How a UK Council Delivered a Fully Integrated Cloud Housing Platform with Zero Disruption
A case study on how Opal Solutions covers procurement, AWS integration, data migration, and phased delivery across six housing domains for a live local authority.
Opal Solutions replaced an ageing on-premise housing system with a fully cloud-integrated platform, achieved 99.8% data accuracy, and hit go-live with zero critical incidents. This case study shows how:
The AWS architecture that cut latency from overnight to under 5 minutes
99.8% data accuracy was achieved across all migrated records
The ETL strategy behind <0.1% financial variance at go-live
50–70% of manual processing effort was eliminated
Is your organisation truly ready to modernise its Housing Management System?
Before any housing transformation succeeds, organisations need to know where they actually stand.
This Housing Transformation Readiness Checklist helps you assess your readiness across 7 critical areas from procurement and data quality to go-live risk management.
The Challenge
Most local authorities dealing with housing transformation face the same converging pressures. If any of these look familiar, this case study was built for you.
Legacy HMS Hitting
Its Limits
On-premise, MS SQL-based systems with limited scalability and growing maintenance overhead
Brittle, Batch-based
Integrations
Point-to-point interfaces and overnight batch jobs with no flexibility for modern services
Poor Data Quality and
Fragmented Reporting
Unstructured address data, duplicates, and no unified validation framework across domains
High Manual Effort and
Limited Scalability
Staff time lost to manual reconciliation, finance processing, and data handling across teams
What We Delivered
End-to-end transformation Without Disrupting Live Services
Opal Solutions took ownership of the full programme: from G-Cloud procurement and vendor selection through to data migration, AWS integration architecture, phased domain rollout, and go-live. Six housing domains. Eleven third-party integrations. One seamless cutover.
Cloud-hosted NEC HMS
Selected through fully compliant G-Cloud procurement, replacing legacy on-premise infrastructure
AWS Serverless Integration Layer
Replaced overnight batch processing with near real-time data flows (<5 min latency) across 11 systems
99.8% Data Accuracy
Achieved through 5+ iterative ETL cycles with micro-to-macro validation at every level
Spatial Data Standardised
Ordnance Survey APIs + LLPG alignment for 80–85% UPRN address matching accuracy
Zero Service Disruption
Phased rollout aligned to business cycles, including service charge invoicing windows
Measured Outcomes
A structured delivery approach enabled measurable improvements across data quality, integration performance, and operational efficiency.
< 99.8%
Data accuracy across all migrated records
< 5 min
Integration latency, down from overnight batches
50-70%
Reduction in
manual processing effort
< 0.1%
Financial variance across
reconciled datasets
99.9%
Integration service
availability in steady state
Zero
Disruption to service charge
cycles or billing
Get the Full Case Study Here!
The case study walks through every phase of delivery in detail, including the integration architecture diagrams, measured KPIs, ETL data journey, and key innovations that can be applied to your next transformation programme.
Download the Checklist Here!
A free, practical checklist used to assess readiness across 7 critical areas so you know exactly where you stand before your transformation begins. Get your copy and assess your organisation's readiness across procurement, data, integration, and go-live risk.
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