The verdict in three sentences
For a headquarters with 1,100 employees in flex office at 0.7 desks per person, i.e. 770 desks, an off-the-shelf booking tool costs 2 to 6 USD per user per month, i.e. 26,400 to 79,200 USD a year, while a custom platform runs 35,000-70,000 USD plus 7,000-14,000 USD a year of maintenance. The real financial stake lies elsewhere: a measured occupancy rate lets you give back 10 to 15% of floor space, which weighs ten times more than the software price. Custom makes sense when integration with badges, Outlook and internal rules (team zones, fixed days, parking) goes beyond what standard tools can do.
Off-the-shelf software or custom platform: the comparison
| Criterion | Off-the-shelf SaaS | Custom platform |
|---|---|---|
| Upfront cost | 0-9,000 USD (setup, training) | 35,000-70,000 USD |
| Annual cost for 1,100 users | 26,400-79,200 USD | 7,000-14,000 USD (hosting, maintenance) |
| 3-year cumulative cost | 79,200-246,600 USD | 56,000-112,000 USD |
| Outlook / Microsoft 365 integration | Standard | Custom, included in discovery |
| Badge and access control integration | Depends on vendor, sometimes extra | Direct connection to the badge system |
| Business rules (team neighbourhoods, fixed days, parking, lockers) | Limited configuration | Any rule |
| Deployment time | 4-8 weeks | 3-5 months |
| Ownership of occupancy data | Vendor | Company |
Below 400 users, SaaS almost always wins. Above 1,000, and as soon as the site has several buildings, parking and team rules, the 3-year cost often tips in favour of custom.
What the platform must include
| Module | Estimated 2026 cost | Role |
|---|---|---|
| Interactive floor plans, desks and rooms | 7,000-14,000 USD | Book in 3 taps from a phone |
| Outlook / Teams sync | 4,500-9,000 USD | Rooms booked from the calendar |
| Badge system connection | 6,000-12,000 USD | Auto-release of unused desks |
| Team rules, office days, neighbourhoods | 4,500-9,000 USD | Group teams on the right days |
| Parking, lockers, visitors | 3,500-8,000 USD | One tool for the front desk |
| Occupancy dashboard and export | 6,000-12,000 USD | Decide on space from real data |
| SSO authentication and privacy | 3,500-6,000 USD | Security and compliance |
The sensitive point is occupancy data: it must be aggregated by zone and team, with no individual tracking, to stay compliant with privacy rules and acceptable to employees, who should be informed before rollout.
How much space measured occupancy lets you give back
| Indicator | Before measurement | After 6 months of data |
|---|---|---|
| Available desks | 770 | 770, then 660-690 after redesign |
| Average occupancy Tuesday-Thursday | Unknown (estimated 75%) | Measured: 68-72% |
| Occupancy Monday and Friday | Unknown | Measured: 35-45% |
| Meeting rooms booked but empty | Not tracked | 20-30% auto-released |
| Office floor area | 120,000 sq ft | 102,000-108,000 sq ft (10-15% given back) |
| Full occupancy cost per sq ft per year in Miami | 70-80 USD | Unchanged |
The full occupancy cost of Class A office space in Miami (rent, operating expenses, energy, cleaning) is around 70 to 80 USD per sq ft a year in 2026. Giving back 12,000 sq ft is therefore worth 840,000 to 960,000 USD a year, provided you can release a floor at lease expiry or sublet it.
Mini case study
Claire, workplace director of a corporate campus in Miami, compares two quotes. The shortlisted SaaS costs 4 USD per user per month, i.e. 52,800 USD a year and 158,400 USD over 3 years. The custom platform costs 55,000 USD plus 10,000 USD a year, i.e. 85,000 USD over 3 years: a 73,400 USD gap. More importantly, badge data shows 70% occupancy Tuesday to Thursday and 40% on Mondays and Fridays. By grouping teams, she gives back a 12,000 sq ft floor at lease expiry, about 900,000 USD a year at 75 USD per sq ft. The 55,000 USD build pays for itself in less than one month of space savings.
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FAQ
How long does a custom platform take to deploy?
Count 3 to 5 months, including 3 to 4 weeks of discovery and a 3 to 4 week pilot on one floor. Badge integration is often the critical path, because it depends on the access control vendor.
Is a 0.7 desk-per-person ratio sustainable?
It is with 2 to 3 remote days a week and team attendance rules. Without measurement, Tuesday and Thursday peaks often fill 95% of desks, hence the importance of booking.
Can occupancy be measured without monitoring employees?
Yes: the platform aggregates data by zone and time slot, with no individual history visible to managers. Plan a privacy review and clear employee communication before go-live.
What does maintaining a custom platform cost?
Budget 7,000 to 14,000 USD a year for hosting, security updates and small changes. New modules, such as a second site, are priced separately, often 9,000 to 17,000 USD.
What gain can we expect on meeting rooms?
Automatically releasing rooms booked but unused after 10 to 15 minutes usually recovers 20 to 30% of slots. That often avoids building 2 to 3 extra rooms during a redesign.
Let's scope your project. Share your user count, floor plans and badge system: we will price a custom booking platform between 35,000 and 70,000 USD with a pilot in 10 to 12 weeks. 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.
