Gensre Engineering & Research: engineering, surveying, GIS, environmental and research consultants

Our services

• Surveying & Mapping - High-precision GPS/GNSS surveys, topographic mapping, and boundary surveys in Kenya. Certified surveyors delivering legally compliant, millimetre-accurate spatial data.
• Research & Technical Reporting - Rigorous feasibility studies, technical reports, and research services for engineering, environment, and development projects in Kenya. Evidence-based, donor-ready documentation.
• Dashboards & Digital Tools - Custom GIS dashboards, data visualisation platforms, and real-time monitoring tools for engineering, environment, and development projects in Kenya. Interactive. Scalable. Decision-ready.
• Geospatial Analysis & GIS - Expert GIS mapping, satellite imagery analysis, and spatial modelling services in Kenya. Data-driven geospatial intelligence for land, environment, and infrastructure decisions.
• Environmental Assessment & Sustainability - NEMA-licensed EIA and environmental audit services in Kenya. Rigorous impact assessments, biodiversity surveys, and sustainability consulting for regulatory compliance and ESG reporting.
• Civil & Structural Engineering - Full-cycle civil and structural engineering in Kenya; feasibility, design, drainage, road alignment, and construction supervision. EIA-integrated, donor-compliant infrastructure delivery.
• Architectural Visualization (ArcViz) - Photorealistic 3D renderings, walkthroughs, and interactive environments for architecture, infrastructure, and urban planning projects in Kenya. Transforming design data into compelling visual communication.

Industries we serve

• Agriculture & Food Systems - Precision agriculture mapping, irrigation planning, soil health analysis, and crop monitoring to improve yields and resource efficiency across East Africa.
• Climate & Environment - Climate adaptation planning, carbon stock monitoring, environmental impact assessments, and ecosystem mapping for organisations navigating environmental change.
• Disaster Risk & Resilience - Emergency mapping, rapid damage assessment, evacuation route planning, and infrastructure resilience analysis for preparedness and recovery.
• Infrastructure Development - Road design, bridge engineering, drainage systems, and construction management for transportation networks, utilities, and urban development projects.
• Water Resources & Hydrology - Watershed management, water supply planning, flood risk modelling, and water quality assessment for sustainable water security.

Recent projects and case studies

• Digital Twin Development Project - Smartphone photogrammetry study producing a measurable 3D digital twin of a building façade. 33 images processed in 3DF Zephyr delivered an OBJ textured mesh validated against a 2.1m field benchmark.
• Drone Orthophoto & DTM Survey - UAV photogrammetry programme using WebODM to generate a georeferenced orthophoto and bare-earth DTM from high-resolution drone imagery, with distance and area measurements validating spatial output fidelity.
• Kenya National Thematic Mapping Programme - Nationwide geospatial programme delivering eleven interlinked thematic layers — elevation, rainfall, LULC, slope, RUSLE factors, and hydrological indices — as the authoritative spatial baseline for Kenya.
• Mukarara ESP Market - Clerk of Works supervision for a KShs. 110.5 million market structure in Kirinyaga, covering RC slab works, formwork, skim-coat finishes, and timber door installations across an 18-month programme.
• Nairobi 3D Urban Building Model - Large-scale 3D urban modelling of Nairobi combining OSM building footprints with height attribution to produce an extruded, colour-coded city scene for density analysis and planning visualisation.
• Rural Roads Axle Load Monitoring & Survey - Axle load monitoring and road condition survey across Kenya's rural network for KeRRA, producing georeferenced data to inform pavement preservation and maintenance prioritisation.
• Tithonia diversifolia Distribution Mapping — Nyeri Central - GPS-based species distribution survey mapping Tithonia diversifolia across five wards in Nyeri Central Sub County, producing a publication-ready cartographic baseline for invasive species management.
• Urban Road Alignment Survey Programme — Mogadishu Arterial Roads - Route survey and geometric alignment programme for four urban arterial roads in Mogadishu, delivering 4.3 km of station-chained centreline data in UTM Zone 38N for construction set-out and pavement design.
• Zipline and Sky Bike Layout — Kilifi County - Engineering survey and georeferenced layout design for a dual zipline and sky bike attraction in Kilifi County, delivering cable alignments, tower coordinates, and landing zone boundaries for construction and safety compliance.

