 0,17 m |
| New lift installation | lump sum | 40 000 – 80 000 € by travel | Buildings of three storeys or more, plant space required | Yes, where there is no space or the cost is disproportionate |
| Stair lift as an alternative | lump sum | 8 000 – 20 000 € | Limited in public buildings, accepted in housing subject to conditions | Yes, on technical justification with the commission's agreement |
| Accessible door, 0,90 m clear | each | 300 – 1 500 € by type | Handle at 0,90 m or below, 1,70 m of clear space | No, the cost is low |
| Accessible WC | lump sum | 3 000 – 8 000 € | A 1,50 m turning circle, grab rail | No, except where structurally impossible |
| Adapted signage, braille and contrast | lump sum | 1 500 – 5 000 € | Compulsory in public buildings, visual and tactile guidance | No |
| Entrance threshold | each | 200 – 800 € | A maximum 20 mm upstand, 40 mm chamfered, or a ramp | No, usually straightforward |
| Accessible parking space | each | 1 500 – 4 000 € a space | One space per fifty, with adapted dimensions | No |
ℹ The lift: the most expensive item and the most often misjudged Installing a lift in an existing building requires a shaft, which means either finding an existing free space, an oversized stairwell, a disused plant room, or forming a shaft as an extension or by taking part of a room. The cost of the shaft, in masonry, openings and finishes, can exceed the cost of the lift itself. In a four-storey building the total, shaft plus lift plus associated works, sits between 60 000 and 120 000 €. It has to be assessed at feasibility, not discovered at tender.
4. Exemptions: when and how
An exemption is not automatic. It is a procedure that has to be applied for and approved before the planning application goes in, and it rests on demonstrating a technical impossibility or a manifest economic disproportion.
| Ground | Applies to | Documents required | Decision-maker | Time |
|---|---|---|---|---|
| Established technical impossibility | All buildings | An engineer's or architect's report demonstrating the impossibility, with drawings and sections | The departmental safety and accessibility commission | 2 – 4 months |
| Heritage conservation constraints | Listed buildings | Prior agreement of the heritage architect plus a technical report | The commission and the heritage architect | 3 – 6 months |
| Manifest disproportion between cost and result | All buildings, mainly public | Comparative quotations showing compliance costs above 10 % of the total works budget | The commission | 2 – 4 months |
| Refusal by the owners' meeting | Residential blocks | The minutes recording the refusal | No commission; the record suffices | Immediate after the meeting |
The ground most often relied on in refurbishment is established technical impossibility, particularly for installing a lift in an older building whose structure cannot take a shaft without disproportionate work. The commission decides on the papers, so the technical report has to be precise and illustrated with drawings.
5. Reflecting accessibility in the estimate
Accessibility work should appear as a dedicated package or sub-package in the estimate, not scattered through the other packages. That legibility matters for three reasons: it lets the client see the regulatory cost, it makes any exemption application easier by isolating the item, and it allows compliance to be tracked at completion.
The accessibility package: the access ramp, alterations to the circulation, accessible sanitary facilities, adapted signage and accessible parking spaces.
Sub-items inside the other packages: accessible doors in the internal joinery, the accessible entrance door in the external joinery, contrasting floor finishes in the flooring package.
A provision for the exemption application: a technical report, drawings and comparative quotations cost 800 to 2 500 € depending on complexity.
On a public building of ordinary size, a 200 m² restaurant, a 150 m² medical practice, the accessibility budget is generally 3 to 6 % of the total refurbishment budget, that is 8 000 to 25 000 € depending on the starting condition. It rises to 8 to 12 % on older buildings with difficult access or significant changes in level.
In summary
In refurbishment the accessibility obligations are triggered by a planning application affecting the entrances or the circulation, which has to be identified at feasibility. Buildings open to the public are the most constrained, through a programmed agenda, full compliance or a justified exemption. Residential blocks have lighter obligations. Costs run from 200 € for a threshold to 80 000 or 120 000 € for a lift. Exemptions are available on four grounds: technical impossibility, heritage constraints, economic disproportion above 10 % of the budget, and refusal by the owners' meeting. The estimate should isolate the accessibility work in a dedicated package, to make both tracking and any exemption application easier.
The nature of the figures quoted
The percentages and amounts quoted on this page are orders of magnitude for framing, not measurements. They illustrate mechanisms and proportions, and they substitute neither for a tender exercise nor for an estimate prepared on drawings.
Articles liés
Sources: the BT construction cost indices published monthly by INSEE on its 2010 base, used to update the figures · construction cost statistics from SDES, the statistical service of the ministry responsible for construction · regulatory texts published in the Journal officiel and consolidated on Légifrance for the requirements cited.