Procurement guide

How to compare contractor quotations on the same scope

A normalization worksheet for finding what each price includes, excludes or leaves uncertain before selecting a contractor.

Do not rank quotations until every bidder has the same area schedule, drawings, specification and inclusion list. Compare normalized cost, payment risk and unresolved scope—not headline PKR per square foot alone.

House plans and measuring tools prepared as the common basis for contractor quotations
Give each bidder the same drawing revision, area schedule and written measurement rule.

Build a comparison sheet before reading totals

Quotation normalization headings
HeadingQuestions to resolve
Document basisWhich drawing revision, specification and area schedule were priced?
ScopeAre excavation, foundations, RCC, masonry, waterproofing, sleeves, boundary walls and external works included?
MaterialsWho supplies cement, steel, bricks, sand, aggregate, water, formwork and testing?
Commercial termsAre taxes, transport, pumping, machinery, supervision and overhead included?
Price adjustmentIs the rate fixed, time-limited or subject to an escalation formula?
Measurement and paymentAre payments based on area, BOQ quantities, milestones or actual measured work?
Provisional itemsWhich amounts can change after award?
Time and responsibilityWhat are start, duration, extension, delay and defect obligations?

PEC's standard documents emphasize project-specific tender data, drawings, specifications, schedules and bills of quantities. A small residential job may use a simpler contract, but the same logic is useful: describe the work well enough that prices are comparable.

Estimator comparing three itemized contractor quotation sheets
Align quantities, inclusions, exclusions and commercial terms before comparing the totals.

A normalized comparison example

Bid A offers PKR 3,300/sq ft for 3,000 sq ft, apparently PKR 9.9 million. Bid B offers PKR 3,450/sq ft, apparently PKR 10.35 million. If Bid A excludes PKR 350,000 of pumping, testing and waterproofing included by Bid B, its normalized comparison becomes PKR 10.25 million. The difference is then PKR 100,000, not PKR 450,000.

Normalized price = quoted total + priced exclusions + comparable provisional allowances

Questions that expose hidden scope

  • What exactly completes the “grey structure” milestone?
  • Are foundations based on current structural drawings or an allowance?
  • Who pays for changes caused by revised drawings or soil conditions?
  • Are formwork, scaffolding, curing water, power, security and debris removal included?
  • How are material brands or grades approved and substituted?
  • What evidence supports each payment claim?
  • What happens to unused owner-supplied material and recoverable steel offcuts?
Residential grey structure with concrete frame and brick infill under construction
A price comparison should describe the same physical work and completion milestone.

Price is only one selection dimension

Review references you can verify, current workload, proposed supervision, programme realism, safety practice, quality records and willingness to document changes. Do not publish or rely on fabricated testimonials. Speak to prior clients directly and inspect completed or active work with permission.

Contract note

This guide is a comparison framework, not legal advice or a residential contract template. Have the final scope and contract reviewed for the project's value, risks and jurisdiction.

Questions people ask

Is the lowest per-square-foot rate the cheapest quotation?

Not necessarily. The rate may use a different covered area, exclude materials or services, shift price risk, or leave major items provisional.

What is a provisional sum?

It is an allowance for work or cost that is not fully defined at tender stage. Compare it separately because the final amount may change.

Should labour-only and material-inclusive bids be compared together?

Only after converting them to a common scope and adding the owner's separately purchased materials, logistics, testing, taxes and risk.

Sources and verification

  1. Pakistan Engineering Council — Bidding Documents ImplementationOfficial context for project-specific tender data, schedules, specifications, drawings and bills of quantities.
  2. Pakistan Engineering Council — Standard bidding document for civil worksContract-document context for rates, risks, contingencies and Bill of Quantities pricing.
  3. Pakistan Engineering Council — Building Code of Pakistan 2021National building-code context for safety, administration, structural work and the authority having jurisdiction.

Sources establish the technical context. Calculator planning assumptions remain separately labelled and should be checked for the specific project.