The verdict in three sentences
A multi-site business booking platform (sports centers, clinics, coworking spaces, workshops) costs, in 2026, between EUR 55,000 and EUR 130,000 over 4 to 7 months. The core value is not the display, it is the availability engine that manages slots, resources, and 15 sites in real time without conflicts. Well designed, it raises the occupancy rate and eliminates hours of phone-based management.
The building blocks of a booking platform
| Module | Role | Priority |
|---|---|---|
| Availability engine | Slots, resources, anti-conflict | Critical |
| Online payment | Deposit / full payment | Critical |
| Multi-establishment management | 15 sites, per-site rules | Critical |
| Roles & permissions | HQ, site manager, agent | High |
| Customer portal | Account, history, cancellation | High |
| Calendar integration | Google/Outlook sync | Medium |
| Notifications | Email/SMS reminders | High |
| Reporting | Occupancy, revenue per site | Medium |
Budget breakdown (2026 estimate)
Product team day rate in Toronto in 2026: EUR 420-620.
| Item | Estimated effort | Cost EUR |
|---|---|---|
| Scoping & multi-site UX | 8-14 days | 4,500-8,500 |
| Availability engine | 25-45 days | 14,000-28,000 |
| Online payment | 8-14 days | 4,500-9,000 |
| Multi-establishment + roles | 18-32 days | 10,000-20,000 |
| Customer portal + notifications | 12-22 days | 7,000-14,000 |
| Calendar integration | 6-12 days | 3,500-7,500 |
| Testing, acceptance, deployment | 12-20 days | 7,000-13,000 |
| Platform total | 89-159 days | 55,000-130,000 |
Running cost and support
| Item | 2026 estimate |
|---|---|
| Multi-site cloud hosting | EUR 120-400/month |
| Online payment fees | ~1.5% + EUR 0.25 / transaction |
| Reminder SMS | EUR 0.05-0.09 / SMS |
| Annual support | 15-20% of build |
Mini case study
Julien runs a network of 15 fitness centers in Toronto. Before, each site managed bookings by phone and notebook, with an average occupancy rate of 68% and 3 agents tied up 2 h/day. He invests EUR 95,000 in a unified platform delivered in 6 months. The occupancy rate rises to 79% thanks to 24/7 booking and automatic reminders, i.e. +11 points on EUR 2.4M revenue: about EUR 260,000 in additional annual revenue. The agent hours recovered (about 2,190 h/year) are reallocated to customer advice. ROI is reached in under a year.
FAQ
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Why is the availability engine the heaviest item?
Because it must handle slots, shared resources, per-site rules, and simultaneous bookings without error. It is the technical core that guarantees no slot is sold twice.
Can we manage different rules per site?
Yes. Each establishment can have its own hours, prices, resources, and cancellation policies, while still being managed from a single HQ dashboard.
Is online payment mandatory?
No, but an online deposit sharply reduces no-shows (often -30 to -50%). You can offer a deposit, full payment, or on-site payment depending on the site.
How long to deliver?
Expect 4 to 7 months depending on the number of modules, with a first version on 2-3 pilot sites before full rollout across the 15 sites.
Can the platform connect to our existing calendars?
Yes, two-way synchronization with Google Calendar or Outlook is planned to avoid double entry and calendar conflicts.
Let's scope your project. Tell us your number of sites, your resource types, and your booking volume: we quote a unified platform between EUR 55,000 and EUR 130,000. 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.
