Unclog Drain & Rooter designs, installs, clears, and maintains stormwater drainage systems across Nairobi and Kenya. Emergency flood response, gully cleaning before the rains, new surface water systems, culvert clearing, and channel maintenance – all designed to keep water away from your property during Kenya’s peak rainfall seasons.
At Unclog Drain & Rooter, we respond to more stormwater-related emergencies during Nairobi’s long rains season (March to May) and short rains (October to December) than any other drainage category. Kenya’s rainfall intensity has increased significantly in recent years, and properties with inadequate or neglected stormwater drainage systems suffer flooded compounds, waterlogged foundations, damaged driveways, and interior water ingress that could be entirely prevented with the right system and maintenance.
Unclog Drain & Rooter stormwater systems direct rainwater away from foundations, walls, and floor slabs. Water pooling against a building causes damp penetration, plaster damage, and long-term structural weakening that is far more expensive to repair than the drainage that would have prevented it.
Unclog Drain & Rooter designs surface water systems that capture and convey rainwater at the rate it falls during peak storms. Without adequate drainage, compounds flood within minutes of heavy rainfall – disrupting daily life and damaging vehicles, landscaping, and property contents.
Uncontrolled surface water runoff across clay soils common in Nairobi and the surrounding counties creates concentrated flow paths that erode topsoil, expose foundations, and eventually cause slope instability. Unclog Drain & Rooter channel and swale design manages runoff velocity to prevent erosion.
Nairobi City County planning submissions and NEMA environmental impact assessments require surface water drainage strategies demonstrating that new development will not increase flooding risk to neighbouring properties. Unclog Drain & Rooter produces the compliant drawings and calculations required.
Flood damage claims are among the most expensive property insurance claims in Kenya. Unclog Drain & Rooter pre-rain season gully clearing and maintenance dramatically reduces flood risk – most insurance policies require evidence of maintained drainage for claims to be accepted.
Unclog Drain & Rooter designs stormwater systems that incorporate rainwater harvesting – directing roof and compound runoff into storage tanks for garden irrigation and non-potable use. In water-stressed Nairobi suburbs, this significantly reduces water costs during dry seasons.
Unclog Drain & Rooter provides stormwater drainage services across the full spectrum – from emergency clearing of blocked gullies during active flooding through to new system design and installation for major developments. Select your need to see what is included.
Unclog Drain & Rooter selects the most appropriate stormwater solution for each property – based on rainfall intensity, site gradient, soil type, available space, and connection to existing drainage infrastructure. Here are the primary system types we design and install across Nairobi and Kenya.
Pre-cast or in-situ concrete and uPVC gully pots capture surface water at low points and drain entry paths. Unclog Drain & Rooter spaces gullies based on catchment area and design rainfall – the most common and cost-effective solution for residential compounds across Nairobi.
Linear drainage channels installed along driveways, patios, and hardstanding areas collect water across their full length rather than at single points. Unclog Drain & Rooter installs polymer concrete and stainless steel channel systems that handle high flow rates during heavy downpours.
Perforated pipes surrounded by gravel aggregate allow collected stormwater to infiltrate into the subsoil. Unclog Drain & Rooter designs French drains based on percolation test results and soil analysis – an effective solution for properties where a direct discharge point is not available.
Excavated pits filled with granular aggregate or crate-type modular units that store and release collected stormwater to the ground. Unclog Drain & Rooter sizes soakaways using BRE Digest 365 percolation testing to ensure adequate capacity for design storm conditions in Kenya’s clay and red soil conditions.
uPVC and HDPE pipes collect runoff from multiple gullies and convey it to an approved outfall or soakaway. Unclog Drain & Rooter sizes all pipes using hydraulic calculations for the design rainfall intensity – preventing surcharging and surface flooding during peak storms.
Unclog Drain & Rooter integrates stormwater drainage with rainwater harvesting – routing roof water through first-flush diverters to storage tanks sized for garden and non-potable use. A cost-effective approach that manages stormwater and reduces water bills simultaneously, especially popular in Karen, Runda, and peri-urban Kenya.
Unclog Drain & Rooter attends stormwater drainage failures across Nairobi every rainy season – and most of them were preceded by warning signs visible months earlier. Identifying these before the rains begin means a planned fix rather than an emergency response.
Water standing in your compound, garden, or driveway for more than 30 minutes after rainfall has stopped indicates inadequate drainage capacity, blocked gullies, or poor grading directing water to low points with no exit route.
