The verdict in three sentences
A custom site inspection app costs, as a 2026 estimate, 30,000 to 65,000 EUR excl. VAT and ships in 3 to 5 months. With configurable checklists, annotated photos, an on-site PDF report and offline mode, it saves each inspector about 1 hour per visit. Above 1,500 visits a year, that gain alone pays back the project in under 18 months, and generic tools become more expensive than they look.
The hidden cost of the report written at night
In an Irish engineering or building control practice, an inspector completes 2 to 4 visits a day under BCAR, fire safety or health and safety obligations. On site, they fill in a paper form or type notes on a phone, photograph defects, then re-key everything into a Word template at the office or at home, inserting photos one by one and numbering observations. Count 45 minutes to 1 hour 15 per report. The result: reports sent 2 to 5 days after the visit, photos attached to the wrong item and tired inspectors.
A dedicated app changes the sequence. The inspector opens the job on a tablet, the right checklist for the building type appears, they tick, comment, photograph and annotate directly on the image (arrow, circle, dimension). In a basement plant room without signal, everything is stored on the device. At the end of the visit, the branded PDF report is generated, signed by the contractor's representative and sent as soon as connectivity returns.
What the app includes and what it costs
| Module | Function | 2026 range (excl. VAT) |
|---|---|---|
| Configurable checklists | Templates by building type, regulation, client | 6,000 to 12,000 EUR |
| Annotated photos | Capture, markup, link to observation | 4,000 to 8,000 EUR |
| Offline mode and sync | Local storage, conflict handling | 6,000 to 14,000 EUR |
| On-site PDF report | Layout, signature, automatic sending | 4,000 to 9,000 EUR |
| Back office and scheduling | Jobs, inspectors, clients, history | 6,000 to 12,000 EUR |
| Defect close-out tracking | Contractor reminders, proof of fix | 3,000 to 7,000 EUR |
| ERP or invoicing integration | Jobs billed automatically | 1,000 to 3,000 EUR |
Total: 30,000 to 65,000 EUR. The low end covers one building type and a standard report; the high end multiple disciplines (electrical, lifting, accessibility, fire), several report templates and defect tracking.
Custom app or generic inspection tool
| Criterion | Generic inspection tool (subscription) | Custom app |
|---|---|---|
| Upfront cost | Near zero | 30,000 to 65,000 EUR |
| Recurring cost for 25 inspectors | 25 to 60 EUR per user per month, 7,500 to 18,000 EUR a year | Hosting and maintenance, quoted |
| Report layout | Vendor template, limited changes | Your exact structure and branding |
| Regulatory references | Re-keyed and maintained by you | Built in and versioned |
| Offline mode | Often partial | Complete, tested underground |
| Link to invoicing | Manual export | Automatic |
| Data ownership | Vendor | You |
A generic tool suits a team of under 10 inspectors with a simple report. Once the report is a contractual deliverable with a structure set by the client or by regulation, custom avoids the manual touch-ups that cancel out the time saved. Kolonell sets the budget after a scoping workshop, in the quote. The offline approach is the same as in our proof-of-delivery driver app.
One point Irish firms raise early is data protection. Inspection photos often show workers, vehicle registrations or residents, so they count as personal data under GDPR. The app stores them encrypted on the device, purges local copies after sync, and keeps the master files on EU-hosted servers with access logs per client. Retention rules, for example 6 years after project handover, are configured per client rather than left to each inspector.
Mini case study
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Aoife, technical director of an engineering inspection firm in Dublin, manages 25 inspectors doing 3 visits a day, 200 days a year: 15,000 visits. With 1 hour saved per visit at a loaded rate of 60 EUR, the theoretical gain is 900,000 EUR a year. Aoife takes a cautious view: only 30 % of that time is actually redeployed to new billable visits, so 270,000 EUR. The project costs 58,000 EUR plus about 9,000 EUR a year for maintenance and hosting. Payback comes in under 3 months, and reports go out the same day instead of 3 days later.
FAQ
How much does a site inspection app cost in 2026?
Between 30,000 and 65,000 EUR excl. VAT for a custom app with checklists, annotated photos, PDF reports and offline mode. Price rises with the number of disciplines and report templates.
How long does development take?
3 to 5 months, including a month of scoping and field testing with 3 to 5 pilot inspectors. Rolling out discipline by discipline reduces risk.
Does it work in a basement without signal?
Yes, offline mode stores checklists, photos and signatures on the tablet, then syncs when signal returns. A single visit can hold 150 photos without loss.
Do we need special tablets?
A recent Android tablet or iPad is enough, ideally with a rugged case. Budget 400 to 900 EUR per device.
Can we reuse our existing Word report templates?
Yes, they become the basis of PDF generation, with the same structure and branding. Migrating 3 to 5 templates is included in most projects.
Let's scope your project. Send us a sample report, your inspector headcount and the building types you cover, and we will scope an app delivered in 3 to 5 months. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
