The verdict in three sentences
With 1,100 beds across 5 residences, running bookings on spreadsheets, emails and calls to parents gets expensive in arrears, deposit disputes and staff time. A custom app covering booking, contract, rent, deposits and photo check-in/check-out reports costs 45,000 to 95,000 EUR excluding VAT and ships in 4 to 5 months. A realistic target is 25% fewer arrears and half as many deposit disputes, which pays the project back well within one academic year.
The real cost of running without a tool
In Amsterdam, a student room in a private residence rents in 2026 for 750 to 1,200 EUR a month depending on the area (Science Park, Zuidas, Nieuw-West, Amstel) and included services. Under the Good Landlordship Act, the deposit is capped at two months of base rent and must be returned within 14 days of departure, or 30 days if damage is deducted. Across 1,100 beds, every point of arrears matters.
| Indicator (1,100 beds, average rent 900 EUR) | Manual management (estimate) | With the app |
|---|---|---|
| Monthly rent invoiced | 990,000 EUR | 990,000 EUR |
| Arrears or delays over 30 days | 4% | 3% (25% less) |
| Monthly arrears amount | 39,600 EUR | 29,700 EUR |
| Deposit disputes per year | 120 to 180 | 50 to 80 |
| Time spent chasing and collecting | 140 hours a month | 50 hours a month |
| Deposit return time | 20 to 45 days | 7 to 14 days, within legal limits |
| Occupancy at the start of the year | 93 to 95% | 97 to 99% thanks to online booking |
The direct gain on arrears is about 9,900 EUR a month, close to 119,000 EUR a year, before time savings and the occupancy effect.
App scope and price
| Module | Content | Indicative budget |
|---|---|---|
| Online booking | Availability by residence and room type, deposit, waiting list | 7,000 to 14,000 EUR |
| Digital contracts | Lease generation, e-signature, ID and student card checks | 5,000 to 10,000 EUR |
| Student and guarantor portals | Schedule, receipts, reminders, guarantor access to payments | 7,000 to 15,000 EUR |
| Online payment | iDEAL, SEPA direct debit and cards via Mollie or Adyen | 5,000 to 12,000 EUR |
| Deposit management | Collection, documented deductions, tracked refunds within 14 or 30 days | 4,000 to 8,000 EUR |
| Photo inspection reports | Tablet app, timestamped photos, signatures at move-in and move-out | 6,000 to 13,000 EUR |
| Operator dashboard | Occupancy, collections, arrears per residence, accounting exports | 7,000 to 18,000 EUR |
A first version (booking, contracts, student portal, payment) starts around 45,000 EUR. The full scope with photo inspections, deposits and multi-residence dashboards approaches 95,000 EUR. Hosting and maintenance: 6,000 to 11,000 EUR a year.
Timeline and points of attention
The project should be live before the spring booking season, so start in October or November: 3 weeks of scoping, 12 to 14 weeks of development, 3 weeks of pilot on one residence. GDPR requires restricting access to ID documents and guarantor data. Deposit deductions must be backed by inspection photos, otherwise tenants can challenge them before the Huurcommissie.
Mini case study
Sem, operator of 5 private student residences in Amsterdam (1,100 beds), invests 70,000 EUR in the app, plus 9,000 EUR of annual maintenance.
- Lower arrears: 9,900 EUR a month, or 118,800 EUR a year
- Management time saved: 90 hours a month, about 40,000 EUR a year at loaded cost
- Total annual gain: 158,800 EUR, minus 9,000 EUR of maintenance = 149,800 EUR net
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Payback comes in about 6 months (70,000 / 12,500 EUR of net monthly gains), well within one academic year.
FAQ
How much does a student housing management app cost in Amsterdam?
Between 45,000 and 95,000 EUR depending on modules and the number of residences. Annual maintenance is 6,000 to 11,000 EUR.
Which payment methods should we integrate in the Netherlands?
iDEAL first, then SEPA direct debit and cards for international students, through Mollie, Adyen or Stripe. Integration costs 5,000 to 12,000 EUR, with fees from about 0.29 EUR per iDEAL transaction.
Can guarantors pay directly?
Yes, the guarantor portal gives access to the schedule and online payment, including from abroad by card. Residences that offer this usually see 20 to 30% fewer late payments.
How do we avoid deposit disputes?
With timestamped photo reports signed by the student at move-in and move-out. Disputes typically drop by 50 to 60%, and refunds stay within the legal 14 or 30 day limits.
How long until the app is ready?
Allow 4 to 5 months, including a 3-week pilot on one residence. Aim to launch before the spring booking season for a September intake.
Let's scope your project. Tell us the number of residences, beds and payment methods you need, and we will quote an app delivered in 4 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.
