Construction Cost Control

Backcharges in construction contracts explained: notice and cure procedures, correction by others, cost evidence, IPC deductions, disputes, defects periods, and how FIDIC, AIA, NEC, and JCT address construction cost recovery.

Use this construction Backcharge Log template to track notices, cure periods, approved costs, disputes, Subcontractor IPC deductions, remaining balances, reversals, and closure without duplicating deductions.

Use this Backcharge Cost Breakdown Template and Calculator to itemize remedial labour, materials, plant, specialist work, testing, adjustments, credits, and tax. Separate estimates from actual costs, prepare a final cost summary, and support a Backcharge Notice, Log, or IPC deduction.

Understand provisional sums and nominated subcontractors in construction contracts, including FIDIC and JCT treatment, planning gaps, extension of time evidence, LD exposure, design-execution overlap risk, downloadable tools, and practical contract administration guidance.

Learn how Prime Cost sums affect contractor risk, margin exposure, and BOQ pricing strategy. Includes real construction examples, split vs composite PC items, and OH&P placement guidance.

Learn how construction retention works with clear formulas, bond types, accounting entries, and examples. Ensure cash flow and quality in your projects.

Learn what a requisition form is, how it is used for materials - Purchase Requisition - and services, how it protects budget before PO or work order commitment, and which forms and logs help contractors track requests, allocation, and actual usage.

Learn what a Work Breakdown Structure (WBS) is, how to create one, how it differs from activity codes, cost codes, BOQs, and material codes, and how it is used in planning, reporting, budgeting, contracts, and construction project controls.

Learn how to accurately predict construction project cash flows using mathematical models such as polynomial and exponential curves. Discover essential adjustments, including advance payments, retention deductions, payment delays, and work-in-progress billing, to align predicted work with real cash outflows.

Download two construction backcharge notice templates in Excel and PDF: a Notice to Correct and Intent to Backcharge issued before corrective work, and a Final Backcharge Cost Notice issued after costs are incurred.

JCT backcharges explained under JCT 2016 and 2024: instructions, defective work, Rectification Period remedies, work by others, appropriate deductions, Pay Less Notices, subcontract deductions, valuation, and dispute rights.

NEC backcharges explained under NEC4 ECC and ECS: Defect notification, access, defect correction periods, Clause 46 assessments, correction by others, Defined and Disallowed Cost, payment recovery, and Contractor or Subcontractor objections.

Learn how to show, dedu a Subcontractor IPC, with a worked payment example, balance calculation, document checklist, and practical controls.

Learn how to challenge an improper construction backcharge by testing contractual entitlement, notice, responsibility, right to repair, cost records, betterment, delay causation, IPC deductions, payment notices, and duplicate recovery.

Can an Employer appoint others and backcharge defect repairs during the Defects Liability Period? Learn how notice, access, correction periods, emergency work, cost assessment, payment deductions, and the original Contractor’s opportunity to repair apply.