Cadreatech Engineering Services Limited
Field-verified, instrument-grade survey data for civil and structural engineering projects. From initial site characterisation to post-construction as-built verification — all under EBK-governed engineering practice.
What we do
Each service is delivered using calibrated field instruments — RTK GNSS, total station, or UAV — processed in AutoCAD Civil 3D, and issued with a written accuracy statement and full supporting data.
3D mapping of terrain, contours, elevations, and surface features — both natural and man-made. The foundational dataset for site design, drainage layout, grading, road design, and building placement. Delivered as a Civil 3D surface model with full contour output.
Learn more about topographic surveys →Translating approved engineering designs from drawings onto the ground. We mark column grid lines, foundation positions, road centrelines, drainage invert levels, and slab reference points so construction proceeds exactly to design intent.
Learn more about setting out →Post-construction verification that built works match approved drawings — checking levels, alignments, dimensions, and deviations. Required for county occupancy certificates, NCA compliance, project closeout, and client handover documentation.
Learn more about as-built surveys →Calculating earthwork volumes for excavation, fill, and site grading. Critical for costing and planning site levelling, basement excavation, embankments, and road subgrade preparation. Output includes mass haul diagrams and balance point analysis.
Longitudinal profiling and cross-section generation along road, pipeline, drainage, and sewer corridors. Provides the vertical alignment data that drives hydraulic design, pipe gradient calculations, and road formation levels.
Establishing Ground Control Points (GCPs) and benchmarks using RTK GNSS and total station. These horizontal and vertical controls form the accuracy backbone for all other survey work on larger sites and multi-phase infrastructure projects.
Aerial data capture for large sites, hard-to-access terrain, or rapid area coverage. Produces orthomosaic imagery, Digital Surface Models, Digital Elevation Models, and 3D point clouds processed into engineering-ready deliverables.
Detailed analysis of site gradients for drainage design, road geometry, accessibility compliance, and erosion risk assessment. Outputs slope maps, gradient tables, and recommendations for cut-and-fill or retaining structures.
Pre-design site characterisation capturing slope gradients, drainage patterns, access constraints, existing structures, and utility positions. Equips architects and engineers with the full spatial picture before a line is drawn.
Survey of existing drainage channels, culverts, outlet points, and catchment areas combined with flood level mapping. Supports stormwater design, NEMA environmental assessments, and county drainage compliance for new developments.
What you receive
Every engagement includes a structured deliverable package, calibrated to the scope and intended end-use of the survey data.
01
Full survey drawing with layers, contours, coordinates, benchmarks, and reference grid — ready for design team use
02
Point data file for import into Civil 3D, 12d, Bentley, or any design software
03
3D terrain model for volume calculations, drainage analysis, and visualisation
04
Written report covering methodology, equipment, accuracy statement, and survey findings
05
Site photos documenting conditions at time of survey for design reference and records
06
Cut-and-fill tables and earthwork quantity summaries where applicable to the scope
How we work
A consistent, quality-controlled workflow from initial site visit through to final deliverable handover — applied on every project regardless of size.
Pre-survey visit to assess terrain, vegetation, access, and control point placement requirements
Setting up horizontal and vertical Ground Control Points using GNSS and total station
Systematic collection of spot heights, break lines, features, and boundary details across the site
Import, cleaning, and surface modelling in AutoCAD Civil 3D from raw field data
Closure checks, outlier review, and contour sense-check against field notes and instrument readings
DWG drawings, CSV data, PDF report, and accuracy statement issued to client for design team use
Equipment & software
We use calibrated, industry-standard instruments to ensure engineering-grade accuracy on every project.
RTK GNSS / GPS
Centimetre-level positional accuracy
Total Station
Angle and distance measurement
UAV / Drone
Aerial photogrammetry mapping
AutoCAD Civil 3D
Primary processing and drafting
PNEZD Data Format
Universal point export standard
Digital Level
High-precision vertical control
Who we work with
Our engineering survey services support a wide range of project types across both public and private sectors in Kenya.
Common questions
What is the difference between engineering survey and cadastral land survey in Kenya?
Engineering survey supports construction and design — mapping terrain, setting out structure positions, and verifying built works. Cadastral survey deals with legal land ownership — boundaries, title deeds, and subdivision. In Kenya, cadastral surveys require a Land Surveyors Board (LSB) licensed surveyor. Engineering surveys are governed under EBK as part of civil engineering practice. Cadreatech provides engineering surveys only.
How long does a topographic survey take?
Turnaround depends on site size and complexity. A standard residential plot (0.1–1 acre) typically takes 1–3 days field work plus 2–3 days processing. Larger sites of 5–50 acres may take 5–10 working days total. We provide a specific timeline estimate at quotation stage once we have the site details.
Do I need a topographic survey before my architect begins design?
Yes — and ideally before any design work begins. A topo survey gives your architect and structural engineer accurate contours, spot heights, drainage directions, and site features. Without it, designs are based on assumptions that often require expensive revision once real site conditions are discovered during construction.
Is an as-built survey required for county occupancy certificate in Kenya?
County requirements vary, but most counties require proof that the completed structure conforms to approved drawings before issuing an occupancy certificate. An as-built survey provides this verification formally. It is also required when legalisng structures built without approval, where penalty fees and as-built documentation are mandatory.
What file formats do you deliver survey data in?
Standard deliverables include DWG (AutoCAD Civil 3D), CSV (PNEZD point data), PDF (report and drawings), and JPG (field photographs). On request we can also deliver in DXF, LandXML, or specific formats required by your project team's software environment.
Do you cover sites outside Nairobi?
Yes. We cover projects across Kenya. For sites outside Nairobi, site reconnaissance and mobilisation costs are included in the quotation. For large remote sites or multi-site programmes, contact us to discuss a project-specific arrangement.
Explore specific services
Share your site location, project type, and scope — we will provide a detailed quotation within 48 hours. All engagements begin with a free consultation to understand your project requirements.
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