LGEO
Bilingual Catalogue · 2026

Surveying & geospatial services, structured for real deliverables.

LGEO transforms field measurements into decision-ready deliverables. From a single site survey to a multi-disciplinary infrastructure programme, our workflow combines precise acquisition, national georeferencing, rigorous quality control and open digital formats.

Four disciplines · 16 services

An integrated surveying and geospatial offer.

Every deliverable is georeferenced in the Luxembourg national reference system (LUREF / NG-L) and issued in open, interoperable formats.

Engineering Surveying
Topographie d'ingénierie
5 services
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Reality Capture
Capture de réalité
4 services
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Infrastructure & Environment
Infrastructures et environnement
5 services
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Digital Geospatial
Géospatial numérique
2 services
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Operational Sector · 01
Topographie d'ingénierie

Engineering Surveying

Precision
±2–3 cm

Topographic Surveys

Complete planimetric and altimetric capture of visible site features, georeferenced in the Luxembourg national reference system — a reliable design base for architecture, planning, civil engineering and land development.

Typical applications
  • Architectural and engineering design
  • Planning studies and site feasibility
  • Roads, drainage and external works
  • Terrain development and earthworks
Key deliverables
  • Georeferenced DWG and scaled PDF plan
  • Point list in CSV/TXT format
  • Digital terrain model and LandXML on request
  • Signed survey report and photo record
Method
Robotic total station, GNSS RTK, digital levelling, coded field acquisition.
Precision
±2–3 cm horizontal / ±2 cm vertical for standard 1:200 – 1:500 surveys.
LGEO-SRV-01
Precision
±2–10 mm

Construction Stakeout

Precise transfer of approved design geometry to the construction site: axes, corners, elevations, structural grids, road alignments and formwork points, materialised and independently checked before execution.

Typical applications
  • Buildings and structural grids
  • Foundations, slabs and formwork
  • Roads, kerbs and utility alignments
  • Industrial and prefabricated elements
Key deliverables
  • Signed stakeout report
  • Coordinates of materialised points
  • Site sketch and photographic evidence
  • Control measurements and achieved tolerances
Method
Robotic total station and GNSS, with redundant observations and independent control shots.
Precision
±2–10 mm depending on the structure and project requirements.
LGEO-SRV-02
Precision
±5 mm

As-Built Surveys

Measurement of completed works to verify actual position, geometry and elevation against the approved design — buildings, structures, façades, roads, utilities and progressive construction records.

Typical applications
  • Building and structural verification
  • Road and utility commissioning
  • Façade and envelope control
  • Handover and compliance documentation
Key deliverables
  • As-built DWG/PDF plans
  • Design-versus-measured deviation table
  • Coordinates and invert levels
  • Photo log and conformity summary
Method
Total station, GNSS and laser scanning selected according to geometry and tolerance.
Precision
5 mm to 3 cm according to structural, building or network scope.
LGEO-SRV-03
Precision
spec.

Construction Site Survey Support

Planned recurring on-site support throughout construction — stakeout, level transfer, control measurements, progressive as-built capture and rapid technical response. Continuity from design to handover.

Typical applications
  • General contractors and structural works
  • Large residential and mixed-use sites
  • Industrial and infrastructure construction
  • Fast-track or multi-phase projects
Key deliverables
  • Visit reports and updated control plans
  • Stakeout and level-transfer records
  • Progressive as-built datasets
  • Issue log and measurement traceability
Method
Dedicated survey resources, planned visits, controlled data exchange and rapid mobilisation.
Precision
Each task executed to the tolerance defined for the corresponding stakeout, control or as-built activity.
LGEO-SRV-13
Precision
±5 mm

Building & Architectural Surveys

Detailed measurement of existing interiors and exteriors — floor plans, façades, sections, roofs, openings and levels — using conventional and scan-based methods matched to complexity.

Typical applications
  • Renovation and refurbishment
  • Permit and design documentation
  • Area verification and space planning
  • Façade, roof and heritage records
Key deliverables
  • Floor plans, sections and elevations
  • DWG/PDF drawing package
  • Point cloud or 3D model on request
  • Photo record and measurement report
Method
Laser scanner, total station, laser distance meter and controlled architectural drafting.
Precision
≈5 mm to 2 cm according to scale, access and building complexity.
LGEO-SRV-14
Operational Sector · 02
Capture de réalité

Reality Capture

Precision
±2–4 cm

Drone Mapping & Aerial Photogrammetry

High-resolution aerial acquisition for rapid mapping of sites, corridors and large areas. RTK/PPK workflows and surveyed control points produce accurate orthophotos, terrain models, point clouds and 3D meshes.

