The verdict in three sentences
A property developer managing programmes, reservations, VEFA staged payments and buyer relationships on spreadsheets quickly hits their limits: payment-call errors, duplicates, no buyer portal. In 2026, they weigh a developer SaaS at 50-150 EUR/user/month against a custom platform at 50,000-110,000 EUR + 15 % annual maintenance. Custom becomes profitable once accounting integration and the buyer portal justify a tool cut to their process, with break-even at 3-4 years.
Developer SaaS vs custom platform: the 2026 calculation
A specialised SaaS starts fast but bills per user and imposes its model. A custom platform matches the developer's process (VEFA, reduced VAT, subdivision) but needs an upfront investment. Here is the comparison for a 12-user team.
| Line item | Developer SaaS | Custom platform |
|---|---|---|
| Licence / development | 50-150 EUR/user/month | 50,000-110,000 EUR one-off |
| Annual cost (12 users) | 7,200-21,600 EUR/year | 0 (owned licence) |
| Accounting integration | often optional | included |
| Maintenance / evolutions | included | 15 %/year |
| Year-1 cost (12 users) | 8,000-24,000 EUR | 55,000-120,000 EUR |
| 4-year cumulative cost | 32,000-96,000 EUR | 80,000-176,000 EUR |
| VEFA customisation | limited | total |
Over 4 years, SaaS stays lighter for a small structure. Custom pulls ahead once VEFA staged payments, the buyer portal and accounting integration demand their own logic that vendors do not cover.
The features that make the difference
A developer software's value hinges on the reliability of staged payments and the quality of the buyer relationship. Here is the 2026 measured impact of the key functions.
| Feature | Stake | Measured impact |
|---|---|---|
| Programme / unit tracking | Real-time sales view | Faster decisions |
| Buyer CRM | Relationship and follow-up | Higher conversion |
| VEFA staged payments | Cash flow and compliance | Near-zero errors |
| Buyer portal | Buyer transparency | Calls settled sooner |
| Accounting integration | End of re-entry | -8 h/week |
| Cost per ERP integration | Ecosystem | 3,000-8,000 EUR/connector |
A developer managing 3 programmes and 120 units on spreadsheets easily loses 10 to 12 h/week on re-entry and payment-call tracking, with a costly error risk on VEFA milestones.
Mini case study
Ms Bertin runs a 12-person property development firm with 3 active programmes and 120 units. Her team spends 11 h/week tracking VEFA staged payments and buyer relationships on spreadsheets, i.e. at 35 EUR/h loaded about 20,000 EUR/year, with occasional payment-call errors costly to cash flow. She invests 78,000 EUR in a custom platform (programme tracking, CRM, automated staged payments, buyer portal, accounting integration). Tracking time drops to 3 h/week, i.e. 14,500 EUR/year saved, plus payment calls settled on average 12 days earlier. With 12,000 EUR annual maintenance, break-even lands around 42 months, the reliability of staged payments being the real hidden gain.
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FAQ
Developer SaaS or custom platform?
For a small structure with standard needs, SaaS (50-150 EUR/user/month) starts fast and costs less in the early years. Custom is justified once VEFA staged payments, the buyer portal and accounting integration demand a tool cut to your process.
Can VEFA staged payments be automated?
Yes. A custom platform generates payment calls based on construction progress (foundations, floor slab, etc.) and contractual milestones, eliminating manual errors that hurt cash flow.
What is a buyer portal for?
It gives buyers access to their file, documents and payment calls. Transparency speeds up settlement and sharply reduces customer-service calls.
How much does accounting integration cost?
Budget 3,000 to 8,000 EUR per connector depending on the ERP or accounting software complexity. This integration removes re-entry, the main source of errors and wasted time.
How long to deploy a custom platform?
Expect 4 to 7 months across scoping, development and migrating existing programmes, training included. SaaS deploys in weeks but imposes its functional limits.
Let's scope your project. Tell us your number of programmes, units and accounting tools: we will price a custom development-management platform, indicative budget 50,000-110,000 EUR. 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.
