In brief
- A low tender often wins because extra work carries no agreed rate, so the client pays later.
- Compare the priced bill against the drawings and specification to find items the bidder left out.
- Ask the bidder to price every likely extra in writing, then compare adjusted totals instead of headline bids.
Contents
A low bid in Berbera usually wins on the total, not on the completeness of its variation pricing. The priced bill may carry rates for the advertised scope while extra work has no agreed basis. When the drawings change, or the ground turns out harder than assumed, the contractor names a price and the client has no earlier figure to compare it with. The saving at tender stage can disappear during the build.
How does variation pricing underbidding arise in Berbera?
It starts when a bidder prices the advertised scope tightly and leaves the likely extras unpriced. Tender documents may list works in broad items, so a contractor can cover the visible work and stay silent on the rest. Omitted costs sit outside the total: extra excavation, dewatering, backfill import, testing, temporary works, protection of adjacent property. Each of those conditions can trigger work that nobody priced. Ask the municipal engineer's office what drawings, borehole logs or site records it holds for the plot, and read the specification for what the bill of quantities does not mention. A gap between the two lists is where a variation begins.
What does unresolved extra work cost during the build?
When no rate exists, the contractor and the client negotiate under time pressure, and the work slows. The supervisor raises an instruction, the contractor asks for a price, the client seeks approval, and the site waits. A stalled pour or an open excavation carries its own damage: open excavations can slump after rain, reinforcement can sit exposed, and formwork can distort, so confirm the site's ground and weather conditions with the client. The final sum is agreed later, often from the contractor's own build-up, with no competitive check. Ask for a written build-up with labour, plant and material quantities, and compare it against the tender rates for similar work. If the contract allows the client to direct the method, check what it says about measurement and valuation before you rely on it.
How do you check variation pricing before you award?
Read the bill against the drawings, the specification and the site conditions, line by line. Ask two suppliers for written quotes on the main materials so you can test whether tender rates look realistic, and ask a laboratory for its rate if testing is in scope. Look for items that carry a lump sum with no measured quantity, items marked provisional, and any note that says rates cover the stated scope only. Walk a recent site with the bidder and ask how the previous extra work was priced and approved. Confirm that a rate exists for each likely change: excavation in rock, dewatering, concrete in hot weather, corrosion protection where the site exposure calls for it. Establish the site's exposure and ground conditions from the project's own records and borehole logs rather than from assumptions. Technical limits such as cover, mix ratios and curing durations are general practice, so confirm them against the project specification and the engineer.
What to do next
Before signing, list every item in the drawings and specification that has no rate in the priced bill, then ask the bidder to price each one in writing. Add those figures to the tender total and compare the adjusted totals, not the headline bids. Record the agreed rates, measurement method and approval step in the contract so a later instruction has a known basis.
Frequently asked questions
What is variation pricing underbidding in a Berbera tender?
It is a bid that looks low because the contractor priced the advertised scope and left likely extra work without an agreed rate. The client pays for those extras later, usually after negotiation rather than competition.
How do I compare bids fairly when totals differ?
Price the same list of likely extras for every bidder, add each figure to its tender total, and compare the adjusted totals. Ask each bidder to sign the priced list so the rates are on record.
Where can I check local site conditions before award?
Ask the municipal engineer's office what records it holds for the plot, request any ground or test records from the client, and walk a recent nearby site with the bidder to see how extra work was handled there.
Local reporting: this article is written for building work in Berbera and Somaliland. Ground conditions, prices and rules differ between places; confirm the details for your own site.