The verdict in three sentences
A premium website for a property developer sits between 10,000 and 20,000 EUR ex. VAT in 2026, with a page per programme, a unit configurator and a connected CRM. The timeline is 8 to 12 weeks and the target conversion rate of a qualified contact form is 4 to 6%. With each captured lead worth several thousand euros in potential commission, the site pays for itself on a single sale.
The budget by functional block
A developer's site is not a passive brochure: it is a machine for capturing leads on high-value assets. Here is the 2026 breakdown.
| Functional block | 2026 range (EUR ex. VAT) | Role |
|---|---|---|
| Per-programme landing | 1,500 - 3,000 / programme | residence presentation, mood |
| Unit configurator | 2,500 - 5,000 | filter by size, floor, price |
| 3D tours / interactive plans | 1,500 - 4,000 | immersion, fewer wasted viewings |
| Qualified form + CRM | 1,500 - 3,500 | lead capture and scoring |
| Design & technical base | 3,000 - 5,000 | premium UI, mobile performance |
| Total | 10,000 - 20,000 | 2 to 3 programmes included |
The unit configurator is the item that turns a curious visitor into a qualified lead: it pre-selects the buyer before the first call.
Conversion levers
A developer's site is judged on its visitor-to-lead conversion rate. Here are the 2026 levers and their impact.
| Lever | Without | With | Effect on conversion |
|---|---|---|---|
| 3D tour per unit | 2.5% | 4.5% | +2 pts |
| Progressive form | 3% | 5% | +2 pts |
| Automatic CRM follow-up | 30% leads lost | 12% | -18 pts of loss |
| Mobile performance (LCP < 1.8 s) | 3% | 4.5% | +1.5 pts |
| Social proof (build progress) | 3.5% | 5% | +1.5 pts |
A 5% conversion rate instead of 3% nearly doubles the number of leads for the same acquisition budget: that is the real return of premium.
Mini case study
Julian, manager of a development company in Toronto, invests 16,000 EUR ex. VAT in a site (3 programmes, 10 weeks) with a configurator and CRM. His site received 1,200 visitors/month at a 3% conversion rate, i.e. 36 leads. After the redesign, the rate rises to 5%, i.e. 60 leads/month — +24 leads. With a 2% signing rate and an average commission of 9,000 EUR per unit sold, those 24 monthly leads generate on average 0.48 extra sales per month, i.e. ~52,000 EUR ex. VAT in annual commissions: the site pays for itself within the first quarter.
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FAQ
Why does a developer's site cost more than a standard brochure site?
Because the unit configurator, 3D tours and CRM connection are bespoke development. Those three items weigh 5,500 to 12,500 EUR.
Do I really need to connect a CRM?
Yes: without automatic follow-up, 30% of leads are lost. A connected CRM cuts that loss to 12% and mechanically increases sales.
Are 3D tours worth the cost?
At 1,500-4,000 EUR, they raise conversion by 2 points and reduce wasted physical viewings: the return is fast on high-value assets.
How long to deliver the site?
Eight to twelve weeks for 2 to 3 programmes, including 2 to 3 weeks of scoping and gathering plans and visuals for each residence.
What happens when a programme sells out?
The page is marked "sold out" or archived via the CMS; adding a new programme is then billed at 1,500 to 3,000 EUR depending on page richness.
Let's scope your project. Tell us how many programmes to publish and your CRM tool: we frame a premium website between 10,000 and 20,000 EUR ex. VAT with a configurator and lead tracking. 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.
