Top Quantity Surveying Firms in Kenya: QS vs Surveyor

Openmaps

Sat Jun 13 2026

Top Quantity Surveying Firms in Kenya: QS vs Surveyor

Many people search for "top survey firms in Kenya" when they actually mean two very different professions. Some are looking for land surveyors who confirm boundaries, beacons, topographic data, subdivision, engineering setting out, drone surveys, utility mapping, and GIS. Others are looking for quantity surveyors who manage construction costs, bills of quantities, tender documentation, valuations, contract administration, and project cost control.

Both professions are important, but they do not do the same work. A land surveyor answers the land and measurement question: where is the land, what are its boundaries, what are its levels, what is on the site, and where should construction be set out? A quantity surveyor answers the cost and contract question: what will the project cost, how should it be tendered, how are payments valued, and how can the client control construction expenditure?

This article explains how to choose a quantity surveying firm in Kenya, how QS differs from land surveying, which regulator to check, and when a developer needs both a quantity surveyor and a land surveying or geospatial firm such as Openmaps.

Joshua Irungu Mwaura, CEO of Openmaps, Registered Surveyor, MSc GIS & Remote Sensing, and BSc Geomatic Engineering & Geospatial Information Systems, First Class Honours, explains:

"Developers often need both professions. A quantity surveyor helps control construction cost. A land surveyor helps ensure the project is designed and built on the right land, at the right levels, and in the right position."

Quick answer

The top quantity surveying firm for your project is the one that is properly registered, experienced in your building type, transparent on scope, strong in cost planning, familiar with procurement and contract administration, and able to work well with architects, engineers, project managers, land surveyors, and developers.

There is no single official "top 5 QS firms in Kenya" ranking that every client should rely on. For verification, check the Board of Registration of Architects and Quantity Surveyors, known as BORAQS. Its website provides registers for quantity surveyors and quantity surveying firms. The Architectural Association of Kenya also includes quantity surveyors among its built-environment professional chapters.

If your project needs land boundaries, topographic survey, utility mapping, setting out, drone mapping, GIS, or land due diligence, you need a land surveyor or geospatial firm such as Openmaps, not only a QS firm.

Important definitions

Quantity surveyor

A quantity surveyor is a construction cost and contract professional. A QS helps estimate costs, prepare bills of quantities, advise on procurement, evaluate tenders, value works, assess variations, monitor costs, and support contract administration.

Quantity surveying firm

A quantity surveying firm provides QS services to clients, developers, contractors, institutions, architects, engineers, and project managers. Its services usually focus on cost planning, tendering, valuations, contracts, and financial control of construction projects.

Land surveyor

A land surveyor measures and interprets land, boundaries, site features, levels, beacons, control, and survey records. In Kenya, cadastral survey work is regulated under the Survey Act and connected to licensed surveyor responsibility.

Topographic survey

A topographic survey maps levels, contours, buildings, trees, roads, drainage, utilities, fences, walls, and site features. It is usually needed before design.

Bill of quantities

A bill of quantities is a document prepared by a quantity surveyor that describes and quantifies construction works so contractors can price the project and the client can manage costs.

Cost plan

A cost plan is an estimate or structured budget that helps a client understand likely project cost at different design stages.

Setting out

Setting out is the land survey process of transferring design positions from drawings to the ground for construction.

Why people confuse QS and land surveying

01. Both use the word surveyor

The word "surveyor" appears in both titles, but the professions are different. Quantity surveyors survey cost. Land surveyors survey land.

02. Both work on construction projects

A building project may need a land surveyor, quantity surveyor, architect, structural engineer, civil engineer, MEP engineer, project manager, and contractor. Clients sometimes assume one professional can do everything.

03. Both can affect project cost

A quantity surveyor controls construction cost directly. A land surveyor affects cost indirectly by preventing design mistakes, wrong boundaries, level errors, drainage surprises, encroachment, and setting-out mistakes.

04. Search results mix the professions

Online searches for "survey firms in Kenya" may show land surveyors, quantity surveyors, GIS companies, valuation firms, engineering surveyors, and construction consultants together. Clients need to separate the service they actually need.

What a quantity surveyor does

01. Feasibility cost advice

A QS can help a client understand whether a proposed project budget is realistic before detailed design.

02. Cost planning

The QS tracks cost as design develops. This helps the client avoid designs that exceed budget.

03. Bills of quantities

The QS prepares bills of quantities for tendering, pricing, valuation, and cost control.

