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C-DRONE GUIDE · 9 OCTOBER 2026
Drone map of Loire-Atlantique (44): Nantes, estuary, prices
Along 60 kilometres of estuary, Loire-Atlantique packs a metropolis, a regional airport, a major seaport, a refinery, Europe's leading LNG terminal, an outsized shipyard and France's second-largest wetland. For a company or a local authority commissioning a drone job in the 44, the drone map therefore changes character every ten kilometres: an airport ceiling in Nantes, a restricted-access zone in Donges, bird sensitivity in the Brière. Here is how to read it, which jobs come up most, and what they cost in 2026.
Published on 9 October 2026 — regulations in force as of September 2026.
A département growing around its estuary
With 1,487,570 inhabitants in 2023 and growth of about 1.1% a year since 2017, Loire-Atlantique is one of the most dynamic départements in western France. Its population and business line the Loire: the Nantes metropolis upstream, the industrial string of Cordemais, Donges and Montoir in the middle, Saint-Nazaire at the mouth, then the La Baule coast and the Guérande peninsula. To the north lie vineyards and the Châteaubriant hedgerow country; to the south, the Pays de Retz and Lake Grand-Lieu.
For a drone job, this geography creates three very different terrains. In the Nantes metropolis, the constraint is urban and airport-related, and most flights are populated-area flights with prior notification. Along the industrial estuary, it is port and industry: security, prevention plans, Seveso sites. In the marshes and on the coast, it is environmental: reserves, Natura 2000 sites, breeding and wintering birds. The same contractor can do all three in one week, with three files that have almost nothing in common.
Reading the drone map: Nantes-Atlantique and Saint-Nazaire-Montoir
The official Géoportail drone-restriction map is the only reference with legal weight. In Loire-Atlantique, two airfields shape it.
Nantes-Atlantique. Located in Bouguenais, south-west of the conurbation, the airport was kept as the region's main platform after the Notre-Dame-des-Landes project was abandoned in January 2018. Its control zone covers much of the metropolis, and its runway axis points towards central Nantes: the maximum heights shown for drones drop sharply near the airport and along that axis, down to sectors closed without an agreement. Rezé, Bouguenais, Saint-Aignan-Grandlieu, Saint-Herblain and the Île de Nantes are where the question comes up most often.
Saint-Nazaire-Montoir. This airfield, right next to the Airbus sites and the shipyards, is used in particular by the Beluga cargo aircraft that carry fuselage sections. Its surroundings, and those of the industrial port zone, also require a detailed check.
We give no generic height: it depends on the exact address, sometimes on the plot. Our Pays de la Loire regional guide places these airfields among the region's other aerodromes. Above the ceiling shown, an agreement from air navigation services is needed, and its lead time adds to the 10 working days of the préfecture notification required for any professional flight over a populated area since 1 January 2026. Temporary restrictions — large gatherings in Nantes, water events on the coast — are checked by NOTAM the day before the flight.
The industrial estuary: port, refinery, LNG terminal
The Nantes Saint-Nazaire seaport stretches from the Cheviré and Roche-Maurice terminals in Nantes to Saint-Nazaire, with its major sites at Donges and Montoir-de-Bretagne. Its area hosts about 70 classified installations, including three upper-tier Seveso sites. The Donges refinery, founded in 1932, and the Montoir LNG terminal, described as Europe's largest with a capacity of around 10 billion m³ of gas a year, are the two landmarks.
On these sites, three regimes stack and none replaces another. Port security first: restricted-access zones fall under the ISPS code, with security clearance and access passes, following the procedure in our guide to drone flights in a port restricted area. Industrial safety next: the operator's prevention plan, work permit and explosive-atmosphere rules, which can exclude any non-certified equipment from part of the site. Aviation rules last: map, notification, possible agreement. The drone only takes off once all three are settled, and it is the site operator, never the contractor alone, who sets the time slots.
Typical jobs are inspecting hangar roofs and cladding exposed to salt spray, thermography of installations, surveys of quays and yards, volume measurement of bulk stockpiles and monitoring of energy-conversion projects. Shipbuilding and offshore wind, already covered in the regional guide, add to the list.