Surface water finding its way under doors, through air bricks, or through wall cracks during heavy rain confirms that the stormwater system is not intercepting and directing water away from the building effectively.
Gully pots that fill and overflow immediately when rain begins are blocked with silt and debris. Unclog Drain & Rooter pre-rain season cleaning restores full capacity before the problem occurs.
Damp rising from below floor level or on foundation walls in rainy season indicates that surface water is pooling against the building and penetrating through the foundation – a direct consequence of inadequate surface drainage grading.
Channels or ruts worn into soil surfaces by concentrated water flow indicate that surface water is not being captured and conveyed by the drainage system – it is instead running freely across the surface at high velocity.
Gully pots that you can see are filled with silt, leaves, or debris should be cleaned immediately. A gully that appears visually full will overflow at the first significant rainfall event.
Stormwater runoff leaving your property onto a neighbour’s land creates a legal liability in Kenya. Unclog Drain & Rooter can redesign and install systems that retain and discharge water within your boundary.
Stormwater gullies and channels that have not been professionally cleaned within the past 6 months are likely to be at reduced capacity. Unclog Drain & Rooter recommends cleaning twice per year – before both rain seasons.
Unclog Drain & Rooter recommends a seasonal maintenance programme aligned to Kenya’s two main rain seasons. Pre-rain cleaning and inspection is the single most cost-effective action a Nairobi property owner can take to prevent flood damage.
Unclog Drain & Rooter recommends completing these tasks before the long rains season (March to May) which brings Kenya’s highest intensity and most sustained rainfall.
The short rains season (October to December) can be intense despite being shorter. Unclog Drain & Rooter recommends a second pre-season maintenance visit before October.
Kenya’s dry season is the ideal time for Unclog Drain & Rooter to carry out new drainage installations and improvements while ground conditions allow efficient excavation.
If you experience flooding during active rainfall, Unclog Drain & Rooter emergency teams respond across Nairobi within 30 minutes to provide immediate relief.
Answer four quick questions for an instant, personalised Unclog Drain & Rooter recommendation for your stormwater drainage situation.
Unclog Drain & Rooter recommends the most cost-effective and appropriate solution for each specific flooding situation. This comparison helps you understand the options before our site assessment.
| Factor | Gully Clearing | New Gully Installation | French Drain or Soakaway | Full Stormwater System |
|---|---|---|---|---|
| Addresses existing blockages | Yes – primary purpose | No – adds new capacity | No | Yes – replaces or supplements |
| Adds new drainage capacity | Restores existing only | Yes | Yes – sub-surface disposal | Yes – designed for peak flows |
| Requires outfall connection | Existing connection used | Depends on connection | No – infiltrates to ground | Depends on design |
| Suitable for NCC planning submission | Maintenance only | Partially | With calculations | Full designed system |
| Typical completion time | Half to 1 day | 1 to 3 days | 1 to 3 days | 3 to 10 days |
| Relative cost | Lowest | Low to medium | Medium | Highest – most comprehensive |
| Addresses root cause of flooding | If blockage is the cause | If capacity is the cause | If infiltration is viable | Yes – comprehensive solution |
Unclog Drain & Rooter follows a structured five-stage approach to every stormwater drainage project – from emergency response through to permanent engineered solutions designed to last for decades.
Unclog Drain & Rooter flat-rate pricing is confirmed before every job. Toggle between standard and emergency rates below. No call-out fees. No hidden charges.
* Starting prices apply to standard-access residential and commercial sites in or near Nairobi. Large commercial sites, industrial drainage, NCC design submissions, and culvert or channel clearing programmes are priced individually after a site assessment. Emergency rates apply between 6 PM and 6 AM and on public holidays.
Unclog Drain & Rooter stormwater teams are pre-positioned across Nairobi for rapid deployment during and after rainfall events. Type your area to confirm coverage and response time.
Real feedback from homeowners, estate managers, and facilities teams who rely on Unclog Drain & Rooter to protect their properties from stormwater flooding across Nairobi.
“Our Karen compound flooded every long rains season for three years. Unclog Drain & Rooter surveyed the site, found that two gullies were directing water toward the house rather than away, and installed a new channel drain system. First rains season – zero flooding. Remarkable difference.”
“We had active flooding in our Westlands car park during a heavy rain event on a Friday. Unclog Drain & Rooter arrived in 35 minutes, jet-vacced the blocked culvert outlet, and had us clear in under two hours. The post-event report they provided helped us secure the insurance claim.”
