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Case Study

Real EstateGoogle SheetsZapierQuickBooks OnlineSlack

Vendor Payment Reconciliation for Property Management Firm

Keystone Property GroupPublished May 27, 2026

The Challenge

Keystone manages 45 rental properties and works with 30+ vendors (plumbers, electricians, landscapers). Each month, the bookkeeper spent two full days cross-referencing vendor invoices against work orders to make sure they matched before paying. Discrepancies were common and required back-and-forth emails that dragged on for days.

The Solution

We built a reconciliation sheet that pulls work order data and invoice data into side-by-side columns automatically. Zapier watches for new invoices in QuickBooks and matches them against the work order log by vendor and property. Mismatches get flagged instantly with a Slack alert to the bookkeeper, who can resolve them before payment day instead of discovering them mid-reconciliation.

Results

Monthly reconciliation time

Before

16 hrs

After

3 hrs

Payment discrepancies caught late

Before

5–8/month

After

0–1/month

Vendor payment disputes

Before

2–3/month

After

Rare

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