Estate Agency Software: 2026 Development Cost Benchmark

The verdict in three sentences

For a 4-branch network in Marseille, a custom business tool covering transaction and rental management costs 40,000–70,000 € for a transaction MVP and 100,000–180,000 € for the full platform (mandates, matching, viewings, rent receipts, portals). Maintenance runs 12–16 %/year of the build. The main ROI comes from removed double entry: 10–20 h/week per branch, the equivalent of a half-time role per branch redeployed to selling.

Module pricing in 2026

A transaction MVP (mandates + matching + viewings + publishing) fits within 40,000–70,000 €, delivered in 16–20 weeks. The full platform with rental management, rent receipts and portals reaches 100,000–180,000 € over 20–24 weeks.

Assembling multiple SaaS vs a single platform

At 4 branches, a multi-SaaS stack often costs 24,000–42,000 €/year in subscriptions, before counting double entry. Over 5 years you exceed 150,000 € without ever owning the tool.

Mini case study

Nathalie runs a 4-branch network in Marseille, 18 staff. Each branch loses about 15 h/week to double entry between its transaction software, rental tool and the portals, i.e. 60 h/week network-wide. At a loaded cost of 28 €/h, that's ~87,000 €/year of unproductive time. She invests 150,000 € in a single platform + 22,000 €/year maintenance. By removing 80 % of that double entry she recovers ~70,000 €/year of sales capacity. The platform pays back in a little over two years, then delivers net gain every year while consolidating the network view.

FAQ

Should we start with transaction or rental management? Usually transaction (MVP 40,000–70,000 €), because that's where the revenue is. Rental management and rent receipts come in phase 2.

Are automated rent receipts legally reliable? Yes, if they respect lease mentions and index revision. Templates are configured with your property manager; receipts go out automatically each month.

Can we keep our current portals? Yes. Multi-portal publishing (SeLoger, Leboncoin, your site) is built in to remove re-keying. One entry feeds every channel.

How much is annual maintenance? Budget 12–16 % of the build per year, i.e. 18,000–29,000 € for a 150,000 € platform. It covers fixes, portal updates and small evolutions.

Is the owner portal worth it? Yes for a network: it cuts inbound calls, gives access to documents and receipts, and improves retention of management mandates. Budget 15,000–30,000 € depending on features.

Let's scope your project. Give us your number of branches, your volume of mandates and managed units, and the priority scope (transaction or rental) for a module-by-module estimate. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.