Full-Stack Property Portal: From Search to Exchange for a National Estate Agency
Challenge
A 47-branch estate agency relied heavily on third-party portals for lead generation, with no direct customer ownership, no mobile experience, and limited digital capability across the buyer journey.
Solution
We built a full-stack PropTech platform: a consumer-facing property portal, mobile apps for buyers and sellers, digital offer management, virtual viewing integration, and a modern back-office system, all powered by a unified property data API.
Results
Direct website leads increased 340%. Portal dependency reduced from 91% to 54%. Virtual viewing adoption reached 67%. Offer-to-acceptance time reduced from 4.2 days to 11 hours. Administrative workload reduced by 38%.
Hargreaves Property Group had a structural problem, not a technical one. Like most estate agencies, they depended heavily on third-party portals for demand generation. Platforms like Rightmove and Zoopla controlled access to buyers, owned the data, and set the commercial terms.
The consequences:
- Rising listing costs (+23% YoY)
- No direct relationship with buyers
- Limited ability to differentiate digitally
- Fragmented customer journey across multiple systems
The strategic objective was clear: Own the buyer relationship from first search to exchange.
Platform Strategy
This was not a website rebuild. It was a full-stack transformation of how Hargreaves operated across:
- customer acquisition
- buyer engagement
- transaction workflows
- internal operations
The platform had to unify all of it.
Core Architecture
Unified Property Data Layer
At the centre of the platform is a real-time property data API:
- Aggregates listings, media, EPCs, and title data
- Normalises inconsistent legacy formats
- Exposes a single source of truth across all systems
- Delivered via GraphQL for flexible consumption
This eliminated data fragmentation across branches and systems.
Consumer Property Portal
Built using Next.js with server-side rendering for SEO performance:
- Map-based property search with geospatial filtering
- Saved searches with email and push alerts
- Real-time listing updates
- Virtual viewing booking directly from listings
The portal became the primary acquisition channel.
Mobile Experience (React Native)
iOS and Android apps for both buyers and vendors:
Buyers:
- Instant notifications for new listings
- Saved properties and alerts
- Offer submission via mobile
Vendors:
- Real-time listing performance (views, saves)
- Offer pipeline visibility
- Direct interaction with agents
This created a continuous engagement layer beyond the web.
Virtual Viewing Layer
- Matterport 3D tours for high-value properties
- Integrated video viewing scheduling
- Remote viewing capability embedded into listings
Result: buyers progressed further in the journey before physical visits.
Digital Offer Management
The most impactful transformation was in the offer workflow.
Before:
- Offers taken via phone
- Confirmed via email
- No audit trail
- Slow and error-prone
After:
- Buyer submits offer digitally (with supporting documents)
- Vendor receives real-time notification
- Vendor accepts, rejects, or counters via app
- Full audit trail maintained
- Accepted offers trigger downstream processes automatically
This removed friction from one of the most critical stages of the transaction.
Back-Office System Replacement
The legacy Property Management System (PMS) was:
- 12 years old
- deeply embedded in operations
- holding 8+ years of transaction data
We replaced it with a modern branch operations platform:
- Unified workflow across all 47 branches
- Real-time sync with consumer systems
- Centralised reporting and data visibility
Data Migration Strategy
- 340,000+ records migrated
- 6-week parallel run (old + new systems)
- Zero data loss
- Gradual branch-by-branch cutover
This ensured operational continuity during transition.
Measured Impact
Direct website leadsBefore: baselineAfter: +340%Impact: owned acquisition channel established
Portal dependencyBefore: 91%After: 54%Impact: reduced reliance on third-party platforms
Virtual viewing adoption67% of buyers completed at least one virtual viewingImpact: higher engagement before physical visits
Offer-to-acceptance timeBefore: 4.2 daysAfter: 11 hoursImpact: dramatically faster transaction cycle
Administrative workloadReduced by 38%Impact: operational efficiency across branches
Business Outcomes
Before:
- Reliance on external platforms for demand
- Fragmented buyer journey
- Manual, slow transaction processes
After:
- Direct-to-consumer acquisition channel
- Integrated digital experience from search to offer
- Faster deal cycles and improved conversion
- Scalable operational infrastructure
Why This Worked
- End-to-end thinkingThe solution covered the full journey, not just search
- Single source of truthUnified data layer eliminated inconsistencies
- Mobile-first engagementContinuous interaction beyond initial search
- Digital transaction layerRemoving friction from offers created immediate ROI
- Parallel migration strategyReduced operational risk during transition
Final Thought
Most property platforms optimise search. The real value lies in what happens after. Hargreaves didn’t just improve lead generation, they built control over the entire transaction lifecycle.
Building PropTech Platforms?
Intagleo Systems helps organisations design full-stack property platforms, from search and discovery to transaction and operations.