Typical applications
  • Construction progress and site documentation
  • Quarries, earthworks and stockpiles
  • Urban planning and land development
  • Environmental and corridor mapping
Key deliverables
  • Orthophoto in GeoTIFF/ECW
  • DSM, DTM and contour lines
  • Dense point cloud in LAS/LAZ
  • 3D mesh and mission quality report
Method
RTK/PPK drone, ground control points, independent check points and photogrammetric processing.
Precision
2–4 cm with appropriate control and operating conditions.
LGEO-SRV-04
Precision
±2–6 mm

3D Laser Scanning

Dense, contactless reality capture of buildings, façades, heritage assets, industrial installations and civil structures. The registered point cloud preserves complex geometry for drawings, models and inspections.

Typical applications
  • Renovation and transformation projects
  • Heritage and façade documentation
  • Industrial plants and MEP environments
  • Bridges, tunnels and complex structures
Key deliverables
  • Registered E57, RCP and LAS/LAZ point clouds
  • Plans, sections and elevations in DWG/PDF
  • Orthographic views and 3D meshes
  • Registration and accuracy report
Method
Terrestrial laser scanning with surveyed targets, cloud registration and coverage control.
Precision
2–6 mm at 10 m, depending on instrument, geometry and environment.
LGEO-SRV-05
Precision
spec.

Terrain Modelling — DTM / DSM

Digital terrain and surface models from field survey, drone photogrammetry or LiDAR — structured for design, grading, drainage, hydraulic simulation, visibility analysis and quantity calculations.

Typical applications
  • Civil and road design
  • Grading and drainage studies
  • Hydraulic and flood modelling
  • Planning and landscape analysis
Key deliverables
  • TIN surface and breaklines
  • Contour lines at required interval
  • LandXML, DWG and GeoTIFF
  • Profiles, slopes and volume comparisons
Method
Combined processing of total station, GNSS, drone and LiDAR datasets with terrain classification.
Precision
Documented against source data, control network and requested model resolution.
LGEO-SRV-09
Precision
spec.

BIM Surveying & Scan-to-BIM

Verified reality-capture data transformed into coordinated BIM models. Point clouds aligned to project coordinates and modelled to the agreed LOD/LOI for renovation, asset management and coordination.

Typical applications
  • Renovation and rehabilitation
  • Existing-condition BIM
  • Asset and facility management
  • Design coordination and clash review
Key deliverables
  • Native Revit model and IFC export
  • Registered point-cloud reference
  • LOD/LOI compliance matrix
  • NWD/BCF coordination package and quality note
Method
Laser scanning, photogrammetry, shared-coordinate setup, BIM modelling and model checking.
Precision
Tolerances agreed in the EIR/BEP and verified against the registered point cloud.
LGEO-SRV-10
Operational Sector · 03
Infrastructures et environnement

Infrastructure & Environment

Precision
±2 cm

Infrastructure Surveys

Integrated surveying for road, rail, tram, bridge, tunnel, river and utility-corridor projects. Multiple sensors are combined to capture the corridor, structures, terrain and interfaces required by design teams.

Typical applications
  • Road and rail corridors
  • Bridges and engineering structures
  • Tunnels and stations
  • Utility and energy corridors
Key deliverables
  • Georeferenced corridor plan
  • Longitudinal profiles and cross-sections
  • DTM, breaklines and LandXML
  • Structural details and control network report
Method
GNSS, robotic total station, precise levelling, laser scanning and drone mapping.
Precision
≈2 cm absolute; up to 5 mm relative for structural detail.
LGEO-SRV-06
Precision
spec.

Volume & Stockpile Surveys

Repeatable measurement of stockpiles, earthworks, excavation, embankments and landfill cells. Surface-to-surface comparison produces transparent cut, fill and net quantities.

Typical applications
  • Quarries and aggregate stocks
  • Construction earthworks
  • Excavation and backfill control
  • Waste and landfill operations
Key deliverables
  • Volume report with cut/fill/net quantities
  • Reference and measured surfaces
  • Comparison maps and 3D views
  • Orthophoto or point-cloud extract
Method
Drone photogrammetry, laser scanning or terrestrial survey with TIN-to-TIN comparison.
Precision
±2–4% reporting uncertainty, depending on surface, density and reference quality.
LGEO-SRV-07
Precision
±0.3–1 mm

Deformation Monitoring

High-precision repeat measurements to detect settlement, displacement, rotation or deformation over time. Manual or automated campaigns with stable references, alert thresholds and traceable time series.

