Interactive unit selector: show your inventory and organize the sale

An interactive unit selector puts your building on the buyer's phone: they tap a floor, see the floor plate with available, reserved and sold units, and walk through any apartment. For whoever's selling, it's a way to show inventory that's always up to date, keep the sale organized and steer each prospect to the unit that suits them best, including the ones that are worth more.

What is a floor and unit selector?

It's a page that opens from a link, with nothing to install, and it has three levels:

1. The building on its street. A photorealistic image of the finished building in its real surroundings. Every floor can be tapped.
2. The floor plate. When you pick a floor, its units appear, showing whether they face the street or the back, and their status: available, reserved or sold.
3. The unit. When you pick a unit, you see its details and a photorealistic walkthrough you move through by scrolling.

The Maconda XXIV demo works this way. It's an unofficial working demo based on a 12-story building in Quilmes, near Buenos Aires, marketed by Otamendi Propiedades. It runs on any phone.

Why show a building's inventory visually?

In a building with lots of units, the first question is almost never "what's the apartment like?" It's "what do you have left, and where?" With a spreadsheet or a PDF, answering that means the salesperson explains floor by floor, the buyer builds a mental map, and it all gets repeated with every inquiry.

The selector answers that question at a glance. The prospect sees which floors have openings, which units face the street, which ones sit higher up with a better view. They come into the conversation knowing what they want, which makes inquiries much more specific. See better-qualified inquiries.

How does it keep the sale organized?

A pre-sale with several salespeople, an outside brokerage and the developer all selling at once has a classic risk: two people offering the same unit, or someone showing an apartment that's already reserved. That creates friction with the buyer and erodes trust.

With the selector, everyone looks at the same thing:

• One source of truth. The availability the buyer sees is the same availability your sales team sees.
• Less back and forth. Your salesperson doesn't have to confirm by message whether a unit is still open. It's right there.
• One link for every channel. The same selector goes on your website, in your agent's WhatsApp, on listing sites and on the screen in your sales gallery.

For your sales team it's a working tool, not just marketing. See the walkthrough as a tool for your sales team.

How does it create urgency?

A price sheet doesn't convey movement. A building where you can see units marked as sold does.

When a prospect opens it and sees that on the floor they like, two of the four units are already sold, they understand without anyone saying it that supply is shrinking. That information is real, it's visible and it needs no pressure from the salesperson. The effect is strongest on the last units of each floor plan, or on the upper floors, which tend to go first.

It works the other way, too. At launch, a building where everything's available gives early buyers the feeling that they get first pick. Both help keep the decision from being put off. More in how to sell pre-construction faster.

How does it help sell higher-value units?

Not every unit in a building is worth the same. A high floor, a street-facing unit with a balcony, a corner unit or a bigger floor plan costs more, but on a floor plan the difference looks small: a few extra square feet, a different number.

The selector makes that difference visible:

• Height makes sense. The buyer sees where each floor sits in the building and what's around it.
• Front and back units can be compared. Placed on the floor plate, with their balcony and orientation.
• Floor plans can be walked through. The prospect steps into the one-bedroom and the two-bedroom and feels the difference.

When buyers understand why a unit is worth more, they're more likely to choose it or accept its price. Your salesperson stops justifying numbers and starts showing. See defending your price and raising the average sale.

Do you need a walkthrough for every unit?

No. One walkthrough per unit type covers every floor where that type repeats. A 40-unit building with 3 floor plans needs 3 walkthroughs, not 40. The selector sends each unit to the walkthrough for its type, so buyers always see the apartment they're looking at, without the cost growing with every floor.

Where do you use the selector?

• On the developer's or project's website, embedded, as the front door of the sale.
• By WhatsApp or text, as the answer to "what do you have available?"
• On listing sites and social media, as a link from the post.
• In the sales gallery, on a big screen or tablet, to explore the building with the buyer.
• With remote investors, who can pick a unit without traveling. See selling to remote buyers and investors.

What does the developer need to send?

The plans for the building and each floor plan, the finishes and the list of units with their status. Then you approve the material and, during the sale, let me know about availability changes so the selector stays current. More in what to send to get started and in 3D walkthroughs of apartments.

I work remotely from Buenos Aires (UTC−3), with deliveries by link and meetings by video call. If you have a building on the market or about to launch and want to see your inventory in a selector like this, message me on WhatsApp at +54 9 11 6193-3176 or email facundocampo100@gmail.com, in English or Spanish, and we'll look at it with your plans.

Frequently asked questions

How is unit availability updated?

The developer or the agency lets me know which units were reserved or sold, and the selector gets updated. That way, what the buyer sees always matches what your team can offer.

Can prices be hidden?

Yes. Each project decides what to show: availability only, availability with square footage, or prices too. Many developers prefer to show status and leave price for the conversation with the agent.

Does it work on a phone?

Yes. It opens in the browser on any phone, with nothing to install, and you can share it by WhatsApp or embed it on your own website.

Is it worth it for small buildings?

Yes. In a building with only a few units, the selector still keeps the sale organized and shows what's left, and since walkthroughs are done per floor plan, the cost stays contained.