Brière and the estuary: surveying without disturbing
The Brière regional nature park, created in 1970, covers 56,500 hectares across 21 municipalities, including 21,200 hectares of marshland: it is France's second-largest wetland after the Camargue, and the wider area was recognised as a UNESCO biosphere reserve in 2025. The Loire estuary, with its mudflats, reed beds and flood meadows, is also a major bird site. Further west, the Traicts du Croisic fall under a reserve where overflights are banned without permission, as explained in our guide to the Guérande salt marshes.
Requests there are nonetheless many and legitimate: nature-site managers, river-basin authorities, local councils and consultancies order marsh orthophotos, surveys of canals and water-control structures, terrain models for water-level management, and monitoring of banks and dykes. The general framework does not ban flying over a regional nature park or a Natura 2000 site, but it does ban intentional disturbance of protected species, and local reserve rules prevail.
The systematic review by Margarita Mulero-Pázmány and co-authors, published in 2017 in PLoS ONE, shows that bird reactions to drones depend on species, season, distance and approach path (see the study). In practice: plan outside the nesting season where possible, fly high in regular lines rather than direct approaches, and involve the site manager in the flight plan. On method, Ian Turner, Mitchell Harley and Christopher Drummond showed in Coastal Engineering in 2016 that drone photogrammetry produces accurate, high-resolution surveys of coasts and intertidal zones at a cost compatible with repeated campaigns (see the study): it is repetition over time that gives a survey of a living estuary its value.
The Nantes metropolis: construction, heritage and offices
In the conurbation, demand is primarily real-estate and urban: monitoring housing and office construction in a metropolis that gains residents every year, inspecting warehouse roofs and business parks on the outskirts, thermography of office buildings and condominiums before renovation, imagery of new developments for marketing. The Île de Nantes, the former shipyard site turned into a district for creative industries, health and offices, concentrates much of the construction, under an airport constraint to be checked case by case.
Heritage adds to this: the Château des ducs de Bretagne, the cathedral, the Loire bridges and, at the river mouth, the Saint-Nazaire bridge, more than 3.3 kilometres long, whose structural inspections follow the operator's own procedures. On a listed monument, a photogrammetric survey documents the state of roofs and masonry before works; on a bridge, the drone prepares and targets the inspectors' work without replacing it. In both cases, the owner's or operator's authorisation comes before any aviation step.
To have every rule and useful contact for the region at hand — aerodromes, préfectures, reserves, port specifics — our Pays de la Loire edition of the regulation guide gathers them in a single document updated for 2026.
Method, lead times and 2026 prices
The sequence follows the usual pattern, weighted differently depending on the terrain: zone analysis at the exact address (Nantes-Atlantique and Montoir ceilings, port zones, reserves, ZICAD, temporary restrictions), choice of regulatory framework, preparation with the site (written consent, port security clearance, prevention plan, nature-site manager's agreement), flight, processing, delivery. Allow two to three weeks in the metropolis, often more in port areas because of clearances, and a seasonal window in the marshes. Regulations in force in September 2026.
Ranges observed in Loire-Atlantique in 2026, excluding VAT:
| Service | Observed price (excl. VAT) |
| Half day in the metropolis (roof, construction monitoring, shoot) | €450 to €850 |
| Inspection on a port or industrial site (visual + thermal) | €1,100 to €2,600 |
| Orthophoto and terrain model of a marsh sector (up to 100 ha) | €1,500 to €3,000 |
| Bank or dyke monitoring campaign (per visit) | €700 to €1,500 |
| Aviation agreement near Nantes-Atlantique or Montoir (surcharge) | €200 to €500 |
For a price, request a quote giving the exact address or sector, the expected deliverable and, in a port area, the operator who will host the team.
Frequently asked questions
Can a drone be flown in Nantes?
Yes for a professional, within the height limits the Géoportail map shows at the exact address: much of the metropolis lies under the Nantes-Atlantique control zone, with ceilings that fall towards the airport. In town, a prior notification to the préfecture is required at least 10 working days before the flight, and an aviation agreement above the ceiling shown.
Is flying over the Brière marshes forbidden?
Not across the board: the regional nature park does not itself ban overflights, but disturbing protected species is prohibited and some sectors, reserves in particular, have their own rules. A professional job is prepared with the site manager, preferably outside the nesting season.