C‑DRONE
Top-down orthophoto-style view of farmland parcels captured by drone

🗺️ SURVEYING & PHOTOGRAMMETRY · VALENCE (26) · €800–3,000 PER DAY

Drone surveying & photogrammetry in Valence

Drone photogrammetry turns a few hundred aerial photos into precision survey products: georeferenced orthophotography at 1–3 cm/pixel, digital surface and terrain models, 3D point clouds, contour lines, stockpile and earthworks volume calculations. With an RTK/PPK drone and ground control points measured by centimetre-grade GNSS, accuracy reaches 2 to 5 cm both horizontally and vertically — sufficient for most development studies, at a fraction of the cost of an exhaustive ground survey.

We cover from 1 to several hundred hectares per day depending on the required resolution, including hard-to-access sites: working quarries, landfills, riverbanks, industrial wasteland. Deliverables come in your coordinate system (Lambert 93 / RGF93, conic conformal projections) and standard formats (GeoTIFF, LAS/LAZ, DXF, GIS formats). Chartered surveyors, civil engineering offices, quarry operators and local authorities are regular clients.

Free quote — surveying & photogrammetry in Valence

Rates

€800–3,000 per day — 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 Valence.

Common use cases

The local context in Valence

Prefecture of the Drôme on the left bank of the Rhône, Valence marks the "gateway to the South": an old town around Saint-Apollinaire cathedral, the Peynet bandstand, the Jouvet park overlooking the river, and orchards and lavender fields at the city gates. Valence-Chabeuil aerodrome (LFLU), to the east, is the main aeronautical point of attention; the Rhône corridor also concentrates motorway, high-speed rail and river routes that trigger the rules on overflying transport infrastructure.

Valence's economy relies on food and gastronomy (the Vallée de la Gastronomie, Maison Pic), Rhône-corridor logistics and fruit and wine agriculture (Crozes-Hermitage nearby). Typical drone services: precision agriculture over orchards, infrastructure construction monitoring, tourism imagery along the ViaRhôna and residential real estate.

Applicable regulations

Survey flights mostly take place outside built-up areas, in open category A2 or A3 (photogrammetry drones weigh 900 g to 6 kg) flying automated grid patterns below the regulatory 120 m. Long corridors or populated sites fall under the specific category (STS-01/STS-02, or an operational authorisation for BVLOS on long corridors). The operator is registered on AlphaTango and checks regulated zones on Géoportail: quarries and industrial estates are often near airfields or under military low-altitude training routes (RTBA), requiring protocols or time slots. Legally binding georeferencing (enforceable boundary plans) remains the exclusive remit of chartered surveyors, with whom we work as subcontractors.

Frequently asked questions

What accuracy can a drone survey guarantee?

With an RTK drone and ground control points, we guarantee 2 to 5 cm XYZ accuracy, verified against independent checkpoints whose residuals are documented in the processing report.

Does a drone survey replace a chartered surveyor?

No for legally binding documents (boundary demarcation, land division): that is the chartered surveyor's legal monopoly. Yes for technical studies: our deliverables feed directly into civil works design, volume calculations and environmental studies.

Does vegetation interfere with photogrammetric surveys?

Yes: photogrammetry measures the visible surface, so the canopy rather than the ground beneath. For wooded areas, we offer drone LiDAR, which penetrates vegetation and reconstructs the bare terrain.

Can this service be flown anywhere in Valence?

Almost: Aérodrome de Valence-Chabeuil (LFLU); Couloir d'infrastructures du sillon rhodanien (A7, LGV, Rhône). 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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