The verdict in three sentences
A custom real estate development platform runs between 40,000 and 110,000 EUR in 2026, depending on the number of concurrent programs and the depth of payment calls. The core value is sales tracking (units, reservations, deeds) coupled with payment call and cash-flow management. Return on investment comes from cash-flow visibility and shorter selling times.
What the platform covers in 2026
A complete tool links program and unit management, sales tracking (options, reservations, signatures), payment calls based on construction progress, and a consolidated cash-flow dashboard. The central challenge is coherence between sales, legal and finance.
| Module | Core tier | Full tier | 2026 order of magnitude |
|---|---|---|---|
| Program + unit management | Yes | Yes | 8,000 - 18,000 EUR |
| Sales tracking | Yes | Yes | 9,000 - 22,000 EUR |
| Payment calls / progress | Partial | Yes | 10,000 - 26,000 EUR |
| Cash-flow dashboard | No | Yes | 7,000 - 16,000 EUR |
| Buyer portal | No | Yes | 6,000 - 14,000 EUR |
| Delivery time | 4 - 6 months | 6 - 8 months | - |
The cost items to anticipate
The gap between 40,000 and 110,000 EUR comes mainly from payment calls (schedule rules based on construction progress), multi-program cash-flow consolidation, and integrations (accounting, e-signature, notaries).
| Item | Simple project | Full project | Comment |
|---|---|---|---|
| Design + UX | 5,000 EUR | 13,000 EUR | Sales + finance journeys |
| Core development | 20,000 EUR | 50,000 EUR | Programs, units, reservations |
| Payment calls | 8,000 EUR | 26,000 EUR | Most technical item |
| Cash flow + reporting | 5,000 EUR | 16,000 EUR | Multi-program steering |
| Integrations (accounting, e-signature) | 3,000 EUR | 12,000 EUR | Notaries, e-signature |
| Indicative total | 41,000 EUR | 117,000 EUR | Excluding maintenance |
Mini case study
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Sarah runs a development company in Amsterdam: 3 ongoing programs, 180 units total, average price 280,000 EUR. Today sales tracking and payment calls run across several Excel files, with an average 60 days between reservation and signature. With structured sales tracking and automated payment calls, she targets 45 days, i.e. 15 days saved per unit. Across 180 units, collecting earlier improves cash flow: accelerating the payment call tied to the reservation (5%, i.e. 14,000 EUR per unit) by 15 days across 180 units represents significant carrying-cost savings. On a 90,000 EUR investment, better cash-flow visibility and fewer schedule errors justify the tool from the first program.
FAQ
Can payment calls be automated? Yes, based on construction progress and the legal schedule. It is the most technical item (8,000 to 26,000 EUR) because rules vary by sale type (off-plan in particular).
Can we offer buyers a portal? Yes, to track progress, documents and payment calls. Budget 6,000 to 14,000 EUR depending on features.
Do we manage several programs in parallel? Yes, with cash-flow consolidation. The multi-program dashboard (7,000 to 16,000 EUR) is what provides global financial visibility.
How long to go live? Between 4 and 8 months. The program + sales core ships in 4-6 months; payment calls and consolidated cash flow extend it.
Can we integrate e-signature and accounting? Yes, via integrations. Plan 3,000 to 12,000 EUR depending on the tools (e-signature, accounting software, notary exchanges).
Let's scope your project. Tell us your number of programs, your payment-call rules and your target date: we will scope the perimeter and an indicative budget. 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.
