The verdict in three sentences
A multi-site restaurant group loses money not at the counter but in the gap between its venues: without real-time consolidation, no one sees that site B wastes 4 more points of food cost than site A. A centralized management system costs 40,000 to 110,000 EUR custom or 60-150 EUR/site/month as multi-site SaaS, over a 4 to 8 month rollout. The return comes from food cost: recovering 2 to 4 margin points on a group turning over 6M EUR means 120,000 to 240,000 EUR a year.
Build vs Buy: the real trade-off
The choice is not ideological — it depends on the number of sites, your existing POS/PMS and the need for specifics (recipes, central purchasing, franchisees). SaaS wins under 8 standardized sites; custom wins as soon as you must connect a purchasing hub, central kitchens or an ERP.
| Criterion | Multi-site SaaS | Custom development |
|---|---|---|
| Entry cost (10 sites) | 7,200-18,000 EUR/yr | 40,000-110,000 EUR one-off |
| Year 2-3 cost | 7,200-18,000 EUR/yr | 6,000-15,000 EUR maintenance |
| Time to launch | 4-10 weeks | 4-8 months |
| Recipe/purchasing customization | Limited | Full |
| ERP/accounting integration | Variable | Bespoke |
| Code ownership | No | Yes |
| Break-even | < 8 sites | > 10 sites or heavy specifics |
The KPIs that stream in real time
A good system consolidates each night — ideally continuously — POS and stock data from every site into a single dashboard. These are the indicators that actually steer margin.
| KPI | 2026 target | Impact of a 1-point drift |
|---|---|---|
| Food cost | 28-32 % of revenue | -60,000 EUR/yr on 6M revenue |
| Labour cost | 30-35 % of revenue | -60,000 EUR/yr |
| Average ticket | 18-26 EUR | Tracked per site |
| Waste/loss rate | < 3 % | Automatic alert |
| Theoretical vs actual stock gap | < 1.5 % | Theft/error detection |
| Revenue/site/day | Internal benchmark | Site ranking |
Mini case study
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Thomas runs a group of 9 restaurants in Lyon and Villeurbanne, 6.2M EUR revenue, average food cost at 33 %. Before consolidation he discovered drifts three weeks late, at accounting close. He invests 68,000 EUR in a custom platform connected to his POS and central purchasing, delivered in 6 months. Within a year average food cost drops from 33 % to 30.5 % (2.5 points), recovering 155,000 EUR of food margin. First-year ROI: the tool pays for itself in just over 5 months of savings, then generates net.
FAQ
Do we have to replace everything, including the POS? No. In 80 % of cases you keep existing POS terminals and add a consolidation layer that pulls their data via API. Replacing POS doubles budget and timeline.
SaaS or custom for 5 restaurants? At 5 standardized sites, a multi-site SaaS at 60-100 EUR/site/month (3,600-6,000 EUR/yr) is almost always right. Custom is justified beyond 10 sites or with your own purchasing hub.
How long before a margin gain shows? The first food-cost alerts appear at go-live. A measurable, stable food-margin gain typically shows over 2 to 3 months of operation, the time to fix ordering processes.
Can we manage franchisees with separate rights? Yes — a classic custom case: each franchisee sees its own data, HQ sees everything consolidated, with royalties calculated automatically.
What annual maintenance budget should we plan? Budget 12 to 18 % of development cost per year for custom (hosting, evolutions, support), i.e. 6,000 to 15,000 EUR for a 68,000 EUR project.
Let's scope your project. Tell us your number of sites, your current POS and whether you have a purchasing hub: we'll frame a scope and indicative budget (custom or SaaS). 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.
