The ERP behind one of the UK's largest managing agents

01The challenge

In 2007 the property management systems on the market were accounting packages with a block list bolted on. None gave residents, directors or suppliers access, none integrated with the client-money services banks offered, and none scaled as a fast-growing agency added sites. Warwick needed a system that reflected how a managing agent actually works: demands, allocations, supplier instruction and correspondence as one flow.

Scale made every manual step expensive. More than half of Warwick's staff were property managers or their assistants, and before BOSS had a ticketing system, customer requests generated more than 100 internal emails per member of staff per day.

02What we did

1. 012007 — first platform, built for Warwick Estates in the year the agency was founded
2. 022011 — rebuilt for scale as the portfolio grew
3. 032017–18 — customer login rebuilt in React on a new API, ready for native apps
4. 042018–19 — Barclays virtual-account integration moved £15m of client monies without a break in the records
5. 052020–22 — NatWest integration with automated reconciliation
6. 062024–25 — resident-in-breach controls designed release by release, and Barclays virtual account management added for main accounts
7. 072026 — scripted migration of the Anthem portfolio from Qube

03What we built

Around the ledgers sit the tools property managers use every day: works orders with recurring and multi-schedule jobs, a handover process that lets a new site start before every detail is in, budget templates that keep demands within each lease, automated updates to RMC directors, and a projects tool shared with clients.

BOSS is built with domain-driven design: property management, customer support, finance, accounting and risk management are each modelled in the language of the people who do the work, worked out in event-storming and story-mapping sessions with Warwick's own experts. Reporting runs on an event-sourced model, so every change is recorded.

• Service charge and ground rent demands
• Bank reconciliation across Barclays, NatWest and Metro Bank
• Supplier instruction and payment runs
• Supplier login for invoice upload and tracking
• Correspondence with print and post
• Resident and director portal
• Credit control with automatic receipt allocation
• Sub-letting consents ledger

04The result

Warwick grew into one of the largest residential agencies in the UK on BOSS. By 2018 the platform managed more than 1,500 residential management companies, and in 2026 the acquired Anthem portfolio, about 600 sites and 23,000 units, moved from Qube into BOSS rather than running on a second system.

The automation carries the daily volume. By 2019 more than 1,000 bank transactions a day were being allocated, most with no human input, over 2,000 client bank accounts reconciled from a single upload of balances, and suppliers uploaded invoices directly and could be paid within two days. Moving reporting to an event-sourced model cut report times from 20 minutes to about 100 milliseconds.