“Unclog Drain & Rooter cleans our Kilimani estate stormwater gullies twice per year under a maintenance contract. Since starting three years ago, we have not had a single flooding complaint from any of our 56 residents. The pre-rain visit in February makes all the difference.”
Unclog Drain & Rooter clears, installs, and designs stormwater drainage systems across Nairobi and Kenya. Emergency response in 30 minutes. Pre-rain season maintenance contracts available. Fixed pricing with no hidden charges.
Tell Unclog Drain & Rooter about your stormwater problem and we will respond within 30 minutes with a confirmed appointment and flat-rate price.
Honest answers to the questions Nairobi property owners and estate managers ask Unclog Drain & Rooter about stormwater drainage solutions.
The most common causes Unclog Drain & Rooter identifies during flood investigations across Nairobi are: blocked gully pots and surface drains that cannot accept rainwater fast enough during peak storms; inadequate or missing drainage on paved and hardstanding areas; poor compound grading that directs water toward buildings rather than away; undersized drainage pipes that surcharge during heavy rain; blocked culverts and drainage channels filled with silt, debris, or vegetation; and loss of permeable ground to new paving reducing natural infiltration. Most flood incidents are caused by a combination of two or more of these factors, which is why a full site assessment by Unclog Drain & Rooter is the right starting point.
Unclog Drain & Rooter recommends cleaning stormwater gullies and surface drains at least twice per year in Nairobi – once in February before the long rains season (March to May), and once in September to October before the short rains (October to December). Properties surrounded by trees, located near construction sites with high dust generation, or on roads with significant clay soil runoff may benefit from quarterly cleaning. Blocked stormwater drains are the single most preventable cause of compound and property flooding across Nairobi, and pre-season cleaning costs a fraction of emergency flood response.
Unclog Drain & Rooter gully cleaning starts from KES 12,000 for up to 5 residential gullies. Full site stormwater clearing for a residential or commercial property starts from KES 35,000. New stormwater drainage installation starts from KES 85,000 for a residential site including design, supply, and installation. All pricing is flat-rate and confirmed before work begins. Annual pre-rain maintenance contracts offer discounts on repeat service rates and automatic scheduling before both rain seasons.
Yes. Unclog Drain & Rooter engineers design complete stormwater drainage systems for residential properties, commercial sites, industrial facilities, and new developments across Kenya. Our designs include a site assessment, hydraulic calculations to size pipes and gullies for the design rainfall, gully positions, pipe routes, soakaway or discharge design, and CAD drawings. For planning applications, Unclog Drain & Rooter produces NCC-compliant drainage drawings and a surface water drainage strategy report. All designs are fixed-price and quoted after a free site briefing.
A French drain is a trench filled with gravel aggregate containing a perforated pipe that collects and disperses surface water and groundwater into the surrounding subsoil. Unclog Drain & Rooter recommends French drains when a property has no accessible stormwater outfall connection, when soggy ground adjacent to a building needs to be dried out, or when the soil percolation rate is adequate to absorb the design runoff volume. French drains are sized based on percolation testing – Unclog Drain & Rooter conducts percolation tests on site before designing any infiltration-based drainage solution to ensure the system will work in Kenya’s clay and red soil conditions.
Yes. Unclog Drain & Rooter operates 24 hours a day, 7 days a week including during active rainfall events. Emergency flood response teams are pre-positioned across Nairobi with jet-vac equipment and temporary pumping capacity. Average dispatch time for emergency flooding calls across Nairobi is 30 minutes. The emergency rate applies between 6 PM and 6 AM and is confirmed before dispatch – there are no surprise charges. Post-flood drainage improvement reports documenting the cause and recommending permanent solutions are provided after every emergency callout.
After every emergency or reactive stormwater job, Unclog Drain & Rooter provides a written post-works report that identifies whether the flooding was caused by a blockage (resolved by clearing), inadequate drainage capacity (requiring new installation), poor site grading (requiring regrading works), or an undersized pipe (requiring upsizing). If the cause was a one-off blockage, pre-rain season maintenance will prevent recurrence. If the cause is a structural drainage deficiency, Unclog Drain & Rooter will propose the appropriate permanent engineered solution with a fixed-price quotation before any additional works are authorised.
For minor works within a property boundary – cleaning, repairing existing drains, or installing small gullies within your compound – no county council approval is typically required. For new connections to a public storm drain, culvert, or watercourse, Nairobi City County or the relevant county council approval may be needed depending on the scale and discharge location. Unclog Drain & Rooter advises on approval requirements as part of every stormwater design project and can prepare the required submission drawings and drainage strategy documentation where approvals are needed.