Research publications

• Automating NDVI-Based Crop Health Monitoring Using Open-Source Remote Sensing and AI-Assisted Workflow Integration in the Mwea Irrigation Scheme, Kenya - Integrating spatiotemporal NDVI analysis, n8n workflow automation, and Gemini AI for precision irrigation decision support
• Uncertainty-Aware Geospatial Foundation Model for Delineating Wetlands, Open Water, and Terrestrial Boundaries in a Tropical Lake Basin System - Integrating OLMoEarth V1 Nano embeddings with Sentinel-1 SAR and Sentinel-2 optical data through cross-season feature stacking for probabilistic wetland mapping

Latest insights

• Why EIA Projects Stall at NEMA: Five Common Mistakes and How to Avoid Them - An Environmental Impact Assessment that fails NEMA review does not just cost money it delays projects by months and erodes stakeholder confidence. Drawing on our experience conducting over 40 EIAs across Kenya, we outline the five most common reasons EIA submissions are returned for revision, and the preparation standards that eliminate them.
• Designing Rural Access Roads in Kenya: Why Drainage Gets Projects Right or Wrong - Poor drainage is the primary cause of premature failure in Kenya's rural road network. In this technical overview, we examine the drainage design principles that separate roads that last from roads that wash out in the first long rains — drawing on the Kenya Roads Design Manual, the Low Volume Sealed Roads standard, and lessons from projects across the Rift Valley and Central Kenya.
• Flood Risk Mapping in Kenya: Combining GIS and Hydrological Modelling to Protect Communities - Kenya experienced some of its most damaging floods in decades during the 2024 long rains season, displacing over 200,000 people and destroying critical infrastructure. Effective flood risk management starts with knowing where, and how severely, floods are likely to occur. This article explains how GIS-based catchment analysis and hydrological modelling combine to produce flood risk maps that support both long-term spatial planning and emergency preparedness.
• Rapid Damage Assessment After Disasters: How Satellite Imagery Cuts Response Time from Weeks to Days - Traditional post-disaster damage assessment — teams of engineers moving on foot or by vehicle through affected areas — is slow, dangerous, and frequently incomplete. Satellite-based rapid assessment, combining pre- and post-event imagery with AI-assisted damage detection, is transforming the speed at which humanitarian responders and government agencies can understand the scale and geography of disaster impacts. This article examines the methods, tools, and operational workflows that are making rapid satellite assessment a standard component of disaster response in East Africa.

Questions about working with Gensre

What does Gensre Engineering & Research do?

Gensre Engineering & Research is a Nairobi-based engineering consultancy. We provide land surveying and mapping, GIS and remote sensing, civil and structural engineering, environmental impact assessment, research and technical reporting, data dashboards and architectural visualisation, for government agencies, NGOs and private clients.

What makes Gensre different from other engineering consultancies?

One accountable team covers six disciplines: surveying, GIS, civil and structural engineering, environmental assessment, research and digital tools. Field data we collect once feeds design, assessment and reporting directly, every deliverable states its method and accuracy, and registered professionals sign off the work. You get engineering judgement backed by research-grade evidence.

Why does it help to have surveying, engineering, environmental and research work under one roof?

Fewer hand-offs. When separate firms survey, design and assess a project, data is re-checked, re-formatted and sometimes re-collected, and responsibility for errors is unclear. With Gensre the same coordinate framework, data and project lead carry through from the first survey to the final report, which reduces rework, keeps programmes tighter and gives you one point of contact.

How does Gensre make sure its work is accurate and reliable?

Surveys use survey-grade methods tied to Kenya's national geodetic reference frame, and our validated GNSS work reaches about ±2 cm horizontally. Analyses are validated against field observations, major studies pass a three-stage internal review, and design and statutory documents are checked and signed off by registered professionals before they are issued.

Which technology and software does Gensre use?

We use GNSS RTK receivers, total stations and drones (UAVs) in the field, and industry-standard software such as AutoCAD Civil 3D, ETABS, QGIS, ArcGIS Pro, Google Earth Engine, Python and R, among others. Tools are chosen to suit each project, and we can work in the platforms, standards and file formats your team already uses.

Can you work with our existing data, standards and reporting formats?

Yes. We take in existing surveys, drawings, GIS layers and datasets, check their quality, and work to your CAD standards, coordinate system, templates and donor or regulatory reporting formats, so our outputs fit straight into your systems.

Where does Gensre work?

We are based in Nairobi and work across Kenya, East Africa and beyond. Our projects range from county-level surveys and nationwide mapping programmes in Kenya to urban road alignment surveys in Mogadishu, Somalia.

Who are Gensre's clients?

We work with national and county government agencies, development partners and NGOs, and private developers, contractors and businesses that need reliable survey data, engineering design or environmental and research evidence.

Are Gensre's professionals registered?

Yes. Our team includes practitioners registered with the Engineers Board of Kenya (EBK) and the Land Surveyors Board (LSB), and NEMA-registered environmental experts, across six disciplines.

How do I start a project or get a quote from Gensre?

Send us a short description of your site, scope and timeline through the contact form, book a consultation online, call +254 111 598 989 or message us on WhatsApp. A specialist from the right discipline reviews every brief and replies with a clear proposal covering methodology, deliverables, programme and fees.