The verdict in three sentences
For a Miami developer selling pre-construction units to remote buyers, the website is no longer a brochure: it is a sales office open around the clock, showing unit availability, floor plans and taking deposits online. A realistic budget sits between 25,000 and 50,000 USD, of which 6,000 to 12,000 USD goes to the interactive unit grid alone, with launch in 3 to 4 months. On a 420-unit portfolio, a handful of extra sales pays back the investment.
Why remote buyers reshape the brief
Take a sales director running three towers in Brickell, Edgewater and North Miami Beach, 420 units in total. A large share of buyers live in New York, Toronto, Bogotá, São Paulo or Madrid. They cannot walk into the sales gallery on a Saturday. They want to see which 14th-floor unit is still open, compare two layouts, download the dimensioned plan and hold the unit before someone else does. Today this runs on WhatsApp, PDFs sent by hand and spreadsheets that three sales reps update separately. The outcome: double bookings, prospects waiting 48 hours for an answer, and lost trust from a buyer who is wiring tens of thousands of dollars remotely.
When 40% of reservations come from outside Florida, digital trust becomes a sales argument. The site must show construction progress (dated photos, milestones), the legal framework (Florida condo disclosures, escrow of deposits under state rules, the 15-day buyer rescission window) and a reservation path that ends with a deposit receipt and a video call with a rep.
What each building block costs in 2026
The figures below are 2026 orders of magnitude seen with US agencies and boutique studios working for South Florida developers.
| Feature | 2026 range (USD) | Notes |
|---|---|---|
| Design, project pages and content | 6,000 to 12,000 | 3 towers, layouts, neighborhood, financing |
| Live interactive unit grid | 6,000 to 12,000 | Clickable stacking plan, available, on hold, reserved, sold |
| 3D tours and downloadable plans | 3,000 to 8,000 | 360° tour embeds, PDF plan per unit |
| Card deposit payment | 2,500 to 5,000 | Payment gateway, automatic receipt, linked to the reservation |
| Sales CRM and lead routing | 4,000 to 8,000 | Pipeline per rep, follow-ups, email and WhatsApp history |
| Buyer portal (deposit schedule tracking) | 3,500 to 5,000 | Schedule, signed documents, construction photos |
| Indicative total | 25,000 to 50,000 | 3 to 4 months |
The unit grid is the most sensitive piece. It must be the single source of truth: when a rep places a hold in the CRM, the unit turns orange on the site within a minute. A hold expires automatically after 72 hours without a deposit, so units are not frozen for weeks by a silent prospect.
Delivery options compared
| Approach | Upfront cost (USD) | Timeline | Main limit |
|---|---|---|---|
| Simple marketing site + WhatsApp | 3,000 to 6,000 | 4 to 6 weeks | No live availability, double bookings |
| SaaS sales platform for developers | 300 to 900 per month | 1 to 2 months | Generic interface, limited control of the deposit flow |
| Custom site with grid and CRM | 25,000 to 50,000 | 3 to 4 months | Higher initial investment |
| Custom + full buyer portal | 40,000 to 50,000 | 4 months | Needs an internal routine for site updates |
| Maintenance and enhancements | 400 to 1,200 per month | Ongoing | Budget from day one |
For 420 units, SaaS looks cheaper at first, but often forces a second tool for deposits and remote buyer follow-up. Custom pays off when the developer plans further towers: the same platform hosts project four and five without starting over. On the technical side, this is a custom web application project; project pages can be supported by a dedicated SEO plan.
Legal and operational checkpoints
The online deposit must be framed as a reservation, backed by a reservation agreement signed electronically, with clear refund terms during the rescission period. Funds must land in an escrow account as Florida law requires for condo deposits, and every receipt must carry the unit number. Show prices in USD only, and keep pages light: many international visitors browse on mobile, so 3D tours load on demand rather than on page open.
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Mini case study
Daniel, sales director for a Miami developer, is marketing 420 units at an average price of 650,000 USD. He invests 42,000 USD in a site with a unit grid, card deposits and a CRM, plus 800 USD a month for maintenance, or 51,600 USD over the first year. Before the project, his team estimated it lost about one in ten remote unit requests to double bookings or slow replies. If the site closes just 2 additional sales in the year, extra revenue reaches 1,300,000 USD. At a 12% net margin, that is 156,000 USD, three times the first-year cost. Time matters too: the three reps no longer send 60 PDFs a week by hand, freeing about 10 hours weekly for video appointments.
FAQ
How much does a property developer website cost in Miami in 2026?
Budget 25,000 to 50,000 USD for a custom site with a unit grid, 3D tours, online deposits and a CRM. A basic marketing site without live availability costs 3,000 to 6,000 USD but cannot handle remote sales.
How long does it take to launch?
The usual timeline is 3 to 4 months, including 3 to 4 weeks of scoping and unit data migration. 3D tours and construction photos should be ready by month two so they do not delay launch.
Can buyers pay a deposit from abroad?
Yes, by card through a payment gateway, with an automatic receipt tied to the unit number. Reservation deposits commonly run 5% to 10% of the price, so 32,500 to 65,000 USD on a 650,000 USD unit, often split between card and wire.
How do we avoid double bookings?
The unit grid and the CRM share one database: a hold blocks the unit on the site in under a minute. Automatic expiry after 72 hours releases unconfirmed units.
What should we budget after launch?
Plan 400 to 1,200 USD a month for hosting, maintenance, security and small enhancements. Adding a new tower to the same platform usually costs far less than the initial build.
Let's scope your project. Tell us about your towers, unit count and sales calendar, and we will define the scope and the launch schedule. 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.
