A title deed does not automatically mean every square metre of a property can be built on.
Land next to a river, stream, lake, wetland or other water body can be affected by riparian reserve rules and environmental controls.
For a buyer, this is a survey and planning issue to investigate before purchase, not after architectural drawings are finished.
What is riparian land?
Riparian land is land next to a water body where use can be restricted to protect the watercourse, floodplain and surrounding environment.
Kenyan law and planning rules impose obligations around these areas even where the adjoining parcel is privately owned.
The practical consequence is simple: owning the title does not give unlimited development rights over a riparian reserve.
Is the setback always 30 metres?
Do not use one blanket number without checking the applicable rules and the site.
Kenya’s Physical and Land Use Planning regulations provide measurement rules for riparian reserves, including a range linked to the river width and highest water mark. The current State Department for Lands planning handbook also gives planning guidance for riparian reserves.
That means the correct boundary should be established from the actual watercourse, survey information and current planning requirements.
If the viability of the property depends on where the riparian line falls, engage the relevant professionals before buying.
Measure from the water, not from a seller’s fence
A wall or fence is not proof of the legal riparian boundary.
Neither is the fact that neighbouring buildings are close to the river.
The relevant measurement can depend on the high-water mark, river width, flood conditions and the applicable planning or environmental framework.
Why the title search is not enough
An official land search is useful for checking the register, but the register alone does not answer every planning and environmental question.
A parcel can be registered and still have development restrictions.
That is why property due diligence should combine:
- title and registry checks
- physical inspection
- survey work
- planning checks
- environmental checks where relevant
What should a buyer inspect?
If water is near the property, ask:
- where is the highest water mark?
- has a licensed surveyor identified the boundary?
- is there a mapped riparian reserve?
- does the property sit in a floodplain?
- has the county approved the intended land use?
- would the proposed building footprint intrude into the reserve?
- are there drainage channels or seasonal streams that are easy to miss in dry weather?
Visit during or shortly after the rainy season if drainage and flooding are material concerns.
What if there is already a building?
Existing construction is not proof that additional construction will be approved.
Ask for the development approvals and investigate the planning status rather than assuming “it has been there for years” settles the issue.
A buyer taking over a problematic structure can inherit an expensive problem.
Can you buy riparian land?
The issue is not simply whether a parcel can be registered or transferred.
The bigger question is whether the land can legally and practically be used for your intended purpose.
A large parcel with a river along one edge may still have plenty of usable land. A small parcel where the reserve cuts through the intended building area may be a very different purchase.
Where to verify the rules
The State Department for Lands publishes the Physical and Land Use Planning Handbook and planning regulations.
For a specific development, also check the relevant county planning authority and use a licensed surveyor or physical planner where necessary.
A site visit should include drainage
Buyers often check the road, power and nearby buildings but ignore water flow.
Look for:
- visible river or stream channels
- culverts
- low points
- erosion
- water marks
- swampy ground
- informal drainage paths
- neighbouring walls that divert water
These observations do not replace professional work, but they tell you which questions need answers.
Do not price the unusable portion as if it were buildable
If part of the parcel is constrained by a riparian reserve or flood risk, that affects how useful the site is.
Before agreeing a price, understand how much of the land can realistically support the use you have in mind.
The cheapest time to discover a riparian problem is before you buy.
