List the work hours, materials, transport, equipment, payment costs, and time spent quoting or travelling. Add the portion needed for business overhead and a sustainable margin. For variable jobs, identify the conditions that could change the estimate before quoting.
Before setting a figure, list direct job costs, preparation and travel time, overhead, tax obligations to check, and the margin needed to keep the service viable. Compare the scope—not only the total—with other providers where information is public. Test the calculation against a completed job and adjust if actual hours or materials routinely exceed the estimate. Do not copy an unverified market rate.
Separate owner pay from business costs in your calculation so the rate does not depend on unpaid labour.
Compare estimates with completed invoices and note where labour, travel, or materials differed. For unfamiliar work, arrange assessment rather than copying another provider's number. Check current tax and licensing obligations with a qualified adviser where relevant.
Review actual time and cost after each job. Do not present an example price as a universal Kenyan rate; state the location, date, and assumptions if you publish one. KobStore lets you explain fixed prices or quote factors on a public page; create yours.
