Mise à jour : 18 mai 2026
Seminar10 min de lecture

Organising an outdoor company seminar: checklist and permits

Leaving the closed setting of a seminar room radically changes the employee experience. Here is how to get this format right, step by step, with permits, safety and providers.

Par l'équipe éditoriale Location Tente France
Basé sur 100+ événements installés / an et la veille réglementaire CTS

The outdoor company seminar has become a format increasingly favoured by HR and internal communications departments. Why? Because it breaks with the routine of hotel seminars and creates a more memorable experience for employees. But it adds a layer of organisational complexity: permits, weather, providers, safety, accessibility.

This checklist covers every point to address when organising an open-air or marquee seminar, from the initial brief through to the post-event takedown. It is aimed at HR directors, training managers, internal communications teams and event project leads.

We built this method on the basis of more than 100 outdoor seminars produced since 2020, mainly for companies of 50 to 1,000 employees. The lessons are concrete, some of them counter-intuitive.

Administrative lead-time checklist

Minimum anticipation per administrative step for a seminar of 100-500 people.

StepMinimum lead timeContactMandatory?
Permit to occupy public land60 daysTown hall / authorityIf public ground
Prefectural authorisation90 daysPrefectureIf > 1,500 people
ERP / CTS file30 daysTown hall + safety commissionIf > 50 people in a marquee
SACEM declaration21 daysSACEMIf amplified music
Owner agreement30 daysOwnerIf private ground
Drone authorisation30 daysPrefectureIf aerial capture
Organiser insuranceBefore signing contractsYour insurerYes (organiser public-liability (RC))

1. Choosing the venue: 5 criteria that make the difference

The venue is the most structuring decision of the project. Here are the 5 criteria to examine in order of importance.

Criterion 1: accessibility. The venue should be less than 90 minutes by public transport from your headquarters. Beyond that, you lose half a day to travel and the enthusiasm fades before arrival. Also check step-free access (PRM) if you have employees concerned.

Criterion 2: technical capacity. The site must be able to accommodate your set-up (marquee, toilet units, catering, parking). Check the nature of the ground (meadow / car park / slab), the slope (max 5%), the anchoring constraints, the electrical supply available.

Criterion 3: aesthetics and imagination. The venue must tell a story. A vineyard estate, a château, a nature park, a reconverted industrial wasteland, an organic farm: each creates a different imagination. Choose in keeping with your strategic message.

Criterion 4: availability and cost. Exceptional venues are booked 6 months to 1 year in advance. If you start late, your options narrow. The hire cost ranges from 0 € (free venue) to 15,000 € (premium landmark venue).

Criterion 5: weather flexibility. Do you have an indoor plan B in case of a storm? Does the venue allow you to sheet over or add heating if the weather turns? This is a point most organisers underestimate.

2. The administrative permits to anticipate

Depending on your venue and your capacity, several permits may be required. Here is the exhaustive list.

Permit to occupy public land: required if the event takes place on public ground (park, square, forecourt, esplanade). Lead time: 60 days minimum with the town hall or the managing authority. Cost: 50 to 500 €/day depending on the authority.

Prefectural authorisation: required if the capacity exceeds 1,500 people (large gathering) or if the event needs a particular arrangement (traffic, public highway, body of water). Lead time: 90 days minimum.

Town hall ERP / CTS declaration: mandatory for any marquee hosting more than 50 people. Lead time: 30 days minimum. Our safety file covers this declaration.

Noise / SACEM authorisation: if you have a DJ or music playback, plan a SACEM declaration (flat fee ~150-400 €). If the event is in a residential area, check the prefectural orders on night-time noise nuisance.

Agreement with the owner: if you hire private ground (vineyard estate, farm), formalise a precise contract with insurance, entry and exit inventory, conditions for restoration.

Authorisation to use a drone (for video capture): to be requested 30 days in advance from the prefecture if you are in an urban area. Outside urban areas, a simpler declaration.

