Unclog Drain & Rooter locates and maps all buried utilities and underground pipes across Nairobi and Kenya – drainage, water mains, power, telecom, and gas – using ground-penetrating radar, CCTV sonde tracing, and GPS. GPS-accurate CAD drawings and GIS datasets delivered for construction, property, and infrastructure clients.
At Unclog Drain & Rooter, we see the consequences of excavating without utility mapping every year across Nairobi and Kenya – burst water mains, severed power cables, fractured drainage pipes, and damaged telecommunications ducts that cause project delays, costly repairs, and serious safety incidents. Most properties and construction sites in Kenya have no accurate records of what is buried and where. Unclog Drain & Rooter fills this dangerous information gap before the first excavator bucket enters the ground.
Striking a live power cable during excavation is a potentially fatal incident. Unclog Drain & Rooter utility mapping identifies the position and depth of all electrical services before any digging begins – protecting workers from the most serious excavation hazard in Kenya’s construction industry.
Striking an unmarked water main, drainage pipe, or telecommunications duct causes immediate work stoppage, emergency repair costs, utility provider charges, and programme delays that cost multiples of the mapping survey fee. Unclog Drain & Rooter pre-excavation mapping eliminates this risk entirely.
Architects and engineers cannot design foundations, piles, trenches, or service routes accurately without knowing what is already buried. Unclog Drain & Rooter utility mapping provides the confirmed sub-surface information needed for accurate construction design and conflict analysis.
Before demolishing any structure in Kenya, all underground services must be identified, isolated, and made safe. Unclog Drain & Rooter mapping confirms the position of all incoming and outgoing services to a building, enabling safe demolition planning and contractor briefing.
Nairobi City County building approvals increasingly require evidence that existing underground services have been located and that new works will not conflict with them. Unclog Drain & Rooter produces the utility survey drawings required for NCC and NEMA compliance submissions.
Property managers, estate teams, and facilities engineers need accurate records of all underground services for maintenance planning, fault response, and capital works programming. Unclog Drain & Rooter creates the definitive underground asset register that properties across Kenya lack.
Unclog Drain & Rooter provides utility and underground pipe mapping for every project type and scale across Kenya. Select your application to see the full scope of what is included.
Unclog Drain & Rooter deploys four complementary survey technologies – selected based on service type, depth, ground conditions, and site constraints. No single method locates all utility types in all conditions; Unclog Drain & Rooter always selects the optimal combination for each project.
Unclog Drain & Rooter GPR equipment emits radar pulses that penetrate the ground and reflect off buried objects – identifying voids, pipes, cables, slabs, and tanks regardless of material (plastic, concrete, ceramic, metal). GPR is the only method that locates non-metallic services including uPVC drainage pipes, HDPE water mains, and fibre optic ducts. Depth penetration reaches 3 metres on dry sandy or gravelly soils; performance is reduced in wet clay soils common in Nairobi, which is why Unclog Drain & Rooter always combines GPR with complementary methods for the highest confidence in all Kenya ground conditions.
Electromagnetic (EM) locators detect the electromagnetic field generated by metallic pipes and cables – water mains, gas pipes, steel drainage, electrical cables, and communication ducts with metallic sheathing. Unclog Drain & Rooter uses both passive detection (picking up live AC signals) and active induction (applying a signal to the service and tracing it) to maximise detection of metallic buried utilities to depths of 5 metres with high positional accuracy. EM locating is standard practice before any excavation across Kenya and is particularly effective in the clay soils of Nairobi where GPR performance is constrained.
Unclog Drain & Rooter inserts a sonde transmitter inside a CCTV push-rod camera and feeds it through drainage and sewer pipes. The sonde emits a signal that is detected from the surface, allowing the pipe’s exact plan position and depth to be recorded using GPS at every point. This method provides the highest accuracy for drainage pipes in all ground conditions and produces data for CAD drawing production regardless of soil type, surface covering, or pipe depth. Sonde tracing is Unclog Drain & Rooter’s primary method for drainage pipe mapping across Kenya.
All Unclog Drain & Rooter located service positions are recorded using GPS to sub-metre accuracy. Surface access points – manholes, valve boxes, meter chambers, and cable pits – are surveyed and geo-referenced. These GPS coordinates are then used to produce accurate CAD drawings and GIS datasets in AutoCAD, Civil 3D, QGIS, or ArcGIS format. Unclog Drain & Rooter drawings show every located service with its confirmed position, estimated depth, and material type where known – providing the definitive underground record for every project across Kenya.
Unclog Drain & Rooter maps the full range of buried utility services found on Kenya properties and infrastructure sites. Each service type requires a specific detection approach – our multi-method surveys ensure the highest possible detection confidence for every type on your site.
Foul sewer laterals and mains, surface water stormwater pipes, inspection chambers, and soakaway connections. Unclog Drain & Rooter CCTV sonde tracing provides the highest accuracy for all drainage pipe types.
