Office identification signage: plates, numbers and panels

Three regulatory frameworks govern identification signage in tertiary offices. Article R4227-13 requires the marking of technical rooms and exits, supplemented by the order of 4 November 1993 on safety signage. The international reference framework for safety pictograms harmonises more than 80 universal symbols recognised in France. RGAA 4.1 and decree 2017-431 set a minimum contrast of 70% between background and characters, with a reading height of 1 cm per 1 m of distance.

The number of people allowed per floor depends on the egress routes: under article R4227-5, a single emergency staircase 1.40 to 1.50 m wide allows a maximum of 100 people per floor, which directly calibrates the number of wayfinding plates and evacuation plans to deploy.

• Harmonised pictograms: international signage reference framework
• Legibility contrast: RGAA 4.1, 70% minimum
• Safety signage: order of 4 November 1993
• Capacity and egress: R4227-5

Contrary to the most widespread interpretation in the profession, RGAA 4.1 does not apply only to public services: as soon as a tertiary office receives the public or external providers (audits, deliveries, visitors), the 70% contrast becomes enforceable under ERP accessibility. The growth of flex office requires modular marking of meeting rooms, phone boxes and collaboration zones.

Kytom’s five-step method over 12 weeks

The Kytom signage method unfolds in five phases calibrated for a typical 850 sqm floor, delivered in 12 weeks on average with installation in occupied premises.

1. Site audit, 1 to 2 days. Project managers survey the flows, inventory all doors and identify critical zones: reception, shared rooms, technical rooms.
2. Mapping plan, 10 working days. Numbered layout by floor and department, validated with the office manager.
3. Design and materials. Adaptation of the client’s brand guidelines, choice between anodised aluminium, 5 mm plexiglass, M1 vinyl, PEFC wood. Verification of RGAA contrast and compliance with standardised safety pictograms.
4. Production, 4 to 6 weeks. Production in partner workshops.
5. Installation in occupied premises. Work carried out at off-peak hours to limit disruption to teams already in place.

The 11 agencies coordinate multi-site rollouts for accounts with 5 to 30 locations. The qualified-company guarantee covers fixing and legibility for 2 years.

When this method is not the right one. Below 30 plates on a single floor, the rollout in five formalised phases generates a disproportionate fixed cost for audit and layout: direct installation on a standard brand guideline is then more efficient. Conversely, for temporary sites leased for under 18 months, engraved signage loses its purpose: a repositionable M1 vinyl kit is enough. Finally, for buildings undergoing major restructuring whose layout will change within 6 months, it is better to defer the final rollout and install temporary printed signage.

For the CFO and Asset Manager: read signage as a depreciable asset

Identification signage is too often treated as an embellishment expense. It is in fact a depreciable real estate investment, whose lifespan should align with the lease, not with graphic trends. Well-designed signage noticeably reduces the time visitors spend locating spaces, eases the workload of reception and guarantees ERP compliance: across all our completed projects, the signage component generated no reservations during inspections by approved bodies.

Financially, the cost of complete identification signage stands between 8 and 22 EUR excl. VAT per sqm, i.e. 6,800 to 18,700 EUR for a typical 850 sqm floor. Accounting depreciation over 5 years, validated by client CFOs in our feedback, brings the annual cost below 0.30 EUR excl. VAT per sqm per month.

For the Asset Manager: the trade-off rule applied on our projects is simple. Projected occupancy under 3 years, M1 vinyl and plexiglass are enough (low CAPEX, short accounting entry). From 3 to 7 years, 5 mm plexiglass on modular frames, the right compromise between lifespan and overhaul. Beyond 7 years or on an asset held in the portfolio, engraved aluminium is justified.

For the CFO: modular systems with interchangeable inserts significantly reduce the cost of future modifications compared with permanently engraved plates. On a floor that changes configuration every 24 to 36 months, the initial extra cost of the modular option (+15% on average) is recovered from the first overhaul.

Method

1. Mapping the spaces
   List all the rooms to be identified (offices, meeting rooms, departments, floors, technical rooms, accessible toilets). Validate the naming convention with management and Office Management. This step determines 80% of the project’s success.
2. Choosing the system and materials
   Select fixed vs interchangeable plates, finishes, colour code by department. Always favour modular media to absorb future reorganisations. Kytom provides a validated mock-up before production.
3. Production and quality control
   Standard production lead time: 8 to 10 working days. Each plate is checked individually (spelling, alignment, finish). A paper proof is submitted to you for validation before final engraving or printing.
4. Coordinated installation in occupied premises
   Installation at off-peak hours or weekends so as not to disrupt operations. 3M VHB adhesives without drilling preferred. Joint inspection on delivery and handover of the blank insert kit for after-sales autonomy.