  • Town hall / authority: 60 days ahead for occupation of public land
  • Prefecture: 90 days ahead for capacities > 1,500 people
  • ERP / CTS file: 30 days ahead for a marquee > 50 people
  • SACEM declaration: 21 days ahead for amplified music
  • Owner agreement: to be signed 30 days minimum before the event
  • Drone authorisation: 30 days ahead in an urban area

3. Safety and risk management

An outdoor seminar adds several risks that must be anticipated.

Weather risk: this is the foremost risk. Anticipate a preventive evacuation plan, a fallback under a covered structure (marquee, annexe room), clear instructions delivered at the welcome briefing. For a summer day, plan plenty of sun cream and water.

Sanitary risk: properly sized premium toilet units (1 cubicle per 50-100 people), water points for freshening up, signage towards the first-aid post or treatment point.

Food risk: a professional caterer is mandatory with a HACCP certificate, a documented cold chain, flagged allergen ingredients (2016 law), meals for specific diets (vegetarian, halal, gluten-free).

Accident risk: a workplace first-aider (SST) on site is recommended from 100 people, mandatory from 500 people. For physical activities (sporting team-building), a suitable medical arrangement.

Fire risk: up-to-date CO2 and water-spray extinguishers, training your team on their location and use, signposting of the emergency exits, a displayed evacuation plan.

Security risk (intrusion, surveillance): for events with a high confidentiality stake or with executives, plan one SSIAP agent per 200 people.

4. Technical logistics: detailed checklist

Here is the exhaustive list of points to validate at D-30, D-15, D-7 and D-1.

  • Electricity: power assessment (lighting, sound, video, heating, kitchen), power available vs required, back-up generator if needed
  • Toilet units: number of cubicles matching the capacity (1 per 50-100 people), hot water, step-free access (PRM), periodic cleaning during the event
  • Catering: professional caterer, cold chain, flagged allergens, vegetarian options, water point, waste management
  • Accommodation (2-day seminar): local accommodation capacity, shuttle to the event venue, cloakroom for luggage
  • Employee transport: dedicated shuttle or organised car-sharing, single meeting point, return guaranteed
  • Wi-Fi: sufficient coverage for 50% of guests simultaneously (training, demos, video presentations)
  • Furniture: tables, chairs, poseur tables, parasols if full sun, supplementary heaters if a cool evening
  • Signage: reception, toilet units, emergency exit, break areas, first-aid post
  • Capture: professional photographer, videographer, drone if authorised, a precise brief on the moments to capture
  • Gifts / goodies: to be handed out on arrival or at the end of the seminar, in keeping with your brand and your message

5. Programme and rhythm: alternating intensity and breathing space

A successful seminar alternates intense moments (plenary, workshop, debate) and breathing moments (coffee, lunch, walk, fun activity). Here is a typical day programme.

8.30 am: welcome coffee, handing out badges and the seminar kit. Short technical brief (emergency exit, toilet units, first-aid post). 15 minutes maximum.

9.00 am: opening plenary (45-60 min) with an executive, strategic vision, objectives for the day.

10.00 am: active coffee break (15 min) with pastries, fruit, water.

10.15 am: first workshop in sub-groups (90 min) with feedback. Maximum 6-8 participants per workshop.

11.45 am: transition and move towards lunch.

12.00 pm: buffet or seated lunch (90 min). Ideally, a convivial meal that mixes the usual teams.

1.30 pm: second workshop or collective activity (90 min). This is the ideal moment for physical or creative activities.

3.00 pm: afternoon-snack break (20 min).

3.20 pm: closing plenary (45 min) with workshop feedback, next steps, an inspirational message.

4.00 pm: official close. Handing out gifts if planned.

4.30 pm: free networking cocktail (1h30) with departure free afterwards.

Let's prepare your seminar from A to Z

Venue, structure, safety, providers, logistics: we take charge of the entire technical side. You stay focused on the educational content and the strategic message.

