The verdict in three sentences
A multi-site appointment booking platform for 14 centres and 2,500 appointments a day costs roughly 60,000 to 140,000 EUR in Dublin in 2026, depending on integration with operational software and online payment. The main lever is not the interface but the slot engine: capacity per lane or bay, duration per service type and a buffer for walk-ins. SMS reminders and online payment reduce no-shows and can lower on-site waiting by about 40 %.
What a platform for 14 centres costs
The operations director of a multi-site network (vehicle testing, tyre and service centres, clinics) knows the pattern: queues from opening time, month-end peaks, some centres overloaded while others run half empty. A booking platform spreads demand across centres and off-peak hours.
| Module | 2026 range (EUR excl. VAT) | Detail |
|---|---|---|
| Multi-site slot engine | 18,000 to 38,000 | Capacity per lane, duration per service type, walk-in quotas |
| Booking website and web app | 10,000 to 24,000 | Mobile flow, nearest centre, reschedule and cancel |
| Online payment (cards, Apple Pay, Google Pay) | 4,000 to 12,000 | Payment provider integration, refunds |
| SMS reminders and notifications | 4,000 to 10,000 + 0.04 to 0.07 EUR per SMS | Confirmation, day-before and two-hour reminders |
| Centre back office and management dashboard | 12,000 to 30,000 | Schedule per centre, fill rate, no-shows |
| Integration with existing operational software | 8,000 to 26,000 | Vehicle or customer data, job status |
| Hosting, maintenance, support | 800 to 2,000 EUR per month | Scaling on peak days |
2026 order of magnitude for an Irish agency or blended team. The low end matches a well-configured standard platform, the high end a full integration with the centres' operational software.
Volume, no-shows and waiting: the numbers behind the business case
With 2,500 appointments a day, the platform sends 5,000 to 7,500 SMS daily. The SMS budget remains small compared with the value of lost slots.
| Indicator | Without platform | With platform (target) |
|---|---|---|
| Average on-site wait | 45 to 75 minutes | 25 to 45 minutes, about 40 % less |
| No-show rate | 12 to 18 % (phone booking) | 4 to 7 % with SMS reminders |
| Share of walk-in customers | High, unmanaged | 20 to 30 % after 12 months |
| Fill rate gap between centres | Up to 2x | Under 25 % thanks to redirection |
| Monthly SMS cost | 0 EUR | 6,000 to 15,750 EUR |
| Payment taken before the visit | 0 % | 50 to 70 % of online bookings |
Online prepayment cuts no-shows more than reminders alone. It does require a clear refund or rescheduling policy, and processing in line with GDPR under the oversight of Ireland's Data Protection Commission, including SMS consent and retention rules.
Design choices that make the difference
Keep 20 to 30 % of slots for walk-ins at first, then reduce gradually. Always offer the nearest centre with a slot in the next 2 hours. Keep the mobile flow very short: registration or customer ID, service type, centre, slot, payment, in under 2 minutes. Finally, the dashboard should show each morning the fill rate by centre so managers can adjust staffing.
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Aoife, operations director of a 14-centre network around Dublin, handles 2,500 jobs a day at an average of 60 EUR. Today, 4 % of customers leave without being served because of the wait, or 100 lost jobs a day. If the platform recovers half of them, the gain is 50 x 60 = 3,000 EUR a day, about 900,000 EUR over 300 working days. With a 110,000 EUR investment and 140,000 EUR a year of SMS and maintenance, payback comes in under 3 months.
FAQ
Should every customer be required to book?
No, a sudden switch creates friction. Keeping 20 to 30 % walk-in capacity during the first year allows a smooth transition.
How long to launch the platform?
Allow 5 to 8 months for 14 centres, with a 2-centre pilot for 6 to 8 weeks before full rollout.
Which online payments should we offer?
Cards plus Apple Pay and Google Pay cover the bulk of Irish customers. Card processing fees run around 1.4 to 2.5 % per transaction depending on the provider.
Does the platform need to be multilingual?
English is enough for most customers, with Irish as an option for public-facing services. A second language adds roughly 10 to 15 % to the front-end budget.
How do we handle month-end peaks?
The slot engine can open extended hours and redirect to less busy centres. Hosting that can absorb 5 to 10 times normal traffic is essential on those days.
Let's scope your project. Tell us your number of centres, daily volume and existing software for a costed plan with a rollout schedule. 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.