NCWSC water mains, private supply pipes, irrigation mains, fire suppression supply lines, and borehole delivery pipes in all materials including HDPE, uPVC, copper, and galvanised steel.
Kenya Power HV and LV electricity distribution cables, private generator supply cables, photovoltaic DC cables, and earthing grid conductors – all located with EM equipment before any excavation.
Safaricom, Telkom, and other telecom provider duct networks, fibre optic cables, private LAN and data cables, and CCTV system cable routes in metallic and non-metallic conduit and ductwork.
LPG distribution pipes, natural gas supply lines, and industrial gas pipelines. Unclog Drain & Rooter gas pipe location surveys use EM tracing and ground detection to confirm routes before any excavation near gas infrastructure.
Garden and agricultural irrigation networks, pool and water feature supply pipes, industrial process water pipes, and cooling water distribution systems – all mapped using GPR and sonde tracing.
Unclog Drain & Rooter utility and underground pipe mapping is not only for large infrastructure projects. These eight scenarios arise regularly on residential, commercial, and industrial sites across Kenya – and in every case, the mapping cost is a fraction of the damage and delay costs if buried services are struck without it.
Before trenching for foundations, pipes, cables, or landscaping – Unclog Drain & Rooter mapping confirms what is buried in the excavation zone. This is the most common and highest-value application of utility mapping across Kenya’s construction sector.
Structural engineers and geotechnical consultants require confirmed underground service positions before designing foundations and piling layouts to ensure structural elements do not conflict with buried utilities.
Demolition contractors in Kenya must identify and isolate all underground services before any structure is demolished. Unclog Drain & Rooter mapping confirms incoming service routes and positions for safe isolation and demolition planning.
Buyers of commercial and industrial properties increasingly commission utility mapping surveys as part of due diligence – confirming that underground services are where they should be and identifying any unauthorised or unknown buried infrastructure.
Before installing new drainage, water supply, power, or telecoms on an existing site, the existing underground services must be mapped to design conflict-free routes for new trenches and services.
Nairobi City County building approvals require existing services to be shown on submitted drawings. Unclog Drain & Rooter utility survey drawings provide the confirmed services layer required for NCC-compliant planning submissions.
Property managers and estate teams need accurate underground service records for emergency response, maintenance planning, and capital expenditure budgeting. Unclog Drain & Rooter creates the definitive underground asset register that most Kenya properties currently lack.
When a drainage fault cannot be located through CCTV survey alone – because there are no accessible inspection chambers or the pipe route is completely unknown – Unclog Drain & Rooter combines sonde tracing and GPR to locate the pipe and diagnose the fault.
Unclog Drain & Rooter follows a structured five-stage process for every utility mapping commission – from initial briefing and desktop research through to final CAD drawing issue and client sign-off.
Every Unclog Drain & Rooter utility mapping project produces professional, GPS-accurate deliverables formatted for the specific use – whether that is a construction safety brief, a property transaction, a planning submission, or an asset management programme.
GPS-accurate CAD plan showing all located underground services with colour-coded service type lines, depth annotations, material notes where confirmed, access point markers, and confidence level indicators. Produced to NCC drawing standards and accepted without re-drawing.
Fully attributed GIS shapefile with GPS-coordinated service polylines, point data at access locations, and a feature attribute table containing service type, material, diameter, depth, survey method, confidence level, and survey date. Compatible with QGIS, ArcGIS, and AutoCAD Map.
Written report documenting the survey methodology, equipment used, limitations in each survey area, confidence level for each located service, and recommendations for any additional investigation needed in areas where service detection was inconclusive due to ground conditions.
For projects where new construction has been designed, Unclog Drain & Rooter overlays the utility survey data onto the proposed construction drawings and identifies all conflicts and minimum clearance violations – with specific recommendations for each conflict point.
All located service positions are marked on the ground using colour-coded spray paint or stakes following the standard Kenya utility marking convention. A photographic record of all surface marks is provided for reference during excavation.
A tabular schedule of GPS coordinates for all located service positions – manholes, valve chambers, meter boxes, cable pits, and key pipe bend points – in local coordinate system and WGS84 latitude/longitude for import into any site survey or construction management system.
Unclog Drain & Rooter fixed-price fees are confirmed after an initial free briefing. Indicative starting fees are shown below – complex sites and large programmes are quoted individually after a site briefing at no charge.
* All fees are fixed-price and confirmed after a free initial briefing. Complex ground conditions, deep services, restricted access, hazardous areas, and remote locations are quoted individually. Unclog Drain & Rooter does not charge for initial project briefings or indicative fee proposals.
Unclog Drain & Rooter utility mapping teams operate across Nairobi and Kenya with full equipment mobilisation capability to all major towns. Type your location to confirm coverage for your project.
Real feedback from developers, contractors, facilities engineers, and property managers who commissioned Unclog Drain & Rooter underground mapping surveys across Kenya.
“We had a GPR and sonde survey from Unclog Drain & Rooter before piling on our Westlands commercial development. The survey revealed a water main that was not shown on any of the utility provider drawings. Without that survey we would have struck it on day one of piling. Potentially saved us weeks and hundreds of thousands in repairs.”