FAQ

Vos questions, nos réponses

Three measurable advantages. First advantage: memory impact +40% according to studies (memorable recollections form better in unusual environments). Second advantage: higher participation and engagement (+25% on average on active workshops). Third advantage: perception of the employer brand (+18% satisfaction on post-seminar surveys). Drawbacks: heavier logistics (+30% preparation time), weather risk (to be managed actively), a cost often 15-25% higher. The calculation is worth it if the goal is to leave a lasting mark on your employees.

Recommended from 100 employees, strongly recommended from 200, mandatory from 500 according to prevention doctrine. Minimal solution: a workplace first-aider (SST) among your team with an up-to-date first-aid kit. Intermediate solution: the presence of a paramedical team (1-2 professional first-aiders) for the duration of the event. Premium solution: an ambulance and a nurse on site for events > 500 people or for physical activities (sporting team-building). Cost of a paramedical arrangement: 350-800 € per day. It is an investment in peace of mind.

Three key points. Firstly, accommodation: a single hotel for 100% of participants ideally, or a maximum of 2 hotels linked by shuttle. Check the number of rooms, the quality, the breakfast, the Wi-Fi. Secondly, the evening of Day 1: plan a convivial dinner but not too alcohol-heavy (Day 2 starts early). The standing dinner / fork buffet format works better than a formal seated dinner. Thirdly, the timing of Day 2: start later than Day 1 (9.30-10 am rather than 8.30 am) to absorb the previous day's tiredness. A shorter programme (up to 4 pm max) with a focus on consolidation and next steps.

For 1 day, allow for 25,000 to 50,000 € excl. VAT all-inclusive: venue (3,000-8,000 €), structure / marquee (4,000-8,000 €), midday catering + cocktail (5,000-10,000 €), entertainment (3,000-8,000 €), transport (2,000-5,000 €), providers (photographer, sound, etc.: 3,000-6,000 €), goodies and sundries (2,000-5,000 €). For 2 days with accommodation, roughly double it (45,000-90,000 €). The cost per participant therefore lands around 250-500 €/day for 100 people, to be compared with 150-250 € for a standard hotel seminar. The extra cost is justified by the qualitative and memory impact.

For a first outdoor seminar, an agency brings real value (methodology, referenced providers, risk management). Cost: 8-15% of the total budget in fees. For recurring seminars (3+ a year with a stabilised format), managing it directly becomes more efficient. You keep the in-house knowledge and save the fees. Intermediate solution: an agency on the critical aspects (technical production, providers) and in-house management on the strategic aspects (content, programme, communication). This is often the best compromise.

Three insurances to check. Firstly, your standard company public-liability (RC): generally covers professional events but check the ceiling (10 M€ minimum recommended) and the exclusions (sometimes sporting or outdoor activities). Secondly, event organiser RC: to be taken out specifically for the event (300-1,500 € depending on scale). Thirdly, cancellation insurance: covers the inability to hold the event (weather, force majeure, executive unavailability). Cost: 1-3% of the total budget. Recommended for seminars > 50,000 € of budget. Ask your broker for an event pack suited to your format.

Six concrete levers. Favour a venue accessible by public transport (vs individual car). Work with a committed caterer (local, organic, anti-waste produce). Reduce goodies to useful objects or experiences (vs plastic goodies). Offset transport emissions through a carbon sequestration project. Build a useful activity (volunteer work, nature workshop) into the programme. Communicate internally on the post-event environmental assessment. These approaches are valuable provided they are authentic: a single lever genuinely applied is worth more than 6 levers displayed with no follow-through.

The first 30 minutes determine 50% of the overall perception. Four rules. First rule: a warm, personalised welcome (named badges, coffee-snack, an available team). Second rule: a short brief (5 min max) on the programme and the practical aspects. Third rule: a strong opening by the executive (10-15 min) that sets out the meaning, the stake, the ambition. Fourth rule: a quick first exercise that mobilises the participants (collective icebreaker, mini-quiz, interactive poll). If you start with a static one-hour plenary, you lose 30% of the participants psychologically before the coffee break.