Typical applications
  • Sensitive buildings and excavations
  • Retaining walls and slopes
  • Bridges, tunnels and rail infrastructure
  • Industrial structures and heritage assets
Key deliverables
  • Campaign report and adjusted coordinates
  • Displacement vectors and time-series charts
  • Measurement uncertainty per axis
  • Alert status and threshold assessment
Method
Precision total station, permanent GNSS, prisms, tiltmeters and monitoring software.
Precision
0.3–1 mm with automated total-station systems; 1–3 mm with permanent GNSS.
LGEO-SRV-08
Precision
±2–3 cm

Road & Highway Design Surveys

Detailed corridor surveys for road and highway design — pavement, kerbs, drainage, signs, utilities, structures, terrain and surrounding constraints, organised for direct use by civil-design teams.

Typical applications
  • Road rehabilitation and widening
  • Junctions, roundabouts and active mobility
  • Drainage and utility coordination
  • Public-realm and streetscape redesign
Key deliverables
  • Detailed corridor plan
  • Longitudinal profiles and cross-sections
  • DTM, breaklines and LandXML
  • Asset and utility layers for design
Method
GNSS, total station, precise levelling, drone and optional mobile/laser scanning.
Precision
2–3 cm for standard design capture, tighter for structures and drainage.
LGEO-SRV-15
Precision
spec.

Hydraulic & Flood-Zone Surveys

Topographic and hydraulic capture of rivers, floodplains, banks, culverts, bridges and control structures — the geometry and vertical reference required for hydraulic modelling and river engineering.

Typical applications
  • River cross-sections and longitudinal profiles
  • Floodplain terrain models
  • Culverts, bridges and hydraulic structures
  • Bank restoration and environmental projects
Key deliverables
  • Cross-sections and longitudinal profiles
  • Floodplain DTM and contour mapping
  • Structure dimensions and invert levels
  • GIS/CAD package referenced to NG-L
Method
GNSS, total station, precise levelling, drone/LiDAR and bathymetric methods when required.
Precision
Vertical control tied to NG-L; project precision defined by the hydraulic model and site conditions.
LGEO-SRV-16
Operational Sector · 04
Géospatial numérique

Digital Geospatial

Precision
spec.

Underground Utility Detection & Mapping

Detection, marking and georeferenced mapping of underground utilities to reduce excavation risk and improve asset records. Operator plans are reviewed before field detection and positioning.

Typical applications
  • Pre-construction utility clearance
  • Road and public-space projects
  • Utility renewal and asset inventory
  • Open-trench as-built documentation
Key deliverables
  • Utility plan with position and depth information
  • Detection method and confidence classification
  • Topographic coordinates and photo log
  • GIS-ready network data when required
Method
Operator-plan review, electromagnetic locator, GPR and total-station/GNSS positioning.
Precision
Depends on detection conditions; open-trench validation provides the highest confidence.
LGEO-SRV-11
Precision
spec.

GIS Data Collection & Mapping

Design and execution of field-data programmes for municipal, utility, environmental and infrastructure assets. Structured geospatial databases support inventory, maintenance, analysis and digital services.

Typical applications
  • Trees, signs and street furniture
  • Drainage and utility assets
  • Environmental and natural-park inventories
  • Municipal and enterprise asset registers
Key deliverables
  • GeoPackage, GeoJSON or Shapefile datasets
  • Data model and attribute dictionary
  • Metadata and symbology files
  • Quality-control and completeness report
Method
GNSS-enabled field devices, QField/ArcGIS Field Maps, database design and GIS quality assurance.
Precision
Selected according to asset type, operational use and required survey method.
LGEO-SRV-12
Quality by design

A controlled end-to-end workflow.

From scoping to delivery, every project runs through five documented stages so accuracy and traceability are never optional.

  1. 01
    Define

    Scope, required precision, references, access, deliverables and file formats.

  2. 02
    Acquire

    Sensor selection, control network, redundant observations and field quality checks.

  3. 03
    Process

    Georeferencing, adjustment, classification, modelling and structured production.

  4. 04
    Verify

    Independent checks, accuracy statement, completeness review and version control.

  5. 05
    Deliver

    Clear bilingual reports and interoperable CAD, GIS, point-cloud and BIM data.

Luxembourg reference systems

Georeferenced, standards-compliant, interoperable.

Coordinates
LUREF / Luxembourg TM — EPSG:2169
Altitudes
NG-L (Nivellement Général du Luxembourg)
Open formats
DWG · PDF · CSV · LandXML · LAS/LAZ · GeoTIFF · IFC · GeoPackage
Quality
Accuracy and limitations documented in every final package

Professional scope. LGEO provides private engineering surveying and geospatial services. Official cadastral boundary work and documents reserved to a géomètre officiel are excluded, unless delivered through an appropriately qualified partner.

Not sure which service you need?

Describe the site and outcome you're after — a Luxembourg-based surveyor will scope the right combination and come back within 24–48 hours.