Measurement, Estimation And Costing Of Building Works I

Building Technology · Level 6 · 3 Chapters

Compiled by: John Wachira

▣ What this unit covers

In this unit, you will be able to confidently interpret building drawings and measure elements with precision, preparing accurate bills of quantities that reflect real project needs. You will master the entire tendering process—from selecting the right method and preparing documents to evaluating bids and managing contracts—ensuring every step follows professional standards. By the end, you’ll skillfully handle variations and valuations, contributing to smooth, safe, and successful building projects that meet client expectations.

■ Where this takes you

Understanding how to measure, estimate and cost building works isn’t just about numbers on a page - it’s the backbone of every construction project you’ll see around Kenya, from a new school in Nakuru to a boutique hotel on the coast. Mastering these skills opens doors to roles where you turn designs into reality, keep projects on budget, and ensure everyone gets paid fairly.

Reading and measuring drawings - work on residential estates in Kiambu, commercial complexes in Nairobi’s Central Business District, or road-side kiosks in Eldoret, turning architects’ plans into precise on-site measurements.
Preparing Bills of Quantities (BOQ) and billing papers - support private developers building gated communities in Thika, or assist county governments constructing health centres in Machakos, by producing accurate BOQs that guide procurement and budgeting.
Abstracting and tender preparation - help NGOs or faith-based organisations that build schools in Turkana or water-treatment plants in Kisumu to compile tender documents that attract reliable contractors.
Choosing the right tendering method and evaluating bids - act as a tender officer for a real-estate firm developing mixed-use projects in Mombasa, ensuring the most competitive and capable contractors are selected.
Managing variations and valuing changes - on large infrastructure upgrades such as the Nairobi-Mombasa railway corridor, track and record approved changes so the project stays on schedule and the client’s budget is protected.
Preparing interim, penultimate and final payment certificates - work with construction firms in Nakuru or with community-based housing projects in Kitui to certify work completed, release payments on time, and maintain good relationships with subcontractors.
Day-work supervision and safety compliance - oversee site crews on multi-storey apartments in Westlands or on public school renovations in Garissa, ensuring work follows safety procedures and contract terms.
Freelance or consultancy opportunities - offer estimating and tender-management services to small contractors in rural towns, or set up your own quantity-surveying consultancy that helps startups secure financing for affordable housing schemes.

Every time a building rises, your expertise in measurement, costing and tendering will be the reason it stays on track, on budget, and delivers quality for the community. Keep sharpening these skills - you’re building the foundation for a thriving construction career across Kenya.