CMS and mobile app development case study

Transforming the property sale journey with one fully connected digital platform

Selling a house is stressful, right? Not with Knock Knock. This digital platform simplified the process by putting all the pieces in one place – from certifications all the way to the final sale. And the heroes behind it? You're looking right at them.

Quick look

✅ Full, custom-built digital ecosystem

✅ Disrupted the South African property market

✅ Established as a leader in the Southern Hemisphere

✅ An ambitious vision realised in [xxx] months

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Project profile

The client

Knock Knock

Knock Knock set out to disrupt the traditional property market with a bold idea. They would build a single platform where homeowners could manage the entire sales process from start to finish. 

Property-focused digital platform

Multi-industry integration, from tradespeople to legal teams

Designed for simplicity in a complex market

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The problem

A bold idea held back by a lagging industry

The property sector has many moving parts. Knock Knock's goal was to unify this complex ecosystem in one user-friendly platform.



The challenge: dealing with a fragmented technical landscape within an industry that was slow to adopt new ideas. To realise its vision, Knock Knock had to account for:

  • Sellers needing access to multiple certified tradespeople
  • Different certification requirements (electrical, gas, plumbing, etc.)
  • Legal oversight and document handling
  • Payment flows, contracts and final transfer of ownership
  • Lack of a unified system to manage everything from start to finish


Each step added friction, delays and risk. Knock Knock needed a digital hero.

Our solution

A fully integrated app, API and CMS

We designed and delivered a three-part solution that unified a complex industry ecosystem and connected every stakeholder in the property journey.

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Disconnected industries and workflows

Centralised platform architecture, featuring:

Laravel-powered API acting as the system backbone

Real-time communication between the app, users and the admin system

Unified data structure for property, certification and legal workflows

Black-and-white maze puzzle with thick, angular paths

Complex certification requirements across trades

Smart workforce matching and verification, harnessing:

Custom-built CMS to onboard and approve professionals

Verification workflows for electricians, plumbers, gas engineers, etc.

Location-based logic to match users with certified tradespeople nearby

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Legal complexity and compliance

Integrated legal workflow management, with:

Lawyer access for document checks and approvals

Structured handling of contracts and sign-offs

Secure audit trail for compliance and record-keeping

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Fragmented experience for home sellers

Cross-platform mobile app (iOS and Android):

Built using NativeScript for a single, efficient codebase

Compiled natively on each platform for speed and performance

Delivering a seamless user journey from listing to sale completion

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Operational overhead for the platform owner

Custom-built admin CMS, allowing for:

Full control over user profiles and activity

Ability to manage listings, professionals and workflows

Central hub for monitoring and maintaining platform quality

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Project timeline

1Day 1

Discovery and platform architecture planning

2

Workflow mapping across property, trade and legal journeys

3

API architecture defined and development begins

4

CMS build for user verification and management

5

Mobile app development using NativeScript

6

Integration of location-based logic and proximity matching rules

7

End-to-end testing across all user types

8

All systems deployed and launched

Roadblock…

With this project, technical challenges were just the start. We also had to contend with a mountain of logistical obstacles.



To take one example, we weren't building for a single user type. We were building for admin users, homeowners, legal teams and professionals across multiple trades. All came with different needs, expectations, access rules and responsibilities.

…Averted

We built a single source of truth.



By designing a robust API that sat at the core of the system, we united fragmented moving parts under one trustworthy umbrella. From there, we layered tailored experiences for each user type, knowing the structure we'd implemented would mean no compromises for performance or usability.

The results

Quite simply, we did it. We built a market-leading platform that simplified property sales and transformed a fragmented, manual process into a streamlined digital experience.

End-to-end mobile app

for the full property sales journey

Seamless coordination

between sellers, tradespeople and legal teams

Reduced friction

in a once-fragmented market

Market-leading solution

in the Southern Hemisphere

Get in touch

Shooting for the moon?

We love ambitious ideas because thinking big means thinking smart.


From game-changing mobile apps to full-scale digital ecosystems, we've spent years helping clients make complex ideas a powerful, practical reality.


Got a vision that doesn't fit the mould? Let's talk.