C‑DRONE
Drone flying close to a building facade for inspection

🏢 FACADE INSPECTION · RENNES (35) · €300–1,200 PER JOB

Drone facade inspection in Rennes

Drone facade inspection documents a building's condition over its full height without a lift platform, rope-access technicians or road closures. Cracks, concrete spalling, loose elements, rebar corrosion, render detachment, tired expansion joints, water ingress: the high-resolution sensor, combined with zoom, records millimetre-scale defects tens of metres up. It is the ideal tool for pre-renovation surveys and the statutory monitoring of high-rise buildings.

The standard deliverable is a report organised by elevation (north, south, east, west) with defects mapped onto rectified photos, supplemented if needed by a georeferenced facade orthophoto usable by your engineering office. Property managers, architects, inspection bodies and local authorities use our surveys to prioritise works and secure perimeters where falling material is a risk.

Free quote — facade inspection in Rennes

Rates

€300–1,200 per job — the range observed on the 2026 French market, including regulatory preparation, flight and delivery. The exact quote depends on the site, the deliverable and the airspace context in Rennes.

Common use cases

The local context in Rennes

The Rennes-Saint-Jacques CTR covers the south-west of the city and imposes a protocol for most urban flights; the dense half-timbered old centre falls under the built-up-area scenario with notification to the Ille-et-Vilaine prefecture. The Pontchaillou hospital helipad, north of the centre, sees regular medical rotations to factor into mission planning.

Rennes' momentum feeds steady demand: EuroRennes and La Courrouze development sites, the Rennes Atalante technology campuses (cybersecurity, digital), heritage inspection following the Brittany parliament restorations, and the ever-present Breton agri-food industry on the outskirts, a buyer of crop monitoring and industrial imagery.

Applicable regulations

Facades to inspect are almost always in built-up areas: the usual regulatory framework is the specific category (STS-01 scenario, populated-area flight with a class C5 drone) with prior prefectural declaration, the open category over public space (open to professionals since 1 January 2026, no overflight of people, daytime only), or sub-category A1 with a sub-250 g C0 drone for small buildings. The flight is conducted a few metres from the wall, well under the 120 m limit; a ground safety perimeter is marked out when the drone operates above public space, and neighbouring owners' consent is sought when the flight requires crossing their plot. Operator registered on AlphaTango, professional aerial liability insurance and Géoportail drone-map checks are systematic.

Frequently asked questions

Does the drone fully replace an engineering survey?

No: the drone provides the exhaustive, documented visual record; structural interpretation of defects remains the engineer's or architect's job. Our reports are designed to feed directly into their analysis.

Can you inspect a facade on a busy street?

Yes, with a specific-category flight declared to the préfecture and a ground safety perimeter managed by an assistant. We often work early in the morning to minimise disturbance to pedestrians.

How accurate is the photographic survey?

At 5 m from the facade, resolution reaches roughly 1 mm per pixel: microcracks, joint defects and early corrosion are clearly identifiable and measurable on the images.

Can this service be flown anywhere in Rennes?

Almost: CTR de l'aéroport de Rennes-Saint-Jacques; Hélistation du CHU Pontchaillou; Centre historique dense (scénario agglomération). Depending on the exact location, the pilot picks the right framework (open or specific category) and files the required declarations — included in the quote.

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