Case study · Construction
Site inspections that close the loop
Construction firms carry out safety inspections and snagging on paper, and corrective actions get lost between site and office. This is how we built an offline-capable web app for inspections with photos, assigned actions and compliance reporting.
Project overview
Inspections and actions in an offline-capable web app.
- Industry
- Construction
- Client
- Confidential
- Solution
- Inspection and compliance
- Platform
- Progressive web app
- Timeline
- 10–16 weeks
- Team
- 4 people
- Offline
- Inspections without signal
- Users
- Site managers, subcontractors, HSE
- Reports
- Compliance dashboards
Expected business outcomes
What the client set out to achieve
Action close-out and audit readiness are the measures.
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Tracked
Every corrective action
Actions assigned with deadlines and photo evidence of close-out.
Where actions are raised in the app
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Faster
Snag close-out
Subcontractors see and close their snags directly.
Measured as days to close
-
On demand
Compliance reports
Inspection history per site ready for audits.
From app data
Business challenges
Where the client started
Paper forms and photo folders.
Inspections
Paper checklists, scanned later.
Snagging
Snag lists in spreadsheets emailed to subcontractors.
Actions
Corrective actions followed up by phone.
Evidence
Photos on personal phones.
Audits
Evidence gathered in a rush before audits.
Proposed solution
What the app covers
Works on any device, even without signal.
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Inspection templates
Safety, quality and environmental checklists.
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Photos and annotations
Photos marked up and attached to findings.
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Snagging
Snags by location and trade, assigned to subcontractors.
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Corrective actions
Actions with owners, deadlines and close-out evidence.
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Offline sync
Inspections completed offline, synced later.
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Compliance dashboards
Inspection coverage, open actions and trends by site.
Project requirements
What the client asked us for
The request was digital inspections. The value comes from closing the loop: every finding becomes an action with an owner and a deadline.
A web app avoids app store installs for subcontractors, while still working offline.
What the project had to deliver
- 01Digital inspections
- 02Actions with owners
- 03Subcontractor access without installs
- 04Audit-ready records
Key challenges & considerations
What made it harder, and what we did
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Poor signal on sites
What we did
The app worked offline on site and synced when signal returned.
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Many subcontractor users
What we did
Subcontractors signed in through a simple link with limited access.
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Varied inspection standards
What we did
Inspection templates were standardised but configurable.
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Large photo volumes
What we did
Photos were compressed and uploaded in the background.
What we watched for
- Design for offline
- Make actions the core
- Keep subcontractor access simple
- Standardise templates
Development process
Templates, actions, reports
Templates are designed with the HSE team.
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Templates
Inspection and snag templates agreed.
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Build
PWA with offline sync and photos.
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Actions
Action workflow and subcontractor access.
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Pilot
Two sites use the app.
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Rollout
All sites with dashboards.
Technology stack
Offline-capable progressive web app
One app for every device, no app store needed.
Front end
- React or Next.js
- TypeScript
- Accessible design system
Back end
- Node.js or .NET
- PostgreSQL or SQL Server
- REST / GraphQL APIs
Cloud
- Azure or AWS
- Managed databases
- CDN
Quality
- Automated tests
- CI/CD
- Monitoring and alerts
Quality assurance & deployment
Tested every sprint, released without drama
Testing ran alongside the build, not after it. Every feature was checked against its acceptance criteria in the sprint it was built in, and releases went through an automated pipeline.
- Automated unit and API tests, run on every change
- Code review by a second engineer before anything was merged
- Feature testing against written acceptance criteria
- Cross-browser and responsive checks on the agreed devices
- Security checks on access, sessions and data handling
Deployment
- 01PilotTwo sites use the app.
- 02RolloutAll sites with dashboards.
- 03Automated release pipelineThe same build moved from staging to production, with a tested rollback.
- 04Monitoring and warrantyError and uptime monitoring from day one, and six months of free bug fixing.
Final deliverables
Findings that get fixed
Inspections are completed on site with photos, every finding becomes a tracked action and subcontractors close their snags directly.
Audit evidence is always ready.
- Digital inspections
- Tracked actions
- Subcontractor snagging
- Compliance dashboards
Handed over to the client
- 01Production applicationDeployed and monitored
- 02Source codeIn a repository the client can access
- 03Technical documentationArchitecture, setup and deployment
- 04Test suite and pipelineSo later changes stay safe
- 05Six-month warrantyFree bug fixing after delivery
Success metrics
How success is measured
| Measure | Outcome | How it is measured |
|---|---|---|
| Every corrective action | Tracked | Where actions are raised in the app |
| Snag close-out | Faster | Measured as days to close |
| Compliance reports | On demand | From app data |
Verified reviews
What clients say about our web development work
Verified reviews from our clients on the same kind of work, published on Clutch.
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Web Development
Custom Web Development for a Software Solutions Company
We can rely on them to handle almost any task with confidence, as they consistently deliver good results.
Casper Hougaard Jensen
CEO & Co-Founder, Iterator IT Jul 2021 – Sep 2022
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Web Development
Web & Mobile App Development for a Software Development Company
They efficiently organized tasks and deliverables while promptly addressing questions.
Damien Retzinger
Founder, Graycore Jun 2021 – Feb 2023
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Web Development
Website Development for a Software Engineering Company
They have a broad understanding of different technologies.
Eugene Bosikov CEO, Ezibeline LLC Mar 2022 – Ongoing Verified review on Clutch (Eugene Bosikov, opens in a new tab)
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