Case Study

Construction Accounts Payable Outsourcing: 45% Cost Savings and Same-Day Turnaround With 99.7% Accuracy

Client Snapshot

Industry:

Real Estate Development and Construction

Location:

Vancouver, Canada

Client Type:

Mid-market construction firm focused on high-rise concrete residential development

Service Scope:

Accounts Payable outsourcing (3-way match, invoice entry, vendor reconciliation, AP reporting); disbursements retained onshore

Key Highlights

Cost Savings:

45% ongoing reduction in AP cost structure

Cycle Time:

Same-day turnaround for invoice processing

Accuracy:

99.7% accuracy at scale

Throughput:

125 invoices per FTE per day

Client Background

The client is a well-known mid-market real estate development and construction company based in Vancouver, with strong expertise in high-rise concrete residential projects. Their Accounts Payable process was centralized but heavily manual and paper-driven, leading to high processing time, non-linear workflows, and approval delays across multiple construction sites.

The client engaged OHI to reduce costs, improve AP process flow, and create a flexible staffing model—without compromising construction-specific accounting requirements such as holdbacks, commitment invoices, and multi-tax code handling.

Business Challenge

A paper-based AP process across multiple job sites created approval delays, documentation gaps, and high cycle times.

Paper-Driven, Site-Dependent Workflows

Invoices, packing slips, and purchase orders moved slowly from sites to accounting, delaying matching, approvals, and processing.

Complex Approval Process and Document Tracing

Approvals were non-linear and dependent on tracing documents across multiple stakeholders, creating queue build-up and skewed workloads.

Limited Process Documentation

Expense allocation rules, PO matching practices, and job-costing norms were not well documented, increasing variability and rework risk.

Construction Accounting Complexity

Commitment contracts, progressive invoicing, holdbacks/retainage, and GST/PST required domain-specific handling beyond generic AP.

Portfolio growth made manual follow-ups and reviewer-dependent execution harder to sustain each month. Without standardized workflows and distributed review capacity, close timelines and audit readiness were at risk. A scalable model with compliance-first controls was required to expand delivery without compromising accuracy.

OHI's Approach & Solution

Process Documentation and Re-Engineering

  • Extensive process documentation and re-engineering to address gaps from the paper-driven AP process.
  • Developed process maps, operating procedures, and checklists due to lack of existing documentation.
  • Documented construction AP concepts and rules (commitment invoices, holdbacks, GST/PST, indirect/overhead allocation).

Technology Enablement and Workflow Digitization

  • Selected a document management + workflow tool to automate approvals, index scanned images, and export into Timberline.
  • Ran a pilot with gradual invoice scale-up and tracked KPIs (processing speed, accuracy) to prove the solution.

Training and Change Adoption

  • Trained the India team on software, construction accounting norms, and company practices.
  • Trained the Canadian team/site managers on digital execution (PDFs, scanning, communication formats, document prep).

Execution and Stabilization

  • Performed three-way matching using scanned invoices, packing slips, POs, and rental contracts before entry.
  • Iterated on steps to reduce processing time, then scaled successfully after ~2 months of pilot validation.

Results & Impact

KPIBefore OHIAfter OHIImprovement
AP Cost StructureHigher ongoing AP processing costsOutsourced, standardized AP delivery45% cost savings
Held Invoices BacklogHigh volume held for approvals/codingImproved workflow visibility and follow-ups50% reduction
Turnaround TimeDelayed processing due to paper flow and approvalsSame-day invoice processingFaster cycle time
AccuracyHigher error and rework riskHigh-accuracy standardized processing99.7% accuracy
Processing ThroughputLower throughput due to manual steps125 invoices per FTE per dayHigher productivity
Complex Invoice HandlingComplex construction invoices difficult to scaleProgress billing, commitment invoices, holdbacks, multiple tax codes handledImproved coverage

The client achieved meaningful cost reduction while improving AP throughput, accuracy, and workflow control. The new model supported construction-specific AP complexity and created a foundation for expanding additional accounting processes into an outsourced delivery structure.

“OHI’s AP transition plan and construction accounting experience helped us digitize a paper-heavy process and achieve reliable same-day turnaround at scale.”

Vancouver-Based Construction and Development Firm

VP Accounting & Finance

Digitize construction accounts payable and reduce processing costs

Move from paper-driven workflows to a structured AP model with 3-way matching, faster approvals, and construction-ready controls.

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