04. Tender advice

A QS can support tender documentation, contractor pricing comparison, tender analysis, and procurement strategy.

05. Interim valuations

During construction, the QS helps value work done and advise on payments to the contractor.

06. Variations and claims

The QS reviews cost changes, variations, claims, and contract cost implications.

07. Final account

At project close-out, the QS helps settle final costs and financial records.

What a land surveyor does

01. Boundary confirmation

The land surveyor confirms parcel boundaries and beacon evidence using survey records and field measurements.

02. Topographic survey

The land surveyor maps levels and site features so architects and engineers can design accurately.

03. Land due diligence

The surveyor checks whether the land shown on the ground matches title and survey evidence, helping buyers avoid wrong-plot and boundary problems.

04. Engineering setting out

The surveyor transfers design positions to the ground so buildings, roads, walls, drains, and utilities are built in the right place.

05. Utility mapping

The surveyor or geospatial team maps visible and detectable utilities to support design, safety, maintenance, and construction.

06. Drone and GIS mapping

The surveyor may use drone imagery, GIS, remote sensing, and geospatial data to support site planning, monitoring, and decision-making.

When you need a QS firm

01. You need a construction budget

Hire a QS when you need to know what a building, estate, school, hospital, warehouse, hotel, apartment block, road-related structure, or institutional project may cost.

02. You need bills of quantities

If contractors will price the work, a QS can prepare documents that support structured tendering and cost comparison.

03. You need tender evaluation

A QS can help evaluate contractor bids and identify pricing risks.

04. You need payment valuation

During construction, a QS can help value completed work and advise on payment certificates.

05. You need cost control

If the project is growing beyond budget, a QS helps track, explain, and control cost movements.

When you need Openmaps

01. Before buying development land

Openmaps can confirm whether the parcel shown on the ground matches documents, survey records, beacons, occupation, access, and site reality.

02. Before architectural design

Openmaps can prepare a topographic survey showing levels, contours, roads, drainage, utilities, fences, walls, trees, and buildings.

03. Before construction

Openmaps can confirm boundaries, establish control, and support engineering setting out.

04. During construction

Openmaps can support setting out, as-built surveys, drone progress mapping, utility mapping, and GIS-ready site records.

05. For land and geospatial intelligence

Openmaps can combine land survey, GIS, drone survey, remote sensing, utility mapping, and spatial analysis to support developer decisions beyond cost alone.

When developers need both

01. Buying land for apartments in Kiambu

The land surveyor confirms the parcel, beacons, access, levels, drainage, and site features. The QS estimates project cost, prepares cost plans, and advises whether the development budget is realistic.

02. Building a school in Kajiado

Openmaps can map the site, confirm boundaries, check topography, and support utility planning. The QS can estimate classrooms, finishes, services, preliminaries, and contractor costs.

03. Developing a warehouse in Athi River

The land surveyor confirms site levels, access, drainage, boundary limits, and setting-out control. The QS manages cost estimates, tendering, valuations, and variations.

04. Constructing apartments in Nairobi

The land surveyor helps avoid boundary and setting-out errors. The QS helps prevent cost overruns and manages contract payments.

How to choose a quantity surveying firm in Kenya

01. Check registration

Start with BORAQS. The Board describes itself as the regulator of professionals in architecture and quantity surveying in Kenya and provides registers for quantity surveyors and quantity surveying firms.

02. Check project experience

A QS firm that handles residential apartments may not be the best for a hospital, industrial plant, hotel, road-related project, school, or public-sector procurement assignment.

03. Ask for scope

Clarify whether the QS will provide feasibility estimate, cost plan, bill of quantities, tender analysis, contract advice, interim valuations, variation review, final account, or full cost management.

04. Ask about procurement experience

Public-sector, donor-funded, institutional, private developer, design-and-build, and contractor-led projects can require different procurement knowledge.

05. Confirm coordination

The QS should be able to work with the architect, engineers, project manager, land surveyor, client, contractor, and lender.

06. Ask about reporting

Good QS reporting should be clear, regular, and decision-focused. The client should understand cost risks early.

How to choose a land surveyor for the same project

01. Verify licensing

For boundary, beacon, subdivision, cadastral, or land-registration-related work, verify the licensed surveyor through the Land Surveyors' Board.

02. Match scope to decision

A developer may need boundary confirmation, topographic survey, drone mapping, utility mapping, setting out, GIS, or land due diligence. Each has a different scope.