“Unclog Drain & Rooter mapped the entire underground utility network of our 25-hectare Karen estate – drainage, water mains, power, and telecoms. The GIS dataset they delivered is now the foundation of our entire facilities management programme. Excellent quality and delivered on time.”
“Our NCC submission required an existing services drawing that we simply did not have. Unclog Drain & Rooter conducted the utility survey, produced the NCC-format CAD drawing in five working days, and our planning application went through first time. Essential service for any developer in Nairobi.”
Unclog Drain & Rooter maps what is underground before it becomes a costly problem. GPR, EM, CCTV sonde, and GPS – deployed across Nairobi and Kenya. Fixed fees confirmed after a free briefing. CAD and GIS deliverables to NCC standards.
Tell Unclog Drain & Rooter about your project and we will respond within one working day with an indicative fee and programme.
Honest answers to the questions developers, contractors, and facilities managers ask Unclog Drain & Rooter before commissioning a utility mapping survey in Kenya.
Underground utility mapping is the process of locating, identifying, and recording all buried services on a site – including drainage pipes, water mains, electricity cables, telecommunications ducts, gas pipes, and irrigation lines. Unclog Drain & Rooter uses a combination of ground-penetrating radar, electromagnetic locating, CCTV sonde tracing, and GPS to locate services and produce GPS-accurate CAD drawings and GIS datasets. The survey covers all utility types detectable by the deployed methods and includes a report with confidence ratings for every located service.
Unclog Drain & Rooter utility mapping starts from KES 35,000 for a single residential property survey covering all utility types. Commercial site surveys up to 1 hectare start from KES 95,000. Large estate, infrastructure corridor, and industrial site surveys are quoted individually after a free initial briefing based on site area, access conditions, service types of interest, and required deliverable formats. All fees are fixed-price and confirmed before fieldwork begins – Unclog Drain & Rooter does not charge for briefing discussions or indicative proposals.
GPR can locate all pipe materials including uPVC, HDPE, concrete, clay, and metal – as long as there is a sufficient contrast between the pipe material and the surrounding soil, and the soil conditions allow adequate radar penetration. Performance is best in sandy and gravelly soils and is significantly reduced in wet clay soils, which are common in Nairobi. This is why Unclog Drain & Rooter always combines GPR with electromagnetic locating and CCTV sonde tracing – the three methods together provide the highest overall confidence in Kenya’s varied soil conditions. No single method guarantees 100% detection of all services in all conditions.
Unclog Drain & Rooter GPS coordinates are accurate to sub-metre position (typically plus or minus 30 to 50 cm in plan). Depth estimates from GPR are typically accurate to plus or minus 15 to 20% of the actual depth in good conditions – meaning a pipe confirmed at 1.0 m depth may actually be between 0.8 and 1.2 m deep. CCTV sonde tracing for drainage provides the highest accuracy available – plan position to sub-metre GPS and depth accurate to plus or minus 10 cm. All Unclog Drain & Rooter drawings show confidence levels for every located service so users understand the degree of certainty associated with each service position.
A single residential property GPR and sonde tracing survey typically takes 4 to 8 hours on site. A commercial site up to 1 hectare typically takes 1 to 2 days of fieldwork. Drawing production and report writing takes a further 3 to 5 working days after field data is quality-checked. Unclog Drain & Rooter can accommodate urgent programmes for time-critical pre-excavation surveys – same-week turnaround is available for urgent projects. Programme timelines are confirmed at the briefing stage for all projects.
Unclog Drain & Rooter delivers utility mapping drawings in AutoCAD DWG and PDF as standard. GIS datasets are delivered as Shapefile (SHP), GeoJSON, Google Earth KMZ, and AutoCAD Map DWG with full attribute tables. Coordinate schedules are delivered as Excel and CSV. For clients with specific CAD layer naming conventions or GIS schemas, Unclog Drain & Rooter can format deliverables to match the client’s standard – please specify requirements at the briefing stage.
Yes. Unclog Drain & Rooter utility mapping teams and equipment can be mobilised to any location in Kenya. Standing team coverage is available in Nairobi and its satellite towns. For projects in other Kenya cities including Mombasa, Nakuru, Kisumu, and Eldoret, Unclog Drain & Rooter schedules mobilisation with sufficient lead time – typically 5 to 10 working days for regional cities. For remote or rural locations, mobilisation costs and programme requirements are confirmed at the briefing stage. Call +254746088030 or submit the brief above to discuss your specific location.
Yes. Unclog Drain & Rooter produces utility survey drawings to Nairobi City County and Kenya county council drawing submission standards. The drawings include all required elements for planning submissions – title block, drawing number, north point, scale bar, drawing date, revision history, and service legend. They are accepted by NCC as the existing services layer required for development application drawings. Where utility survey drawings need to be overlaid on a topographic survey for a planning submission, Unclog Drain & Rooter can combine the two datasets into a single composite drawing.
