Off-Plan Buyer Portal: Construction Tracking Software Cost 2026

The verdict in three sentences

A custom off-plan (VEFA) buyer portal (35,000 to 80,000 EUR) transforms the client experience: the buyer tracks construction progress, their payment calls, their finish options and notary documents without calling support. The connector to the development CRM and document management (8,000 to 16,000 EUR) avoids double entry and guarantees up-to-date data. Target result: -45% inbound calls to customer service and buyer satisfaction finally measured.

CRM module or custom portal: the 2026 costing

Two paths open for the developer: activate a portal module in the development CRM, or build a custom portal connected to document management and the construction schedule. Custom wins when the buyer experience becomes a sales argument.

The CRM module is fast and economical but constrained by the vendor's ergonomics. The custom portal costs more but becomes a brand asset, customizable, differentiating the developer at the point of sale.

The building blocks of a strong buyer portal

An effective portal rests on four functions: visual construction tracking, a notified payment-call schedule, finish-option management and access to notary documents via document management. Here are 2026 custom ranges.

Automated payment-call notifications are the immediate-ROI line item: the buyer is warned, pays on time, and support no longer spends its days chasing by phone. This is the main source of the -45% calls.

Mini case study

Julien is program director at a developer in London, 4 developments in progress, 220 active buyers. His support team receives on average 6 calls/buyer over the development (progress, payment calls, documents), i.e. 1,320 calls handled at 12 minutes each: about 264 hours. By deploying a custom portal at 62,000 EUR (core + construction tracking + payment calls + finish options + document connector), 1,100 EUR/month maintenance, he cuts calls by 45%: 594 calls avoided, i.e. 119 hours/year freed, valued at 30 EUR/hour: 3,570 EUR/year. Beyond time, the portal improves buyer satisfaction and becomes a sales argument on future developments. Estimated payback: around 3 to 4 years with an owned brand asset.

FAQ

Isn't a CRM module enough to start?

Often yes for a first service level: basic tracking and documents. But as soon as you want visual construction tracking, finish options and a connected document system, custom (35,000 to 80,000 EUR) becomes essential.

How does the portal reduce support calls?

By giving the buyer autonomous access to progress, payment calls and documents, with automatic notifications. Concretely, they no longer need to call to know where their unit stands: -45% inbound calls.

Is the document-management connector mandatory?

Strongly recommended. Without it, notary and contractual documents are re-keyed or sent manually, creating errors and workload. The connector (8,000 to 16,000 EUR) syncs document management with the portal.

What is the timeline to deliver a buyer portal?

Expect 10 to 14 weeks for a core + construction tracking + payment calls + finish options + document connector scope. The core with authentication can ship in 4 weeks for a first version.

Can buyer satisfaction be measured through the portal?

Yes, by embedding surveys at each milestone (reservation, payment calls, delivery). This gives a satisfaction indicator tracked over time, useful as a sales argument on subsequent developments.

Let's scope your project. Tell us your number of developments, active buyers and current CRM/document system, and we'll frame CRM module vs custom portal with an indicative budget. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.