03. Ask for usable deliverables

Architects and engineers may need CAD, GIS, contours, control points, photos, drone outputs, and clear notes. The survey output must be usable by the design team.

04. Check field method

Ask how the surveyor will collect data, what equipment will be used, and how field data will be checked.

05. Ask what happens after the survey

A good land surveyor explains findings, risks, and next steps, not just coordinates.

Red flags when choosing QS or survey firms

Red Flag 1. No registration or professional responsibility

For QS work, check BORAQS registration. For land survey work, check the Land Surveyors' Board.

Red Flag 2. Vague scope

If the firm cannot explain what it will deliver, the client may later discover important services were excluded.

Red Flag 3. Very low quote

Low fees may exclude proper records review, site visits, reporting, cost analysis, or professional review.

Red Flag 4. No coordination with other consultants

Development projects require coordination. A QS or land surveyor working in isolation can miss critical issues.

Red Flag 5. Treating drawings as ground truth

Design drawings are not a substitute for site survey. A QS needs design information, but the design team needs accurate site data first.

Kenya examples

Example 1. Apartment site in Ruaka

The client asks a QS for construction cost, but the site has not been surveyed. Openmaps first prepares topographic survey and boundary confirmation. The QS then prepares a more realistic cost plan using better site information.

Example 2. Petrol station site in Nakuru

The land surveyor checks boundaries, levels, access, drainage, and utility context. The QS estimates construction cost, specialist works, preliminaries, and procurement risk.

Example 3. School project in Kisumu

The QS prepares a budget and bill of quantities. Openmaps supports topographic survey, setting out, and as-built verification.

Example 4. Warehouse project in Athi River

The QS monitors contractor payments and variations. The land surveyor confirms slab positions, drainage levels, road access, and as-built data.

FAQs

What is the difference between a quantity surveyor and a land surveyor?

A quantity surveyor manages construction cost, procurement, bills of quantities, valuations, and contracts. A land surveyor measures land, boundaries, levels, site features, beacons, and construction positions.

What are the top 5 QS firms in Kenya?

There is no single official top 5 ranking that applies to every project. Use the BORAQS register, project experience, scope clarity, client references, and sector fit to choose.

Who regulates quantity surveyors in Kenya?

The Board of Registration of Architects and Quantity Surveyors, BORAQS, regulates architects and quantity surveyors in Kenya.

Who regulates land surveyors in Kenya?

The Land Surveyors' Board regulates licensed land surveyors under the Survey Act.

Does Openmaps provide quantity surveying?

Openmaps is a surveying, mapping, GIS, and geospatial consulting firm, not a quantity surveying firm. Openmaps supports land, site, boundary, topographic, drone, utility, engineering survey, and geospatial intelligence work.

Do I need a QS before buying land?

Usually, the land surveyor and advocate come first for land purchase due diligence. A QS becomes more important once you are evaluating development cost, tendering, or construction.

Do I need a land surveyor before hiring a QS?

For development projects, it is wise to obtain land survey and topographic information early. A QS can then prepare cost advice based on more accurate site and design information.

Can one firm provide both QS and land survey services?

Some multidisciplinary firms may coordinate both, but the professions remain distinct. Check the professional registration and responsible person for each service.

Conclusion

Quantity surveyors and land surveyors both protect development projects, but they protect them in different ways. A quantity surveyor protects the budget, tendering, valuations, variations, and final account. A land surveyor protects the land decision, site data, boundaries, levels, setting out, and spatial evidence.

If you are planning a project in Kenya, choose your QS firm through BORAQS registration, project experience, clear scope, and cost-control capability. Choose your land surveyor through licensing, records review, field method, usable deliverables, and ability to explain land risk.

Openmaps supports the land, mapping, GIS, drone, utility, topographic, and engineering survey side of development so that architects, engineers, quantity surveyors, contractors, and clients can work from reliable site evidence.

Author section

Expert contributor: Joshua Irungu Mwaura
Role: CEO, Openmaps; Registered Surveyor
Qualifications: MSc GIS & Remote Sensing; BSc Geomatic Engineering & Geospatial Information Systems, First Class Honours

Joshua Irungu Mwaura is a Kenyan registered surveyor and geospatial professional with expertise in cadastral surveys, boundary surveys, topographic surveys, GIS, remote sensing, drone mapping, utility mapping, engineering surveys, property advisory, and geospatial intelligence. Through Openmaps, he helps developers and landowners understand when they need land survey evidence alongside cost, design, and construction advice.